Overview

overview

8

Static

static

3

Piamonte-PnRQUEf.msi

windows10-2004-x64

7

Piamonte-PnRQUEf.msi

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    82s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/07/2026, 00:17

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General

  • Target
    Piamonte-PnRQUEf.msi
  • Size 6.5MB
  • Sample260709-alcjsaaz4k
  • SHA256 7d1e9ee4440a8b84a34fcc2133d1f5a2e58da611ab6bf3d73df3603595f19066
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwaredefense_evasiondiscoverypersistenceprivilege_escalationransomwarespyware

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
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Drops file in Windows directory 14 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
    persistenceprivilege_escalation
  • 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.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 64 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 8 IoCs
  • Modifies registry class 63 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 46 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 7 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:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Piamonte-PnRQUEf.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:5760
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3504
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3880
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 738EECCC5C46B7335A2CE69D6A0F389F E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1900
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\SysWOW64\cmd.exe" /c timeout /t 3 && start "" "C:\ProgramData\sib\msi\0ab445c4-a5ae-46c9-b1d4-c15918866c7a\pac.exe" /S
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4420
          • C:\Windows\SysWOW64\timeout.exe
            timeout /t 3
            4⤵
            • System Location Discovery: System Language Discovery
            • Delays execution with timeout.exe
            PID:4596
          • C:\ProgramData\sib\msi\0ab445c4-a5ae-46c9-b1d4-c15918866c7a\pac.exe
            "C:\ProgramData\sib\msi\0ab445c4-a5ae-46c9-b1d4-c15918866c7a\pac.exe" /S
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2728
            • C:\Users\Admin\AppData\Local\Temp\Piamonte-PnRH8yzAbA9krt5DMuQUEf\Sibuia.exe
              C:\Users\Admin\AppData\Local\Temp\Piamonte-PnRH8yzAbA9krt5DMuQUEf\Sibuia.exe TRUE 1 0
              5⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              PID:620
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:5728
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:5504
      • 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:5548
    • 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:2912
    • 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:1136

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59d5d7.rbs
          • Path C:\Config.Msi\e59d5d7.rbs
          • Size 4KB
          • SHA256 b88525a5cf15dc0a6e15459d9a09186ef831ffd9ed240acb90ab04916cd9672c
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          pac.exe
          • Path C:\ProgramData\sib\msi\0ab445c4-a5ae-46c9-b1d4-c15918866c7a\pac.exe
          • Size 5.5MB
          • SHA256 d78bf3c4b323c1f0ad0b59308c9f45e6f6a62c575c40078238a121609f3e4741
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          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 607B
          • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          Sibuia.exe
          • Path C:\Users\Admin\AppData\Local\Temp\Piamonte-PnRH8yzAbA9krt5DMuQUEf\Sibuia.exe
          • Size 2.2MB
          • SHA256 17dff636bd3550d764eb5991683a7a579eba56a5d89789a32b6bf1e2be6350e5
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          sib.dat
          • Path C:\Users\Admin\AppData\Local\Temp\Piamonte-PnRH8yzAbA9krt5DMuQUEf\sib.dat
          • Size 3KB
          • SHA256 7dba04a96da57a98fa4ad8fc27b5c7f9f7ab63fdb8ef2133e68023c51a17bac3
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          siblog.dll
          • Path C:\Users\Admin\AppData\Local\Temp\nsoF18B.tmp\siblog.dll
          • Size 146KB
          • SHA256 4b1c4f7b39a6c161be45e2e0e68b4f100b1cbbf91f8af2de9118476f6daa0e5a
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          MSIDD38.tmp
          • Path C:\Windows\Installer\MSIDD38.tmp
          • Size 254KB
          • SHA256 24993bae23f6c0b46e4c32e7642de82ff5e5936080ee008673323d64ee89f294
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          metadata-2
          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 f9f41f257c614b730114fc4b28187713023b313470e38c30af131d921fb2eccf
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          {e12bfbc2-fe46-45ca-a526-df2deb4cfd2c}_OnDiskSnapshotProp
          • Path \??\Volume{93100e7f-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{e12bfbc2-fe46-45ca-a526-df2deb4cfd2c}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 fa00a7a44d10936d34dafe3e148e364959bd258be3e6daaa2b1895d0e7999972
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/1136-38-0x00000117028D0000-0x00000117028F0000-memory.dmp
          Download

          memory/1136-58-0x0000011702C10000-0x0000011702C30000-memory.dmp
          Download

          memory/1136-27-0x00000117001F0000-0x00000117002F0000-memory.dmp
          Download

          memory/1136-40-0x0000011702D30000-0x0000011702E30000-memory.dmp
          Download

          memory/1136-72-0x0000011714140000-0x0000011714160000-memory.dmp
          Download

          memory/1136-28-0x00000117001F0000-0x00000117002F0000-memory.dmp
          Download

          memory/5548-194-0x000000000F8C0000-0x000000000FA2C000-memory.dmp
          Download