Detectionlowtest
Suspicious Connection to Remote Account
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
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Log Source
WindowsPowerShell Script
ProductWindows← raw: windows
CategoryPowerShell Script← raw: ps_script
Definition
Requirements: Script Block Logging must be enabled
Detection Logic
Detection Logic1 selector
detection:
selection:
ScriptBlockText|contains:
- 'System.DirectoryServices.Protocols.LdapDirectoryIdentifier'
- 'System.Net.NetworkCredential'
- 'System.DirectoryServices.Protocols.LdapConnection'
condition: selectionFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Tactics
Sub-techniques
Rule Metadata
Rule ID
1883444f-084b-419b-ac62-e0d0c5b3693f
Status
test
Level
low
Type
Detection
Created
Mon Dec 27
Author
Path
rules/windows/powershell/powershell_script/posh_ps_susp_networkcredential.yml
Raw Tags
attack.credential-accessattack.t1110.001