Threat description


Category: Malware
Type: Rootkit
Platform: W32
Aliases: Rootkit:​W32/Kobcka, Rootkit:​W32/Kobcka, Rootkit.Kobcka.Patched.Gen , Virus.Win32.Protector.g, Hacktool.Rootkit!inf (Symantec), Virus:Win32/Cutwail.I (Microsoft)


A program or set of programs which hides itself by subverting or evading the computer's security mechanisms, then allows remote users to secretly control the computer's operating system.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


More information on scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

Rootkit:W32/Kobchka is a Generic Detection that identifies files with rootkit-like characteristics or behavior.


Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.

Learn More