sigmacriticalHunting

Renamed Whoami Execution

Detects the execution of whoami that has been renamed to a different name to avoid detection

MITRE ATT&CK

discovery

Detection Query

selection:
  OriginalFileName: whoami.exe
filter:
  Image|endswith: \whoami.exe
condition: selection and not filter

Author

Florian Roth (Nextron Systems)

Created

2021-08-12

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.discoveryattack.t1033car.2016-03-001

Raw Content

title: Renamed Whoami Execution
id: f1086bf7-a0c4-4a37-9102-01e573caf4a0
status: test
description: Detects the execution of whoami that has been renamed to a different name to avoid detection
references:
    - https://brica.de/alerts/alert/public/1247926/agent-tesla-keylogger-delivered-inside-a-power-iso-daa-archive/
    - https://app.any.run/tasks/7eaba74e-c1ea-400f-9c17-5e30eee89906/
author: Florian Roth (Nextron Systems)
date: 2021-08-12
modified: 2022-10-09
tags:
    - attack.discovery
    - attack.t1033
    - car.2016-03-001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        OriginalFileName: 'whoami.exe'
    filter:
        Image|endswith: '\whoami.exe'
    condition: selection and not filter
falsepositives:
    - Unknown
level: critical