Versions (4)
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Rev: 1 • Oct 16, 2019, 12:00 PMET MALWARE APT 41 LOWKEY Backdoor [TCP Relay Module] - PID Injection Command
alert tcp $HOME_NET any -> $HOME_NET any (msg:"ET MALWARE APT 41 LOWKEY Backdoor [TCP Relay Module] - PID Injection Command"; flow:established,to_server; content:"|00 00 00 00 00 05 10|"; startswith; fast_pattern; content:"|00 00 00 00|"; distance:5; within:4; reference:url,www.fireeye.com/blog/threat-research/2019/10/lowkey-hunting-for-the-missing-volume-serial-id.html; classtype:command-and-control; sid:2028886; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_10_16, deployment Internal, malware_family LOWKEY, performance_impact Low, confidence Medium, signature_severity Major, tag APT41, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_16;)
Oct 16, 2019, 12:00 PM
Oct 16, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 22, 2025, 9:34 PM
rules/emerging-malware.rules