ET EXPLOIT_KIT Suspicious GitHack TLS SNI Request - Possible PurpleFox EK

Query · suricata

flow:established,to_server;
tls.sni;
content:".githack.";
content:!".githack.com"; endswith;
Raw source ET EXPLOIT_KIT Suspicious GitHack TLS SNI Request - Possible PurpleFox EK · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT Suspicious GitHack TLS SNI Request - Possible PurpleFox EK";
    flow:established,to_server;
    tls.sni;
    content:".githack.";
    content:!".githack.com"; endswith;
    classtype:exploit-kit;
    sid:2032481; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_05, deployment Perimeter, malware_family PurpleFox, performance_impact Low, confidence Medium, signature_severity Major, tag Exploit_Kit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_03;
)

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