""ET TROJAN SSL/TLS Certificate Observed (WRAT)""

SID: 2031645

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_02_22, deployment Perimeter, signature_severity Major, tag WRAT, updated_at 2021_02_22

Reference:

  • md5

  • 7831f12dac1d4ef7dcd6e3218b8dad68

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: "|55 04 03|"

  • Value: "|0c|alsalaf.info"

  • Value: "|55 04 06|"

  • Value: "|02|US"

  • Value: "|55 04 0a|"

  • Value: "|0d|Let's Encrypt"

  • Value: "|55 04 03|"

  • Value: "|1a|Let's Encrypt Authority X3"

Within: 27

PCRE:

Special Options:

  • fast_pattern

source