""ET TROJAN Latrodectus Alive Response M1""

SID: 2049232

Revision: 3

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_11_15, deployment Perimeter, malware_family Latrodectus, performance_impact Significant, confidence High, signature_severity Major, updated_at 2023_12_15, reviewed_at 2024_02_13

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|0d 0a|5,1"

  • Value: "200"

  • Value: "Server|3a 20|nginx/"

  • Value: "5,1" Depth: 3

Within:

PCRE: "/^5,1[0-9]{9}$/"

Special Options:

  • http_stat_code

  • http_header

  • file_data

source