Backdoor.Win32.Fynloski_5351802a38

by malwarelabrobot on February 27th, 2015 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), BackdoorFynloski.YR, GenericDownloader.YR, GenericInjector.YR, TrojanDownloaderAndromeda.YR (Lavasoft MAS)
Behaviour: Trojan-Downloader, Trojan, Backdoor


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

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Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: 5351802a38f9895edd99389a07c42752
SHA1: e5546dc1e29e13b2649a1b5733401bea422ba267
SHA256: 46e5d6ea638eeb31b4a77ac934a46fae395ffebdcbde2f8734753047a4bc52e8
SSDeep: 24576:Ki34WSGj7JLj4lH0LTY2Zam38Ax9QbNcuzRuYOibs2xO2GtS:KiGGjNj4lULTY2pFCyvY9S2G4
Size: 1376648 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: VBS Install Library
Created at: 2014-12-15 01:34:41
Analyzed on: WindowsXP SP3 32-bit


Summary:

Backdoor. Malware that enables a remote control of victim's machine.

Payload

No specific payload has been found.

Process activity

The Backdoor creates the following process(es):

taskkill.exe:396
csc.exe:252
%original file name%.exe:1392
ping.exe:500
cvtres.exe:708
vbc.exe:1916

The Backdoor injects its code into the following process(es):

vbc.exe:904

Mutexes

The following mutexes were created/opened:
No objects were found.

File activity

The process csc.exe:252 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\CSC8.tmp (652 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.dll (24254 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.out (396 bytes)

The Backdoor deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\CSC8.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\RES9.tmp (0 bytes)

The process %original file name%.exe:1392 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\Tar2.tmp (2712 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab5.tmp (57 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\2BF68F4714092295550497DD56F57004 (408 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015 (57 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015 (408 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab1.tmp (54 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar6.tmp (2784 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar4.tmp (2712 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\2BF68F4714092295550497DD56F57004 (18 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.cmdline (225 bytes)
%Documents and Settings%\%current user%\Application Data\YNfJmzqX.exe (8657 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab3.tmp (54 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp7.tmp.txt (146216 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.out (292 bytes)

The Backdoor deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar2.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab5.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab1.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.err (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar6.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar4.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.dll (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.cmdline (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab3.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.out (0 bytes)

The process cvtres.exe:708 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\RES9.tmp (2912 bytes)

Registry activity

The process taskkill.exe:396 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "30 9F D5 58 17 2E 8E 48 A5 D6 1F 0A 3D C2 90 45"

The process csc.exe:252 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CB DF A3 05 E5 68 ED 88 90 07 9E 1F 1B B2 A3 D8"

The process %original file name%.exe:1392 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "1A D6 F0 36 B6 37 4D 6B 33 72 21 FA 30 B9 61 21"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\c:\%original file name%.exe,"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

The Backdoor modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"

The Backdoor modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

The Backdoor modifies IE settings for security zones to map all urls to the Intranet Zone:

"IntranetName" = "1"

To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Chrome.exe" = "%Documents and Settings%\%current user%\Application Data\YNfJmzqX.exe"

The process ping.exe:500 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9C 82 19 2A 23 00 F9 62 71 E6 EE C2 2B 7E 22 32"

The process cvtres.exe:708 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4A 9A D1 6E CE 87 7C F8 44 C3 7C 55 D2 56 C8 AB"

The process vbc.exe:904 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DD C4 77 21 40 A6 4A 0C 15 E7 BA 64 9B CF 8B D9"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

Dropped PE files

There are no dropped PE files.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

VersionInfo

Company Name: Google Inc.
Product Name: Google Chrome
Product Version: 39.0.0
Legal Copyright: Copyright 2012 Google Inc. All rights reserved.
Legal Trademarks:
Original Filename: Garrys mod Pony.exe
Internal Name: Garrys mod Pony.exe
File Version: 39.0.0
File Description: Google Chrome
Comments: Google Chrome
Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 8192 1370260 1370624 5.50527 047f61fe4571acb28b13bd05a073718c
.rsrc 1384448 4096 4096 1.38322 0e5e1ef517ae0ea8a02412789f80ac3a
.reloc 1392640 12 512 0.056519 07f41dd93b3116a52d5543b9b130a75f

