ET MALWARE Parallax CnC Response Activity M9

Query · suricata

flow:established,to_client;
content:"|a5 20 94 f5|"; depth:4; fast_pattern;
content:"|6d 54 21|"; distance:1; within:3;
flowbits:isset,ET.Parallax-9;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE Parallax CnC Response Activity M9 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Parallax CnC Response Activity M9";
    flow:established,to_client;
    content:"|a5 20 94 f5|"; depth:4; fast_pattern;
    content:"|6d 54 21|"; distance:1; within:3;
    flowbits:isset,ET.Parallax-9;
    reference:md5,1b3f8c92d5d1ace34fa4dc2dd80c3eb7;
    classtype:command-and-control;
    sid:2030039; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_25, deployment Perimeter, malware_family Parallax, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_25;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.