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CTD-000179

AD user has a password that matches its sAMAccountName

Critical
Active Directory
Credential Access Initial Access
v6

Signature Identity

CTD-000179
Threat ID
6
Version
IOA-IOC-IOE
Indicator Type

Threat Description

Using passwords that match the samAccountName creates a predictable and vulnerable login combination. Attackers commonly attempt such patterns during brute-force or dictionary attacks to compromise user accounts.

Cayosoft detects and alerts when an account’s password hash matches a hash derived from its samAccountName, signaling the use of weak, easily deducible credentials.

Cayosoft Guardian is designed with strict security principles to protect sensitive credential data within customer environments. Cayosoft Guardian does not store or transmit password hashes. All password-related comparison operations are executed locally on your domain controllers, ensuring that password hashes remain within your secure environment and are never sent to the internet or external systems.

This architecture ensures that password hashes are not collected, exported, or exposed outside your Active Directory domain controllers during backup, recovery, or change monitoring operations.

MITRE ATT&CK: Attack Tactics

Credential Access Initial Access

D3FEND: Defend Tactics

D3-PR (Password Rotation)

Remediation

  1. Enforce complexity requirements, length, and expiration settings through Group Policy to enhance security.
  2. Use Active Directory Users and Computers to locate active and inactive accounts.
  3. Reset passwords for compromised or inactive accounts and disable or remove unnecessary accounts to reduce security risks.

Frequently Asked Questions

What does AD user has a password that matches its sAMAccountName mean?

When an Active Directory user's password is identical to their sAMAccountName, it creates a predictable login combination. This makes it easier for attackers to guess or brute-force the credentials using password cracking algorithms.

This vulnerability allows attackers to easily gain unauthorized access to sensitive resources and data within the domain. The predictable nature of the password makes it trivial for attackers to compromise user accounts, which can have severe operational impact.

Attackers can use password cracking algorithms to guess or brute-force the credentials of an Active Directory user with a password matching their sAMAccountName. This allows them to gain unauthorized access to sensitive resources and data within the domain, potentially leading to lateral movement and further exploitation.

Cayosoft Guardian continuously monitors Active Directory for accounts with passwords matching their sAMAccountName. When such an account is found, Guardian flags it as a security issue so administrators can take corrective action.

Cayosoft Guardian alerts administrators to disable or reset passwords for accounts with predictable patterns, limiting the blast radius and reducing the likelihood of attackers exploiting such weaknesses. Additionally, Guardian provides visibility into account activity, allowing administrators to show change history and support investigation.

Stop AD Threats As They Happen

Cayosoft Protector provides continuous monitoring and real-time alerts across your entire Microsoft Identity stack

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Classification
Systems
Active Directory
Themes
Account protection
Attack Tactics
Credential Access Initial Access
Defend Tactics
D3-PR (Password Rotation)
Indicator Types
IOA IOC IOE
Related Threats
CTD-000139
Kerberos Constrained Delegation: krbtgt Risks
Critical
CTD-000122
Active Directory Schema Update Permission Risks
Critical