Ransomware Research
OPdailyallowance Ransomware
OPdailyallowance is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: OPdailyallowance, Jester.
Quick Facts
- Ransomware Family
- OPdailyallowance
- First Seen
- August 1, 2018
- Known Aliases
- OPdailyallowanceJester
How OPdailyallowance Ransomware Works
File Encryption Patterns
OPdailyallowance modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CRYPTRRansom Note and Payment Demands
After encrypting files, OPdailyallowance displays ransom notes demanding payment for file recovery:
Cryptowall.htmRansom message:
notes/Cryptowall.htm
Note locations:
Desktopjester.htmlRansom message:
notes/jester.html
Note locations:
DesktopINTRUCTION.htmlRansom message:
notes/INTRUCTION.html
Note locations:
DesktopATTANTION!!!.txtRansom message:
notes/ATTANTION!!!.txt
Note locations:
DesktopPAYMENT !!!.txtRansom message:
notes/PAYMENT !!!.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with OPdailyallowance ransomware:
Documents.exeout.exeFSocietyCryptoWall(noencrypt).ransom.exejester.exe
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About This Analysis
This OPdailyallowance 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 OPdailyallowance.
Last updated: July 30, 2025