Overview

overview

10

Static

static

3

oklasd.exe

windows10-2004-x64

10

oklasd.exe

windows10-ltsc_2021-x64

10

oklasd.exe

windows11-21h2-x64

10

oklasd.exe

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    899s
  • max time network
    566s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/07/2026, 03:47

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General

  • Target
    oklasd.exe
  • Size 3.0MB
  • Sample260728-eb63vsan2x
  • SHA256 ae323ac9f74d24765305a97d360e80eed8bb9b417f27da94e341e1dc8e430199
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarepersistenceransomwarespywareupx

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 40 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 40 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\oklasd.exe
    "C:\Users\Admin\AppData\Local\Temp\oklasd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2572
    • C:\Windows\system32\conhost.exe
      conhost.exe --algo=rx/0 --url=pool.hashvault.pro:443 --user="44nkuDevyMkUnE7Lc4kJThfZqW3zyQ62nZxB9Ca6ikxTK7SMYdLmb9eSdp3PcYDwziHMN1xyq3Yq7BNcbGXDCBhWMzEVEBX" --pass="2029" --cpu-max-threads-hint=100 --randomx-no-rdmsr --tls
      2⤵
        PID:4276
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:2164
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:3600
        • C:\Windows\explorer.exe
          explorer.exe /LOADSAVEDWINDOWS
          2⤵
          • Boot or Logon Autostart Execution: Active Setup
          • Enumerates connected drives
          • Checks SCSI registry key(s)
          • Modifies Internet Explorer settings
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          PID:4260
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:4012
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:3992
      • C:\Windows\System32\SecurityHealthHost.exe
        \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
        1⤵
          PID:5844

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              prep_Activatable Class_Hermes_perf.cache
              • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
              • Size 599B
              • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              memory/3992-180-0x000002B08FA20000-0x000002B08FB1F000-memory.dmp
              Download

              memory/3992-213-0x000002B08FA20000-0x000002B08FB1F000-memory.dmp
              Download

              memory/3992-184-0x000002B08FA20000-0x000002B08FB1F000-memory.dmp
              Download

              memory/4012-34-0x0000022D83CB0000-0x0000022D83DB0000-memory.dmp
              Download

              memory/4012-39-0x0000022D83B90000-0x0000022D83BB0000-memory.dmp
              Download

              memory/4012-33-0x0000022D83850000-0x0000022D83870000-memory.dmp
              Download

              memory/4012-25-0x0000022D80120000-0x0000022D80220000-memory.dmp
              Download

              memory/4012-48-0x0000022D840F0000-0x0000022D84110000-memory.dmp
              Download

              memory/4012-23-0x0000022D80120000-0x0000022D80220000-memory.dmp
              Download

              memory/4012-24-0x0000022D80120000-0x0000022D80220000-memory.dmp
              Download

              memory/4276-1-0x0000000140000000-0x00000001408E0000-memory.dmp
              Download

              memory/4276-3-0x0000000140000000-0x00000001408E0000-memory.dmp
              Download

              memory/4276-2-0x0000000140000000-0x00000001408E0000-memory.dmp
              Download