Versions (4)
Version DetailsCurrent
Rev: 1 • Apr 27, 2021, 12:00 PMET MALWARE Lunar Builder Exfil Attempt
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lunar Builder Exfil Attempt"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|account|22 3b 20|filename=|22|"; content:".lunar|22 0d 0a|Content-Type|3a 20|application/octet-stream|0d 0a 0d 0a|<UsernameSplit>"; distance:0; fast_pattern; reference:md5,4a07860c39171b71ca0aa359b0185f33; classtype:command-and-control; sid:2032878; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_27, deployment Perimeter, deployment SSLDecrypt, malware_family Lunar_Builder, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_27;)
Apr 27, 2021, 12:00 PM
Apr 27, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 12, 2025, 9:34 PM
rules/emerging-malware.rules