Virus Profile: Vundo!di

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 10/4/2009
Date Added: 10/4/2009
Origin: N/A
Length: N/A
Type: Trojan
Subtype: N/A
DAT Required: 5761
Removal Instructions
   
 
 
   

Description

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Indication of Infection

  • Existence of Registry keys mentioned above.
  • Outgoing traffic to following remote server:
      thestatusinfo.com

Methods of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. They may also be received as a result of poor security practices, or un-patched machines and vulnerable systems. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, etc
   

Virus Characteristics

The malware sample is injected into processes like iexplore.exe, explorer.exe, services.exe, winlogon.exe, firefox.exe, opera.exe. Like earlier variants of this trojan it has functionality to connect to remote server and display ads.

It creates following registry entries:

  • HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\[DLL Name] = 0x2001F
  • HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\[DLL Name]\Asynchronous = 0x1
  • HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\[DLL Name]\DllName = "%SYSTEM%\[DLL Name]"
  • HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\[DLL Name]\Impersonate = 0x0
  • HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\[DLL Name]\Startup = "B"
  • HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\[DLL Name]\Logon = "B"
   

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

Additional Windows ME/XP removal considerations