""ET TROJAN Cobalt Strike Activity (GET)""
SID: 2034081
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_10_01, deployment Perimeter, deployment SSLDecrypt, malware_family Cobalt_Strike, signature_severity Major, updated_at 2021_10_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: "GET"
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Value: "/Home.aspx"
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Value: "Host|3a 20|www.funding-exchange.org|0d 0a|"
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Value: "ASP.NET_SessionId=" Depth: 18
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Value: !"Referer|3a 20|"
Within:
PCRE: "/Accept\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\nAccept-Encoding\x3a\x20[^\r\n]+\r\nDNT\x3a\x20[^\r\n]+\r\nCache-Control\x3a\x20[^\r\n]+\r\n/Hmi"
Special Options:
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http_method
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http_uri
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fast_pattern
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http_header
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http_cookie
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http_header