Analysis

  • user interaction
    yes
  • max time kernel
    45s
  • max time network
    128s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    17/10/2026, 17:14

General

  • Target
    VIRUS shadow.rar
  • Size 2.9MB
  • Sample261017-vr856aay5x
  • SHA256 a3bb6c119965ee080681228ee2fdb2336c80810c9a21bef870a7853cb0682f4a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Disables Task Manager via registry modification
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 34 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Program Files\7-Zip\7zFM.exe
    "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\VIRUS shadow.rar"
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:4884
    • C:\Users\Admin\AppData\Local\Temp\7zO41383099\HighHappy.exe
      "C:\Users\Admin\AppData\Local\Temp\7zO41383099\HighHappy.exe"
      2⤵
      • Executes dropped EXE
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:296
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C vssadmin delete shadows /for=C: /all
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        PID:752
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c del /s /q "C:\Windows\System32"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4724
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k reg delete HKCR /f
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3248
        • C:\Windows\SysWOW64\reg.exe
          reg delete HKCR /f
          4⤵
          • Modifies system executable filetype association
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          PID:2852
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x00000000000004E8 0x00000000000004D8
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3508
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:4776

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          HighHappy.exe

          • Path C:\Users\Admin\AppData\Local\Temp\7zO41383099\HighHappy.exe
          • Size 82KB
          • SHA256 0f9617c86fd1a744a7185e1060b928cd05ddd63c70633dbe847d5582e60101fe
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/296-45-0x0000000075BE0000-0x0000000075C97000-memory.dmp

          memory/296-31-0x0000000075F60000-0x0000000076042000-memory.dmp

          memory/296-11-0x0000000006170000-0x0000000006202000-memory.dmp

          memory/296-12-0x00000000750C0000-0x000000007587C000-memory.dmp

          memory/296-16-0x00000000750D2000-0x00000000750D3000-memory.dmp

          memory/296-17-0x00000000759F0000-0x0000000075A45000-memory.dmp

          memory/296-42-0x0000000073060000-0x00000000730E1000-memory.dmp

          memory/296-30-0x0000000076800000-0x0000000076822000-memory.dmp

          memory/296-28-0x00000000774B0000-0x0000000077669000-memory.dmp

          memory/296-39-0x00000000761E0000-0x0000000076249000-memory.dmp

          memory/296-38-0x0000000076F70000-0x00000000771EC000-memory.dmp

          memory/296-37-0x0000000075A50000-0x0000000075BA5000-memory.dmp

          memory/296-43-0x00000000777E0000-0x0000000077DBC000-memory.dmp

          memory/296-71-0x0000000071BC0000-0x0000000071C11000-memory.dmp

          memory/296-63-0x0000000072110000-0x000000007212D000-memory.dmp

          memory/296-62-0x0000000072130000-0x0000000072140000-memory.dmp

          memory/296-61-0x0000000072150000-0x000000007215E000-memory.dmp

          memory/296-60-0x0000000072170000-0x00000000721B5000-memory.dmp

          memory/296-59-0x00000000721C0000-0x00000000721C8000-memory.dmp

          memory/296-58-0x00000000721D0000-0x00000000721EA000-memory.dmp

          memory/296-57-0x00000000721F0000-0x00000000721FB000-memory.dmp

          memory/296-56-0x0000000072200000-0x0000000072224000-memory.dmp

          memory/296-54-0x0000000072270000-0x00000000722E7000-memory.dmp

          memory/296-51-0x0000000072360000-0x00000000724D0000-memory.dmp

          memory/296-47-0x00000000776C0000-0x00000000777D5000-memory.dmp

          memory/296-46-0x0000000072620000-0x0000000072834000-memory.dmp

          memory/296-44-0x00000000729B0000-0x000000007305A000-memory.dmp

          memory/296-55-0x0000000072230000-0x000000007226D000-memory.dmp

          memory/296-53-0x00000000722F0000-0x000000007230D000-memory.dmp

          memory/296-52-0x0000000072310000-0x0000000072355000-memory.dmp

          memory/296-50-0x00000000724E0000-0x00000000724FF000-memory.dmp

          memory/296-49-0x0000000072510000-0x0000000072543000-memory.dmp

          memory/296-48-0x0000000072550000-0x0000000072616000-memory.dmp

          memory/296-9-0x00000000750D2000-0x00000000750D3000-memory.dmp

          memory/296-21-0x0000000076050000-0x00000000760CE000-memory.dmp

          memory/296-10-0x00000000004B0000-0x00000000004CA000-memory.dmp

          memory/296-41-0x0000000075E30000-0x0000000075EB1000-memory.dmp

          memory/296-35-0x0000000074FE0000-0x0000000075093000-memory.dmp

          memory/296-33-0x0000000075D10000-0x0000000075E20000-memory.dmp

          memory/296-32-0x0000000076250000-0x00000000762D5000-memory.dmp

          memory/296-40-0x0000000076A80000-0x0000000076B1E000-memory.dmp

          memory/296-24-0x0000000076EB0000-0x0000000076F69000-memory.dmp

          memory/296-23-0x0000000076150000-0x00000000761D4000-memory.dmp

          memory/296-36-0x0000000075BB0000-0x0000000075BD5000-memory.dmp

          memory/296-34-0x00000000750A0000-0x00000000750B5000-memory.dmp

          memory/296-29-0x00000000772F0000-0x000000007730A000-memory.dmp

          memory/296-27-0x0000000075880000-0x0000000075888000-memory.dmp

          memory/296-65-0x0000000071D10000-0x0000000071F4F000-memory.dmp

          memory/296-90-0x00000000750C0000-0x000000007587C000-memory.dmp

          memory/296-76-0x0000000071960000-0x00000000719FE000-memory.dmp

          memory/296-75-0x0000000071A10000-0x0000000071B09000-memory.dmp

          memory/296-74-0x0000000071B10000-0x0000000071B81000-memory.dmp

          memory/296-73-0x0000000071B90000-0x0000000071B99000-memory.dmp

          memory/296-72-0x0000000071BA0000-0x0000000071BB2000-memory.dmp

          memory/296-70-0x0000000071C20000-0x0000000071C31000-memory.dmp

          memory/296-19-0x0000000076B30000-0x0000000076DBA000-memory.dmp

          memory/296-69-0x0000000071C40000-0x0000000071C6B000-memory.dmp

          memory/296-68-0x0000000071C70000-0x0000000071CBE000-memory.dmp

          memory/296-67-0x0000000071CD0000-0x0000000071CDB000-memory.dmp

          memory/296-66-0x0000000071CE0000-0x0000000071CFE000-memory.dmp

          memory/296-64-0x0000000071F60000-0x0000000072103000-memory.dmp

          memory/296-26-0x0000000075890000-0x00000000758A4000-memory.dmp

          memory/296-25-0x0000000077670000-0x00000000776BB000-memory.dmp

          memory/296-20-0x0000000075940000-0x00000000759EC000-memory.dmp

          memory/296-22-0x0000000076830000-0x00000000768F7000-memory.dmp

          memory/2852-86-0x00000000006C0000-0x0000000000714000-memory.dmp

          memory/3248-85-0x0000000076150000-0x00000000761D4000-memory.dmp

          memory/3248-81-0x00000000007F0000-0x000000000084D000-memory.dmp

          memory/4724-79-0x0000000076B30000-0x0000000076DBA000-memory.dmp

          memory/4724-77-0x00000000007F0000-0x000000000084D000-memory.dmp