""ET TROJAN Possible UNC1878/FIN12 Cobalt Strike CnC SSL Cert Inbound (office)""
SID: 2031134
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2020_10_29, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2020_10_29
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: 443
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "|16|"
-
Value: "|0b|"
-
Value: "|06 03 55 04 06|"
-
Value: "|02|US"
-
Value: "|06 03 55 04 08|"
-
Value: "|02|"
-
Value: "|06 03 55 04 0a|"
-
Value: "|06|Office"
-
Value: "|06 03 55 04 0b|"
-
Value: "|00|"
-
Value: "|06 03 55 04 06|"
-
Value: "|02|US"
-
Value: "|06 03 55 04 08|"
-
Value: "|02|"
-
Value: "|06 03 55 04 0a|"
-
Value: "|06|Office"
-
Value: "|06 03 55 04 0b|"
-
Value: "|00|"
Within: 1
PCRE:
Special Options:
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nocase
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fast_pattern
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nocase