ET MALWARE Kimsuky KGH Backdoor CnC Activity M2

Query · suricata

flow:established,to_server;
http.uri;
content:".php?wShell="; fast_pattern;
pcre:"/^\d+$/R";
http.user_agent;
content:"|3b 20 2e|NET CLR 3.5.30729|3b 20|InfoPath.2)"; endswith;
Raw source ET MALWARE Kimsuky KGH Backdoor CnC Activity M2 · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Kimsuky KGH Backdoor CnC Activity M2";
    flow:established,to_server;
    http.uri;
    content:".php?wShell="; fast_pattern;
    pcre:"/^\d+$/R";
    http.user_agent;
    content:"|3b 20 2e|NET CLR 3.5.30729|3b 20|InfoPath.2)"; endswith;
    reference:url,www.cybereason.com/blog/back-to-the-future-inside-the-kimsuky-kgh-spyware-suite;
    classtype:targeted-activity;
    sid:2031179; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_04, deployment Perimeter, malware_family KGH_Malware_Suite, confidence High, signature_severity Major, tag Kimsuky, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_04;
)

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.