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL IP
hxxp://a767.g.akamai.net/msdownload/update/v3/static/trustedr/en/authrootseq.txt
hxxp://a767.g.akamai.net/msdownload/update/v3/static/trustedr/en/authrootstl.cab
hxxp://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab 212.30.134.145
hxxp://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt 212.30.134.145
m56.no-ip.biz 24.96.222.169


IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /msdownload/update/v3/static/trustedr/en/authrootseq.txt HTTP/1.1
Accept: */*
User-Agent: Microsoft-CryptoAPI/5.131.2600.5512
Host: VVV.download.windowsupdate.com
Connection: Keep-Alive
Cache-Control: no-cache
Pragma: no-cache


HTTP/1.1 200 OK
Content-Type: text/plain
Last-Modified: Thu, 22 Jan 2015 02:19:40 GMT
Accept-Ranges: bytes
ETag: "0c644e0e935d01:0"
Server: Microsoft-IIS/7.5
X-Powered-By: ASP.NET
Content-Length: 18
Cache-Control: max-age=6449
Date: Thu, 26 Feb 2015 14:52:49 GMT
Connection: keep-alive
X-CCC: FR
X-CID: 2
1401D035E9E03F64E5....


GET /msdownload/update/v3/static/trustedr/en/authrootstl.cab HTTP/1.1


Accept: */*
User-Agent: Microsoft-CryptoAPI/5.131.2600.5512
Host: VVV.download.windowsupdate.com
Connection: Keep-Alive
Cache-Control: no-cache
Pragma: no-cache


HTTP/1.1 200 OK
Content-Type: application/octet-stream
Last-Modified: Fri, 23 Jan 2015 02:29:11 GMT
Accept-Ranges: bytes
ETag: "803565fb436d01:0"
Server: Microsoft-IIS/7.5
X-Powered-By: ASP.NET
Content-Length: 57591
Cache-Control: max-age=4210
Date: Thu, 26 Feb 2015 14:52:49 GMT
Connection: keep-alive
X-CCC: FR
X-CID: 2
MSCF............,...................I.................6Fm. .authroot.s
tl......8..CK...<T...g.v!M.d..f.%d..}K..5......dM*K..J.,%K"...!..=.
k..........{=/....{g.~...............'....6..N....w......(.$.>.7...
........'.....`.bx....^..$.'.^.K.C......<[email protected]
.....usXq.d.i.jF$.4.........KI.Q........A2m:..E.P|...(.^p..=G|.....m..
....  .6...H.e.....X'...%$r.Y.(..)........|...;...V^r.VM.._*X.I. ..4..
...*.....Y..`.0w.u...c.i.[..-...x..<.8.<.p..,..y.[v.Yn`......!.s
...4e......B...$.,..........w.Pd.)....,..#.%..h...8...`.A...8.i(.!.$/.
=.....i.\X.H......"...a...k...y6....F.._?\*.&..3.AJo.!..`....9....=.p.
u..u....f.f....w...?..S..I.;.....5._...F.f..G?$......."..kq.y'.6tJ.e%.
.G.n.....z<.pX"....1..g."........V:.H.-...!}LM..t..-.y.j&...n{..-.]
H. .....A.O.Xg..B...#[email protected]..*.....T...}o._./S..h@$
[email protected]..#.:?."....1..v.....&G...?O1x6"5.@..$.U...n.J...w
.Y.{..........E.N.&...&.rC..W.....M.........,.e.....&eI(/eSO.B..K...R.
 [email protected].....(..Y./;-..M5.0.H2.y....:...........a.U....%.S.).^.
...1.B..a..=...q...X .B....F.../..../.Z...'..t....C....,.^...N=..t%N|I
C.#.)6...q.E.J.i.E.>....".L........>...Vy.7.jxx......G........._
q.1^..H&.4Z......^.E.K 9.Xg...qO.6%>..T....;n..s.'u.-...=.........p
..p.Rn.........=.......F........d. d.AR.0U..........9b...=N..#....c.Ic
z......u.0............Y.q..b.wYE.......R...s..W....r].....hT....k.g..[
...s.....X..`=zb.>..../..=........J.N.h...(}.5.7. .;..=F..F...'.?..
2...3...=...B..`....{...f.`Kb..@..`Z.0!^8.t..<l.j..lI.P.q.>k
<<< skipped >>>

The Backdoor connects to the servers at the folowing location(s):

vbc.exe_904:

