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sigmamediumHunting

Potential DLL Sideloading Of Libcurl.DLL Via GUP.EXE

Detects potential DLL sideloading of "libcurl.dll" by the "gup.exe" process from an uncommon location

MITRE ATT&CK

T1574.001
defense-evasionpersistenceprivilege-escalation

Detection Query

selection:
  Image|endswith: \gup.exe
  ImageLoaded|endswith: \libcurl.dll
filter_main_notepad_plusplus:
  Image|endswith: \Notepad++\updater\GUP.exe
condition: selection and not 1 of filter_main_*

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2023-05-05

Data Sources

windowsImage Load Events

Platforms

windows

References

Tags

attack.defense-evasionattack.persistenceattack.privilege-escalationattack.t1574.001
Raw Content
title: Potential DLL Sideloading Of Libcurl.DLL Via GUP.EXE
id: e49b5745-1064-4ac1-9a2e-f687bc2dd37e
status: test
description: Detects potential DLL sideloading of "libcurl.dll" by the "gup.exe" process from an uncommon location
references:
    - https://labs.withsecure.com/publications/fin7-target-veeam-servers
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-05
tags:
    - attack.defense-evasion
    - attack.persistence
    - attack.privilege-escalation
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith: '\gup.exe'
        ImageLoaded|endswith: '\libcurl.dll'
    filter_main_notepad_plusplus:
        Image|endswith: '\Notepad++\updater\GUP.exe'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium