alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Obsidium Stealer Data Exfiltration Attempt M1"; flow:established,to_server; content:"Grabbers|5c|data.zip"; fast_pattern; depth:17; reference:md5,fbde689446a216b919faf588f3b01801; classtype:trojan-activity; sid:2043666; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2023_01_24, deployment Perimeter, malware_family Win32_Obsidium, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_24;)