Detection rules › Sigma

PowerShell Credential Prompt

Status
test
Severity
high
Log source
product windows, category ps_script
Author
John Lambert (idea), Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects PowerShell calling a credential prompt

MITRE ATT&CK coverage

Event coverage

Rule body yaml

title: PowerShell Credential Prompt
id: ca8b77a9-d499-4095-b793-5d5f330d450e
status: test
description: Detects PowerShell calling a credential prompt
references:
    - https://twitter.com/JohnLaTwC/status/850381440629981184
    - https://t.co/ezOTGy1a1G
author: John Lambert (idea), Florian Roth (Nextron Systems)
date: 2017-04-09
modified: 2022-12-25
tags:
    - attack.credential-access
    - attack.execution
    - attack.t1059.001
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains: 'PromptForCredential'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    ScriptBlockText|contains: 'PromptForCredential'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
ScriptBlockTextmatch
  • PromptForCredential