ET MALWARE PSEmpire Checkin via POST

Query · suricata

flow:to_server,established;
urilen:14;
http.method;
content:"POST";
http.uri;
content:"/admin/get.php"; fast_pattern;
http.user_agent;
content:"Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64|3b 20|Trident/7.0|3b 20|rv|3a|11.0) like Gecko";
http.cookie;
pcre:"/^SESSIONID=[A-Z0-9]{16}/";
http.header_names;
content:!"Referer|0d 0a|";
content:!"Accept";
Raw source ET MALWARE PSEmpire Checkin via POST · 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 MALWARE PSEmpire Checkin via POST";
    flow:to_server,established;
    urilen:14;
    http.method;
    content:"POST";
    http.uri;
    content:"/admin/get.php"; fast_pattern;
    http.user_agent;
    content:"Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64|3b 20|Trident/7.0|3b 20|rv|3a|11.0) like Gecko";
    http.cookie;
    pcre:"/^SESSIONID=[A-Z0-9]{16}/";
    http.header_names;
    content:!"Referer|0d 0a|";
    content:!"Accept";
    reference:url,www.powershellempire.com;
    classtype:command-and-control;
    sid:2021616; rev:5;
    metadata:created_at 2015_08_12, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_05;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.