ET MALWARE Powershell/PowHeartBeat CnC Checkin - ICMP

Query · suricata

dsize:32;
itype:8;
content:"|3b 1d 41 1d|"; startswith; fast_pattern;
content:"abcdefghijklmnopqrstuvwxyz"; distance:2;
Raw source ET MALWARE Powershell/PowHeartBeat CnC Checkin - ICMP · 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 icmp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Powershell/PowHeartBeat CnC Checkin - ICMP";
    dsize:32;
    itype:8;
    content:"|3b 1d 41 1d|"; startswith; fast_pattern;
    content:"abcdefghijklmnopqrstuvwxyz"; distance:2;
    reference:url,www.welivesecurity.com/2022/09/06/worok-big-picture/;
    classtype:trojan-activity;
    sid:2038821; rev:1;
    metadata:attack_target Client_and_Server, created_at 2022_09_13, deployment Perimeter, malware_family PowerShell_PowHeartBeat, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_13;
)

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