ET MALWARE LNK/Sherlock Stealer Host Process List Exfil (POST)

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.user_agent;
content:"WinHttp.WinHttpRequest.";
http.content_len;
content:"0"; bsize:1;
http.header;
content:"|20|System|20|Idle|20|ProcessSystemsmss|2e|execsrss|2e|exe"; fast_pattern;
Raw source ET MALWARE LNK/Sherlock Stealer Host Process List Exfil (POST) · 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 $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE LNK/Sherlock Stealer Host Process List Exfil (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.user_agent;
    content:"WinHttp.WinHttpRequest.";
    http.content_len;
    content:"0"; bsize:1;
    http.header;
    content:"|20|System|20|Idle|20|ProcessSystemsmss|2e|execsrss|2e|exe"; fast_pattern;
    reference:url,twitter.com/naumovax/status/1709967135139672194;
    reference:md5,cf04717ce48e75793d8548d7fbeaba30;
    classtype:trojan-activity;
    sid:2048462; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_10_05, deployment Perimeter, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_05, reviewed_at 2023_10_05;
)

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