""ET TROJAN NOBELIUM (TA421) EnvyScout Fingerprint Checkin""

SID: 2033052

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2021_05_28, deployment Perimeter, malware_family EnvyScout, signature_severity Major, updated_at 2021_12_07

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "Content-Type|3a 29|application/json|0d 0a|"

  • Value: "|7b 22|io|22 3a 22|" Depth: 7

  • Value: "|22 2c 22|tu|22 3a 22|"

  • Value: "|22 2c 22|sd|22 3a 22|"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_client_body

source