Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
This studio is built around Phoenix's own rule corpus, not a blank editor. Search by title or rule id, choose a live sigma-cli backend, then reveal pipelines only when you actually need them.
Indexed Rules
3,707
Ready to search
Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Microsoft Teams Sensitive File Access By Uncommon Applications
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Microsoft Teams Sensitive File Access By Uncommon Applications
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: Microsoft Teams Sensitive File Access By Uncommon Applications
id: 65744385-8541-44a6-8630-ffc824d7d4cc
status: test
description: |
Detects file access attempts to sensitive Microsoft teams files (leveldb, cookies) by an uncommon process.
references:
- https://www.bleepingcomputer.com/news/security/microsoft-teams-stores-auth-tokens-as-cleartext-in-windows-linux-macs/
- https://www.vectra.ai/blog/undermining-microsoft-teams-security-by-mining-tokens
author: '@SerkinValery'
date: 2024-07-22
tags:
- attack.credential-access
- attack.t1528
logsource:
product: windows
category: file_access
definition: 'Requirements: Microsoft-Windows-Kernel-File ETW provider'
detection:
selection:
FileName|contains:
- '\Microsoft\Teams\Cookies'
- '\Microsoft\Teams\Local Storage\leveldb'
filter_main_legit_location:
# Note: its best to filter the full path to avoid false negatives
Image|endswith: '\Microsoft\Teams\current\Teams.exe'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unknown
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/file/file_access/file_access_win_teams_sensitive_files.yml