SID: 2033594

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_07_28, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_07_28

Reference:

  • md5

  • be4ab3c46d87b1900137647814f0f305

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: "/expres.php?op=2"

  • Value: "Mozilla/4.0|20|(compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.5)"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+Mozilla\/4.0\x20(compatible\x3b\x20Win32\x3b\x20WinHttp.WinHttpRequest.5)/Hmi"

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_header

  • http_header

source