Detectionhightest
Potential Privilege Escalation via Local Kerberos Relay over LDAP
Detects a suspicious local successful logon event where the Logon Package is Kerberos, the remote address is set to localhost, and the target user SID is the built-in local Administrator account. This may indicate an attempt to leverage a Kerberos relay attack variant that can be used to elevate privilege locally from a domain joined limited user to local System privileges.
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Log Source
Windowssecurity
ProductWindows← raw: windows
Servicesecurity← raw: security
Detection Logic
Detection Logic2 selectors
detection:
selection:
EventID: 4624
LogonType: 3
AuthenticationPackageName: 'Kerberos'
IpAddress: '127.0.0.1'
TargetUserSid|startswith: 'S-1-5-21-'
TargetUserSid|endswith: '-500'
filter_main_ip_null:
IpPort: '0'
condition: selection and not 1 of filter_main_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Rule Metadata
Rule ID
749c9f5e-b353-4b90-a9c1-05243357ca4b
Status
test
Level
high
Type
Detection
Created
Wed Apr 27
Modified
Tue Aug 13
Author
Path
rules/windows/builtin/security/account_management/win_security_susp_privesc_kerberos_relay_over_ldap.yml
Raw Tags
attack.defense-evasionattack.privilege-escalationattack.credential-accessattack.t1548