Sophos

Troj/Keylog-AK

Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from August 2005 (3.96)
Protection available since 7 July 2005 07:31:40 (GMT)
Detected by All Sophos products

Action

More Information

Troj/Keylog-AK is a password stealing Trojan which attempts to steal confidential information and send it to a remote location.

Troj/Keylog-AK includes functionality to steal confidential information including user account information, passwords from Hotmail, OutlookExpress, MSN Explorer, Microsoft Internet Account Manager and other email related applications.

Troj/Keylog-AK may also harvest information from the clipboard.

Once installed, Troj/Keylog-AK creates the folder <System>\service.

Troj/Keylog-AK then copies itself to <System>\service\explorer.exe and creates the following file and runs it:

<System>\service\dll.dll

This file is also detected as Troj/Keylog-AK. When first run, the DLL file component will begin to keylog information.

Troj/Keylog-AK may also create the following files:

<System>\service\dllw.txt
<System>\service\dlls.txt
<System>\service\dllp.txt
<System>\service\dll<random number>.txt
<System>\service\reoxconf1.sp
<System>\service\reoxconf.sp
<System>\service\reoxconf1.sam
<System>\service\reoxconf.sam
<System>\service\reoxconf.dl
<System>\service\scr<random number>.html

These files may be deleted.

The following registry entries are created to run explorer.exe on startup:

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

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run
<number>
<System>\service\explorer.exe

Troj/Keylog-AK may modify the HOSTS file which maps the URLs of selected websites to its own IP addresses, in order to affect redirection and therefore hijack browsing.

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