Gen.Variant.Buzy.3649_00d3a6e9b6

by malwarelabrobot on April 23rd, 2015 in Malware Descriptions.

Trojan.Win32.VBKrypt.eoec (Kaspersky), Gen:Variant.Buzy.3649 (B) (Emsisoft), Gen:Variant.Buzy.3649 (AdAware), Worm.Win32.Vobfus.11.FD, Tdl4.YR (Lavasoft MAS)
Behaviour: Trojan, Worm


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

Requires JavaScript enabled!

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

MD5: 00d3a6e9b6575e8b8004d7e6fbddff70
SHA1: 058d111df8c0de8f32f9c466ef17362435ed9d52
SHA256: b037d83231fd5652353d81fb48548cba3f492f820627575ccab240a6387ffffd
SSDeep: 12288:3v3NeALfAmzzZv7AR6pBHprI28rTbCj/hZR6/:vN/L4mzZvEwr38PbajA/
Size: 521504 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2011-07-27 04:43:48
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):

zmmon.exe:1264
ZKJxkNR73D83.exe:2016
%original file name%.exe:1664
tasklist.exe:424
tasklist.exe:480
zlmon.exe:504

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

axsvr.exe:1036
juovea.exe:252
svchost.exe:1116
spoolsv.exe:1448

Mutexes

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

File activity

The process zmmon.exe:1264 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\1.tmp (1281 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\2.tmp (0 bytes)

The process ZKJxkNR73D83.exe:2016 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\juovea.exe (2004827 bytes)

The process %original file name%.exe:1664 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\ZKJxkNR73D83.exe (943 bytes)
%Documents and Settings%\%current user%\axsvr.dll (172 bytes)
%Documents and Settings%\%current user%\zlmon.exe (24 bytes)
%Documents and Settings%\%current user%\axsvr.exe (27 bytes)
%Documents and Settings%\%current user%\zmmon.exe (2374 bytes)

Registry activity

The process zmmon.exe:1264 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D3 C1 90 45 79 26 04 8B 92 B5 06 8D 6C 66 3C 20"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\4.tmp,"

The process axsvr.exe:1036 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BC 19 60 21 5B 02 A6 5F A4 8C AC 87 6A 2B 7C 23"

The process ZKJxkNR73D83.exe:2016 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C0 6F CE AF A4 3F AE 4C 7D 7F 2C 00 BB 98 AD DA"

[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"

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

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%]
"juovea.exe" = "juovea"

[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]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

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

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"ShowSuperHidden" = "0"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"juovea" = "%Documents and Settings%\%current user%\juovea.exe /H"

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

"ProxyBypass" = "1"

The process %original file name%.exe:1664 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "33 DF BD C4 6C 8A D0 BB 07 53 3C C5 20 98 41 C1"

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "3D 79 D9 29 B2 56 67 A2 47 F0 12 FB 4A FA E9 B2"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"ShowSuperHidden" = "0"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"juovea" = "%Documents and Settings%\%current user%\juovea.exe /E"

The process tasklist.exe:424 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "52 9C DE F9 F3 5E 1A 38 56 31 E6 3C 81 D2 FA C4"

The process tasklist.exe:480 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6B A7 F9 63 20 3F B6 B4 30 E2 22 C8 64 4D 9A 13"

The process zlmon.exe:504 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "88 B5 73 36 DD 96 F7 54 BD 70 81 91 0B B7 05 34"

Dropped PE files

MD5 File path
1ce7ff3ab56b036b0355cbb532978996 c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\4.tmp
564fb51c90f91e749fc002446cfe8a09 c:\Documents and Settings\"%CurrentUserName%"\axsvr.dll
4728d25b809d631018ce6dcc32bb0a8e c:\Documents and Settings\"%CurrentUserName%"\axsvr.exe
2ad8b4d88ee57f7b92c393b302026512 c:\Documents and Settings\"%CurrentUserName%"\juovea.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

Using the driver "UNKNOWN" the Trojan controls loading executable images into a memory by installing the Load image notifier.
Using the driver ROOTKITPATH the Trojan intercepts DriverStartIO in a miniport driver of a hard drive controller (ATAPI) to handle request to its own files:

StartIo

Propagation

VersionInfo

No information is available.

