Full description

Virus:	BDS/IRCBot.DL.105
Date discovered:	15/05/2011
Type:	Backdoor Server
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low to medium
Damage Potential:	Medium
Static file:	Yes
File size:	197.280 Bytes
MD5 checksum:	4A1376AE66413095000D5DD3544C4128
VDF version:	7.11.08.22 - Sunday, May 15, 2011
IVDF version:	7.11.08.22 - Sunday, May 15, 2011

General Method of propagation:
   • Autorun feature

Aliases:
   • Kaspersky: Trojan-Spy.Win32.Zbot.bwjw
   • Sophos: Troj/Bckdr-RIR
   • Microsoft: Backdoor:Win32/IRCbot.DL
   • GData: Worm.Generic.317684
   • DrWeb: Trojan.DownLoader2.39345

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

Side effects:
   • Drops malicious files
   • Registry modification
   • Steals information

Files It copies itself to the following location:
• %APPDATA%\Microsoft\%random character string%.exe

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

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
• "%random character string%.exe"="%APPDATA%\Microsoft\%random character string%.exe"

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

Server: **********ney.no-ip.info
Port: 3074
Nickname: %random character string%

– This malware has the ability to collect and send information such as:
    • Username
    • 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

Backdoor The following port is opened:

– svchost.exe on UDP port 1900 in order to provide backdoor capabilities.

Stealing – Recorded passwords used by the AutoComplete function

– Passwords from the following programs:
• Mozilla Firefox
• Internet Explorer

Injection – It injects itself as a remote thread into a process.

Process name:
• svchost.exe

Miscellaneous Mutex:
It creates the following Mutex:
• HelloDDoser

File details Programming language:
The malware program was written in Delphi.

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 dinsdag 18 oktober 2011
Description updated by Andrei Ilie on woensdag 19 oktober 2011

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