Elise Backdoor Activity


Description

Detects Elise backdoor activity used by APT32

Query · sigma

selection_other_svchost:
  Image|endswith: \Microsoft\Network\svchost.exe
selection_other_del:
  CommandLine|contains|all:
  - \Windows\Caches\NavShExt.dll
  - /c del
selection_dll_path:
  CommandLine|endswith:
  - \AppData\Roaming\MICROS~1\Windows\Caches\NavShExt.dll
  - \AppData\Roaming\Microsoft\Windows\Caches\NavShExt.dll
selection_dll_function:
  CommandLine|contains: ',Setting'
condition: 1 of selection_other_* or all of selection_dll_*

Known false positives

  • Unlikely
Raw source Elise Backdoor Activity · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified.
title: Elise Backdoor Activity
id: e507feb7-5f73-4ef6-a970-91bb6f6d744f
status: test
description: Detects Elise backdoor activity used by APT32
references:
    - https://community.rsa.com/community/products/netwitness/blog/2018/02/13/lotus-blossom-continues-asean-targeting
    - https://web.archive.org/web/20200302083912/https://www.accenture.com/t20180127T003755Z_w_/us-en/_acnmedia/PDF-46/Accenture-Security-Dragonfish-Threat-Analysis.pdf
author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
date: 2018-01-31
modified: 2023-03-09
tags:
    - attack.g0030
    - attack.g0050
    - attack.s0081
    - attack.execution
    - attack.t1059.003
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection_other_svchost:
        Image|endswith: '\Microsoft\Network\svchost.exe'
    selection_other_del:
        CommandLine|contains|all:
            - '\Windows\Caches\NavShExt.dll'
            - '/c del'
    selection_dll_path:
        CommandLine|endswith:
            - '\AppData\Roaming\MICROS~1\Windows\Caches\NavShExt.dll'
            - '\AppData\Roaming\Microsoft\Windows\Caches\NavShExt.dll'
    selection_dll_function:
        CommandLine|contains: ',Setting'
    condition: 1 of selection_other_* or all of selection_dll_*
falsepositives:
    - Unlikely
level: critical

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