Content

BackDoor-BAC.dll

Type
Trojan
SubType
Application extension
Discovery Date
12/08/2004
Length
various
Minimum DAT
4298 (10/15/2003)
Updated DAT
5897 (02/19/2010)
Minimum Engine
5.1.00
Description Added
04/21/2004
Description Modified
07/25/2007 10:52 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

Tab Navigation

Characteristics

Update: some variants will be also be capable of remotely control the machine and start/stop services.

This detection is for the DLL component of the BackDoor-BAC trojan. 

Once loaded the DLL monitors the browser sessions on the victim machine, logging keystroke data for windows containing any of the following strings:

  • gold
  • paypal
  • ebay
  • fethard
  • money
  • bank
  • banque
  • escrow
  • halifax
  • barclays
  • lloydstsb
  • hsbc
  • westpac
  • ikobo
  • bookers
  • barclays
  • creditmutuel
  • bullion
  • agricole
  • videoposte

For more information on this threat, please see the following description:
http://vil.nai.com/vil/content/v_101152.htm

The 4412 DATs contained detection for a 4,752 byte DLL as BackDoor-BAC.dll. This is actually a downloading trojan, and detection has been renamed to Downloader-TA.dll (will be in the 4414 DATs). Please see the following description for more details on this threat:
http://vil.nai.com/vil/content/v_130369.htm

Symptoms

For more information on this threat, please see the following description:
http://vil.nai.com/vil/content/v_101152.htm

Method of Infection

This DLL is likely to be installed on the victim machine as part of the BackDoor-BAC backdoor.

For more information on this threat, please see the following description:
http://vil.nai.com/vil/content/v_101152.htm

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 -

Update: some variants will be also be capable of remotely control the machine and start/stop services.

This detection is for the DLL component of the BackDoor-BAC trojan. 

Once loaded the DLL monitors the browser sessions on the victim machine, logging keystroke data for windows containing any of the following strings:

  • gold
  • paypal
  • ebay
  • fethard
  • money
  • bank
  • banque
  • escrow
  • halifax
  • barclays
  • lloydstsb
  • hsbc
  • westpac
  • ikobo
  • bookers
  • barclays
  • creditmutuel
  • bullion
  • agricole
  • videoposte

For more information on this threat, please see the following description:
http://vil.nai.com/vil/content/v_101152.htm

The 4412 DATs contained detection for a 4,752 byte DLL as BackDoor-BAC.dll. This is actually a downloading trojan, and detection has been renamed to Downloader-TA.dll (will be in the 4414 DATs). Please see the following description for more details on this threat:
http://vil.nai.com/vil/content/v_130369.htm

Symptoms

Symptoms -

For more information on this threat, please see the following description:
http://vil.nai.com/vil/content/v_101152.htm

Method of Infection

Method of Infection -

This DLL is likely to be installed on the victim machine as part of the BackDoor-BAC backdoor.

For more information on this threat, please see the following description:
http://vil.nai.com/vil/content/v_101152.htm

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