ET MALWARE Parallax CnC Response Activity M16

Query · suricata

flow:established,to_client;
content:"|a0 cd 78 e6|"; startswith; fast_pattern;
content:"|ff fc 36|"; distance:1; within:3;
flowbits:isset,ET.Parallax-16;

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 M16 · 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 M16";
    flow:established,to_client;
    content:"|a0 cd 78 e6|"; startswith; fast_pattern;
    content:"|ff fc 36|"; distance:1; within:3;
    flowbits:isset,ET.Parallax-16;
    reference:md5,36439a5f029df1777b51a34bd454b9d2;
    classtype:command-and-control;
    sid:2034433; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_11, deployment Perimeter, malware_family Parallax, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_11;
)

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