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Rev: 1 • Aug 4, 2019, 12:00 PMET MALWARE Covenant Framework HTTP Hello World Server Response
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Covenant Framework HTTP Hello World Server Response"; flow:established,to_client; file_data; content:"Hello World! eyJHVUlEIjoi"; fast_pattern; threshold:type limit, count 1, seconds 60, track by_dst; reference:url,posts.specterops.io/entering-a-covenant-net-command-and-control-e11038bcf462; classtype:trojan-activity; sid:2027794; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_08_04, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_04;)
Aug 4, 2019, 12:00 PM
Aug 4, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 23, 2025, 9:34 PM
rules/emerging-malware.rules