WORM_IRCBOT.WAT

October 09, 2012
 Analysis by: Cris Nowell Pantanilla
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This worm arrives via removable drives. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It connects to Internet Relay Chat (IRC) servers.

  TECHNICAL DETAILS

File Size:

529,986 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

31 Aug 2011

Arrival Details

This worm arrives via removable drives.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Autostart Technique

This worm adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
{random} = "{malware path and file name}"

Backdoor Routine

This worm connects to any of the following Internet Relay Chat (IRC) servers:

  • ircr0x.{BLOCKED}ls.net
  • ircr0x.{BLOCKED}h.info

As of this writing, the said sites are inaccessible.

Other Details

This worm connects to the following URL(s) to get the affected system's IP address:

  • http://api.wipmania.com/