alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Possible Embedded NTLM Hash Theft Code"; flow:established,to_client; file_data; content:"src="; nocase; content:"file|3a 2f 2f 2f 5c 5c|"; distance:0; nocase; fast_pattern; within:10; content:"|5f|C$|5f|"; nocase; distance:0; within:50; content:"visibility|3a|"; nocase; distance:0; within:50; content:"hidden"; distance:0; within:8; content:"src="; pcre:"/^\s*[\x22\x27]\s*file\x3a\x2f\x2f\x2f\x5c\x5c[^\x20]+\x5cC\$\x5c\s*[\x22\x27]/Rsi"; metadata: former_category WEB_CLIENT; reference:url,; classtype:attempted-user; sid:2029329; rev:2; metadata:attack_target Client_Endpoint, deployment Perimeter, signature_severity Minor, created_at 2020_01_29, updated_at 2020_01_29;)

Added 2020-01-29 19:28:18 UTC

Topic revision: r1 - 2020-01-30 - TWikiGuest
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