Need help? Ask the community or hire an expert.
Go to Avira Answers
Virus:TR/Agent.psait
Date discovered:16/08/2011
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Medium to high
Damage Potential:Low to medium
Static file:Yes
File size:38.938 Bytes
MD5 checksum:3C4E8D106C02EEEB3E9FBE74B57F1B94
VDF version:7.11.13.90 - Tuesday, August 16, 2011
IVDF version:7.11.13.90 - Tuesday, August 16, 2011

 General Methods of propagation:
    Autorun feature
    Messenger


Aliases:
   •  Kaspersky: Worm.Win32.AutoRun.crvg
   •  Sophos: W32/IRCBot-AIR
     Microsoft: Worm:Win32/Nusump.H


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:
   • %TEMPDIR%\%random character string%.exe



It deletes the initially executed copy of itself.

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

  [HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\
   {254F4E25-A65F-2764-0003-070806050704}]
   • "StubPath"="%TEMPDIR%\%random character string%.exe"

 Messenger It is spreading via Messenger. The characteristics are described below:

Windows Live Messenger

 Miscellaneous Accesses internet resources:
   • **********rimor.serveblog.net

 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 Thursday, October 6, 2011
Description updated by Andrei Ilie on Friday, October 7, 2011

Back . . . .