Rule History

SID: 2006417 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 8 • Jul 30, 2010, 12:00 PM

Message:

ET ATTACK_RESPONSE Weak Netbios Lanman Auth Challenge Detected

Rule:

alert tcp $HOME_NET 139 -> $EXTERNAL_NET any (msg:"ET ATTACK_RESPONSE Weak Netbios Lanman Auth Challenge Detected"; flow:from_server; content:"|ff 53 4d 42|"; content:"|00 11 22 33 44 55 66 77 88|"; classtype:policy-violation; sid:2006417; rev:8; metadata:created_at 2010_07_30, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Jul 30, 2010, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Jan 26, 2026, 10:34 PM

Filename:

rules/emerging-attack_response.rules