Aliases: Trojan.Winlock.2741 (Dr.Web) PWS-Spyeye.e (McAfee) Mal/Zbot-AV (Sophos) Cryp_Zbot-17 (Trend Micro)
Windows Defender Antivirus detects and removes this threat.
Ransom:Win32/LockScreen.AO is a ransomware that locks you out of your desktop. It asks you to pay a ransom fee so that you can regain use of your desktop.
Our ransomware FAQ page has more information on this type of threat.
The trend towards increasingly sophisticated malware behavior, highlighted by the use of exploits and other attack vectors, makes older platforms so much more susceptible to ransomware attacks. From June to November 2017, Windows 7 devices were 3.4 times more likely to encounter ransomware compared to Windows 10 devices.
Microsoft doesn’t recommend you pay the fine. 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
The following free Microsoft software detects and removes this threat:
- Windows Defender for Windows 10 and Windows 8.1, or Microsoft Security Essentials for Windows 7 and Windows Vista
- Microsoft Safety Scanner
Even if we've already detected and removed this particular threat, running a full scan might find other malware that is hiding on your PC.
You can also ask for help from other PC users at the Microsoft virus and malware community.
If you’re using Windows XP, see our Windows XP end of support page.