ET DELETED SHELLCODE Shikata Ga Nai polymorphic payload
Sourceet/open
CreatedJuly 30, 2010
UpdatedJuly 26, 2019
Classificationshellcode-detect
alert ip $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED SHELLCODE Shikata Ga Nai polymorphic payload"; dsize:>26; content:"|d9 74 24 f4|"; pcre:"/[\x29\x2b\x31\x33]\xc9/sm"; pcre:"/[\xd9-\xdb\xdd].{1,11}\xd9\x74\x24\xf4.{0,10}[\x58\x5a\x5b\x5d-\x5f]/sm"; pcre:"/([\x29\x2b\x31\x33\xb8\xba\xbb\xbe\xbf\xd9-\xdb\xdd][^\x00\xff][^\x00\xff][^\x00][^\x00\xff][^\x00][^\x00\xff][^\x00\xff][^\x00][^\x00][^\x00][^\x00\xff][^\x00\xff][^\x00\xff][^\x00][^\x00][\x31\x83][\x42\x43\x46\x47\x50\x53\x56-\x58\x5a\x5e\x5f\x70\x72\x73\x77\x78\x7a\x7b\x7e\xc0\xc2\xc3\xc6\xc7\xe8\xea\xeb\xee\xef][\x04\x0e\x10\x12\x13\x15\x17\xfc][\x03\x31\x83][\x42\x43\x46\x47\x50\x53\x56-\x58\x5a\x5e\x5f\x70\x72\x73\x77\x78\x7a\x7b\x7e\xc0\xc2\xc3\xc6\xc7\xe8\xea\xeb\xee\xef][\x04\x0a\x0c\x0e-\x13\x15\x17\xfc][\x03\x83]..[^\x1d\xe2][^\x0a\xf5])|([\x29\x2b\x31\x33\xb8\xba\xbb\xbd-\xbf\xd9-\xdb\xdd][^\x00][^\x00][^\x00][^\x00][^\x00][^\x00][^\x00][^\x00][\x24\xb1\xd9-\xdb\xdd][^\x00][\x58\x5a\x5b\x5d-\x5f\xb8\xba\xbb\xbd-\xbf\xd9][^\x00][^\x00][^\x00][^\x00][\x31\x83][\x42\x43\x45-\x47\x50\x53\x55-\x58\x5a\x5d-\x5f\x68\x6a\x6b\x6e-\x70\x72\x73\x75\x77\x78\x7a\x7b\x7d\x7e\xc0\xc2\xc3\xc5-\xc7\xe8\xea\xeb\xed-\xef][\x04\x0e\x12\x17\xfc][\x03\x31\x83][\x42\x43\x45-\x47\x50\x53\x55-\x58\x5a\x5d-\x5f\x68\x6a\x6b\x6e-\x70\x72\x73\x75\x77\x78\x7a\x7b\x7d\x7e\xc0\xc2\xc3\xc5-\xc7\xe8\xea\xeb\xed-\xef][\x04\x0a\x0e\x12\x13\x17\xfc][\x03\x83]..[^\xe2][^\xf5])/sm"; reference:url,toorcon.org/2006/conference.html?id=29; classtype:shellcode-detect; sid:2003118; rev:4; metadata:created_at 2010_07_30, signature_severity Unknown, updated_at 2019_07_26;)
References
Metadata
created at2010_07_30
signature severityUnknown
updated at2019_07_26
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