1200KM / sigma-rule
Suspicious SysAidServer Child — Sigma Rule
Sigma rule 60bfeac3-0d35-4302-8efb-1dd16f715bc6. Suspicious SysAidServer Child — Sigma Rule. Detects suspicious child processes of SysAidServer (as seen in MERCURY threat actor intrusions)
Rule metadata and linked tags
Author: Florian Roth (Nextron Systems). Source status: test; severity: medium. Source dates: 2022-08-26 / not supplied.
{
"category": "process_creation",
"product": "windows"
}Pinned original Sigma rule · Detection Rule License 1.1
Source SHA-256: a423a545dc22272a0ceb1f36f8dd7186bed5d1570ff474a832e4e09639f34ffd
Detection logic
Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.
title: Suspicious SysAidServer Child
id: 60bfeac3-0d35-4302-8efb-1dd16f715bc6
status: test
description: Detects suspicious child processes of SysAidServer (as seen in MERCURY threat actor intrusions)
references:
- https://www.microsoft.com/security/blog/2022/08/25/mercury-leveraging-log4j-2-vulnerabilities-in-unpatched-systems-to-target-israeli-organizations/
author: Florian Roth (Nextron Systems)
date: 2022-08-26
tags:
- attack.lateral-movement
- attack.t1210
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith:
- '\java.exe'
- '\javaw.exe'
ParentCommandLine|contains: 'SysAidServer'
condition: selection
falsepositives:
- Unknown
level: medium
False positives
- Unknown
Source references
Connected ecosystem references
Exact source-tagged techniques
Telemetry review
Read the original logsource above, then inspect the linked detection workspaces for technique-level sensor context. No per-rule telemetry equivalence is inferred.
Pinned research references. No browser attack runner, live simulation result or validated detector is asserted. Source mappings and validation limits are preserved. ATT&CK / Atomic provenance · Detection provenance.