Published Oct 16, 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.

This ransomware is installed by the Magnitude exploit kit, which used to deliver another prominent ransomware family, Cerber.

When run, this threat checks the machine's default system language. If the system language is Korean, it launches its malicious routines. Otherwise, self-deletes after three seconds.

It encrypts files using AES 128-bit and appends the file name extension .ihsdj to encrypted files.

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.