Versions (5)
Version DetailsCurrent
Rev: 1 • Jan 20, 2021, 12:00 PMET MALWARE ELF/Freakout IRC Checkin
alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE ELF/Freakout IRC Checkin"; flow:established,to_server; content:"NICK|20|[HAX|7c|"; depth:10; reference:url,research.checkpoint.com/2021/freakout-leveraging-newest-vulnerabilities-for-creating-a-botnet/; classtype:command-and-control; sid:2031534; rev:1; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2021_01_20, deployment Perimeter, malware_family ELF_Freakout, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_01_20;)
Jan 20, 2021, 12:00 PM
Jan 20, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 15, 2025, 9:36 PM
rules/emerging-malware.rules