Full description

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.

Description inserted by Andrei Ilie on 27 Temmuz 2011 Çarşamba
Description updated by Andrei Ilie on 27 Temmuz 2011 Çarşamba

Geri . . . .

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