sigmaDRL-1.1from SigmaHQ/sigma

Suspicious Creation TXT File in User Desktop

Ransomware create txt file in the user Desktop

Quality

FP risk

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ATT&CK techniques

T1486

Rule sourcerules/windows/file/file_event/file_event_win_susp_desktop_txt.yml

title: Suspicious Creation TXT File in User Desktop
id: caf02a0a-1e1c-4552-9b48-5e070bd88d11
status: test
description: Ransomware create txt file in the user Desktop
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1486/T1486.md#atomic-test-5---purelocker-ransom-note
author: frack113
date: 2021-12-26
tags:
    - attack.impact
    - attack.t1486
logsource:
    product: windows
    category: file_event
detection:
    selection:
        Image|endswith: '\cmd.exe'
        TargetFilename|contains|all:
            - '\Users\'
            - '\Desktop\'
        TargetFilename|endswith: '.txt'
    condition: selection
falsepositives:
    - Unknown
level: high