""ET TROJAN Latrodectus 404 Response""

SID: 2049233

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_11_15, deployment Perimeter, malware_family Latrodectus, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2023_12_15

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

• Value: "404"

• Value: "Server|3a 20|nginx/"

• Value: "|0a 20 20|"

• Value: ""

Within:

PCRE: "/^(?:\r\n){50}$/R"

Special Options:

• http_stat_code

• http_header

• file_data

source