ET MALWARE Possible W4SP Stealer CnC Checkin

Query · suricata

flow:established,to_server;
content:"|7b 22|hostname|22 3a 22|"; startswith;
content:"|22 2c 22|macAddress|22 3a 22|"; distance:0; fast_pattern;
pcre:"/^([a-f0-9]{2}\:){5}[a-f0-9]{2}/R";
content:"|22 2c 22|username|22 3a 22|"; distance:0;
target:src_ip;
Raw source ET MALWARE Possible W4SP Stealer CnC Checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Possible W4SP Stealer CnC Checkin";
    flow:established,to_server;
    content:"|7b 22|hostname|22 3a 22|"; startswith;
    content:"|22 2c 22|macAddress|22 3a 22|"; distance:0; fast_pattern;
    pcre:"/^([a-f0-9]{2}\:){5}[a-f0-9]{2}/R";
    content:"|22 2c 22|username|22 3a 22|"; distance:0;
    reference:url,www.welivesecurity.com/en/eset-research/pernicious-potpourri-python-packages-pypi;
    reference:md5,686f6d2fb8dd540052f2c698e8aff662;
    classtype:trojan-activity;
    sid:2049793; rev:1;
    metadata:affected_product Linux, attack_target Linux_Unix, created_at 2023_12_19, deployment Perimeter, malware_family W4SP_Stealer, performance_impact Low, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_19;
    target:src_ip;
)

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