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In the wild:
Low to medium
- Sunday, December 20, 2009
Methods of propagation:
• Autorun feature
• Local network
• Mcafee: W32/Kolab
• Sophos: Troj/Agent-MFV
• Panda: W32/Kolabc.AW.worm
• Eset: Win32/AutoRun.IRCBot.DI
• Bitdefender: Backdoor.Bot.111901
Platforms / OS:
• Windows 2000
• Windows XP
• Windows 2003
• Downloads a malicious file
• Drops malicious files
• Registry modification
• Third party control
It copies itself to the following locations:
It deletes the following file:
The following files are created:
\autorun.inf This is a non malicious text file with the following content:
%code that runs malware%
– c:\x.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file. Detected as: Worm/IrcBot.50
It tries to download a file:
– The location is the following:
It tries to executes the following files:
• cmd /c ""c:\x.bat" "
• net stop "Security Center"
• net1 stop "Security Center"
One of the following values is added in order to run the process after reboot:
• "Universal Bus device"="usbdrv.exe"
It is spreading via Messenger. The characteristics are described below:
– AIM Messenger
– MSN Messenger
– Yahoo Messenger
The URL then refers to a copy of the described malware. If the user downloads and executes this file the infection process will start again.
In order to ensure its propagation the malware attemps to connect to other machines as described below.
It makes use of the following Exploits:
(Buffer Overrun in RPC Interface)
(Buffer Overrun in RPCSS Service)
(Vulnerability in Server Service)
IP address generation:
It creates random IP addresses while it keeps the first octet from its own address. Afterwards it tries to establish a connection with the created addresses.
To deliver system information and to provide remote control it connects to the following IRC Servers:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.
Description inserted by Petre Galan on Wednesday, March 31, 2010
Description updated by Petre Galan on Wednesday, March 31, 2010