ET MALWARE Observed FIN12 Related Cobalt Strike Domain (netrie .com in TLS SNI)

7.0.35.0SID: 2034180Rev: 2Enabled1 views
Sourceet/open
Fileemerging-malware.rules
CreatedOctober 13, 2021
UpdatedMarch 25, 2024
Classificationcommand-and-control
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed FIN12 Related Cobalt Strike Domain (netrie .com in TLS SNI)"; flow:established,to_server; tls.sni; bsize:10; content:"netrie.com"; fast_pattern; reference:md5,21b4d9c046db511738232582b41f453c; reference:url,www.mandiant.com/resources/fin12-ransomware-intrusion-actor-pursuing-healthcare-targets; classtype:command-and-control; sid:2034180; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_10_13, deployment Perimeter, malware_family Fin12, confidence High, signature_severity Major, tag c2, updated_at 2024_03_25, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)

References

md5
21b4d9c046db511738232582b41f453c
Google SearchBrave Search
urlwww.mandiant.com/resources/fin12-ransomware-intrusion-actor-pursuing-healthcare-targets

Metadata

attack targetClient_Endpoint
created at2021_10_13
deploymentPerimeter
malware familyFin12
confidenceHigh
signature severityMajor
tagc2
updated at2024_03_25
mitre tactic idTA0010
mitre tactic nameExfiltration
mitre technique idT1041
mitre technique nameExfiltration_Over_C2_Channel

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