Need help? Ask the community or hire an expert.
Go to Avira Answers
Virus:TR/VB.aha.1
Date discovered:13/06/2006
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Medium to high
Damage Potential:Medium
Static file:Yes
File size:81.920 Bytes
MD5 checksum:26799179FAA5FFEB74AAD484DE3F2A3C
VDF version:6.35.00.19
IVDF version:6.35.00.25 - Wednesday, June 14, 2006

 General Methods of propagation:
    Autorun feature
    Messenger


Aliases:
   •  TrendMicro: WORM_OTORUN.DGD
   •  Sophos: W32/VB-FIY
     Microsoft: Trojan:Win32/VB.AHA


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


Side effects:
   • Drops files
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %TEMPDIR%\winlogon.exe

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

  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Service"="%TEMPDIR%\winlogon.exe"



The following registry keys are added:

[HKLM\SOFTWARE\Microsoft\Security Center]
   • "UACDisableNotify"=dword:00000000

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system]
   • "EnableLUA"=dword:00000000

 File details Programming language:
The malware program was written in Visual Basic.


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 Wednesday, September 21, 2011
Description updated by Andrei Ilie on Wednesday, September 21, 2011

Back . . . .