CYFIRMA’s research team discovered Lyrix Ransomware while monitoring underground forums as part of our Threat Discovery Process. Developed in Python and compiled with PyInstaller — allowing it to run as a standalone executable with all dependencies—Lyrix targets Windows systems using strong encryption and appends a unique file extension to encrypted files. Its advanced evasion techniques and persistence mechanisms make it challenging to detect and remove. This discovery underscores the need for proactive cybersecurity measures and a robust incident response strategy to safeguard data and reduce the risk of breaches.

Target Technologies Windows Operating System
Written In Python
Encrypted file extension Original file names appended with ‘.02dq34jROu’ extension
Observed First 2025-04-20
Problem Statement
Lyrix Ransomware targets Windows operating systems using advanced evasion and anti-analysis techniques to reduce the likelihood of detection. Its tactics include obfuscating malicious behavior, bypassing rule-based detection systems, employing strong encryption, issuing ransom demands, and threatening to leak stolen data on underground forums.

Lyrix Ransomware
Basic Details
Filename Encryptor.exe
Size 20.43 MB
Signed Not signed
File Type Win32 EXE
Timestamp Sun Apr 20 09:04:34 2025 (UTC)
SHA 256 Hash fcfa43ecb55ba6a46d8351257a491025022f85e9ae9d5e93d945073f612c877b