McAfee > Theat Center > Virus Detail Page

Overview

-- Update May 6, 2009 --
The risk assessment of this threat has been updated to Low-Profiled due to media attention at:
http://www.networkworld.com/news/2009/050409-leaked-copies-of-windows-7.html
--

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.

Aliases

• Trojan-Dropper.Win32.Agent.anje (Kaspersky)

• Win32:Agent-AEXI (Avast)

Characteristics

-- Update May 6, 2009 --
The risk assessment of this threat has been updated to Low-Profiled due to media attention at:
http://www.networkworld.com/news/2009/050409-leaked-copies-of-windows-7.html
--

Downloaders are designed to pull files from a remote website and execute the files that have been downloaded.

Upon execution it drops a downloading component into the following locations:

• %UserProfile%\Local Settings\Temp\vbruntime.tmp (Downloader-BPQ)

(Where %UserProfile% is the Windows user profile folder, e.g. C:\Documents and Settings\USER)

It injects the dropped component into explorer.exe and connects to the following domains to download other malwares:

• codecs.sy[blocked].net
• xu[blocked].info
• game-li[blocked].net

Currently the downloaded malware is detected as Generic BackDoor.k

Symptoms

• Presence of aforementioned files.
• Unexpected connection to the mentioned domains.

Method of Infection

N/A. Downloaders are not viruses, and as such do not themselves contain any method to replicate. However they may themselves be downloaded by other viruses and/or Trojans to be installed on the user's system.

Many of these additionally are mass spammed by the author to entice people into double-clicking on them.

Alternatively they may be installed by visiting a malicious web page (either by clicking on a link, or by the website hosting a scripted exploit which installs the Downloader onto the user's system with no user interaction.

Removal

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants

N/A

All Information

Overview -

-- Update May 6, 2009 --
The risk assessment of this threat has been updated to Low-Profiled due to media attention at:
http://www.networkworld.com/news/2009/050409-leaked-copies-of-windows-7.html
--

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.

Aliases

• Trojan-Dropper.Win32.Agent.anje (Kaspersky)

• Win32:Agent-AEXI (Avast)

Characteristics

Characteristics -

-- Update May 6, 2009 --
The risk assessment of this threat has been updated to Low-Profiled due to media attention at:
http://www.networkworld.com/news/2009/050409-leaked-copies-of-windows-7.html
--

Downloaders are designed to pull files from a remote website and execute the files that have been downloaded.

Upon execution it drops a downloading component into the following locations:

• %UserProfile%\Local Settings\Temp\vbruntime.tmp (Downloader-BPQ)

(Where %UserProfile% is the Windows user profile folder, e.g. C:\Documents and Settings\USER)

It injects the dropped component into explorer.exe and connects to the following domains to download other malwares:

• codecs.sy[blocked].net
• xu[blocked].info
• game-li[blocked].net

Currently the downloaded malware is detected as Generic BackDoor.k

Symptoms

Symptoms -

• Presence of aforementioned files.
• Unexpected connection to the mentioned domains.

Method of Infection

Method of Infection -

N/A. Downloaders are not viruses, and as such do not themselves contain any method to replicate. However they may themselves be downloaded by other viruses and/or Trojans to be installed on the user's system.

Many of these additionally are mass spammed by the author to entice people into double-clicking on them.

Alternatively they may be installed by visiting a malicious web page (either by clicking on a link, or by the website hosting a scripted exploit which installs the Downloader onto the user's system with no user interaction.

Removal -

Removal -

AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

Additional Windows ME/XP removal considerations

Variants

Variants -

N/A