Ransomware Research

About BlackSheep


BlackSheep was first discovered in May 2017 in enterprise cloud environments.

Name BlackSheep
First Seen May 2017


To better understand BlackSheep, we can trace it’s origins. Below is a snapshot of BlackSheep’s genealogy.

FTSCoder » BlackSheep

Behavior of BlackSheep

BlackSheep is known to target specific file types. Below are all known file types that BlackSheep is known to infect.

In some cases, ransomware will update the modified date, when it encrypts files. BlackSheep updates the last modified date of the file it targets.

Learn More

Characteristics of BlackSheep

Here are some of the unique characteristics that are helpful to know about BlackSheep.


Some ransomware will change or append a suffix to the end of the file after they are encrypted, including changing the extension of a file. Here are some of the possible suffixes that BlackSheep ransomware is known to change.


Ransomware Notes

Not all ransomware leaves a note. However, some ransomware leaves the infected party instructions on what the user should do to get rid of the ransomware, or satisfy the ransom. This often involves transferring money, often bitcoin or another cryptocurrency to a designated wallet.

Below are the type(s) of notes, content, and typical locations where Elastio has found ransom notes from BlackSheep.



These are the names of the executables that contain the undetonated ransomware payload for BlackSheep.

How Elastio can help

Don’t let ransomware
take over your backups.

Elastio’s Cyber Recovery as a Service (CRaaS) software helps you detect, recover, and protect from ransomware attacks. The Elastio platform combines data security, protection and active ransomware recovery technology, offering you the most complete solution available. Gain full workload visibility, automated recovery testing, lower cloud costs and simplicity with Elastio’s cyber recovery solution.

Scroll to Top