Overview

overview

10

Static

static

10

skuld.exe

windows10-2004-x64

7

Analysis

  • max time kernel
    103s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/04/2025, 20:32

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General

  • Target

    skuld.exe

  • Size

    10.3MB

  • MD5

    8b844f81ee3b1f6b91f70e8e83210f5b

  • SHA1

    5e2c67f68ea2d2d1d331edd000bcb7b1d12624ea

  • SHA256

    f9bde9d5622470f983e497aa54ca8333796bbb7b1fa92d49fb8e50b05489fab6

  • SHA512

    485a868d8f6e1dbe9575644ed5a252bbc8e86bd28c6adb9090b5d31b97953db3801d6261f4ea90b3f4181265123047855790d1897909f509633c8f88decf2a23

  • SSDEEP

    98304:8lJTC3t04XErIWPjfR/dUCBA0rU0UhZEPbl:8nTC904ajfR/dUCiL6Pbl

Score
7/10
persistence

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs
    defense_evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\skuld.exe
    "C:\Users\Admin\AppData\Local\Temp\skuld.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3224
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Local\Temp\skuld.exe
      2⤵
      • Views/modifies file attributes
      PID:3288
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
    1⤵
    • Checks computer location settings
    • Suspicious use of SetWindowsHookEx
    PID:5440

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
    Filesize

    5.5MB

    MD5

    bfbecf94f5087ffba884928bf78ddf24

    SHA1

    ba34f6d04eba20d630fb92b331985e58c46f792a

    SHA256

    e9d6897364e4cd5758651cb132dcabd176ad863ecb09d8e0c3fbc9323696193e

    SHA512

    3321e295fbd601e433e43612c44e4237c19add0d5a6f3116c8ad809e29fd0e15f189d039c561a85d87ed3b071aa341069fb0d97c696bcd7d1f41be42a1bcd01e

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