McAfee > Theat Center > Virus Detail Page

Overview

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-Downloader.Win32.Alphabet.gen (AVP)

Characteristics

If the file is executed from the temp folder, it will try to download a piece of malware from the following website:
http://s2.bestmanage.org/?name=[REMOVED]

Note: The downloaded file will be stored in the temp folder and it is detected as Spyre trojan

If the file is run from a different folder, it will create a copy of itself in the temp folder. The filename is randomly generated by concatenating two strings from those listed below and then by adding the extension ".exe".

• host
• agent
• sys
• server
• win
• sv
• look
• syn
• power
• mon
• 32
• 64
• 16

Examples:
agentserver.exe, syswin.exe, sys32.exe, monsv.exe, synpower.exe, 16host.exe, etc

Symptoms

• The computer will try to contact http://s2.bestmanage.org
• Some files with a name generated as explained previously may be found in the temp folder

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 -

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-Downloader.Win32.Alphabet.gen (AVP)

Characteristics

Characteristics -

If the file is executed from the temp folder, it will try to download a piece of malware from the following website:
http://s2.bestmanage.org/?name=[REMOVED]

Note: The downloaded file will be stored in the temp folder and it is detected as Spyre trojan

If the file is run from a different folder, it will create a copy of itself in the temp folder. The filename is randomly generated by concatenating two strings from those listed below and then by adding the extension ".exe".

• host
• agent
• sys
• server
• win
• sv
• look
• syn
• power
• mon
• 32
• 64
• 16

Examples:
agentserver.exe, syswin.exe, sys32.exe, monsv.exe, synpower.exe, 16host.exe, etc

Symptoms

Symptoms -

• The computer will try to contact http://s2.bestmanage.org
• Some files with a name generated as explained previously may be found in the temp folder

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