BKDR_IRCBOT.DAZ

October 09, 2012
 Analysis by: Kathleen Notario
 PLATFORM:

Linux

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

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

It joins an Internet Relay Chat (IRC) channel. It executes commands from a remote malicious user, effectively compromising the affected system.

  TECHNICAL DETAILS

File Size:

2,977 bytes

File Type:

Script

Initial Samples Received Date:

25 Oct 2011

Arrival Details

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

Backdoor Routine

This backdoor connects to any of the following IRC server(s):

  • {BLOCKED}et.{BLOCKED}texist.org
  • {BLOCKED}stick.{BLOCKED}ns-remote.com

It joins any of the following Internet Relay Chat (IRC) channels:

  • #jb

It executes the following commands from a remote malicious user:

  • Download files
  • Send message
  • Quit

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.520.07

FIRST VSAPI PATTERN DATE:

25 Oct 2011

Scan your computer with your Trend Micro product to delete files detected as BKDR_IRCBOT.DAZ. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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