Trojan-PSW.Win32.Hooker

Detect Date 11/25/2001
Class Trojan-PSW
Platform Win32
Description

Technical Details

This program belongs to the family of password-stealing Trojans.

When activated, the Trojan installs itself to the system. While installing, the Trojan copies itself to the Windows or Windows system directory and registers itself in the system registry auto-run section. For example:

Trojan full name: WINDOWSSYSTEMkernel32.exe
Registry key:
HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionRun
kernel32 = kernel32.exe

The installed Trojan file name, the target directory and registry key are optional. They are stored in encrypted form in the Trojan file at the file end.
A hacker may configure them before sending the Trojan to a victim’s machine, or before putting it on a Web site.

The Trojan then registers itself in the system as a hidden application (service), and the Trojan’s process at this time is not visible in the task list. The Trojan also can drop an additional DLL library to intercept keyboard entries and to store these entries.

Being active in the system, the Trojan periodically sends e-mail messages to its host (hacker’s e-mail address, which is also optional). The message contains the following: computer information (owner, Internet address, etc.), RAS information, cached passwords (login name and password) as well as text strings that are entered by a user during a Windows session.