.text
`.itext
`.data
.idata
.rdata
@.reloc
B.rsrc
kernel32.dll
Windows
MSWHEEL_ROLLMSG
MSH_WHEELSUPPORT_MSG
MSH_SCROLL_LINES_MSG
$*@@@*$@@@$ *@@* $@@($*)@-$*@@$-*@@$*-@@(*$)@-*$@@*-$@@*$-@@-* $@-$ *@* $-@$ *-@$ -*@*- $@($ *)(* $)
oleaut32.dll
EVariantBadIndexError
ssShift
htKeyword
EInvalidOperation
%s_%d
EInvalidGraphicOperation
SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes
%s, ClassID: %s
%s, ProgID: "%s"
ole32.dll
USER32.DLL
uxtheme.dll
DWMAPI.DLL
clWebSnow
clWebFloralWhite
clWebLavenderBlush
clWebOldLace
clWebIvory
clWebCornSilk
clWebBeige
clWebAntiqueWhite
clWebWheat
clWebAliceBlue
clWebGhostWhite
clWebLavender
clWebSeashell
clWebLightYellow
clWebPapayaWhip
clWebNavajoWhite
clWebMoccasin
clWebBurlywood
clWebAzure
clWebMintcream
clWebHoneydew
clWebLinen
clWebLemonChiffon
clWebBlanchedAlmond
clWebBisque
clWebPeachPuff
clWebTan
clWebYellow
clWebDarkOrange
clWebRed
clWebDarkRed
clWebMaroon
clWebIndianRed
clWebSalmon
clWebCoral
clWebGold
clWebTomato
clWebCrimson
clWebBrown
clWebChocolate
clWebSandyBrown
clWebLightSalmon
clWebLightCoral
clWebOrange
clWebOrangeRed
clWebFirebrick
clWebSaddleBrown
clWebSienna
clWebPeru
clWebDarkSalmon
clWebRosyBrown
clWebPaleGoldenrod
clWebLightGoldenrodYellow
clWebOlive
clWebForestGreen
clWebGreenYellow
clWebChartreuse
clWebLightGreen
clWebAquamarine
clWebSeaGreen
clWebGoldenRod
clWebKhaki
clWebOliveDrab
clWebGreen
clWebYellowGreen
clWebLawnGreen
clWebPaleGreen
clWebMediumAquamarine
clWebMediumSeaGreen
clWebDarkGoldenRod
clWebDarkKhaki
clWebDarkOliveGreen
clWebDarkgreen
clWebLimeGreen
clWebLime
clWebSpringGreen
clWebMediumSpringGreen
clWebDarkSeaGreen
clWebLightSeaGreen
clWebPaleTurquoise
clWebLightCyan
clWebLightBlue
clWebLightSkyBlue
clWebCornFlowerBlue
clWebDarkBlue
clWebIndigo
clWebMediumTurquoise
clWebTurquoise
clWebCyan
clWebPowderBlue
clWebSkyBlue
clWebRoyalBlue
clWebMediumBlue
clWebMidnightBlue
clWebDarkTurquoise
clWebCadetBlue
clWebDarkCyan
clWebTeal
clWebDeepskyBlue
clWebDodgerBlue
clWebBlue
clWebNavy
clWebDarkViolet
clWebDarkOrchid
clWebMagenta
clWebDarkMagenta
clWebMediumVioletRed
clWebPaleVioletRed
clWebBlueViolet
clWebMediumOrchid
clWebMediumPurple
clWebPurple
clWebDeepPink
clWebLightPink
clWebViolet
clWebOrchid
clWebPlum
clWebThistle
clWebHotPink
clWebPink
clWebLightSteelBlue
clWebMediumSlateBlue
clWebLightSlateGray
clWebWhite
clWebLightgrey
clWebGray
clWebSteelBlue
clWebSlateBlue
clWebSlateGray
clWebWhiteSmoke
clWebSilver
clWebDimGray
clWebMistyRose
clWebDarkSlateBlue
clWebDarkSlategray
clWebGainsboro
clWebDarkGray
clWebBlack
comctl32.dll
AutoHotkeysd-C
AutoHotkeys
\SYSTEM\CurrentControlSet\Control\Keyboard Layouts\
ssHotTrack
TWindowState
poProportional
TWMKey
KeyPreview
WindowState
OnKeyDownL
OnKeyPress
OnKeyUpH
GlassFrame.Bottom
GlassFrame.Enabled
GlassFrame.Left
GlassFrame.Right
GlassFrame.SheetOfGlass
GlassFrame.Top
System\CurrentControlSet\Control\Keyboard Layouts\%.8x
Uh.ID
User32.dll
TKeyEvent
TKeyPressEvent
HelpKeyword nA
crSQLWait
%s (%s)
imm32.dll
TSocketPort
%d.%d.%d.%d
0.0.0.0
PSAPI.dll
TDCWebCam
127.0.0.1
BuildImportTable: can't load library:
BuildImportTable: ReallocMemory failed
