Detectionhightest
File Download Using Notepad++ GUP Utility
Detects execution of the Notepad++ updater (gup) from a process other than Notepad++ to download files.
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Launch
Nasreddine Bencherchali (Nextron Systems)Created Fri Jun 10Updated Thu Mar 0244143844-0631-49ab-97a0-96387d6b2d7cwindows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic3 selectors
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 filterFalse Positives
Other parent processes other than notepad++ using GUP that are not currently identified
References
MITRE ATT&CK
Tactics
Techniques
Rule Metadata
Rule ID
44143844-0631-49ab-97a0-96387d6b2d7c
Status
test
Level
high
Type
Detection
Created
Fri Jun 10
Modified
Thu Mar 02
Path
rules/windows/process_creation/proc_creation_win_gup_download.yml
Raw Tags
attack.command-and-controlattack.t1105