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 4096 109019 109056 4.58408 3bca5dfb813e47e4d61b2ef2a0b421dc
.rdata 114688 29438 29696 3.22113 f9c681dd97d3b60d0806e6834aaa89d9
.data 147456 19172 7680 2.859 113a3d325647d9d93e9233dd30a02894
.rsrc 167936 10098 10240 3.33665 a2789b068cbfdafdde65c3af22025037

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

No activity has been detected.

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Web Traffic was not found.

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

axsvr.exe_1036:

.text
`.data
.link
.rloc
axsvr.exe
axsvr.dll
COMCTL32.DLL
GDI32.DLL
KERNEL32.DLL
OLE32.DLL
OLEAUT32.DLL
USER32.DLL
CreateDialogIndirectParamA
SetWindowsHookExA

juovea.exe_252:

.text
`.data
.rsrc
MSVBVM60.DLL
U.lPJ
VBA6.DLL
cmdNextTip
%Program Files%\Microsoft Visual Studio\VB98\VB6.OLB
cmdOK
TIPOFDAY.TXT
TtwSqtkrdyoH.exe

svchost.exe_1116_rwx_009F0000_0001B000:

Fmsvcrt.dll
%d %d %d %d %d %d
hXXps://
hXXp://
.com/
Global\C3819288-93FA-4E29-A254-BD9476B53C20
cfg.ini
%s\%s
bckfg.tmp
lsflt7.ver
0;225;224;77;38;56;16;74;75
maxhttpredirects
software\microsoft\windows\currentversion\internet settings
enablehttp1_1
software\microsoft\windows\currentversion\internet settings\zones\3
{AEBA21FA-782A-4A90-978D-B72164C80120}
{A8A88C49-5EB2-4990-A1A2-0876022C854F}
Opera\Opera\operaprefs.ini
\profile\operaprefs.ini
\prefs.js
network.cookie.cookieBehavior
Mozilla\Firefox\Profiles\
/login/;/tweet/;action=embed-flash;/faq/;/terms/;/contact/;/Forgotpassword/
hXXp://%s/?xurl=%s&xref=%s
ole32.dll
winmm.dll
atl.dll
oleaut32.dll
clk=%s&bid=%s&aid=%s&sid=%s&rd=%s
n%D,3
Global\6C29A0C8-62C6-415C-9538-B87690BC58D2
lsash.xp
%d|%d|%s|%s
cmd.dll
cmd64.dll
setup.exe
%u|%s
%s=%u|%s
%[^.].%[^(](%[^)])
command|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s
masks|%s
hXXp://NO REF/
.softgeek.
%s#%s
url|%s%s|
%s.dll
kernel32.dll
12345678
0123456789
.text
.rdata
HTTP/1.1 302 Found
Location: %s
HTTP/1.1 200 OK
Content-Length: %d
%sConnection: close
<body><a id=link target=_top></body><script>var url='%s';try{var x=document.getElementById('link');x.href=url;x.click()}catch(e){try{var x=parent?parent:window;x.location.replace(url)}catch(e){}}</script><noscript><META http-equiv="refresh" content="0;URL='%s'"></noscript>
<iframe src='%s' style='visibility:hidden;'></iframe>
<script>history.back()</script>
Set-Cookie: %s; expires=%s, u-%s-u u:u:u GMT
