Suspicious SysAidServer Child (via process_creation)

title: Suspicious SysAidServer Child (via process_creation)
id: 40f3b943-875a-5269-8811-d59d6becb9a0
status: stable
description: This rule detects anomalous child processes of SysAidServer (as seen in MERCURY threat actor intrusions)
references:
    - https://attack.mitre.org/techniques/T1210/
    - https://www.microsoft.com/security/blog/2022/08/25/mercury-leveraging-log4j-2-vulnerabilities-in-unpatched-systems-to-target-israeli-organizations/
author: Huntrule Team
date: 2026-02-28
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