alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE SluttyPutty isDebuggerPresent in Fake Putty Executable"; flow:established,to_client; file.data; content:"|4d 5a|"; startswith; content:"https://www.chiark.greenend.org.uk/~sgtatham/putty/"; fast_pattern; content:"IsDebuggerPresent"; reference:md5,b0dd930c652d1b9350b7c8a29e798cd5; classtype:trojan-activity; sid:2030382; rev:3; metadata:attack_target Client_Endpoint, created_at 2020_06_23, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_14;)