Versions (4)
Version DetailsCurrent
Rev: 2 • Jan 30, 2015, 12:00 PMET MALWARE MSIL/Agent.PYO Possible net.tcp CnC Beacon (stat)
alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MSIL/Agent.PYO Possible net.tcp CnC Beacon (stat)"; flow:established,to_server; content:"net.tcp|3a|//"; offset:7; depth:10; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\x3a\d+\/stat\x03\x08\x0c$/R"; content:"/stat|03 08 0c|"; fast_pattern; reference:url,welivesecurity.com/2015/01/29/msilagent-pyo-have-botnet-will-travel/; classtype:command-and-control; sid:2020336; rev:2; metadata:attack_target Client_Endpoint, created_at 2015_01_30, deployment Perimeter, confidence Medium, signature_severity Major, tag c2, updated_at 2019_10_08, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)
Jan 30, 2015, 12:00 PM
Oct 8, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules