Analysis

  • max time kernel
    120s
  • max time network
    158s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/06/2026, 12:11

General

  • Target
    tsetup.6.3.6.exe
  • Size 43.2MB
  • Sample260628-pcvfkagy8v
  • SHA256 b9dd2bf54a56662308069d61dd6dac1d5a1b70e0b112588d32517fc78fbce7ed
  • MD5 SHA1 SHA512 SSDEEP TLSH

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.

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Inno Setup is an open-source installation builder for Windows applications. 3 IoCs

    Inno Setup installer

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

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 61 IoCs
  • Suspicious use of SendNotifyMessage 50 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 3 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.

  • Uses Volume Shadow Copy WMI provider

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

  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\tsetup.6.3.6.exe
    "C:\Users\Admin\AppData\Local\Temp\tsetup.6.3.6.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2056
    • C:\Users\Admin\AppData\Local\Temp\is-UEKNU.tmp\tsetup.6.3.6.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-UEKNU.tmp\tsetup.6.3.6.tmp" /SL5="$701F0,44242094,864256,C:\Users\Admin\AppData\Local\Temp\tsetup.6.3.6.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4956
      • C:\Users\Admin\AppData\Roaming\Telegram Desktop\Telegram.exe
        "C:\Users\Admin\AppData\Roaming\Telegram Desktop\Telegram.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Enumerates system info in registry
        • Modifies registry class
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:3968
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5016
    • 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:3172
  • 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:5752
  • 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:2376

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

        tsetup.6.3.6.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-UEKNU.tmp\tsetup.6.3.6.tmp
        • Size 3.5MB
        • SHA256 0c4bf5ef5d400e9db051a6d0526226da9dd5f625230711d622e8945915108bae
        • MD5 SHA1 SHA512 SSDEEP TLSH

        d3dcompiler_47.dll

        • Path C:\Users\Admin\AppData\Roaming\Telegram Desktop\modules\x86\d3d\d3dcompiler_47.dll
        • Size 3.9MB
        • SHA256 b6bb03086bf06f348a21618e5d5767aba764d07a40a2872be486b8a70d9aa1eb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Telegram.lnk

        • Path C:\Users\Admin\Desktop\Telegram.lnk
        • Size 1KB
        • SHA256 a65b34939b924acae7a858a7a8b5ea8df7355eefd91dc5f8950ffd8b8a47a837
        • MD5 SHA1 SHA512 TLSH

        memory/2056-8-0x0000000000690000-0x0000000000772000-memory.dmp

        memory/2056-42-0x0000000000690000-0x0000000000772000-memory.dmp

        memory/2056-0-0x0000000000690000-0x0000000000772000-memory.dmp

        memory/4956-41-0x0000000000DC0000-0x0000000001144000-memory.dmp

        memory/4956-30-0x0000000000DC0000-0x0000000001144000-memory.dmp

        memory/4956-14-0x0000000000DC0000-0x0000000001144000-memory.dmp

        memory/4956-12-0x0000000000DC0000-0x0000000001144000-memory.dmp

        memory/4956-9-0x0000000000DC0000-0x0000000001144000-memory.dmp

        memory/4956-10-0x00000000012C0000-0x00000000012C1000-memory.dmp

        memory/4956-6-0x00000000012C0000-0x00000000012C1000-memory.dmp

        memory/5752-144-0x0000028103C20000-0x0000028103C40000-memory.dmp

        memory/5752-132-0x00000281001E0000-0x00000281002E0000-memory.dmp

        memory/5752-180-0x00000281048A0000-0x00000281048C0000-memory.dmp

        memory/5752-145-0x0000028104050000-0x0000028104150000-memory.dmp

        memory/5752-155-0x0000028103E80000-0x0000028103EA0000-memory.dmp

        memory/5752-298-0x0000028100440000-0x0000028100623000-memory.dmp