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:3; metadata:attack_target Client_Endpoint, created_at 2017_03_06, malware_family BrokenBrowser, signature_severity Major, updated_at 2024_03_14;)