ET HUNTING Likely Hex Encoded Executable as String - Comma Separated

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET HUNTING Likely Hex Encoded Executable as String - Comma Separated";
    flow:established,to_client;
    file.data;
    content:"4D|2c|5A|2c|"; nocase;
    content:"|2c|50|2c|45|2c|00|2c|00|2c|"; distance:0;
    content:"|2c|21|2c|54|2c|68|2c|69|2c|73|2c|20|2c|70|2c|72|2c|6f|2c|67|2c|72|2c|61|2c|6d|2c|"; distance:0; nocase; fast_pattern;
    reference:url,threatmon.io/apt-sidecopy-targeting-indian-government-entities/;
    classtype:bad-unknown;
    sid:2044378; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, 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;
)