Sigma rule: Created Files by Microsoft Sync Center

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-cdbfc785d0a1, updated 2022-06-02T00:00:00.000Z.

Rule

Title
Created Files by Microsoft Sync Center
Status
test
Level
medium
Author
elhoim
Date
2022-04-28
Modified
2022-06-02
File
rules/windows/file/file_event/file_event_win_susp_creation_by_mobsync.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

This rule detects suspicious files created by Microsoft Sync Center (mobsync)

Log source

product
windows
category
file_event

Detection

selection_mobsync:
    Image|endswith: '\mobsync.exe'
filter_created_file:
    TargetFilename|endswith:
        - '.dll'
        - '.exe'
condition: selection_mobsync and filter_created_file

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.privilege-escalation
  • attack.stealth
  • attack.t1055
  • attack.t1218
  • attack.execution

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/file/file_event/file_event_win_susp_creation_by_mobsync.yml

Sources and licences

  • SigmaHQ

    "Created Files by Microsoft Sync Center" by elhoim (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_susp_creation_by_mobsync.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: Created Files by Microsoft Sync Center",
entity page, dataset version ref-cdbfc785d0a1, updated 2022-06-02T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/409f8a98-4496-4aaa-818a-c931c0a8b832 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 409f8a98-4496-4aaa-818a-c931c0a8b832, 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.