alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING Likely Hex Encoded Executable as String - Double Quote Separated"; flow:established,to_client; file.data; content:"4D|22|5A|22|"; nocase; content:"|22|50|22|45|22|00|22|00|22|"; distance:0; content:"|22|21|22|54|22|68|22|69|22|73|22|20|22|70|22|72|22|6f|22|67|22|72|22|61|22|6d|22|"; distance:0; nocase; fast_pattern; reference:url,threatmon.io/apt-sidecopy-targeting-indian-government-entities/; classtype:bad-unknown; sid:2044374; 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;)