BKDR_IRCBOT.FLR

October 09, 2012
 Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: Yes

  • 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 is a command line program that may be used to perform certain routines.

  TECHNICAL DETAILS

File Size:

96,768 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

29 Feb 2012

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 is a command line program that may be used to perform certain routines.

NOTES:

Below are the commands that can be used in this tool:

[Usage of Backdoor:]

  • create - Create AutoRun File
  • install - Install Service
  • remove - Remove Service
  • start - Start Service
  • stop - Stop Service
  • update - Update Service

[Usage of Function:]

  • b - Backdoor Client
  • c - Config Parameter
  • d - DDoS Attack
  • f - Port Banner Scanner
  • g - Ping/Name/SQL/IPC

Scanner

  • h - Help Info
  • m - Command Line SendMail
  • o - Show Other Function
  • p - Packet Transmit
  • s - Socks5 Proxy
  • u - Like UNIX su Tool
-x Sniffer

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.808.02

FIRST VSAPI PATTERN DATE:

29 Feb 2012

VSAPI OPR PATTERN File:

8.809.00

VSAPI OPR PATTERN Date:

01 Mar 2012

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Scan your computer with your Trend Micro product to delete files detected as BKDR_IRCBOT.FLR. 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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