Anatomy of a Nim Infostealer

Tracing exfiltration and self-deletion through static, dynamic and advanced static analysis Vasilis Mantas — Threat Detection Engineer Verdict: A 64-bit Windows infostealer written in Nim. It reads a target file from disk, encrypts the contents with RC4 using a key it collects at runtime, and exfiltrates the ciphertext in chunks over plain HTTP...