> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/possible-dcsync-from-a-non-domain-controller.md).
# Possible DCSync from a non domain controller
### Synopsis
| Field | Value |
| -------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | Requires one of the following data sources:
Palo Alto Networks Firewall traffic Logs OR XDR Agent with eXtended Threat Hunting (XTH)
|
| Detector Tags | Impacket Analytics |
| ATT\&CK Tactic | Credential Access (TA0006), Defense Evasion (TA0005) |
| ATT\&CK Technique | OS Credential Dumping: DCSync (T1003.006), Rogue Domain Controller (T1207) |
| Severity | Low |
### Description
Attackers may pose a compromised host as a DC to replicate data to it (DCSync).
### Attacker's Goals
An attacker is trying to retrieve Active Directory data, including password hashes.
### Investigative actions
Check whether one of the machines is a new domain controller.
### Variations
DCSync from a non domain controller from a non-standard process
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006), Defense Evasion (TA0005) |
| ATT\&CK Technique | OS Credential Dumping: DCSync (T1003.006), Rogue Domain Controller (T1207) |
| Severity | High |
**Description**
Attackers may pose a compromised host as a DC to replicate data to it (DCSync).
**Attacker's Goals**
An attacker is trying to retrieve Active Directory data, including password hashes.
**Investigative actions**
Check whether one of the machines is a new domain controller.
Large DCSync from a non domain controller by AppID
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006), Defense Evasion (TA0005) |
| ATT\&CK Technique | OS Credential Dumping: DCSync (T1003.006), Rogue Domain Controller (T1207) |
| Severity | Medium |
**Description**
Attackers may pose a compromised host as a DC to replicate data to it (DCSync).
**Attacker's Goals**
An attacker is trying to retrieve Active Directory data, including password hashes.
**Investigative actions**
Check whether one of the machines is a new domain controller.
Large DCSync from a non domain controller
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006), Defense Evasion (TA0005) |
| ATT\&CK Technique | OS Credential Dumping: DCSync (T1003.006), Rogue Domain Controller (T1207) |
| Severity | Medium |
**Description**
Attackers may pose a compromised host as a DC to replicate data to it (DCSync).
**Attacker's Goals**
An attacker is trying to retrieve Active Directory data, including password hashes.
**Investigative actions**
Check whether one of the machines is a new domain controller.
Possible DCSync from an internet-facing server
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006), Defense Evasion (TA0005) |
| ATT\&CK Technique | OS Credential Dumping: DCSync (T1003.006), Rogue Domain Controller (T1207) |
| Severity | Medium |
**Description**
Attackers may pose a compromised host as a DC to replicate data to it (DCSync).
**Attacker's Goals**
An attacker is trying to retrieve Active Directory data, including password hashes.
**Investigative actions**
Check whether one of the machines is a new domain controller.
DCSync from a non domain controller
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006), Defense Evasion (TA0005) |
| ATT\&CK Technique | OS Credential Dumping: DCSync (T1003.006), Rogue Domain Controller (T1207) |
| Severity | Low |
**Description**
Attackers may pose a compromised host as a DC to replicate data to it (DCSync).
**Attacker's Goals**
An attacker is trying to retrieve Active Directory data, including password hashes.
**Investigative actions**
Check whether one of the machines is a new domain controller.
---
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