Releasing rainbow tables to accelerate protocol deprecation
4 months ago
- #Net-NTLMv1
- #cybersecurity
- #credential-theft
- Mandiant releases Net-NTLMv1 rainbow tables to highlight protocol insecurity.
- Net-NTLMv1 is deprecated but still in use, making systems vulnerable to credential theft.
- The released dataset allows key recovery in under 12 hours with consumer hardware.
- Attackers can exploit Net-NTLMv1 to compromise Active Directory objects and escalate privileges.
- Steps to obtain and crack Net-NTLMv1 hashes using tools like Responder and rainbow tables.
- Organizations should disable Net-NTLMv1 and monitor for its usage to prevent attacks.
- Event logs can be filtered to detect Net-NTLMv1 authentication attempts.