Published May 24, 2017|Updated Jan 10, 2018


Severe |Detected with Windows Defender Antivirus

Aliases: No associated aliases


Windows Defender Antivirus detects and removes this threat. 

This ransomware can stop you from using your PC or accessing your data. It might ask you to pay money (in the form of Bitcoins) to a malicious hacker.

Your PC can get infected with this ransomware from malicious attachments in spammed email messages. The email messages carry a .pdf file attachment embedded with a document containing malicious macro codes. When the attachment is opened, the malicious macro downloads this ransomware from multiple server locations.

This ransomware encrypts files on your computer. It appends any of the following file name extensions to encrypted files: .jaff, .wlu, or .sVn.

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.

Read our latest report: A worthy upgrade: Next-gen security on Windows 10 proves resilient against ransomware outbreaks in 2017.


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