ET INFO Anyplace Remote Access Checkin (051)

Query · suricata

flow:established,to_server;
content:"HTTP|2f|1.1|20|051"; depth:12;
content:"VER|3a 20|"; distance:0;
content:"OBJ|3a 20|"; distance:0;
content:"FUNC|3a 20|"; distance:0;
content:"NAME|3a 20|"; distance:0;
content:"ACC|3a 20|"; distance:0;
content:"SRV|3a 20|"; distance:0;
content:"PRODUCT|3a 20|"; distance:0; fast_pattern;
Raw source ET INFO Anyplace Remote Access Checkin (051) · 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 tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET INFO Anyplace Remote Access Checkin (051)";
    flow:established,to_server;
    content:"HTTP|2f|1.1|20|051"; depth:12;
    content:"VER|3a 20|"; distance:0;
    content:"OBJ|3a 20|"; distance:0;
    content:"FUNC|3a 20|"; distance:0;
    content:"NAME|3a 20|"; distance:0;
    content:"ACC|3a 20|"; distance:0;
    content:"SRV|3a 20|"; distance:0;
    content:"PRODUCT|3a 20|"; distance:0; fast_pattern;
    reference:md5,30e4f96590d530ba5dc1762f8b87c16b;
    classtype:misc-activity;
    sid:2027324; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_07, deployment Perimeter, deployment Internal, malware_family Anyplace, performance_impact Low, confidence High, signature_severity Informational, tag RAT, updated_at 2023_04_20;
)

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