Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    17/08/2026, 12:25

General

  • Target
    Installer_c2cea6.msi
  • Size 11.9MB
  • Sample260817-pl5mwszemb
  • SHA256 44da9c84a1c69a63a661485db45ac537532e9426772c4c8415bfe50dfbae0f10
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Windows directory 8 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 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\Installer_c2cea6.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1724
  • 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 WriteProcessMemory
    PID:2708
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4624
      • C:\Users\Admin\AppData\Local\Realtek\HD Audio Manager\analytics_c441.exe
        "C:\Users\Admin\AppData\Local\Realtek\HD Audio Manager\analytics_c441.exe" /nologo "C:\Users\Admin\AppData\Local\Realtek\HD Audio Manager\analytics_c441.csproj" /nr:false
        2⤵
        • Executes dropped EXE
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        PID:4992
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:4532

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58e29c.rbs

          • Path C:\Config.Msi\e58e29c.rbs
          • Size 9KB
          • SHA256 54d9c113829f4383f89f7c494f90f0404a183956f98a9826494f5e39f29b7d26
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Nancy.dll

          • Path C:\Users\Admin\AppData\Local\Realtek\HD Audio Manager\Nancy.dll
          • Size 15.7MB
          • SHA256 eb62bd2ce4de4d0902d4bf14b5de2aa7a384501234d2aaa8378460eb26499b13
          • MD5 SHA1 SHA512 SSDEEP TLSH

          analytics_c441.csproj

          • Path C:\Users\Admin\AppData\Local\Realtek\HD Audio Manager\analytics_c441.csproj
          • Size 367B
          • SHA256 9e070fcdd49691d0547f79563e38a24909605ef31f34d9bd95c9afe1738db2d3
          • MD5 SHA1 SHA512 TLSH

          analytics_c441.exe

          • Path C:\Users\Admin\AppData\Local\Realtek\HD Audio Manager\analytics_c441.exe
          • Size 246KB
          • SHA256 3d2b22b6bc51e0918263f4420e6bdf7d982d961b54176c470cac11841d1c9b33
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e58e29b.msi

          • Path C:\Windows\Installer\e58e29b.msi
          • Size 11.9MB
          • SHA256 44da9c84a1c69a63a661485db45ac537532e9426772c4c8415bfe50dfbae0f10
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 e21781b883f7b82a3e0d710e928dd5f1faa407c73a4d02b7d5b1625411dffc75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {550d5863-9a71-44ff-9b0e-59b49d92047c}_OnDiskSnapshotProp

          • Path \??\Volume{63ef4f52-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{550d5863-9a71-44ff-9b0e-59b49d92047c}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 36ac6270140ab92046dcd524cc4323378912db3370ff36e2cf2f713631c5c8c3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/4992-26-0x000001AFCFF90000-0x000001AFCFFC0000-memory.dmp

          memory/4992-25-0x000001AFEA360000-0x000001AFEA4BA000-memory.dmp

          memory/4992-29-0x000001AFEB470000-0x000001AFEC41E000-memory.dmp

          memory/4992-24-0x000001AFCFF10000-0x000001AFCFF2A000-memory.dmp

          memory/4992-23-0x000001AFCFAF0000-0x000001AFCFB2E000-memory.dmp

          memory/4992-35-0x000001AFEA4C0000-0x000001AFEA87A000-memory.dmp