Analysis

  • max time kernel
    149s
  • max time network
    105s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250610-en
  • resource tags

    arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    05/11/2025, 09:48

General

  • Target
    4cef6738ef175fa988e9867ca19d2a12f1bf55d2cab07246010833fdb0f4d0f0(3).msi
  • Size 14.9MB
  • Sample251105-ls29kavrer
  • SHA256 4cef6738ef175fa988e9867ca19d2a12f1bf55d2cab07246010833fdb0f4d0f0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies file permissions 1 TTPs 2 IoCs
  • Themida packer 4 IoCs

    Detects Themida, an advanced Windows software protection system.

  • VMProtect packed file 4 IoCs

    Detects executables packed with VMProtect commercial packer.

  • 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 17 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 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.

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 22 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 20 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\4cef6738ef175fa988e9867ca19d2a12f1bf55d2cab07246010833fdb0f4d0f0(3).msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3004
  • 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 WriteProcessMemory
    PID:4568
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4896
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding CF38868D46FE4B40B8A24E7DFBFCA848
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5056
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\." /SETINTEGRITYLEVEL (CI)(OI)HIGH
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1860
      • C:\Windows\SysWOW64\EXPAND.EXE
        "C:\Windows\system32\EXPAND.EXE" -R files.cab -F:* files
        3⤵
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2316
      • C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\files\signed.exe
        "C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\files\signed.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5112
      • C:\Windows\SysWOW64\ICACLS.EXE
        "C:\Windows\system32\ICACLS.EXE" "C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\." /SETINTEGRITYLEVEL (CI)(OI)LOW
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:5320
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c rd /s /q "C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\files"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3764
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:4716

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e57e07e.rbs

        • Path C:\Config.Msi\e57e07e.rbs
        • Size 7KB
        • SHA256 2de90c49c4d262df8a6d5e3ac291ece207f42e38c5e85e28483580615bb64d15
        • MD5 SHA1 SHA512 SSDEEP

        files.cab

        • Path C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\files.cab
        • Size 14.6MB
        • SHA256 dd14dcbd48b63fba08e531f58bbb2c5db71cf5f545652bbcdb48aaaab8f72215
        • MD5 SHA1 SHA512 SSDEEP

        signed.exe

        • Path C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\files\signed.exe
        • Size 14.6MB
        • SHA256 5b2adba1eeb0f5e756cfc94641ab4ad2bc9c8ec61c11938537b69c31cc992540
        • MD5 SHA1 SHA512 SSDEEP

        msiwrapper.ini

        • Path C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\msiwrapper.ini
        • Size 1KB
        • SHA256 e19099c289cd99bb69d325a4a0c9d44116b60cf3e36df51a25aa444d73821d74
        • MD5 SHA1 SHA512

        msiwrapper.ini

        • Path C:\Users\Admin\AppData\Local\Temp\MW-1ba4a63d-bd50-4854-bac9-2639e5f841b3\msiwrapper.ini
        • Size 1KB
        • SHA256 d7af17e79363248f3ada441db3423ec7f689299c8b50aa2ccaaf228c8eb44682
        • MD5 SHA1 SHA512

        MSIE1E4.tmp

        • Path C:\Windows\Installer\MSIE1E4.tmp
        • Size 208KB
        • SHA256 fd622cf73ea951a6de631063aba856487d77745dd1500adca61902b8dde56fe1
        • MD5 SHA1 SHA512 SSDEEP

        metadata-2

        • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
        • Size 24.6MB
        • SHA256 ded9e9ab861dc089a419a5c837b880c310131ca1f70c5a377874b57afe817d02
        • MD5 SHA1 SHA512 SSDEEP

        {e477b180-858b-49a8-bbca-e57fe5abd121}_OnDiskSnapshotProp

        • Path \??\Volume{7808a539-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{e477b180-858b-49a8-bbca-e57fe5abd121}_OnDiskSnapshotProp
        • Size 6KB
        • SHA256 334041cf4f72389b85ecb667f69088098c75dfd7a58a93dc8c2667f18bb832b6
        • MD5 SHA1 SHA512 SSDEEP

        memory/5112-66-0x00000000008A0000-0x0000000000C46000-memory.dmp

        memory/5112-69-0x00000000008A0000-0x0000000000C46000-memory.dmp

        memory/5112-70-0x00000000027B0000-0x00000000027F1000-memory.dmp

        memory/5112-75-0x00000000008A0000-0x0000000000C46000-memory.dmp