""ET TROJAN SideWinder APT antibot script""

SID: 2036786

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_06_02, deployment Perimeter, deployment SSLDecrypt, malware_family Sidewinder_APT, performance_impact Low, signature_severity Major, updated_at 2022_06_02

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: "const encriptedData|20 3d 20|encode|28|finalData, secretKey|29 3b|"

  • Value: "Body|3a 20|encriptedData"

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source