Antivirus and Security Software from Sophos

Sophos blogs

Troj/Progent-B

Aliases
  • Trojan-Spy.Win32.ProAgent.p
  • TROJ_WINCON.A
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 18 September 2005 15:30:09 (GMT)
Detected by All Sophos products
  • Free virus, spyware, and adware scan
  • Test your existing anti-virus protection
  • Find threats your anti-virus missed

Action

More Information

Troj/Progent-B is a Trojan for the Windows platform with functionality to:

extract password information for email accounts
log key presses and applications opened
email passwords and other significant information to a remote user
download and execute further files from a remote website
deactivate some anti-virus utilities

When first run Troj/Progent-B copies itself to <Windows>\wins32.exe and creates the following files, detected by Sophos's anti-virus products as components of Troj/Progent-B:

<Windows>\kurlmon.dll
<Windows>\msehk.dll
<Windows>\qservice.exe
<Windows>\services.dll
<System>\HookApi.dll

Troj/Progent-B also creates the following files:

<Temp>\htmpl.htm
<Windows>\k_urlmon.dll (a text file logging window titles and key presses)
<System>\bszip.dll (a file from a commercial zip/compression utility)

Troj/Progent-B hooks into the operating system so that most of its files do not show in Windows Explorer. However they are visible in directory listings from a command prompt.

The following registry entries are created to run wins32.exe and qservice.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
sqservices
<Windows>\wins32.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
qservices
<Windows>\qservice.exe

Troj/Progent-B also sets the following registry entry, disabling the automatic startup of other software:

HKLM\SYSTEM\CurrentControlSet\Services\srservice
Start
4

RSS|Atom
Get reports about the latest virus and spyware threats delivered to your computer