Versions (3)
Version DetailsCurrent
Rev: 1 • Feb 28, 2023, 12:00 PMET HUNTING Likely Hex Encoded Executable as String - Octothorp Separated
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING Likely Hex Encoded Executable as String - Octothorp Separated"; flow:established,to_client; file.data; content:"4D|23|5A|23|"; nocase; content:"|23|50|23|45|23|00|23|00|23|"; distance:0; content:"|23|21|23|54|23|68|23|69|23|73|23|20|23|70|23|72|23|6f|23|67|23|72|23|61|23|6d|23|"; distance:0; nocase; fast_pattern; reference:url,threatmon.io/apt-sidecopy-targeting-indian-government-entities/; classtype:bad-unknown; sid:2044372; 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;)
Feb 28, 2023, 12:00 PM
Feb 28, 2023, 12:00 PM
Feb 28, 2023, 11:00 PM
Aug 25, 2025, 9:35 PM
rules/emerging-hunting.rules