Aruba Network Service Potential DLL Sideloading — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2023-01-22 / 2023-03-15.

{
  "category": "image_load",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: c2852deb0377ae013803ebc725113b54d35b2f6bfa05c223bbab7a167566637b

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: Aruba Network Service Potential DLL Sideloading
id: 90ae0469-0cee-4509-b67f-e5efcef040f7
status: test
description: Detects potential DLL sideloading activity via the Aruba Networks Virtual Intranet Access "arubanetsvc.exe" process using DLL Search Order Hijacking
references:
    - https://twitter.com/wdormann/status/1616581559892545537?t=XLCBO9BziGzD7Bmbt8oMEQ&s=09
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-01-22
modified: 2023-03-15
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.execution
    - attack.stealth
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith: '\arubanetsvc.exe'
        ImageLoaded|endswith:
            - '\wtsapi32.dll'
            - '\msvcr100.dll'
            - '\msvcp100.dll'
            - '\dbghelp.dll'
            - '\dbgcore.dll'
            - '\wininet.dll'
            - '\iphlpapi.dll'
            - '\version.dll'
            - '\cryptsp.dll'
            - '\cryptbase.dll'
            - '\wldp.dll'
            - '\profapi.dll'
            - '\sspicli.dll'
            - '\winsta.dll'
            - '\dpapi.dll'
    filter:
        ImageLoaded|startswith:
            - 'C:\Windows\System32\'
            - 'C:\Windows\SysWOW64\'
            - 'C:\Windows\WinSxS\'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://twitter.com/wdormann/status/1616581559892545537?t=XLCBO9BziGzD7Bmbt8oMEQ&s=09