""ET TROJAN EVILNUM CnC Connectivity Check""

SID: 2030124

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_07, deployment Perimeter, signature_severity Major, updated_at 2020_05_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: "GET"

  • Value: "/tran/check.php?id=&ver=" Depth: 24

  • Value: "Accept|3a 20|text/html, application/xhtml+xml, /|0d 0a|"

  • Value: !"Referer"

Within:

PCRE: "/&ver=\d.\d$/Ui"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

source