""ET TROJAN Observed Malicious SSL Cert (TA577)""

SID: 2049709

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_12_15, deployment Perimeter, signature_severity Major, tag SSL_Malicious_Cert, tag TA577, updated_at 2023_12_15

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|SX"

  • Value: "|06 03 55 04 08|"

  • Value: "|02|GE"

  • Value: "|06 03 55 04 0a|"

  • Value: "|0a|Hyalophyre"

  • Value: "|06 03 55 04 0b|"

  • Value: "|07|Frument"

  • Value: "|06 03 55 04 07|"

  • Value: "|0b|Strainerman"

  • Value: "|06 03 55 04 03|"

  • Value: "|10|phrenitis.studio"

Within: 17

PCRE:

Special Options:

  • fast_pattern

source