Published Mar 06, 2014|Updated Sep 15, 2017


Severe |Detected with Windows Defender Antivirus

Aliases: JS/Crypted.EY! (Command) Mal/ExpJS-S (Sophos) Fiesta exploit kit (other)


Windows Defender detects and removes this threat.

This threat can infect your PC if it is running vulnerable software, including:

  • Adobe Flash Player version 10 update 3 and earlier, and version 11 update 5 and earlier.
  • Silverlight version 5 and earlier.

If your PC has vulnerable software this threat can download other malware, including Win32/Miuref.

You might get an alert about this threat even if you're not using a vulnerable software. This is because we detect when a website tries to use the vulnerability, even if it isn't successful.

Find out ways that malware can get on your PC.  


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