Sigma rule: Potential Application Whitelisting Bypass via Dnx.EXE

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-c3e497443583, updated 2024-04-24T00:00:00.000Z.

Rule

Title
Potential Application Whitelisting Bypass via Dnx.EXE
Status
test
Level
medium
Author
Beyu Denis, oscd.community
Date
2019-10-26
Modified
2024-04-24
File
rules/windows/process_creation/proc_creation_win_dnx_execute_csharp_code.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the execution of Dnx.EXE. The Dnx utility allows for the execution of C# code.
Attackers might abuse this in order to bypass application whitelisting.

Log source

product
windows
category
process_creation

Detection

selection:
    Image|endswith: '\dnx.exe'
condition: selection

False positives (as the rule lists them)

  • Legitimate use of dnx.exe by legitimate user

Tags

  • attack.stealth
  • attack.t1218
  • attack.t1027.004

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/windows/process_creation/proc_creation_win_dnx_execute_csharp_code.yml

Sources and licences

  • SigmaHQ

    "Potential Application Whitelisting Bypass via Dnx.EXE" by Beyu Denis, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_dnx_execute_csharp_code.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: Potential Application Whitelisting Bypass via Dnx.EXE",
entity page, dataset version ref-c3e497443583, updated 2024-04-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/81ebd28b-9607-4478-bf06-974ed9d53ed7 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 81ebd28b-9607-4478-bf06-974ed9d53ed7, 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.