""ET SMTP Message Containing search-ms URI With subquery Parameter In Message Body - Possible NTLM Hash Leak Attempt""
SID: 2050426
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, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_01_24
Reference:
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: $HOME_NET
Destination Port: [25,587]
Flow: established,to_server
Contents:
-
Value: "search-ms|3a 2f 2f|query"
-
Value: "&subquery|3d 5c 5c|"
Within: 50
PCRE:
Special Options:
- fast_pattern