Versions (4)
Version DetailsCurrent
Rev: 3 • Mar 22, 2023, 12:00 PMET RETIRED SOMNIRECORD Backdoor CMD Command in DNS Query
alert dns $HOME_NET any -> any any (msg:"ET RETIRED SOMNIRECORD Backdoor CMD Command in DNS Query"; content:"|00 00 10|"; offset:12; dns.query; content:"-CMD"; fast_pattern; pcre:"/^[a-z0-9]{3}-CMD/i"; reference:url,www.elastic.co/security-labs/not-sleeping-anymore-somnirecords-wakeup-call; classtype:trojan-activity; sid:2044745; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_22, deployment Perimeter, former_category MALWARE, malware_family SOMNIRECORD, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_30, reviewed_at 2024_09_30; target:src_ip;)
Mar 22, 2023, 12:00 PM
Sep 30, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 25, 2025, 9:35 PM
rules/emerging-retired.rules