Need help? Ask the community or hire an expert.
Go to Avira Answers
Date discovered:02/04/2013
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
File size:146944 Bytes
MD5 checksum:fc077d70131dfe1b77262abf91423479
VDF version:
IVDF version:

 General Method of propagation:
   • No own spreading routine

   •  Sophos: Troj/Bdoor-BEZ
   •  Bitdefender: Trojan.Generic.KD.923372
   •  Eset: a variant of Win32/Injector.AERC trojan
   •  DrWeb: Trojan.DownLoad.64636

Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows Server 2008
   • Windows 7

Side effects:
   • Registry modification

Right after execution the following information is displayed:

 Files It copies itself to the following locations:
   • %Temp%\%10 digit random character string% .pre
   • %Temp%\%random character string%\%10 digit random character string% .exe
   • C:\run\sample.exe

It deletes the initially executed copy of itself.

It deletes the following files:
   • %Temp%\%10 digit random character string% .pre
   • C:\run\sample.exe

 Registry One of the following values is added in order to run the process after reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "%random character string%"="%Temp%\\%random character string%\\%random character string%.exe"

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

– [HKLM\SYSTEM\ControlSet001\Control\Session Manager]
   • "PendingFileRenameOperations"="\??\%Temp%\%10 random character string%.pre;"

 Injection     All of the following processes:
   • %SYSDIR%\ctfmon.exe
   • %SYSDIR%\svchost.exe

 Miscellaneous Event handler:
It creates the following Event handlers:
   • IsProcessorFeaturePresent
   • IsDebuggerPresent
   • CreateFile

Description inserted by Wensin Lee on Wednesday, April 3, 2013
Description updated by Wensin Lee on Wednesday, April 3, 2013

Back . . . .