alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE LNK/Sherlock Stealer Host Process List Exfil (POST)"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"WinHttp.WinHttpRequest."; http.content_len; content:"0"; bsize:1; http.header; content:"|20|System|20|Idle|20|ProcessSystemsmss|2e|execsrss|2e|exe"; fast_pattern; reference:url,twitter.com/naumovax/status/1709967135139672194; reference:md5,cf04717ce48e75793d8548d7fbeaba30; classtype:trojan-activity; sid:2048462; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_10_05, deployment Perimeter, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_05, reviewed_at 2023_10_05;)