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Date discovered:13/06/2011
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:94.208 Bytes
MD5 checksum:6231A63E383B632501AD9C87037A7E27
VDF version:
IVDF version:

 General Method of propagation:
   • Messenger

   •  Kaspersky: Backdoor.Win32.LolBot.ahn
   •  TrendMicro: BKDR_LOLBOT.IW
   •  Sophos: Troj/VB-FKU

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

Side effects:
   • Third party control
   • Drops malicious files
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following location:
   • %APPDATA%\HEX-5823-6893-6818\jusched.exe

 Registry The following registry key is added in order to run the process after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Java Update Manager"="%APPDATA%\HEX-5823-6893-6818\jusched.exe"

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

– [HKLM\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\
   • "%APPDATA%\HEX-5823-6893-6818\jusched.exe"="%APPDATA%\HEX-5823-6893-6818\jusched.exe:*:Enabled:Java
      Update Manager"

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

– Yahoo Messenger

The sent message looks like one of the following:

   • belas fotos nao de voce %link%
     vakre bilder fra deg. %link%
     hoi niet mooi fotos %link%
     ich sag nur geile fotos. %link%
     hey, beautiful facebook photos.. %link%
     muy hermosas fotos no?? %link%
     uh vos facebook photos? %link%
     wow le tue foto bellissime %link%
     ahoj, dobry den jste na? ... %link%
     uh flotte fotos fra dig %link%
     uh szep kepek rolad %link%
     uhh, ladne zdjecia z was. %link%
     Fotograflarinizi?? %link%
     uh valokuva ei ole? %link%
     woow, imagini frumoase din voi?? %link%
     u velmi pekne fotografie od vas? %link%
     vackra bilder fran dig %link%
     hoj so vase fotografije? %link%
     u lepo slike ne? ... %link%
     wow, fbphotos. %link%

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: **********
Port: 1866

– This malware has the ability to collect and send information such as:
    • Information about the Windows operating system

– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • disconnect from IRC server
    • Join IRC channel
    • Leave IRC channel

 File details 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 Monday, September 12, 2011
Description updated by Andrei Ilie on Tuesday, September 13, 2011

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