ET MALWARE Successful Cobalt Strike Shellcode Download (x64) M1

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.response_body;
content:"|fc 48 83 e4 f0 eb 33 5d 8b 45 00 48 83 c5 04 8b|"; startswith; fast_pattern;
Raw source ET MALWARE Successful Cobalt Strike Shellcode Download (x64) M1 · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Successful Cobalt Strike Shellcode Download (x64) M1";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.response_body;
    content:"|fc 48 83 e4 f0 eb 33 5d 8b 45 00 48 83 c5 04 8b|"; startswith; fast_pattern;
    reference:md5,a133c9d87aa58e8cb1a6c0f413bf5dbd;
    reference:url,github.com/giMini/PowerMemory/blob/master/PowerProcess/Inject-ShellCodeInProcess.ps1;
    reference:url,cisa.gov/uscert/ncas/alerts/aa21-265a;
    classtype:trojan-activity;
    sid:2035442; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_11, deployment Perimeter, malware_family Cobalt_Strike, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_11, reviewed_at 2023_10_16;
)

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