Compress Data and Lock With Password for Exfiltration With WINZIP — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2021-07-27 / 2022-12-25.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 944ab577205408fdfaecea57de25772bb6e8795e9b7910e01415464ee06e6cc5

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Compress Data and Lock With Password for Exfiltration With WINZIP
id: e2e80da2-8c66-4e00-ae3c-2eebd29f6b6d
status: test
description: An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md
author: frack113
date: 2021-07-27
modified: 2022-12-25
tags:
    - attack.collection
    - attack.t1560.001
logsource:
    category: process_creation
    product: windows
detection:
    selection_winzip:
        CommandLine|contains:
            - 'winzip.exe'
            - 'winzip64.exe'
    selection_password:
        CommandLine|contains: '-s"'
    selection_other:
        CommandLine|contains:
            - ' -min '
            - ' -a '
    condition: all of selection*
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md