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Pass-the-Ticket Detection — API Reference
Libraries
| Library | Install | Purpose |
|---|---|---|
| impacket | pip install impacket |
Kerberos ticket manipulation (ticketer.py, getST.py) |
| ldap3 | pip install ldap3 |
AD LDAP queries for SPN and account enumeration |
| pySigma | pip install pySigma |
Sigma rule parsing and conversion |
Key Windows Event IDs
| Event ID | Description | Relevance |
|---|---|---|
| 4768 | Kerberos TGT request | Golden ticket detection (RC4 = 0x17) |
| 4769 | Kerberos service ticket request | Silver ticket / Kerberoasting |
| 4770 | Kerberos service ticket renewed | Ticket reuse indicator |
| 4771 | Kerberos pre-auth failed | Password spray detection |
| 4624 | Successful logon | Correlate with ticket usage |
Encryption Type Constants
| Value | Algorithm | Concern |
|---|---|---|
| 0x17 | RC4-HMAC | Downgrade attack indicator |
| 0x12 | AES-256 | Expected modern encryption |
| 0x11 | AES-128 | Acceptable encryption |
MITRE ATT&CK Mapping
| Technique | ID |
|---|---|
| Use Alternate Authentication Material: Pass the Ticket | T1550.003 |
| Steal or Forge Kerberos Tickets: Golden Ticket | T1558.001 |
| Steal or Forge Kerberos Tickets: Silver Ticket | T1558.002 |