ET MALWARE x64/Generic Red Team Activity CnC Response

Query · suricata

flow:established,to_client;
http.header_names;
content:"|0d 0a|x-azure-ref|0d 0a|";
content:"|0d 0a|X-Cache|0d 0a|";
http.header;
content:"|0d 0a|x-azure-ref|3a 20|20";
content:"er16cffdc5bnnsvlmnzkhcyecs00000002a000000002"; distance:0; fast_pattern;
content:"|0d 0a|X-Cache|3a 20|CONFIG_NOCACHE|0d 0a|";
Raw source ET MALWARE x64/Generic Red Team Activity CnC Response · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE x64/Generic Red Team Activity CnC Response";
    flow:established,to_client;
    http.header_names;
    content:"|0d 0a|x-azure-ref|0d 0a|";
    content:"|0d 0a|X-Cache|0d 0a|";
    http.header;
    content:"|0d 0a|x-azure-ref|3a 20|20";
    content:"er16cffdc5bnnsvlmnzkhcyecs00000002a000000002"; distance:0; fast_pattern;
    content:"|0d 0a|X-Cache|3a 20|CONFIG_NOCACHE|0d 0a|";
    reference:md5,62bbc3b087c803260c0c63595cf872ee;
    classtype:trojan-activity;
    sid:2052811; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_05_21, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag c2, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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