alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Suspicious IAT Checking for Debugger"; flow:established,to_client; content:"MZ"; isdataat:76,relative; content:"This program cannot be run in DOS mode."; distance:0; content:"DebuggerPresent"; nocase; distance:0; pcre:"/(Is|CheckRemote)DebuggerPresent/i"; reference:url,sans.org/reading_room/whitepapers/malicious/rss/_33649; classtype:bad-unknown; sid:2012763; rev:10; metadata:created_at 2011_05_03, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_23;)