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Virus Profile: DNSChanger.t

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 30/04/2009
Date Added: 30/04/2009
Origin: N/A
Length: Varies
Type: Trojan
Subtype: Win32
DAT Required: 5601
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.  The main objective of this trojan is to change the default DNS entries to its own preferred DNS server.

Indication of Infection

Presence of the above-mentioned file and traffic to unknown IPs.

Methods of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

Aliases

Backdoor.Tidserv (Symantec), Trojan:Win32/Alureon.gen!U (Microsoft)
   

Virus Characteristics

This Trojan is dropped by other malware. When run, it drops the following file in the %WINDIR%\system32 folder:

kbiwkmlog.dat (the filename can vary)

Here, %WINDIR% corresponds to the Windows directory, usually C:\Windows.

The trojan is injected into the memory of other processes and logs user activities to the above-mentioned  file(s).

Also, there is some TCP traffic generated to 69.228.43.8.

   

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

   

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