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Trojan:Win32/Rimecud.I

First posted on 31 July 2010.
Source: SecurityHome

Aliases :

Trojan:Win32/Rimecud.I is also known as PE_VIRUX.Q (Trend Micro), Virus.Win32.Virut.ce (Kaspersky), W32/Scribble-B (Sophos), W32.Virut.CF (Symantec).

Explanation :

Trojan:Win32/Rimecud.I is a malicious program that is unable to spread of its own accord. It may perform a number of actions of an attacker's choice on an affected computer.
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Trojan:Win32/Rimecud.I is a malicious program that is unable to spread of its own accord. It may perform a number of actions of an attacker's choice on an affected computer. Installation When executed, Trojan:Win32/Rimecud.I copies itself to c:\recycler\s-1-5-21-0243936033-3052116371-381863308-1811\vsbntlo.exe.
The malware modifies the following registry entries to ensure that its copy executes at each Windows start:

Adds value: "12CFG214-K641-12SF-N85P"
With data: "c:\recycler\s-1-5-21-0243936033-3052116371-381863308-1811\vsbntlo.exe"
To subkey: HKCU\Software\Microsoft\windows\currentversion\run
The malware creates the following files on an affected computer:

c:\recycler\s-1-5-21-0243936033-3052116371-381863308-1811\desktop.ini

The malware utilizes code injection in order to hinder detection and removal. When Trojan:Win32/Rimecud.I executes, it may inject code into running processes, including the following, for example:

explorer.exe

winlogon.exe

Payload Modifies Hosts file Trojan:Win32/Rimecud.I modifies the Windows Hosts file. The local Hosts file overrides the DNS resolution of a website URL to a particular IP address. Malicious software may make modifications to the Hosts file in order to redirect specified URLs to different IP addresses. Malware often modifies an affected computer's Hosts file in order to stop users from accessing websites associated with particular security-related applications (such as antivirus for example).
Contacts remote hosts The malware may contact the following remote hosts: ilo.brenz.pl using port 80
p34s3.hmarhelo.com using port 1199
Commonly, malware may contact a remote host for the following purposes:

• To confirm Internet connectivity
• To report a new infection to its author
• To receive configuration or other data
• To download and execute arbitrary files (including updates or additional malware)
• To receive instruction from a remote attacker
• To upload data taken from the affected computer

This malware description was produced and published using our automated analysis system's examination of file SHA1 0fae177143f86f54573f5f164d2265b633e57a48.

Last update 31 July 2010

 

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