Ransomware Research

About CTF


CTF was first discovered in April 2017 in enterprise cloud environments.

Name CTF
First Seen April 2017

Behavior of CTF

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

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

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Characteristics of CTF

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


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 CTF 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 CTF.



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

ExecutablesCTF.exe, Gov_Str.docx .exe, wp-admin
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