high
Summary
Summary
Action- More Information
| Protection available since | 19 April 2004 13:57:44 (GMT) |
|---|---|
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing Trojans.
Change any data that may have become compromised.
Windows NT/2000/XP/2003
In Windows NT/2000/XP/2003 you will also need to edit the following registry entry. The removal of this entry is optional in Windows 95/98/Me. Please read the warning about editing the registry.
At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.
Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.
Locate the HKEY_LOCAL_MACHINE entry:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\Upgrade Service
and remove any reference to any file you deleted.
Close the registry editor.
More Information
Troj/Tofger-U is a multi-component Trojan.
The main dropper first terminates processes called WINUPD.EXE and then drops 3 files. It drops the keylogger Trojan component to the Windows folder as a file called WINUPD.EXE which is also detected as Troj/Tofger-U. It drops a DLL component to the keylogger to the Windows folder as a file called CMD32.DLL which is detected as Troj/Tofger-I. It also drops a process-killing component to the Windows system folder with the filename STROPEN.EXE which is detected as Troj/KillProc-D.
The main dropper sets the following registry entry so as to run the keylogger Trojan component dropped as WINUPD.EXE on system startup:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\Upgrade Service
The main dropper then executes the keylogger Trojan component dropped as WINUPD.EXE before attempting to delete itself.
The keylogger Trojan component registers itself as a service process and deletes all cached URL entries. It then logs keystrokes, clipboard contents and the information found in certain windows to a file in the Windows folder called SDSINI.INI.
Periodically the keylogger will run the process-killer dropped as STROPEN.EXE and then attempts to send the logged information by email via its own SMTP engine to the address x00x@list.ru.
After a period of time Troj/Tofger-U will attempt to delete itself from the system.
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