BuildImportTable: GetProcAddress failed
BTMemoryLoadLibary: BuildImportTable failed
BTMemoryGetProcAddress: no export table found
BTMemoryGetProcAddress: DLL doesn't export anything
BTMemoryGetProcAddress: exported symbol not found
1.2.3
127.0.0.1:1604
#KCMDDC51#-
5.3.0
cmd.exe
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
hkey
\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
*.torrent
\Internet Explorer\iexplore.exe
explorer.exe
wlanapi.dll
80211_SHARED_KEY
user32.dll
TUploadFTP
notepad.exe
KEYNAME
%ShortCut#
RELATEDCMD
ping 127.0.0.1 -n 4 > NUL && "
DRKey
CRKey
DelMSKey
InstallHKEY
ActiveOnlineKeylogger
UnActiveOnlineKeylogger
KeylogOn
ActiveOfflineKeylogger
UnActiveOfflineKeylogger
ActiveOnlineKeyStrokes
UnActiveOnlineKeyStrokes
OpenWebPage
tmpprint.txt
URLUpdate
MSGBOX
#BOT#VisitUrl
#BOT#OpenUrl
HTTP://
hXXp://
BTRESULTOpen URL|
Command successfully executed!|
#BOT#URLUpdate
BTERRORUpdate from URL| Error on downloading file check if you type the correct url...|
BTRESULTUpdate from URL|Update : File Downloaded , Executing new one in temp dir...|
#BOT#URLDownload
GetActivePorts
out.txt
tmp.txt
DDOSHTTPFLOOD
DDOSUDPFLOOD
%IPPORTSCAN
SAPI.SpVoice
WEBCAMLIVE
WEBCAMSTOP
PASSWORD
FTPFILEUPLOAD
URLDOWNLOADTOFILE
UPLOADEXEC
UPANDEXEC
FTPPORT
FTPPASS
FTPUSER
FTPHOST
FTPROOT
FTPUPLOADK
FTPSIZE
BTRESULTUDP Flood|UDP Flood task finished!|
PortScanAdd
BTRESULTVisit URL|finished to visit
BTERRORVisit URL|An exception occured in the thread|
POST /index.php/1.0
BTRESULTHTTP Flood|Http Flood task finished!|
Mozilla
BTRESULTDownload File|Mass Download : File Downloaded , Executing new one in temp dir...|
BTERRORDownload File| Error on downloading file check if you type the correct url...|
Software\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows NT\CurrentVersion\Winlogon
ERR|Cannot listen to port, try another one..|
TCaptureWebcam
taskmgr.exe
\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\
DC3_FEXEC
Windows NT 4.0
Windows 2000
Windows XP
Windows Server 2003
Windows Vista
Windows 7
Windows 95
Windows 98
Windows Me
S-%u-
FAKEMSG
MSGICON
MSGTITLE
MSGCORE
deflate 1.2.3 Copyright 1995-2005 Jean-loup Gailly
inflate 1.2.3 Copyright 1995-2005 Mark Adler
%Documents and Settings%\%current user%\Application Data\dclogs\2015-02-26-5.dc
advapi32.dll
RegOpenKeyExA
RegCloseKey
GetKeyboardType
keybd_event
VkKeyScanA
UnhookWindowsHookEx
SetWindowsHookExA
MsgWaitForMultipleObjectsEx
MsgWaitForMultipleObjects
MapVirtualKeyA
LoadKeyboardLayoutA
GetKeyboardState
GetKeyboardLayoutNameA
GetKeyboardLayoutList
GetKeyboardLayout
GetKeyState
GetKeyNameTextA
ExitWindowsEx
EnumWindows
EnumThreadWindows
EnumChildWindows
ActivateKeyboardLayout
gdi32.dll
SetViewportOrgEx
version.dll
WinExec
PeekNamedPipe
GetWindowsDirectoryA
GetProcessHeap
GetCPInfo
CreatePipe
RegQueryInfoKeyA
RegOpenKeyA
RegFlushKey
RegEnumKeyExA
RegDeleteKeyA
RegCreateKeyExA
RegCreateKeyA
wsock32.dll
shell32.dll
ShellExecuteExA
ShellExecuteA
SHFileOperationA
URLMON.DLL
URLDownloadToFileA
wininet.dll
InternetOpenUrlA
HttpQueryInfoA
FtpPutFileA
winmm.dll
netapi32.dll
gdiplus.dll
