Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/08/2026, 13:02

General

  • Target
    c3f8ebc9cfb7ebe1ebbe3a4210753b271fecf73392fef98519b823a3e7c056c7.msi
  • Size 1.6MB
  • Sample260812-p9wpwsvxav
  • SHA256 c3f8ebc9cfb7ebe1ebbe3a4210753b271fecf73392fef98519b823a3e7c056c7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Brute Ratel C4

    A customized command and control framework for red teaming and adversary simulation.

  • Detect BruteRatel badger 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 5 IoCs
  • 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 16 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 3 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\c3f8ebc9cfb7ebe1ebbe3a4210753b271fecf73392fef98519b823a3e7c056c7.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2168
  • 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:4460
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5648
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 8F33194EF4B28E9FC084BF3C6A9B5C59
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:820
    • C:\Windows\Installer\MSI84FA.tmp
      "C:\Windows\Installer\MSI84FA.tmp" /DontWait C:/Windows/System32/rundll32.exe C:\Users\Admin\AppData\Roaming\trezid.dll, NxReleasePMap
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5196
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:5412
  • C:\Windows\System32\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\trezid.dll, NxReleasePMap
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    PID:1752

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e597a79.rbs

        • Path C:\Config.Msi\e597a79.rbs
        • Size 1KB
        • SHA256 1df0ee4bbaf91e9abf0741d49edc7ce24202beebe92c4dea7b09645660a7d077
        • MD5 SHA1 SHA512 TLSH

        trezid.dll

        • Path C:\Users\Admin\AppData\Roaming\trezid.dll
        • Size 664KB
        • SHA256 6ab1bee44804b0821933c7b20bbdc92deb6a21fd587a51d43761ba1500c2149d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI7CB8.tmp

        • Path C:\Windows\Installer\MSI7CB8.tmp
        • Size 436KB
        • SHA256 426e6cf199a8268e8a7763ec3a4dd7add982b28c51d89ebea90ca792cbae14dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSI84FA.tmp

        • Path C:\Windows\Installer\MSI84FA.tmp
        • Size 389KB
        • SHA256 1e0e63b446eecf6c9781c7d1cae1f46a3bb31654a70612f71f31538fb4f4729a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 26.1MB
        • SHA256 a76dda40a3d22c758fb7c05b3cf5d075f9825cde1344cb0edc83e7f2f604e490
        • MD5 SHA1 SHA512 SSDEEP TLSH

        {3f8b6577-ff23-4aec-9475-386a99c1f51b}_OnDiskSnapshotProp

        • Path \??\Volume{cb180e94-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{3f8b6577-ff23-4aec-9475-386a99c1f51b}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 d9d4f725bdc407533ccd08a48ae45ca8d2885d823e01bb5a8e6cffffb9d19e2f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1752-40-0x000000026E7A0000-0x000000026E7EA000-memory.dmp

        memory/1752-39-0x000000026E7A0000-0x000000026E7EA000-memory.dmp

        memory/1752-41-0x000001DB51150000-0x000001DB5119C000-memory.dmp

        memory/1752-50-0x000001DB51150000-0x000001DB5119C000-memory.dmp