""ET TROJAN Cobalt Strike Malleable C2 (Microsoft Update GET)""
SID: 2032752
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_18, deployment Perimeter, deployment SSLDecrypt, malware_family Cobalt_Strike, signature_severity Major, updated_at 2020_09_18, 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: "/c/msdownload/update/others/2016/12/29136388_" Depth: 45
-
Value: ".cab"
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Value: "User-Agent|3a 20|Windows-Update-Agent/10.0.10011.16384 Client-Protocol/1.40|0d 0a|"
-
Value: !"Referer|3a|"
Within:
PCRE:
Special Options:
-
http_method
-
http_uri
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http_uri
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http_header
-
http_header