alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Cobalt Strike Activity (GET)"; flow:established,to_server; http.request_line; content:"GET /dequeue/paypal"; startswith; fast_pattern; http.header_names; content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a|Cache-Control|0d 0a 0d 0a|"; http.host; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/"; reference:md5,b96171a46e7a83815b90271f711727aa; reference:url,twitter.com/malwrhunterteam/status/1471915892980264962/; classtype:trojan-activity; sid:2034756; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_12_17, deployment Perimeter, malware_family Cobalt_Strike, confidence Medium, signature_severity Major, updated_at 2024_04_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation;)