GdiplusShutdown
msacm32.dll
ntdll.dll
WS2_32.DLL
SHFolder.dll
SHELL32.DLL
AVICAP32.DLL
1!1,1=1|1
6 6$6(6,606
=!=$=)=-=1=
01m1
0 0$0(0,0004080<0@0
<!=$=)=-=4=
;"<?<_<|<
; ;$;(;,;0;4;8;<;@;
7 8$888<8
= =$=(=,=0=4=8=
UntKeylogger
KWindows
UntActivePorts
UntControlKey
UntCaptureWebcam
UntWebCam
UrlMon
(UntUploadFTPThread
UntFTP
_UntUDPFlood
YUntScanPorts
0UntPasswordAndData
XUntHTTPFlood
UntCPU
66006666
No help found for %s#No context-sensitive help installed
No help found for context$No topic-based help system installedNUnable to retrieve a pointer to a running object registered with OLE for %s/%s
Invalid clipboard format Clipboard does not support Icons
Cannot open clipboard/Menu '%s' is already being used by another form
- Dock zone has no controlLError loading dock zone from the stream. Expecting version %d, but found %d.
OLE error %.8x.Method '%s' not supported by automation object/Variant does not reference an automation object7Dispatch methods do not support more than 64 parameters
Error creating window class Cannot focus a disabled or invisible window!Control '%s' has no parent window
Not enough timers available@GroupIndex cannot be less than a previous menu item's GroupIndex5Cannot create form. No MDI forms are currently active$%s not in a class registration group
Property %s does not exist
Thread creation error: %s
Thread Error: %s (%d)
Unsupported clipboard format
Invalid data type for '%s' List capacity out of bounds (%d)
List count out of bounds (%d)
List index out of bounds (%d) Out of memory while expanding memory stream
Error reading %s%s%s: %s
Failed to create key %s
Failed to get data for '%s'
Failed to set data for '%s'
Resource %s not found
%s.Seek not implemented$Operation not allowed on sorted list
Ancestor for '%s' not found
Cannot assign a %s to a %s
Bits index out of range*Can't write to a read-only resource streamECheckSynchronize called from thread $%x, which is NOT the main thread
Class %s not found
A class named %s already exists%List does not allow duplicates ($0%x)#A component named %s already exists%String list does not allow duplicates
Cannot create file "%s". %s
Cannot open file "%s". %s
Invalid stream format$''%s'' is not a valid component name
External exception %x
Interface not supported
%s (%s, line %d)
Abstract Error?Access violation at address %p in module '%s'. %s of address %p
System Error. Code: %d.
No argument for format '%s'"Variant method calls not supported
Invalid variant operation%Invalid variant operation (%s%.8x)
%s5Could not convert variant of type (%s) into type (%s)=Overflow while converting variant of type (%s) into type (%s)
Operation not supported
Integer overflow Invalid floating point operation
Invalid pointer operation
Invalid class typecast0Access violation at address %p. %s of address %p
Privileged instruction(Exception %s in module %s at %p.
Application Error1Format '%s' invalid or incompatible with argument
!'%s' is not a valid integer value('%s' is not a valid floating point value!'%s' is not a valid date and time
'%s' is not a valid GUID value
I/O error %d
1, 0, 0, 1
MSRSAAP.EXE
4, 0, 0, 0

