Ransomware Research
Shrug Ransomware
Shrug is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Shrug, Shrug-2.
Quick Facts
- Ransomware Family
- Shrug
- First Seen
- June 1, 2018
- Known Aliases
- ShrugShrug-2
How Shrug Ransomware Works
Targeted Files
https://app.any.run/tasks/7e5f97ef-16c7-4b5d-9814-6acb44551cd5/
File Encryption Patterns
Shrug modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..SHRUG..SHRUG2Ransom Note and Payment Demands
After encrypting files, Shrug displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletionTechnical Indicators
Associated Executable Files
The following executable files are associated with Shrug ransomware:
Shrug.exemyfile.exeshrug.exeShrugTwo.execodexgigas_6c2194f9067756ca039d57113e3b93a7a34659d4a.exe
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About This Analysis
This Shrug 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 Shrug.
Last updated: July 30, 2025