Aliases: TR/Ransom.Ag.qd.1 (Avira) Trojan.Winlock.3314 (Dr.Web) TROJ_ZKRYPT.SMIH (Trend Micro)
Microsoft security software detects and removes this threat.
This trojan stops you from using your PC by showing an alert message screen. This screen can include adult content and might ask you to pay a "fine" or fee to unlock your PC.
This threat also replaces important Windows system files with copies of itself.
Due to the damage this threat can do to your PC, you might need to reinstall some files from a Windows installation disc, or a backup source.
Windows 10 protects you from ransomware. Read more:
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.
The following free Microsoft software detects and removes this threat:
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.