alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE PennyWise Stealer Data Exfil M2"; flow:established,to_server; http.request_line; content:"POST|20|/uploadfile|20|"; http.request_body; content:"|2a|PennyWise|20|v1|2e|"; fast_pattern; content:"Worker|3a 20|"; content:"IP|3a 20|"; content:"Username|3a 20|"; content:"PC|3a 20|"; content:"System|3a 20|"; reference:url,twitter.com/crep1x/status/1638596449226170370; classtype:trojan-activity; sid:2044748; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_22, deployment Perimeter, malware_family PennyWise, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_28, reviewed_at 2024_02_07; target:src_ip;)