Potential Download/Upload Activity Using Type Command

Hunt Hypothesis

Detects usage of the “type” command to download/upload data from WebDAV server

Detection Rule

Sigma (Original)

title: Potential Download/Upload Activity Using Type Command
id: aa0b3a82-eacc-4ec3-9150-b5a9a3e3f82f
status: test
description: Detects usage of the "type" command to download/upload data from WebDAV server
references:
    - https://mr0range.com/a-new-lolbin-using-the-windows-type-command-to-upload-download-files-81d7b6179e22
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-12-14
tags:
    - attack.command-and-control
    - attack.t1105
logsource:
    product: windows
    category: process_creation
detection:
    # Note that since built in CMD commands do not trigger a process creation. This would be detected only if used in a "/c" command
    selection_upload:
        CommandLine|contains|all:
            - 'type '
            - ' > \\\\'
    selection_download:
        CommandLine|contains|all:
            - 'type \\\\'
            - ' > ' # Space are added to increase atom length and speed up matching. If your backend can handle this remove the space
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: medium

KQL (Azure Sentinel)

imProcessCreate
| where (TargetProcessCommandLine contains "type " and TargetProcessCommandLine contains " > \\\\") or (TargetProcessCommandLine contains "type \\\\" and TargetProcessCommandLine contains " > ")

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Tactic: Command and Control
• Technique: T1105 — T1105

References

• https://mr0range.com/a-new-lolbin-using-the-windows-type-command-to-upload-download-files-81d7b6179e22
• SigmaHQ Rule