Ransomware Research

Shifr RaaS Ransomware

Shifr RaaS is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Gojdue, ShurL0ckr.

Quick Facts

Ransomware Family
Shifr RaaS
First Seen
June 1, 2017
Known Aliases
GojdueShurL0ckr

How Shifr RaaS Ransomware Works

File Encryption Patterns

Shifr RaaS modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..shifr..cypher

Ransom Note and Payment Demands

After encrypting files, Shifr RaaS displays ransom notes demanding payment for file recovery:

fileHOW_TO_DECRYPT_FILES.html

Ransom message:

notes/HOW_TO_DECRYPT_FILES.html

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with Shifr RaaS ransomware:

  • renamed.exe
  • h2ydLMS3yQXZxwaomDeGG7qUdvEBGDfNIZK.exe
  • 3V4NK1Q3.exe
  • myfile.exe
  • 9F2G4EIX.exe
  • OTN3HCOO.exe
  • B1T4O4MR.exe
  • strikerKFwkV.data
  • 4NsXb5kUSTPhk2N6mY3EVtfilvAgCXQPYdF.exe
  • XMtUyvb39QDILnHbpL9lDDbpIJ72YLL4Ood.exe
  • samples_09_02_2018 (58)
  • strike8aE2l2.data
  • encryption_key

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About This Analysis

This Shifr RaaS ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like Shifr RaaS.

Last updated: October 30, 2025

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