Octopus Scanner Malware — Sigma Rule

Rule metadata and linked tags

Author: NVISO. Source status: test; severity: high. Source dates: 2020-06-09 / 2021-11-27.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: f103ee389bebab256feadf9e5f293e64e37d616d1790879cfe4f9e3e8ccfb594

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: Octopus Scanner Malware
id: 805c55d9-31e6-4846-9878-c34c75054fe9
status: test
description: Detects Octopus Scanner Malware.
references:
    - https://securitylab.github.com/research/octopus-scanner-malware-open-source-supply-chain
author: NVISO
date: 2020-06-09
modified: 2021-11-27
tags:
    - attack.initial-access
    - attack.t1195
    - attack.t1195.001
logsource:
    product: windows
    category: file_event
detection:
    selection:
        TargetFilename|endswith:
            - '\AppData\Local\Microsoft\Cache134.dat'
            - '\AppData\Local\Microsoft\ExplorerSync.db'
    condition: selection
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://securitylab.github.com/research/octopus-scanner-malware-open-source-supply-chain