ET WEB_CLIENT SUSPICIOUS Microsoft-Edge protocol in use (Observed in Magnitude EK)

Query · suricata

flow:established,to_client;
file_data;
content:"microsoft-edge|3a|http"; nocase; fast_pattern;
byte_test:1,>,0x21,-20,relative;
byte_test:1,<,0x28,-20,relative;
byte_test:1,!=,0x23,-20,relative;
byte_test:1,!=,0x24,-20,relative;
byte_test:1,!=,0x25,-20,relative;
byte_test:1,!=,0x26,-20,relative;
content:"location"; nocase;
content:"iframe"; nocase;
content:"contentWindow"; nocase;
Raw source ET WEB_CLIENT SUSPICIOUS Microsoft-Edge protocol in use (Observed in Magnitude EK) · 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 WEB_CLIENT SUSPICIOUS Microsoft-Edge protocol in use (Observed in Magnitude EK)";
    flow:established,to_client;
    file_data;
    content:"microsoft-edge|3a|http"; nocase; fast_pattern;
    byte_test:1,>,0x21,-20,relative;
    byte_test:1,<,0x28,-20,relative;
    byte_test:1,!=,0x23,-20,relative;
    byte_test:1,!=,0x24,-20,relative;
    byte_test:1,!=,0x25,-20,relative;
    byte_test:1,!=,0x26,-20,relative;
    content:"location"; nocase;
    content:"iframe"; nocase;
    content:"contentWindow"; nocase;
    reference:url,www.brokenbrowser.com/abusing-of-protocols/;
    classtype:exploit-kit;
    sid:2024030; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2017_03_06, malware_family BrokenBrowser, signature_severity Major, updated_at 2019_07_26;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.