vbc.exe_904_rwx_00400000_000B2000:

.text
`.itext
`.data
.idata
.rdata
@.reloc
B.rsrc
kernel32.dll
Windows
MSWHEEL_ROLLMSG
MSH_WHEELSUPPORT_MSG
MSH_SCROLL_LINES_MSG
$*@@@*$@@@$ *@@* $@@($*)@-$*@@$-*@@$*-@@(*$)@-*$@@*-$@@*$-@@-* $@-$ *@* $-@$ *-@$ -*@*- $@($ *)(* $)
oleaut32.dll
EVariantBadIndexError
ssShift
htKeyword
EInvalidOperation
%s_%d
EInvalidGraphicOperation
SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes
%s, ClassID: %s
%s, ProgID: "%s"
ole32.dll
USER32.DLL
uxtheme.dll
DWMAPI.DLL
clWebSnow
clWebFloralWhite
clWebLavenderBlush
clWebOldLace
clWebIvory
clWebCornSilk
clWebBeige
clWebAntiqueWhite
clWebWheat
clWebAliceBlue
clWebGhostWhite
clWebLavender
clWebSeashell
clWebLightYellow
clWebPapayaWhip
clWebNavajoWhite
clWebMoccasin
clWebBurlywood
clWebAzure
clWebMintcream
clWebHoneydew
clWebLinen
clWebLemonChiffon
clWebBlanchedAlmond
clWebBisque
clWebPeachPuff
clWebTan
clWebYellow
clWebDarkOrange
clWebRed
clWebDarkRed
clWebMaroon
clWebIndianRed
clWebSalmon
clWebCoral
clWebGold
clWebTomato
clWebCrimson
clWebBrown
clWebChocolate
clWebSandyBrown
clWebLightSalmon
clWebLightCoral
clWebOrange
clWebOrangeRed
clWebFirebrick
clWebSaddleBrown
clWebSienna
clWebPeru
clWebDarkSalmon
clWebRosyBrown
clWebPaleGoldenrod
clWebLightGoldenrodYellow
clWebOlive
clWebForestGreen
clWebGreenYellow
clWebChartreuse
clWebLightGreen
clWebAquamarine
clWebSeaGreen
clWebGoldenRod
clWebKhaki
clWebOliveDrab
clWebGreen
clWebYellowGreen
clWebLawnGreen
clWebPaleGreen
clWebMediumAquamarine
clWebMediumSeaGreen
clWebDarkGoldenRod
clWebDarkKhaki
clWebDarkOliveGreen
clWebDarkgreen
clWebLimeGreen
clWebLime
clWebSpringGreen
clWebMediumSpringGreen
clWebDarkSeaGreen
clWebLightSeaGreen
clWebPaleTurquoise
clWebLightCyan
clWebLightBlue
clWebLightSkyBlue
clWebCornFlowerBlue
clWebDarkBlue
clWebIndigo
clWebMediumTurquoise
clWebTurquoise
clWebCyan
clWebPowderBlue
clWebSkyBlue
clWebRoyalBlue
clWebMediumBlue
clWebMidnightBlue
clWebDarkTurquoise
clWebCadetBlue
clWebDarkCyan
clWebTeal
clWebDeepskyBlue
clWebDodgerBlue
clWebBlue
clWebNavy
clWebDarkViolet
clWebDarkOrchid
clWebMagenta
clWebDarkMagenta
clWebMediumVioletRed
clWebPaleVioletRed
clWebBlueViolet
clWebMediumOrchid
clWebMediumPurple
clWebPurple
clWebDeepPink
clWebLightPink
clWebViolet
clWebOrchid
clWebPlum
clWebThistle
clWebHotPink
clWebPink
clWebLightSteelBlue
clWebMediumSlateBlue
clWebLightSlateGray
clWebWhite
clWebLightgrey
clWebGray
clWebSteelBlue
clWebSlateBlue
clWebSlateGray
clWebWhiteSmoke
clWebSilver
clWebDimGray
clWebMistyRose
clWebDarkSlateBlue
clWebDarkSlategray
clWebGainsboro
clWebDarkGray
clWebBlack
comctl32.dll
AutoHotkeysd-C
AutoHotkeys
\SYSTEM\CurrentControlSet\Control\Keyboard Layouts\
ssHotTrack
TWindowState
poProportional
TWMKey
KeyPreview
WindowState
OnKeyDownL
OnKeyPress
OnKeyUpH
GlassFrame.Bottom
GlassFrame.Enabled
GlassFrame.Left
GlassFrame.Right
GlassFrame.SheetOfGlass
GlassFrame.Top
System\CurrentControlSet\Control\Keyboard Layouts\%.8x
Uh.ID
User32.dll
TKeyEvent
TKeyPressEvent
HelpKeyword nA
crSQLWait
%s (%s)
imm32.dll
TSocketPort
%d.%d.%d.%d
0.0.0.0
PSAPI.dll
TDCWebCam
127.0.0.1
BuildImportTable: can't load library:
BuildImportTable: ReallocMemory failed
BuildImportTable: GetProcAddress failed
BTMemoryLoadLibary: BuildImportTable failed
BTMemoryGetProcAddress: no export table found
BTMemoryGetProcAddress: DLL doesn't export anything
BTMemoryGetProcAddress: exported symbol not found
1.2.3
127.0.0.1:1604
#KCMDDC51#-
5.3.0
cmd.exe
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
hkey
\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
*.torrent
\Internet Explorer\iexplore.exe
explorer.exe
wlanapi.dll
80211_SHARED_KEY
user32.dll
TUploadFTP
notepad.exe
KEYNAME
%ShortCut#
RELATEDCMD
ping 127.0.0.1 -n 4 > NUL && "
DRKey
CRKey
DelMSKey
InstallHKEY
ActiveOnlineKeylogger
UnActiveOnlineKeylogger
KeylogOn
