Sigma rule: Uncommon Child Process Of Defaultpack.EXE

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-69864e40d0fa, updated 2024-04-22T00:00:00.000Z.

Rule

Title: Uncommon Child Process Of Defaultpack.EXE
Status: test
Level: medium
Author: frack113
Date: 2022-12-31
Modified: 2024-04-22
File: rules/windows/process_creation/proc_creation_win_defaultpack_uncommon_child_process.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects uncommon child processes of "DefaultPack.EXE" binary as a proxy to launch other programs

Log source

product: windows
category: process_creation

Detection

selection:
    ParentImage|endswith: '\DefaultPack.exe'
condition: selection

False positives (as the rule lists them)

Unknown

MITRE ATT&CK ids this rule names

T1218

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_defaultpack_uncommon_child_process.yml

Sources and licences

SigmaHQ
"Uncommon Child Process Of Defaultpack.EXE" by frack113 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_defaultpack_uncommon_child_process.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: Uncommon Child Process Of Defaultpack.EXE",
entity page, dataset version ref-69864e40d0fa, updated 2024-04-22T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/b2309017-4235-44fe-b5af-b15363011957 (accessed 2026-11-03).
Underlying source: SigmaHQ rule b2309017-4235-44fe-b5af-b15363011957, 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.