""ET TROJAN Possible Dyre SSL Cert M2 (L CN)""
SID: 2021433
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2015_07_17, deployment Perimeter, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2019_08_15
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: [443,4443]
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
-
Value: "|16|"
-
Value: "|0b|"
-
Value: "|02 09 00|"
-
Value: "|06 03 55 04 06 13 02|"
-
Value: "|30 09 06 03 55 04 08 0c 02|"
-
Value: "|06 03 55 04 07 0c|"
-
Value: "|06 03 55 04 0a 0c|"
-
Value: !"|20|"
-
Value: "|06 03 55 04 03 0c|"
-
Value: !"|2e|"
-
Value: !"|2a|"
Within: cnlen
PCRE: "/^(?=[a-z0-9]{0,119}[A-Z])(?=[A-Z0-9]{0,119}[a-z])(?P[a-zA-Z0-9]{10,120}[01]).+?\x55\x04\x03.{2}(?P=var)/Rs"
Special Options:
- fast_pattern