#alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT Possible Hex Obfuscation Usage On Webpage"; flow:established,to_client; content:"|5C|x"; nocase; content:"|5C|x"; nocase; distance:2; within:2; content:"|5C|x"; nocase; distance:2; within:2; content:"|5C|x"; nocase; distance:2; within:2; content:"|5C|x"; nocase; distance:2; within:2; pcre:"/\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}/i"; reference:url,www.sophos.com/security/technical-papers/malware_with_your_mocha.html; reference:url,cansecwest.com/slides07/csw07-nazario.pdf; classtype:bad-unknown; sid:2012119; rev:3;)

Added 2011-10-12 19:33:30 UTC


#alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT Possible Hex Obfuscation Usage On Webpage"; flow:established,to_client; content:"|5C|x"; nocase; content:"|5C|x"; nocase; distance:2; within:2; content:"|5C|x"; nocase; distance:2; within:2; content:"|5C|x"; nocase; distance:2; within:2; content:"|5C|x"; nocase; distance:2; within:2; pcre:"/\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}\x5Cx[a-f,0-9]{2}/i"; classtype:bad-unknown; reference:url,www.sophos.com/security/technical-papers/malware_with_your_mocha.html; reference:url,cansecwest.com/slides07/csw07-nazario.pdf; sid:2012119; rev:3;)

Added 2011-02-04 17:31:59 UTC


Topic revision: r1 - 2011-10-12 - TWikiGuest
 
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