Resubmissions

28/01/2024, 15:06

240128-sg3jhsdhgm6

28/01/2024, 15:00

240128-sdn7qacba76

26/01/2024, 12:16

240126-pfs2xaegbk10

26/01/2024, 12:02

240126-n7p9nadbb21

17/01/2024, 19:57

240117-yn88jadfbj5

17/01/2024, 19:56

240117-ynp5naebg91

16/01/2024, 18:32

240116-w6l5lshdb76

Analysis

  • max time kernel
    133s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2024, 15:00

General

  • Target
    npp.8.6.portable.x64/updater/GUP.exe
  • Size 818KB
  • Sample240128-sdn7qacba7
  • SHA256 8038960c66ec29e9ee0f027491c8349a158025faee39d069219b5a3297134197
  • MD5 SHA1 SHA512 SSDEEP
Score
6/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\npp.8.6.portable.x64\updater\GUP.exe
    "C:\Users\Admin\AppData\Local\Temp\npp.8.6.portable.x64\updater\GUP.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4284
    • C:\Users\Admin\AppData\Local\Temp\npp.8.6.2.Installer.exe
      "C:\Users\Admin\AppData\Local\Temp\npp.8.6.2.Installer.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:3188

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        npp.8.6.2.Installer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\npp.8.6.2.Installer.exe
        • Size 4.5MB
        • SHA256 9126e76c155f2535afbffd10fb2a9109a65c789540c434e03cf3a9c1e7df4833
        • MD5 SHA1 SHA512 SSDEEP

        InstallOptions.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsm9A2.tmp\InstallOptions.dll
        • Size 15KB
        • SHA256 c7fef6457989d97fecc0616a69947927da9d8c493f7905dc8475c748f044f3cf
        • MD5 SHA1 SHA512 SSDEEP

        LangDLL.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsm9A2.tmp\LangDLL.dll
        • Size 5KB
        • SHA256 18e8b40ba22c7a1687bd16e8d585380bc2773fff5002d7d67e9485fcc0c51026
        • MD5 SHA1 SHA512 SSDEEP

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsm9A2.tmp\System.dll
        • Size 12KB
        • SHA256 8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
        • MD5 SHA1 SHA512 SSDEEP

        ioSpecial.ini

        • Path C:\Users\Admin\AppData\Local\Temp\nsm9A2.tmp\ioSpecial.ini
        • Size 1KB
        • SHA256 64d733c76eefe2ac2811be9af4b249322cadaf0d4fcbfe0a7b08c485548dfdf7
        • MD5 SHA1 SHA512