Ransomware Research

About CSP


CSP was first discovered in February 2019 in enterprise cloud environments.

Name CSP
First Seen February 2019

Behavior of CSP

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

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

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Characteristics of CSP

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


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 CSP ransomware is known to change.

Suffixes_csp, .wav_list

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 CSP.

File Name/^HOW TO DECRYPT[w{5}].txt$/

External Pages

Ransomware often links to external pages such as payment pages, telegram contacts, etc. Below are some of the URLs Elastio has found to be associated with CSP.

External Pages
  • mailto:helptate@protonmail.com
  • mailto:addwe@protonmail.com
  • bitmessage:BM-2cXAZEBNLBtSpyxGyhYpqZw9922i8LVF9p
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