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Virus:TR/Yakes.ajw
Date discovered:29/06/2011
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:50.176 Bytes
MD5 checksum:84912A4480E54ACC70D33084BA9C3A99
VDF version:7.11.10.166 - Wednesday, June 29, 2011
IVDF version:7.11.10.166 - Wednesday, June 29, 2011

 General Method of propagation:
   • Autorun feature


Aliases:
   •  Mcafee: W32/Autorun.worm.h
   •  Sophos: Mal/EncPk-AAG
   •  Microsoft: Worm:Win32/Autorun.ABO


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows 7


Side effects:
   • Third party control
   • Drops files
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %SYSDIR%\svrwsc.exe



The following file is created:

%TEMPDIR%\Low%hex values%.tmp.bat This batch file is used to delete a file.

 Registry The following registry keys are added in order to load the service after reboot:

– [HKLM\SYSTEM\ControlSet001\Services\SvrWsc]
   • "Type"=dword:00000010
   • "Start"=dword:00000002
   • "ErrorControl"=dword:00000000
   • "ImagePath"="\"%SYSDIR%\svrwsc.exe\""
   • "DisplayName"="Windows Security Center Service"
   • "ObjectName"="LocalSystem"
   • "Description"="The service provides COM APIs for independent software vendors to register and record the state of their products to the Security Center service."



The following registry key is added:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "SvrWsc"=""

 Backdoor Contact server:
The following:
   • etrademone.**********/point/forum/index.php

As a result it may send information and remote control could be provided.

 Injection – It injects itself as a remote thread into processes.

    All of the following processes:
   • explorer.exe
   • firefox.exe
   • iexplore.exe
   • msimn.exe
   • outlook.exe
   • rundll32.exe
   • services.exe
   • svchost.exe
   • userinit.exe
   • winlogon.exe

   If successful, the malware process terminates while the injected part remains active.

 File details Programming language:
The malware program was written in MS Visual C++.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Die Beschreibung wurde erstellt von Andrei Ilie am Donnerstag, 22. September 2011
Die Beschreibung wurde geändert von Andrei Ilie am Freitag, 30. September 2011

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