ET ADWARE_PUP Win32/Adware.YoutubeDownloaderGuru.A Variant CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/php/update.php?m="; startswith; fast_pattern;
content:"&s="; within:8;
isdataat:!6,relative;
http.user_agent; bsize:24;
content:"Youtube Music Downloader";
http.header_names; bsize:37;
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|";
Raw source ET ADWARE_PUP Win32/Adware.YoutubeDownloaderGuru.A Variant CnC 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 ADWARE_PUP Win32/Adware.YoutubeDownloaderGuru.A Variant CnC Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/php/update.php?m="; startswith; fast_pattern;
    content:"&s="; within:8;
    isdataat:!6,relative;
    http.user_agent; bsize:24;
    content:"Youtube Music Downloader";
    http.header_names; bsize:37;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|";
    reference:md5,638aad567ad2f0fc1a3e223eea6fa9a4;
    classtype:pup-activity;
    sid:2029545; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_27, deployment Perimeter, confidence High, signature_severity Minor, updated_at 2020_02_27;
)

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