urlmon.dll
Global\56684A82-D074-4384-AEB9-D1A40041D9FB
chrome
wermgr.exe
-queuereporting_svc
firefox
opera
Global\B10C62E4-234C-4BF6-A1D5-1C0309CED145
svchost.exe
Global\a68d7de8-eba6-4a54-90e0-9cb9d93b3ed7
Global\cc51461b-e32a-4883-8e97-e0706dc65415
keywords
Accept-Language: %s
%s hXXp://%s/?xurl=%s&xref=%s
%s %s
1.8|%s|%s|%s|%s|%s|%s
software\classes\http\shell\open\command
<>:"/\|?*
%s-%s
. d SP.%s
google;yahoo;bing.;live.com;msn.com;altavista.com;ask.com;exalead.com;excite.com;dogpile.com;metacrawler.com;webcrawler.com;alltheweb.com;.lycos.;gigablast.com;cuil.com;.aol.;entireweb.com;.search.com;mamma.com;mytalkingbuddy.com;about.com;conduit.com;alexa.com;alltheinternet.com;blinkx.com;aolcdn.com;othersonline.com;everesttech.net;adrevolver.com;tribalfusion.com;adbureau.net;abmr.net;gstatic.com;virtualearth.net;atdmt.com;ivwbox.;powerset.net;yimg.com;2mdn.net;doubleclick.net;iwon.com;scorecardresearch.com;66.235.120.66;66.235.120.67;ytimg.com;infospace.com;edgesuite.net;superpages.com;lygo.com;compete.com;firmserve.com;worthathousandwords.com;yieldmanager.com;wazizu.com;meedea.com;atwola.com;doubleverify.com;tacoda.net;truveo.com;openx.org;adcertising.com;twimg.com;picsearch.com;oneriot.com;.com.com;flickr.com;searchvideo.com;.tqn.com;myspacecdn.com;fimservecdn.com;alexametrics.com
%u|%u
ver=%s&bid=%s&aid=%s&sid=%s&rd=%s&eng=%s&q=%s
hXXp://%s%s
VVV.google.
search.yahoo.com
.altavista.com
/web/results
.ask.com
VVV.exalead.com
/search/web/results
VVV.alltheweb.com
search.lycos.
tab=web
gigablast.com
cuil.com
.aol.
entireweb.com
md=web
VVV.search.com
VVV.mamma.com
mytalkingbuddy.com
searchservice.myspace.com
type=web
search.conduit.com
search.toolbars.alexa.com
alltheinternet.com
/ws/results/web/
?xurl=
http/1.
mozilla
windowsupdate
590612975
1429695310
\\?\globalroot\device\000001d9\2188754f\lsash.xp
%WinDir%\System32\svchost.exe
\\?\globalroot\device\000001d9\2188754f
\\?\globalroot\device\000001d9\2188754f\cfg.ini
WinExec
SHEnumKeyExA
ExitWindowsEx
HttpOpenRequestA
HttpSendRequestA
HttpQueryInfoW
InternetCrackUrlA
`.rdata
@.data
.reloc
rt.dll
 https
l\C3819288-93FA-4E29-A254-BD9476]
cfg.inics\
HTTP/1.1 3
%u,bmr
.]TCpP
KERNEL32.DLL
ADVAPI32.dll
imagehlp.dll
ntdll.dll
SHELL32.dll
SHLWAPI.dll
USER32.dll
WININET.dll
WebBrowser
127.0.0.1
.google.
%s-%d
eplorer\iexplore.exe" -nohome

spoolsv.exe_1448_rwx_00F40000_00027000:

