Sigma rule: Sysprep on AppData Folder

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-dcf192f245d1, updated 2021-11-27T00:00:00.000Z.

Rule

Title
Sysprep on AppData Folder
Status
test
Level
medium
Author
Florian Roth (Nextron Systems)
Date
2018-06-22
Modified
2021-11-27
File
rules/windows/process_creation/proc_creation_win_sysprep_appdata.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects suspicious sysprep process start with AppData folder as target (as used by Trojan Syndicasec in Thrip report by Symantec)

Log source

product
windows
category
process_creation

Detection

selection:
    Image|endswith: '\sysprep.exe'
    CommandLine|contains: '\AppData\'
condition: selection

False positives (as the rule lists them)

  • False positives depend on scripts and administrative tools used in the monitored environment

Tags

  • attack.execution
  • attack.t1059

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_sysprep_appdata.yml

Sources and licences

  • SigmaHQ

    "Sysprep on AppData Folder" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_sysprep_appdata.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: Sysprep on AppData Folder",
entity page, dataset version ref-dcf192f245d1, updated 2021-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d5b9ae7a-e6fc-405e-80ff-2ff9dcc64e7e (accessed 2026-11-03).
Underlying source: SigmaHQ rule d5b9ae7a-e6fc-405e-80ff-2ff9dcc64e7e, 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.