ET MALWARE Observed CobaltStrike Loader Domain (cybersecyrity .com in TLS SNI)
Sourceet/open
CreatedJune 1, 2021
UpdatedJune 1, 2021
Classificationdomain-c2
alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Observed CobaltStrike Loader Domain (cybersecyrity .com in TLS SNI)"; flow:established,to_server; tls.sni; content:"cybersecyrity.com"; bsize:17; fast_pattern; reference:md5,611d4c566575d5657661766e27292d28; classtype:domain-c2; sid:2033060; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_06_01, deployment Perimeter, malware_family Cobalt_Strike, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
References
| md5 | 611d4c566575d5657661766e27292d28 |
Metadata
affected productWindows_XP_Vista_7_8_10_Server_32_64_Bit
attack targetClient_Endpoint
created at2021_06_01
deploymentPerimeter
malware familyCobalt_Strike
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2021_06_01
mitre tactic idTA0011
mitre tactic nameCommand_And_Control
mitre technique idT1071
mitre technique nameApplication_Layer_Protocol
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