""ET WEB_CLIENT WebDAV PUT Request for .url Flowbit Set""

SID: 2049319

Revision: 1

Class Type: misc-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_11_28, deployment Perimeter, performance_impact Significant, signature_severity Informational, updated_at 2023_11_28

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "PUT"

  • Value: ".url"

  • Value: "|0d 0a|translate|3a 20|f|0d 0a|"

  • Value: "User-Agent|3a 20|Microsoft-WebDAV-MiniRedir/"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/.url$/U"

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

  • http_header

  • http_header

source