Pass the Hash
Pass the hash (PtH) is a method of authenticating as a user without having access to the user's cleartext password. This method bypasses standard authentication steps that require a cleartext password, moving directly into the portion of the authentication that uses the password hash. In this technique, valid password hashes for the account being used are captured using a Credential Access technique. Captured hashes are used with PtH to authenticate as that user. Once authenticated, PtH may be used to perform actions on local or remote systems. Windows 7 and higher with KB2871997 require valid domain user credentials or RID 500 administrator hashes. (Citation: NSA Spotting)
Mitigations |
|
| Mitigation | Description |
|---|---|
| Password Policies |
Set and enforce secure password policies for accounts. |
| Privileged Account Management |
Manage the creation, modification, use, and permissions associated to privileged accounts, including SYSTEM and root. |
| Pass the Hash Mitigation |
Monitor systems and domain logs for unusual credential logon activity. Prevent access to Valid Accounts. Apply patch KB2871997 to Windows 7 and higher systems to limit the default access of accounts in the local administrator group.
Enable pass the hash mitigations to apply UAC restrictions to local accounts on network logon. The associated Registry key is located |
| Update Software |
Perform regular software updates to mitigate exploitation risk. |
| User Account Control |
Configure Windows User Account Control to mitigate risk of adversaries obtaining elevated process access. |
| User Account Management |
Manage the creation, modification, use, and permissions associated to user accounts. |
Detection
Audit all logon and credential use events and review for discrepancies. Unusual remote logins that correlate with other suspicious activity (such as writing and executing binaries) may indicate malicious activity. NTLM LogonType 3 authentications that are not associated to a domain login and are not anonymous logins are suspicious.
Связанные риски
Каталоги
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