VECT: Ransomware That Can’t Decrypt

This report analyzes a Windows VECT 2.0 ransomware sample and demonstrates how design and implementation flaws — including cross-platform nonce-loss for large files, a 32 KB buffer-size mismatch for medium files (32 KB < size ≤ 128 KB), and use of process-global buffers leading to race conditions — can leave .vect-suffixed files renamed, partially encrypted, inconsistent, or damaged in ways the attacker's decryptor cannot reliably restore; the paper highlights recovery implications and positions Morphisec's prevention-first and adaptive recovery capabilities as mitigations.