ET INFO Unix/Linux Processhider Source Being Downloaded

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/d/processhider.c"; bsize:17; fast_pattern;
http.user_agent;
content:"curl/"; startswith;
http.host;
content:"m.windowsupdatesupport.org"; bsize:26;
Raw source ET INFO Unix/Linux Processhider Source Being Downloaded · Suricata
Esc
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 INFO Unix/Linux Processhider Source Being Downloaded";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/d/processhider.c"; bsize:17; fast_pattern;
    http.user_agent;
    content:"curl/"; startswith;
    http.host;
    content:"m.windowsupdatesupport.org"; bsize:26;
    reference:md5,4ff3828a2ecc6314bfc7dc22ca194480;
    reference:url,twitter.com/JAMESWT_MHT/status/1402239031602302983;
    classtype:bad-unknown;
    sid:2033117; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2021_06_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_08;
)

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