Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
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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
New or Renamed User Account with '$' Character
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
New or Renamed User Account with '$' Character
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: New or Renamed User Account with '$' Character
id: cfeed607-6aa4-4bbd-9627-b637deb723c8
status: test
description: |
Detects the creation of a user with the "$" character. This can be used by attackers to hide a user or trick detection systems that lack the parsing mechanisms.
references:
- https://twitter.com/SBousseaden/status/1387743867663958021
author: Ilyas Ochkov, oscd.community
date: 2019-10-25
modified: 2024-01-16
tags:
- attack.defense-evasion
- attack.t1036
logsource:
product: windows
service: security
detection:
selection_create:
EventID: 4720 # create user
SamAccountName|contains: '$'
selection_rename:
EventID: 4781 # rename user
NewTargetUserName|contains: '$'
filter_main_homegroup:
EventID: 4720
TargetUserName: 'HomeGroupUser$'
condition: 1 of 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/builtin/security/win_security_new_or_renamed_user_account_with_dollar_sign.yml