Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    21/07/2026, 15:24

General

  • Target
    appstup.38680020.msi
  • Size 7.8MB
  • Sample260721-stf62sdp5x
  • SHA256 4ad53fe78fb1f39cad78d7bae563363e374375e711410caa26bbb0931e8bfb2c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 1 IoCs
  • Badlisted process makes network request 5 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in Windows directory 10 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\appstup.38680020.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:5968
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4056
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5684
    • C:\Windows\System32\MsiExec.exe
      C:\Windows\System32\MsiExec.exe -Embedding C5A1B540D7417572EEECA12BD62CBEE7 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Badlisted process makes network request
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1496
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:1652

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        MSI717E.tmp

        • Path C:\Windows\Installer\MSI717E.tmp
        • Size 7.8MB
        • SHA256 790b06bfd163f1e3484d9bd14c9f4110f77d597c719fb6482adc05b9cc7c65e1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 26.1MB
        • SHA256 e56c4373a9c566f2363c22b997e03b9946765faa91d76ed3d8e06cc31d0e58e7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        {69d03914-de71-42f5-88c6-805c9f0e523f}_OnDiskSnapshotProp

        • Path \??\Volume{c61f8367-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{69d03914-de71-42f5-88c6-805c9f0e523f}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 20cf22fb51cb0d1e930967d8fdb673e2204848424056b8507f7c9c19a3b00fd1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1496-12-0x00007FF868930000-0x00007FF868932000-memory.dmp

        memory/1496-13-0x00007FF844C00000-0x00007FF845235000-memory.dmp

        memory/1496-16-0x00007FF857BB0000-0x00007FF857BC2000-memory.dmp