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SID: 2039801 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1Nov 17, 2022, 12:00 PM

ET MALWARE Cobalt Strike Activity (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Activity (GET)"; flow:established,to_server; http.request_line; content:"GET /1Pfu HTTP/1.1"; fast_pattern; http.header_names; content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:49; http.user_agent; content:"|3b 20|MANM|29|"; endswith; reference:md5,8eaebe560669154c71b266f858a56c37; reference:url,github.com/DCSO/Blog_CyTec/blob/main/2022_11_hz_rat_goes_china/ioc_list.txt; reference:url,twitter.com/DCSO_CyTec/status/1592866591926255619; classtype:trojan-activity; sid:2039801; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_11_17, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2022_11_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)

Nov 17, 2022, 12:00 PM

Nov 17, 2022, 12:00 PM

Sep 21, 2024, 3:00 AM

Sep 21, 2024, 3:00 AM

rules/emerging-malware.rules