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Date discovered:12/07/2011
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:175.616 Bytes
MD5 checksum:3C244D2FA504E645C4C71139A6146425
VDF version: - Tuesday, July 12, 2011
IVDF version: - Tuesday, July 12, 2011

 General Method of propagation:
   • Messenger

   •  Kaspersky:
   •  Microsoft: Trojan:Win32/Rimod

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

Side effects:
   • Drops files
   • Lowers security settings
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %APPDATA%\J-93219-1923-12901\msnmsg32.exe

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

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Mobile Device Service"="%APPDATA%\J-93219-1923-12901\msnmsg32.exe"

It creates the following entry in order to bypass the Windows XP firewall:

– [HKLM\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\
   • "%APPDATA%\J-93219-1923-12901\msnmsg32.exe"="%APPDATA%\J-93219-1923-12901\msnmsg32.exe:*:Enabled:Mobile
      Device Service"

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

– Yahoo Messenger

The sent message looks like one of the following:

   • hauska kuva!!! %link%
     !! haha wow %link%
     Burada komik bak!! %link%
     ceea ce o imagine nebun wow haha %link%
     du ser fint her! woww %link%
     haha omg crazy %link%
     hahahah nice billede :) %link%
     hahahahahaha!!!woww %link%
     hahahahahahahahaahahahahhaha %link%
     kijken naar wow hah %link%
     pogledaj ove slike!! %link%
     poglej to fotografijo!!! %link%
     pozrite sa na tto fotografi wow %link%
     r en rolig bild %link%
     sei bella in questa foto!! %link%
     te ves hermosa aqus belle photo! heheh %link%
     ten pic jest zabawne! hah %link%
     wer hat dieses Bild? wow %link%
     you look so weird in this pic!!! %link%

 Miscellaneous  Checks for an internet connection by contacting the following web sites:

 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 Friday, September 30, 2011
Description updated by Andrei Ilie on Friday, September 30, 2011

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