Potentially Suspicious Command Targeting Teams Sensitive Files (via process_creation)

title: Potentially Suspicious Command Targeting Teams Sensitive Files (via process_creation)
id: 636b5347-ef22-5c82-a939-f1c228fedcb9
status: stable
description: This rule 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.
references:
    - https://attack.mitre.org/techniques/T1528/
    - https://www.bleepingcomputer.com/news/security/microsoft-teams-stores-auth-tokens-as-cleartext-in-windows-linux-macs/
    - https://www.vectra.ai/blogpost/undermining-microsoft-teams-security-by-mining-tokens
author: 'Huntrule Team'
date: 2026-01-01
tags:
    - attack.credential-access
    - attack.t1528
logsource:
    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_*
falsepositives:
    - Unknown
level: medium