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Virus:WORM/Ainslot.A.1046
Date discovered:14/06/2011
Type:Worm
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
File size:501.248 Bytes
MD5 checksum:3198C08985BFE23232EAD51418E3A896
VDF version:7.11.09.168 - Tuesday, June 14, 2011
IVDF version:7.11.09.168 - Tuesday, June 14, 2011

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Mcafee: Ainslot.b
   •  Kaspersky: Trojan.Win32.VBKrypt.difd
   •  TrendMicro: TROJ_VB.WPW
   •  Sophos: Mal/Ainslot-B
   •  Microsoft: Worm:Win32/Ainslot.A


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


Side effects:
   • Drops files
   • Registry modification

 Files It copies itself to the following location:
   • %APPDATA%\black.exe



The following file is created:

– %APPDATA%\data.dat Contains parameters used by the malware.

 Registry To each registry key one of the values is added in order to run the processes after reboot:

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\
   run]
   • "Windows Defender"="%APPDATA%\black.exe"

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Defender"="%APPDATA%\black.exe"

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Defender"="%APPDATA%\black.exe"



The following registry keys are added:

– [HKCU\Software\Microsoft\Active Setup\Installed Components\
   {EF896FDC-DCB3-9EED-A24D-3DB2AFFD0F3D}]
   • "StubPath"="%APPDATA%\black.exe"

– [HKCU\Software\VB and VBA Program Settings\SrvID\ID]
   • "NJ13M066E8"="whitedevil112's Bo"

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

    Process name:
   • explorer.exe


 Miscellaneous Accesses internet resources:
   • whitedevil112.no-ip.biz

 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.

설명 삽입자 Andrei Ilie   2011년 7월 27일 수요일
설명 업데이트 Andrei Ilie   2011년 7월 27일 수요일

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