Aliases: Win32/Injector.ZPB (ESET) BackDoor.Andromeda.22 (Dr.Web) Mal/EncPk-AFN (Sophos) PWS-Zbot.gen.anm (McAfee) TROJ_LOCKSCRN.SM (Trend Micro) Crypt.BBQL (AVG) Trojan.Win32.Buzus (Ikarus) Trojan.Win32.Buzus.mssp (Kaspersky) Trojan.Win32.Inject.ewxm (Kaspersky) Trojan/Win32.Zbot (AhnLab) W32/Injector.HB (Command) W32/Urausy.B (Norman)
Windows Defender detects and removes this threat.
This threat locks your PC and displays a full-screen message, commonly called a "lock screen". If this threat asks you to pay a fee or fine, do not pay it. The message is a fraud.
It pretends to be from the FBI or a national police force and tries to scare you into paying a fine to unlock your PC.
Typically, this threat gets on your PC when you visit a hacked webpage.
There is no one-size-fits-all response if you have been victimized by ransomware. There is no guarantee that paying the ransom will give you access to your files.
If you've already paid, see our ransomware page for help on what to do now.
Run antivirus or antimalware software
Use the following free Microsoft software to detect and remove this threat:
- Windows Defender Antivirus for Windows 10 and Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista
- Microsoft Safety Scanner
You should also run a full scan. A full scan might find other, hidden malware.
Get more help
If you’re using Windows XP, see our Windows XP end of support page.