""ET WEB_SPECIFIC_APPS Server Response Containing search-ms URI With subquery Parameter - Possible NTLM Hash Leak Attempt""

SID: 2050429

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, created_at 2024_01_24, performance_impact Low, confidence High, updated_at 2024_01_24

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "search-ms|3a 2f 2f|query"

  • Value: "&subquery|3d 5c 5c|"

Within: 50

PCRE:

Special Options:

  • file_data

  • fast_pattern

source