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
Suspicious OpenSSH Daemon Error
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious OpenSSH Daemon Error
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: Suspicious OpenSSH Daemon Error
id: e76b413a-83d0-4b94-8e4c-85db4a5b8bdc
status: test
description: Detects suspicious SSH / SSHD error messages that indicate a fatal or suspicious error that could be caused by exploiting attempts
references:
- https://github.com/openssh/openssh-portable/blob/c483a5c0fb8e8b8915fad85c5f6113386a4341ca/ssherr.c
- https://github.com/ossec/ossec-hids/blob/1ecffb1b884607cb12e619f9ab3c04f530801083/etc/rules/sshd_rules.xml
author: Florian Roth (Nextron Systems)
date: 2017-06-30
modified: 2021-11-27
tags:
- attack.initial-access
- attack.t1190
logsource:
product: linux
service: sshd
detection:
keywords:
- 'unexpected internal error'
- 'unknown or unsupported key type'
- 'invalid certificate signing key'
- 'invalid elliptic curve value'
- 'incorrect signature'
- 'error in libcrypto'
- 'unexpected bytes remain after decoding'
- 'fatal: buffer_get_string: bad string'
- 'Local: crc32 compensation attack'
- 'bad client public DH value'
- 'Corrupted MAC on input'
condition: keywords
falsepositives:
- Unknown
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/linux/builtin/sshd/lnx_sshd_susp_ssh.yml