ET MALWARE Andariel Backdoor Activity (Checkin)

Query · suricata

flow:established,to_server;
content:"HTTP|20|1.1|20|/index.php?member="; startswith; fast_pattern;
content:"|20|SSL3.3"; distance:0;
Raw source ET MALWARE Andariel Backdoor Activity (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 $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Andariel Backdoor Activity (Checkin)";
    flow:established,to_server;
    content:"HTTP|20|1.1|20|/index.php?member="; startswith; fast_pattern;
    content:"|20|SSL3.3"; distance:0;
    reference:url,twitter.com/360CoreSec/status/1405790277034418177;
    reference:md5,c827d95429b644e918d53b24719dbe6e;
    classtype:command-and-control;
    sid:2033207; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_06_30, deployment Perimeter, malware_family Lazarus, malware_family Andariel, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_30;
)

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