""ET TROJAN Observed Cobalt Strike CnC Domain (security-desk .com in TLS SNI)""
SID: 2032955
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 2021_05_13, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, signature_severity Major, updated_at 2021_05_13
Reference:
-
md5
-
efb5212c17a7cd05e087ef7a5655b4aa
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
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Value: "|16|"
-
Value: "|01|"
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Value: "|00 00 11|security-desk.com"
Within: 8
PCRE:
Special Options:
- fast_pattern