alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ACTIVEX Tom Sawyer Software Possible Memory Corruption Attempt"; flow:established,to_client; file.data; content:"<OBJECT "; nocase; content:"classid"; nocase; distance:0; content:"CLSID"; nocase; distance:0; content:"658ED6E7-0DA1-4ADD-B2FB-095F08091118"; fast_pattern; nocase; distance:0; pcre:"/<OBJECT\s+[^>]*classid\s*=\s*[\x22\x27]?\s*clsid\s*\x3a\s*\x7B?\s*658ED6E7-0DA1-4ADD-B2FB-095F08091118/si"; classtype:web-application-attack; sid:2013565; rev:4; metadata:created_at 2011_09_12, confidence Low, signature_severity Unknown, updated_at 2024_04_09;)