Sigma rule: Potentially Suspicious Command Targeting Teams Sensitive Files

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-f823a35ed74a, updated 2023-12-18T00:00:00.000Z.

Rule

Title: Potentially Suspicious Command Targeting Teams Sensitive Files
Status: test
Level: medium
Author: @SerkinValery
Date: 2022-09-16
Modified: 2023-12-18
File: rules/windows/process_creation/proc_creation_win_teams_suspicious_command_line_cred_access.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects a commandline containing references to the Microsoft Teams database or cookies files from a process other than Teams.
The database might contain authentication tokens and other sensitive information about the logged in accounts.

Log source

product: windows
category: process_creation

Detection

selection:
    CommandLine|contains:
        - '\Microsoft\Teams\Cookies'
        - '\Microsoft\Teams\Local Storage\leveldb'
filter_main_legit_locations:
    Image|endswith: '\Microsoft\Teams\current\Teams.exe'
condition: selection and not 1 of filter_main_*

False positives (as the rule lists them)

Unknown

MITRE ATT&CK ids this rule names

T1528

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_teams_suspicious_command_line_cred_access.yml

Sources and licences

SigmaHQ
"Potentially Suspicious Command Targeting Teams Sensitive Files" by @SerkinValery (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_teams_suspicious_command_line_cred_access.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: Potentially Suspicious Command Targeting Teams Sensitive Files",
entity page, dataset version ref-f823a35ed74a, updated 2023-12-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d2eb17db-1d39-41dc-b57f-301f6512fa75 (accessed 2026-11-03).
Underlying source: SigmaHQ rule d2eb17db-1d39-41dc-b57f-301f6512fa75, 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.