alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING Likely Hex Encoded Executable as String - Single Quote Separated"; flow:established,to_client; file.data; content:"4D|27|5A|27|"; nocase; content:"|27|50|27|45|27|00|27|00|27|"; distance:0; content:"|27|21|27|54|27|68|27|69|27|73|27|20|27|70|27|72|27|6f|27|67|27|72|27|61|27|6d|27|"; distance:0; nocase; fast_pattern; reference:url,threatmon.io/apt-sidecopy-targeting-indian-government-entities/; classtype:bad-unknown; sid:2044375; 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;)