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srv-rr-gh-researchbt
2023-05-03 12:09:51 -07:00
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@@ -3,13 +3,13 @@ id: f5939373-8054-40ad-8c64-cec478a22a4b
version: 6
date: '2020-10-15'
author: Bhavin Patel, Patrick Bareiss, Splunk
status: production
type: TTP
status: deprecated
type: Hunting
description: This search looks for specific authentication events from the Windows
Security Event logs to detect potential attempts at using the Pass-the-Hash technique.
Security Event logs to detect potential attempts at using the Pass-the-Hash technique. This search is DEPRECATED as it is possible for event code 4624 to generate a high level of noise, as legitimate logon events may also trigger this event code. This can be especially true in environments with high levels of user activity, such as those with many concurrent logons or frequent logon attempts.
data_source:
- Windows Security 4624
search: '`wineventlog_security` EventCode=4624 (Logon_Type=3 Logon_Process=NtLmSsp WorkstationName=WORKSTATION NOT AccountName="ANONYMOUS LOGON") OR (Logon_Type=9 Logon_Process=seclogo)
search: '`wineventlog_security` EventCode=4624 (Logon_Type=3 Logon_Process=NtLmSsp NOT AccountName="ANONYMOUS LOGON") OR (Logon_Type=9 Logon_Process=seclogo)
| fillnull
| stats count min(_time) as firstTime max(_time) as lastTime by EventCode, Logon_Type, WorkstationName, user, dest
| `security_content_ctime(firstTime)`