ActiveOfflineKeylogger
UnActiveOfflineKeylogger
ActiveOnlineKeyStrokes
UnActiveOnlineKeyStrokes
OpenWebPage
tmpprint.txt
URLUpdate
MSGBOX
#BOT#VisitUrl
#BOT#OpenUrl
HTTP://
hXXp://
BTRESULTOpen URL|
Command successfully executed!|
#BOT#URLUpdate
BTERRORUpdate from URL| Error on downloading file check if you type the correct url...|
BTRESULTUpdate from URL|Update : File Downloaded , Executing new one in temp dir...|
#BOT#URLDownload
GetActivePorts
out.txt
tmp.txt
DDOSHTTPFLOOD
DDOSUDPFLOOD
%IPPORTSCAN
SAPI.SpVoice
WEBCAMLIVE
WEBCAMSTOP
PASSWORD
FTPFILEUPLOAD
URLDOWNLOADTOFILE
UPLOADEXEC
UPANDEXEC
FTPPORT
FTPPASS
FTPUSER
FTPHOST
FTPROOT
FTPUPLOADK
FTPSIZE
BTRESULTUDP Flood|UDP Flood task finished!|
PortScanAdd
BTRESULTVisit URL|finished to visit
BTERRORVisit URL|An exception occured in the thread|
POST /index.php/1.0
BTRESULTHTTP Flood|Http Flood task finished!|
Mozilla
BTRESULTDownload File|Mass Download : File Downloaded , Executing new one in temp dir...|
BTERRORDownload File| Error on downloading file check if you type the correct url...|
Software\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows NT\CurrentVersion\Winlogon
ERR|Cannot listen to port, try another one..|
TCaptureWebcam
taskmgr.exe
\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall
\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\
DC3_FEXEC
Windows NT 4.0
Windows 2000
Windows XP
Windows Server 2003
Windows Vista
Windows 7
Windows 95
Windows 98
Windows Me
S-%u-
FAKEMSG
MSGICON
MSGTITLE
MSGCORE
deflate 1.2.3 Copyright 1995-2005 Jean-loup Gailly
inflate 1.2.3 Copyright 1995-2005 Mark Adler
%Documents and Settings%\%current user%\Application Data\dclogs\2015-02-26-5.dc
advapi32.dll
RegOpenKeyExA
RegCloseKey
GetKeyboardType
keybd_event
VkKeyScanA
UnhookWindowsHookEx
SetWindowsHookExA
MsgWaitForMultipleObjectsEx
MsgWaitForMultipleObjects
MapVirtualKeyA
LoadKeyboardLayoutA
GetKeyboardState
GetKeyboardLayoutNameA
GetKeyboardLayoutList
GetKeyboardLayout
GetKeyState
GetKeyNameTextA
ExitWindowsEx
EnumWindows
EnumThreadWindows
EnumChildWindows
ActivateKeyboardLayout
gdi32.dll
SetViewportOrgEx
version.dll
WinExec
PeekNamedPipe
GetWindowsDirectoryA
GetProcessHeap
GetCPInfo
CreatePipe
RegQueryInfoKeyA
RegOpenKeyA
RegFlushKey
RegEnumKeyExA
RegDeleteKeyA
RegCreateKeyExA
RegCreateKeyA
wsock32.dll
shell32.dll
ShellExecuteExA
ShellExecuteA
SHFileOperationA
URLMON.DLL
URLDownloadToFileA
wininet.dll
InternetOpenUrlA
HttpQueryInfoA
FtpPutFileA
winmm.dll
netapi32.dll
gdiplus.dll
GdiplusShutdown
msacm32.dll
ntdll.dll
WS2_32.DLL
SHFolder.dll
SHELL32.DLL
AVICAP32.DLL
1!1,1=1|1
6 6$6(6,606
=!=$=)=-=1=
01m1
0 0$0(0,0004080<0@0
<!=$=)=-=4=
;"<?<_<|<
; ;$;(;,;0;4;8;<;@;
7 8$888<8
= =$=(=,=0=4=8=
UntKeylogger
KWindows
UntActivePorts
UntControlKey
UntCaptureWebcam
UntWebCam
UrlMon
(UntUploadFTPThread
UntFTP
_UntUDPFlood
YUntScanPorts
0UntPasswordAndData
XUntHTTPFlood
UntCPU
66006666
No help found for %s#No context-sensitive help installed
No help found for context$No topic-based help system installedNUnable to retrieve a pointer to a running object registered with OLE for %s/%s
Invalid clipboard format Clipboard does not support Icons
Cannot open clipboard/Menu '%s' is already being used by another form
- Dock zone has no controlLError loading dock zone from the stream. Expecting version %d, but found %d.
OLE error %.8x.Method '%s' not supported by automation object/Variant does not reference an automation object7Dispatch methods do not support more than 64 parameters
Error creating window class Cannot focus a disabled or invisible window!Control '%s' has no parent window
Not enough timers available@GroupIndex cannot be less than a previous menu item's GroupIndex5Cannot create form. No MDI forms are currently active$%s not in a class registration group
Property %s does not exist
