Vidar information stealer has introduced a lightweight custom virtual machine and per-build stream-cipher variations to conceal its embedded strings, raising the cost of static detection and automated reverse engineering. First observed in 2018, Vidar remains a widely tracked credential-stealing malware family. Its operators continually alter internal protections without necessarily changing the malware’s broader operational purpose: […]

The post Vidar Uses Custom Bytecode Interpreter and ARX Stream Ciphers for Per-Build String Obfuscation appeared first on GBHackers Security | #1 Globally Trusted Cyber Security News Platform.

Mayura Kathir

Source: gbHackers
Source Link: https://gbhackers.com/custom-bytecode-execution/