Rule History

SID: 2044377 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Feb 28, 2023, 12:00 PM

Message:

ET HUNTING Likely Hex Encoded Executable as String - Backtick Separated

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING Likely Hex Encoded Executable as String - Backtick Separated"; flow:established,to_client; file.data; content:"4D|60|5A|60|"; nocase; content:"|60|50|60|45|60|00|60|00|60|"; distance:0; content:"|60|21|60|54|60|68|60|69|60|73|60|20|60|70|60|72|60|6f|60|67|60|72|60|61|60|6d|60|"; distance:0; nocase; fast_pattern; reference:url,threatmon.io/apt-sidecopy-targeting-indian-government-entities/; classtype:bad-unknown; sid:2044377; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_28, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information; target:dest_ip;)

Created:

Feb 28, 2023, 12:00 PM

Updated:

Feb 28, 2023, 12:00 PM

DB Created:

Feb 28, 2023, 11:00 PM

DB Updated:

Aug 25, 2025, 9:35 PM

Filename:

rules/emerging-hunting.rules