Thread creation error: %s
Thread Error: %s (%d)
Unsupported clipboard format
Invalid data type for '%s' List capacity out of bounds (%d)
List count out of bounds (%d)
List index out of bounds (%d) Out of memory while expanding memory stream
Error reading %s%s%s: %s
Failed to create key %s
Failed to get data for '%s'
Failed to set data for '%s'
Resource %s not found
%s.Seek not implemented$Operation not allowed on sorted list
Ancestor for '%s' not found
Cannot assign a %s to a %s
Bits index out of range*Can't write to a read-only resource streamECheckSynchronize called from thread $%x, which is NOT the main thread
Class %s not found
A class named %s already exists%List does not allow duplicates ($0%x)#A component named %s already exists%String list does not allow duplicates
Cannot create file "%s". %s
Cannot open file "%s". %s
Invalid stream format$''%s'' is not a valid component name
External exception %x
Interface not supported
%s (%s, line %d)
Abstract Error?Access violation at address %p in module '%s'. %s of address %p
System Error. Code: %d.
No argument for format '%s'"Variant method calls not supported
Invalid variant operation%Invalid variant operation (%s%.8x)
%s5Could not convert variant of type (%s) into type (%s)=Overflow while converting variant of type (%s) into type (%s)
Operation not supported
Integer overflow Invalid floating point operation
Invalid pointer operation
Invalid class typecast0Access violation at address %p. %s of address %p
Privileged instruction(Exception %s in module %s at %p.
Application Error1Format '%s' invalid or incompatible with argument
!'%s' is not a valid integer value('%s' is not a valid floating point value!'%s' is not a valid date and time
'%s' is not a valid GUID value
I/O error %d
1, 0, 0, 1
MSRSAAP.EXE
4, 0, 0, 0


Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.


Manual removal*

  1. Terminate malicious process(es) (How to End a Process With the Task Manager):

    taskkill.exe:396
    csc.exe:252
    %original file name%.exe:1392
    ping.exe:500
    cvtres.exe:708
    vbc.exe:1916

  2. Delete the original Backdoor file.
  3. Delete or disinfect the following files created/modified by the Backdoor:

    %Documents and Settings%\%current user%\Local Settings\Temp\CSC8.tmp (652 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.dll (24254 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.out (396 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Tar2.tmp (2712 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Cab5.tmp (57 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\2BF68F4714092295550497DD56F57004 (408 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015 (57 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015 (408 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Cab1.tmp (54 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Tar6.tmp (2784 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Tar4.tmp (2712 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\2BF68F4714092295550497DD56F57004 (18 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\wcvhgg00.cmdline (225 bytes)
    %Documents and Settings%\%current user%\Application Data\YNfJmzqX.exe (8657 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Cab3.tmp (54 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmp7.tmp.txt (146216 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\RES9.tmp (2912 bytes)

  4. Delete the following value(s) in the autorun key (How to Work with System Registry):

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "Chrome.exe" = "%Documents and Settings%\%current user%\Application Data\YNfJmzqX.exe"

  5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  6. Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

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