Hidden Executable In NTFS Alternate Data Stream

testmedium
Log-Quelle: windows · create_stream_hashAutor Florian Roth (Nextron Systems), @0xrawsecDatum 2018-06-03
01

Beschreibung

Was dies ist, in Kürze.

Detects the creation of an ADS (Alternate Data Stream) that contains an executable by looking at a non-empty Imphash

02

Tags

attack.stealthattack.s0139attack.t1564.004
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Regelquelle (YAML)

title: Hidden Executable In NTFS Alternate Data Stream
id: b69888d4-380c-45ce-9cf9-d9ce46e67821
status: test
description: Detects the creation of an ADS (Alternate Data Stream) that contains an executable by looking at a non-empty Imphash
references:
    - https://twitter.com/0xrawsec/status/1002478725605273600?s=21
author: Florian Roth (Nextron Systems), @0xrawsec
date: 2018-06-03
modified: 2023-02-10
tags:
    - attack.stealth
    - attack.s0139
    - attack.t1564.004
logsource:
    product: windows
    category: create_stream_hash
    definition: 'Requirements: Sysmon or equivalent configured with Imphash logging'
detection:
    selection:
        Hash|contains: 'IMPHASH='
    filter_main_null:
        Hash|contains: 'IMPHASH=00000000000000000000000000000000'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - This rule isn't looking for any particular binary characteristics. As legitimate installers and programs were seen embedding hidden binaries in their ADS. Some false positives are expected from browser processes and similar.
level: medium
regression_tests_path: regression_data/rules/windows/create_stream_hash/create_stream_hash_ads_executable/info.yml
04

erkennt Techniken (1)

ATT&CK-Techniken, die dies ermöglicht oder abbildet.

05

genannte Software (1)

Zugehörige Malware und Tools.

06

Referenzen

Externe Belege — Patches, Meldungen, Analysen.