Ransomware Research
CryptoApp Ransomware
CryptoApp is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2015, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CryptoApp
- First Seen
- August 1, 2015
How CryptoApp Ransomware Works
Targeted Files
https://blog.0x3a.com/post/126900680679/analysis-of-a-piece-of-ransomware-in-development
File Encryption Patterns
CryptoApp modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encryptedRansom Note and Payment Demands
After encrypting files, CryptoApp displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
LoginRansom message:
notes/wlp.png
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with CryptoApp ransomware:
transaction_certif_2412_installer.exeWesternUnionCertificateXP.execsrsssexecsrsss.exeweddingclip_csrsss.exeyfV4H.vcfcsrss.exe.0x3ascrsss.exeCryptoApp.exeVERSJ5.7zdecrypter.exe.0x3a
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About This Analysis
This CryptoApp 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 CryptoApp.
Last updated: July 30, 2025