Sigma rule: Local File Read Using Curl.EXE

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-dc52ccf3e4b1, updated 2023-07-27T00:00:00.000Z.

Rule

Title
Local File Read Using Curl.EXE
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-07-27
File
rules/windows/process_creation/proc_creation_win_curl_local_file_read.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of "curl.exe" with the "file://" protocol handler in order to read local files.

Log source

product
windows
category
process_creation

Detection

selection_img:
    - Image|endswith: '\curl.exe'
    - OriginalFileName: 'curl.exe'
selection_cli:
    CommandLine|contains: 'file:///'
condition: all of selection_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.execution

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_curl_local_file_read.yml

Sources and licences

  • SigmaHQ

    "Local File Read Using Curl.EXE" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_curl_local_file_read.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: Local File Read Using Curl.EXE",
entity page, dataset version ref-dc52ccf3e4b1, updated 2023-07-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/aa6f6ea6-0676-40dd-b510-6e46f02d8867 (accessed 2026-11-03).
Underlying source: SigmaHQ rule aa6f6ea6-0676-40dd-b510-6e46f02d8867, 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.