ET MALWARE Cobalt Strike CnC Domain in DNS Lookup (bg .knonwsec .com)
Sourceet/open
Fileemerging-malware.rules
CreatedNovember 16, 2021
UpdatedMarch 26, 2024
Classificationdomain-c2
alert dns $HOME_NET any -> any any (msg:"ET MALWARE Cobalt Strike CnC Domain in DNS Lookup (bg .knonwsec .com)"; dns.query; bsize:15; content:"bg.knonwsec.com"; nocase; reference:url,twitter.com/malwrhunterteam/status/1425771461499920385 ; reference:md5,e31a96ce2760c27a4f1cf83a0b5da83b ; classtype:domain-c2; sid:2034473; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_11_16, deployment Perimeter, malware_family Cobalt_Strike, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26;)
References
| url | twitter.com/malwrhunterteam/status/1425771461499920385 |
| md5 | e31a96ce2760c27a4f1cf83a0b5da83b |
Metadata
attack targetClient_Endpoint
created at2021_11_16
deploymentPerimeter
malware familyCobalt_Strike
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_03_26
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