Backdoor:W32/Pushbot.gen!A

Classification

Malware

Backdoor

W32

W32/Sdbot.worm, GenPack:Generic.Malware.SYN!!BdQ!wg.78A8B029, W32.IRCBot (Symantec), Worm:Win32/Pushbot (Microsoft), W32/Sdbot.worm (McAfee)

Summary

A remote administration tool (RAT) that bypasses the security features of a program, computer or network to give unauthorized access or control to its user.

Removal

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

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Knowledge Base

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User Guide

See the user guide for your product on the Help Center.

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

Pushbot is a backdoor program that can be operated through IRC. The backdoor is usually sized around 28-55KB.Pushbot is able to propagate through multiple vectors:

  • Removable media such as USB thumb drives
  • Instant Messaging (IM) networks such as AIM, MSN, ICQ and Triton
  • Network shares
  • Peer-to-Peer (P2P) networks such as Edonkey2000, Morpheus, KAZAA, LimeWire, BearShare and Grokster (via the application's shared folders)

Installation

During installation, the backdoor program creates a copy of itself in:

  • %windir%\service.exe

Activity

Upon execution, Pushbot displays the following:

While active, the program has the following functionalities:

  • Perform SYN Floods
  • Perform Distributed Denial of Service (DDoS) attacks
  • View MSN, AIM and Triton Threads
  • Propagate via AIM, MSN and Triton
  • Download files
  • Update itself
  • Steal passwords from Protected Storage
  • View processes
  • Create processes
  • Visit user defined websites
  • Perform shell executions

The backdoor program is also able to detect applications or services such as VMware, Nepenthes, sandboxes and honeypots.

Registry

The backdoor program creates the following Registry key in order to automatically execute its copy in the Windows directory:

  • SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Services = "service.exe"

It also creates the following Autorun.inf to facilitate its propagation on removable media such as USB thumb drives:

  • [autorun]open=RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\autorunme.exeicon=%SystemRoot%\system32\SHELL32.dll,4action=Open folder to view filesshell\open=Openshell\open\command=RECYCLER\S-1-6-21-2434476501-1644491937-600003330-1213\autorunme.exeshell\open\default=1

Date Created: 2009-03-26 04:12:16.0

Date Last Modified: 2009-08-11 04:35:59.0