Sigma rule: File Download Using Notepad++ GUP Utility

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9a70808ec115, updated 2023-03-02T00:00:00.000Z.

Rule

Title
File Download Using Notepad++ GUP Utility
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2022-06-10
Modified
2023-03-02
File
rules/windows/process_creation/proc_creation_win_gup_download.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of the Notepad++ updater (gup) from a process other than Notepad++ to download files.

Log source

product
windows
category
process_creation

Detection

selection_img:
    - Image|endswith: '\GUP.exe'
    - OriginalFileName: 'gup.exe'
selection_cli:
    CommandLine|contains|all:
        - ' -unzipTo '
        - 'http'
filter:
    ParentImage|endswith: '\notepad++.exe'
condition: all of selection* and not filter

False positives (as the rule lists them)

  • Other parent processes other than notepad++ using GUP that are not currently identified

Tags

  • attack.command-and-control
  • attack.t1105

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_gup_download.yml

Sources and licences

  • SigmaHQ

    "File Download Using Notepad++ GUP Utility" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_gup_download.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: File Download Using Notepad++ GUP Utility",
entity page, dataset version ref-9a70808ec115, updated 2023-03-02T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/44143844-0631-49ab-97a0-96387d6b2d7c (accessed 2026-11-03).
Underlying source: SigmaHQ rule 44143844-0631-49ab-97a0-96387d6b2d7c, 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.