.text
`.rdata
@.data
.config
.reloc
t%SSS
N. d SP.
%x%x%x%x%x%x
%s|%s|%s|%x|%x|%s|%x|%x|prn15
%[^;];%[^;];%[^;];
kernel32.dll
ntdll.dll
\\?\globalroot\systemroot\system32\kernel32.dll
%s\cfg.ini
%s\config.ini
%s\drv32
cmd.dll
%s\bckfg.tmp
%s\cmd.dll
%s\cmd64.dll
%[^|]|%[^|]|%s
system\currentcontrolset\services\%x
\\?\globalroot%s\cmd.dll
\\?\globalroot%s\cfg.ini
\\?\globalroot%s\bckfg.tmp
%d.%d.%d %d:%d:%d
\\?\globalroot%s\ldr16
\\?\globalroot%s\ldr32
\\?\globalroot%s\ldr64
\\?\globalroot%s\drv64
\\?\globalroot%s\cmd64.dll
cmd64.dll
\\?\globalroot%s\drv32
\\?\globalroot\systemroot\system32\kdcom.dll
\\?\globalroot\systemroot\system32\hal.dll
\\?\globalroot\systemroot\system32\ntoskrnl.exe
\\?\globalroot\systemroot\system32\drivers\etc\hosts
aid=%s
sid=%s
installdate=%s
*=cmd.dll
* (x64)=cmd64.dll
[cmd]
srv=%s
wsrv=%s
psrv=%s
cfg.ini
bckfg.tmp
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"><ms_asmv2:trustInfo xmlns:ms_asmv2="urn:schemas-microsoft-com:asm.v2"><ms_asmv2:security><ms_asmv2:requestedPrivileges><ms_asmv2:requestedExecutionLevel level="requireAdministrator"></ms_asmv2:requestedExecutionLevel></ms_asmv2:requestedPrivileges></ms_asmv2:security></ms_asmv2:trustInfo></assembly>
ZwConnectPort
spoolsv.exe
GetWindowsDirectoryW
KERNEL32.dll
RegCreateKeyA
RegCloseKey
ADVAPI32.dll
SHDeleteKeyA
SHLWAPI.dll
imagehlp.dll
PSAPI.DLL
RPCRT4.dll
InternetCrackUrlA
HttpOpenRequestA
HttpSendRequestA
WININET.dll
ShellExecuteW
SHELL32.dll
ole32.dll
WINSPOOL.DRV
.pnLu
`.reloc
kdcom.dll
ntoskrnl.exe
`.pdata
F.il|
rD.mK
Ls.Tc
ZuDP
u.cq[
%|'.IQ{S%.f1
.ZyDL
>g?.yC
.PFkX
:F-I}|
.JOf~
O.BY#
\{x-x-x-x-xx}
\registry\machine\%S
\??\physicaldrive%d
services.exe
\??\globalroot\systemroot\system32\tasks\%x
\\?\globalroot%s
%s.manifest
%s\setup%u.exe
r\\?\globalroot%s

spoolsv.exe_1448_rwx_012E0000_00047000:

.itext
@.text
`.edata
@.rdata
@.data
.rsrc
@.reloc
KERNEL32.dll
ScaleViewportExtEx
GDI32.dll
SHLWAPI.dll
comdlg32.dll
COMCTL32.dll
GetKeyState
VkKeyScanW
MapVirtualKeyExA
USER32.dll
ntdll.dll
BbRtJfwnRSDv.exe
$}.Ww
zg.SO
.%U#E:U
SSh?Vl
7"s.QD
.gT.o
\1%X*j"
7.vm^
nY..EA
3,.Xb
UrL=f2
_.ywp
H:\tmtxZlu\PfTh\ZNRHnkU\bRrFYv.pdb
8”9x9
3#3)31373=3
7&707`7~7
3 3$3(3,3034383<3
F:\gjkLHJjfhkjl\LKJDkljkdlj\KJDFj.hhg
Mlpnqqbeipgsshxi


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. Scan a system with an anti-rootkit tool.
  2. Terminate malicious process(es) (How to End a Process With the Task Manager):

    zmmon.exe:1264
    ZKJxkNR73D83.exe:2016
    %original file name%.exe:1664
    tasklist.exe:424
    tasklist.exe:480
    zlmon.exe:504

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

    %Documents and Settings%\%current user%\Local Settings\Temp\1.tmp (1281 bytes)
    %Documents and Settings%\%current user%\juovea.exe (2004827 bytes)
    %Documents and Settings%\%current user%\ZKJxkNR73D83.exe (943 bytes)
    %Documents and Settings%\%current user%\axsvr.dll (172 bytes)
    %Documents and Settings%\%current user%\zlmon.exe (24 bytes)
    %Documents and Settings%\%current user%\axsvr.exe (27 bytes)
    %Documents and Settings%\%current user%\zmmon.exe (2374 bytes)

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

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "juovea" = "%Documents and Settings%\%current user%\juovea.exe /H"

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "juovea" = "%Documents and Settings%\%current user%\juovea.exe /E"

  6. Reboot the computer.

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

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