ET MALWARE PeepingTitle Backdoor Related Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/\.(?:(cdr|zip|ppt|msf|jpeg|sql))$/";
http.user_agent;
content:"calc"; bsize:4; fast_pattern;
http.header_names;
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; bsize:22;
target:src_ip;
Raw source ET MALWARE PeepingTitle Backdoor Related Activity · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE PeepingTitle Backdoor Related Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/\.(?:(cdr|zip|ppt|msf|jpeg|sql))$/";
    http.user_agent;
    content:"calc"; bsize:4; fast_pattern;
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; bsize:22;
    reference:url,www.sentinelone.com/labs/operation-magalenha-long-running-campaign-pursues-portuguese-credentials-and-pii/;
    reference:md5,5ffe427533794819a0a949a7eb168201;
    classtype:trojan-activity;
    sid:2048312; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_09_27, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_09_27, reviewed_at 2023_09_27;
    target:src_ip;
)

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