Trojan Rootkit Tmphider

Overall Risk Level :

Trojan Rootkit Tmphider is a detection for a rootkit that propagates via USB and removable drives. Trojan Tmphider rootkit technology was designed to hide itself from antivirus and other security programs installed on the computer. A shortcut link detected as W32.Temphid!lnk will be created to execute it on every part of the drive.

Alias: W32.Temphid

Damage Level: Medium

Systems Affected: Windows 9x, 2000, XP, Vista, Windows 7

Manual Removal of Trojan Rootkit Tmphider

1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. Update the virus definitions.

3. Find and stop the service
- Click Start > Run.
- Type services.msc, and then click OK.
- Locate and select the service that was detected.

Display Name: MRXCLS
Startup Type: Automatic
Image Path: %System%\drivers\mrxcls.sys

- Click Action > Properties.
- Click Stop.
- Change Startup Type to Manual.
- Click OK and close the Services window.

4. Reboot computer in SafeMode [how to]
5. Run a full system scan and clean/delete all infected file(s)
6. Delete/Modify any values added to the registry. [how to edit registry]

Navigate to and delete the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MRxCls\”ImagePath” = “%System%\drivers\mrxcls.sys”
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MRxNet\”ImagePath” = “%System%\drivers\mrxnet.sys”

7. Exit registry editor and restart the computer.
8. In order to make sure that threat is completely eliminated from your computer, carry out a full scan of your computer using AntiVirus and Antispyware Software. Another way to delete the virus using various Antivirus Program without the need to install can be done with Online Virus Scanner.

[Source]