Content

BackDoor-AVH

Type
Trojan
SubType
Remote Access
Discovery Date
06/03/2003
Length
7,680 bytes
Minimum DAT
4270 (06/05/2003)
Updated DAT
4269 (06/04/2003)
Minimum Engine
5.1.00
Description Added
06/03/2003
Description Modified
06/10/2003 9:16 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

Tab Navigation

Characteristics

This remote access trojan opens TCP Port 8583 and sends email notification to the author, via ICQ mail. This email message contains the following information:

  • Victim IP Address
  • Port
  • User\Pass (to access the trojan server)
  • ServerName
  • WinVer
  • ComputerName
The trojan allows remote users to perform file operations, such as:
  • Upload\Download files
  • Create\Delete\Rename directories
  • Delete\Rename files
  • Execute programs
The trojan copies itself to the WINDOWS (%WinDir%) directory and creates a registry run key to load itself at system startup:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    Run "net" = C:\WINNT\net.exe
It creates an additional key value as well:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\
    net "StubPath" = C:\WINNT\net.exe ASC

Symptoms

TCP port 8583 being left opened.

Method 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, etc.

Removal

All Users:
Use specified 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

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.

Characteristics

Characteristics -

This remote access trojan opens TCP Port 8583 and sends email notification to the author, via ICQ mail. This email message contains the following information:

  • Victim IP Address
  • Port
  • User\Pass (to access the trojan server)
  • ServerName
  • WinVer
  • ComputerName
The trojan allows remote users to perform file operations, such as:
  • Upload\Download files
  • Create\Delete\Rename directories
  • Delete\Rename files
  • Execute programs
The trojan copies itself to the WINDOWS (%WinDir%) directory and creates a registry run key to load itself at system startup:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    Run "net" = C:\WINNT\net.exe
It creates an additional key value as well:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\
    net "StubPath" = C:\WINNT\net.exe ASC

Symptoms

Symptoms -

TCP port 8583 being left opened.

Method of Infection

Method 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, etc.

Removal -

Removal -

All Users:
Use specified 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

Variants

Variants -

    N/A