Standalone AES-256-CBC File Encryption Utility Using enc/dec and key.txt Keyfile

Duo Tech@duotech

•updated Jul 21, 2026•0•0•0

Detects the execution of a potential file encryption utility that uses command-line flags ('enc'/'dec', '-k'/'-i'/'--keyfile') in conjunction with a 'key.txt' file. This pattern is characteristic of custom encryption tools used by threat actors to encrypt files on a system.