Suspicious ZipExec Execution — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: medium. Source dates: 2021-11-07 / 2022-12-25.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 04561cbd16121c0a57747648aa0194609c512c286940a5fd49d8dc007a010e47

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: Suspicious ZipExec Execution
id: 90dcf730-1b71-4ae7-9ffc-6fcf62bd0132
status: test
description: ZipExec is a Proof-of-Concept (POC) tool to wrap binary-based tools into a password-protected zip file.
references:
    - https://twitter.com/SBousseaden/status/1451237393017839616
    - https://github.com/Tylous/ZipExec
author: frack113
date: 2021-11-07
modified: 2022-12-25
tags:
    - attack.execution
    - attack.stealth
    - attack.t1218
    - attack.t1202
logsource:
    category: process_creation
    product: windows
detection:
    run:
        CommandLine|contains|all:
            - '/generic:Microsoft_Windows_Shell_ZipFolder:filename='
            - '.zip'
            - '/pass:'
            - '/user:'
    delete:
        CommandLine|contains|all:
            - '/delete'
            - 'Microsoft_Windows_Shell_ZipFolder:filename='
            - '.zip'
    condition: run or delete
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://twitter.com/SBousseaden/status/1451237393017839616
• https://github.com/Tylous/ZipExec