Suspicious Connection to Remote Account

Title: Suspicious Connection to Remote Account
Status: test
Description:Adversaries with no prior knowledge of legitimate credentials within the system or environment may guess passwords to attempt access to accounts. Without knowledge of the password for an account, an adversary may opt to systematically guess the password using a repetitive or iterative mechanism
References:
  -https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1110.001/T1110.001.md#atomic-test-2---brute-force-credentials-of-single-active-directory-domain-user-via-ldap-against-domain-controller-ntlm-or-kerberos
Author: frack113
Date: 2021-12-27
modified:None
Tags:

• -'attack.credential-access'
• -'attack.t1110.001'

Logsource:

• product: windows
• category: ps_script
• definition: Requirements: Script Block Logging must be enabled

Detection:
  selection:
    ScriptBlockText|contains:
      -'System.DirectoryServices.Protocols.LdapDirectoryIdentifier'
      -'System.Net.NetworkCredential'
      -'System.DirectoryServices.Protocols.LdapConnection'

  condition:selection
Falsepositives:
  -Unknown
Level: low