Content

BackDoor-CXK

Type
Trojan
SubType
Remote Access
Discovery Date
02/02/2006
Length
32,797
Minimum DAT
4688 (02/02/2006)
Updated DAT
4688 (02/02/2006)
Minimum Engine
5.1.00
Description Added
02/02/2006
Description Modified
02/08/2006 1:55 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

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Characteristics

This trojan is a remote access trojan. There are several variants of this trojan, and the specific actions taken are decided by the hacker who uses this trojan. The description is a general guide. Newer variant requires the latest DATs for detection.

Upon execution, the trojan drops itself to

  • C:\WINDOWS\system32\msoff.exe
It also drops the following files.
  • C:\documents and settings\%USER%\local settings\temp\jav2.tmp (dll file)
  • C:\documents and settings\all users\documents\settings\desktop.ini

The trojan injects the dll file jav2.tmp to the process IExplore.exe and opens a random port. It also attempts to send the notification to mail.ru via e-mail.

Symptoms

  • Unexpected smtp connections
  • Presence of the mentioned files

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, email, etc.

Removal

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

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 trojan is a remote access trojan. There are several variants of this trojan, and the specific actions taken are decided by the hacker who uses this trojan. The description is a general guide. Newer variant requires the latest DATs for detection.

Upon execution, the trojan drops itself to

  • C:\WINDOWS\system32\msoff.exe
It also drops the following files.
  • C:\documents and settings\%USER%\local settings\temp\jav2.tmp (dll file)
  • C:\documents and settings\all users\documents\settings\desktop.ini

The trojan injects the dll file jav2.tmp to the process IExplore.exe and opens a random port. It also attempts to send the notification to mail.ru via e-mail.

Symptoms

Symptoms -

  • Unexpected smtp connections
  • Presence of the mentioned files

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, email, etc.

Removal -

Removal -

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

Variants

Variants -

    N/A