Sigma rule: TerraMaster TOS CVE-2020-28188

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-34c4dea31c93, updated 2023-01-02T00:00:00.000Z.

Rule

Title
TerraMaster TOS CVE-2020-28188
Status
test
Level
high
Author
Bhabesh Raj
Date
2021-01-25
Modified
2023-01-02
File
rules-emerging-threats/2020/Exploits/CVE-2020-28188/web_cve_2020_28188_terramaster_rce_exploit.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the exploitation of the TerraMaster TOS vulnerability described in CVE-2020-28188

Log source

category
webserver

Detection

base_url:
    cs-method: 'GET'
    cs-uri-query|contains|all:
        - '/include/makecvs.php'
        - '?Event='
payload:
    cs-uri-query|contains:
        - 'curl'
        - 'wget'
        - '.py'
        - '.sh'
        - 'chmod'
        - '_GET'
condition: base_url and payload

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.t1190
  • attack.initial-access
  • cve.2020-28188
  • detection.emerging-threats

CVEs this rule names

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2020/Exploits/CVE-2020-28188/web_cve_2020_28188_terramaster_rce_exploit.yml

Sources and licences

  • SigmaHQ

    "TerraMaster TOS CVE-2020-28188" by Bhabesh Raj (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2020/Exploits/CVE-2020-28188/web_cve_2020_28188_terramaster_rce_exploit.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: TerraMaster TOS CVE-2020-28188",
entity page, dataset version ref-34c4dea31c93, updated 2023-01-02T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/15c312b9-00d0-4feb-8870-7d940a4bdc5e (accessed 2026-11-03).
Underlying source: SigmaHQ rule 15c312b9-00d0-4feb-8870-7d940a4bdc5e, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.