Troj/Torpig-A

Category: Viruses and Spyware
Type: Trojan
Prevalence: Small Number of Reports

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Troj/Torpig-A is a Trojan for the Windows platform.

The Trojan logs keypresses and open window titles to text files and periodically sends the collected information to a remote user via HTTP.

The Trojan downloads and executes additional files from a remote site. Configuration files may also be downloaded which define further behaviors. Troj/Torpig-A is a Trojan for the Windows platform.

When run, Troj/Torpig-A creates a subfolder under the Windows system folder named "service" and creates the following files:

<Windows system folder>\service\dll.dll
<Windows system folder>\service\dllp.txt
<Windows system folder>\service\explorer.exe

The dll.dll file is a keylogging component while the dllp.txt file is used for data storage.

In order to run each time a user logs on, Troj/Torpig-A sets the following registry entry:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
explorer
<Windows system folder>\service\explorer.exe

The Trojan logs keypresses and open window titles to text files and periodically sends the collected information to a remote user via HTTP.

The Trojan downloads and executes additional files from a remote site. Configuration files may also be downloaded which define further behaviors.

Troj/Torpig-A automatically closes security warning messages displayed by common anti-virus and security related applications.

The Trojan may set several entries under the following registry locations:

HKCU\Software\Microsoft\Windows\CurrentVersion\pwd

HKCU\Software\Microsoft\Windows\CurrentVersion\gnum

HKCU\Software\Microsoft\Windows\CurrentVersion\myID2

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