Rule History

SID: 2017207 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 3 • Jul 27, 2013, 12:00 PM

Message:

ET ATTACK_RESPONSE Obfuscated Eval String 2

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ATTACK_RESPONSE Obfuscated Eval String 2"; flow:established,from_server; file_data; content:"|22|ev|22|+|22|al|22|"; classtype:bad-unknown; sid:2017207; rev:3; metadata:created_at 2013_07_27, deployment alert_only, confidence Low, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_19, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)

Created:

Jul 27, 2013, 12:00 PM

Updated:

Apr 19, 2023, 12:00 PM

DB Created:

Jul 27, 2013, 12:00 PM

DB Updated:

Oct 20, 2025, 3:34 PM

Filename:

rules/emerging-attack_response.rules