ET RETIRED ISMAgent Receiving Commands from CnC Server

Query · suricata

flow:from_server,established;
content:"|23|command|23 23|systeminfo"; offset:36; fast_pattern;
content:"&&"; distance:0;
Raw source ET RETIRED ISMAgent Receiving Commands from CnC Server · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET RETIRED ISMAgent Receiving Commands from CnC Server";
    flow:from_server,established;
    content:"|23|command|23 23|systeminfo"; offset:36; fast_pattern;
    content:"&&"; distance:0;
    reference:md5,a70a08a1e17b820c7dc8ee1247d6bfa2;
    reference:url,researchcenter.paloaltonetworks.com/2017/07/unit42-oilrig-uses-ismdoor-variant-possibly-linked-greenbug-threat-group/;
    classtype:command-and-control;
    sid:2024503; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_07_28, deployment Perimeter, former_category MALWARE, malware_family Ismdoor, performance_impact Moderate, signature_severity Major, updated_at 2024_09_16, reviewed_at 2024_09_16;
)

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