Sigma rule: Renamed Microsoft Teams Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-06de73327b7d, updated 2024-07-12T00:00:00.000Z.

Rule

Title
Renamed Microsoft Teams Execution
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2024-07-12
File
rules/windows/process_creation/proc_creation_win_renamed_msteams.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the execution of a renamed Microsoft Teams binary.

Log source

product
windows
category
process_creation

Detection

selection:
    OriginalFileName:
        - 'msteams.exe'
        - 'teams.exe'
filter_main_legit_names:
    Image|endswith:
        - '\msteams.exe'
        - '\teams.exe'
condition: selection and not 1 of filter_main_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth

References

  • Internal Research

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_renamed_msteams.yml

Sources and licences

  • SigmaHQ

    "Renamed Microsoft Teams Execution" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_renamed_msteams.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: Renamed Microsoft Teams Execution",
entity page, dataset version ref-06de73327b7d, updated 2024-07-12T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/88f46b67-14d4-4f45-ac2c-d66984f22191 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 88f46b67-14d4-4f45-ac2c-d66984f22191, 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.