""ET TROJAN System Information Being Sent in User-Agent""

SID: 2037038

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_06_17, deployment Perimeter, signature_severity Major, updated_at 2022_06_17

Reference:

  • md5

  • 64f0fdfbfaa142ae83d8c3f9326e7a94

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "User-Agent|3a 20|UserName|3a 20|"

  • Value: "System|3a 20|"

  • Value: "GPU|3a 20|"

  • Value: "RAM|3a 20|"

  • Value: "CPU|3a 20|"

Within:

PCRE: "/User-Agent\x3a\x20UserName\x3a\x20[^\r\n]+(?:\x20\x2f\x20(?:System|RAM|[CG]PU)\x3a\x20){2,}[^\r\n]+(?:\r\n)?/Hm"

Special Options:

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

source