Analysis

  • max time kernel
    149s
  • max time network
    94s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    06/05/2026, 01:40

General

  • Target
    ESysLauncherPremiumSetup_2.8.0_Build_143.msi
  • Size 12.3MB
  • Sample260506-b3vmcsdt2n
  • SHA256 881480752da7ceba309f95a75ce89dc34fac906702ecbe843213213017ec5ad0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 9 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 Program Files directory 28 IoCs
  • Drops file in Windows directory 26 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 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 26 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 4 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\ESysLauncherPremiumSetup_2.8.0_Build_143.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4896
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • 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:5384
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DAA93BF1EA390E0BEA3E4D12D9911E32 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:2440
      • C:\Windows\SysWOW64\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files (x86)\TokenMaster\E-Sys Launcher Premium\ReadMe.txt
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1632
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5900
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D0659D903778F43B513D2BBB852345AF
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4140
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1148

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5891eb.rbs

          • Path C:\Config.Msi\e5891eb.rbs
          • Size 15KB
          • SHA256 28ab901ef674a9a48f6dcc6b917d4762ff5aa34ac29962ad3eaa22908c650ba4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ESysLauncher.exe

          • Path C:\Program Files (x86)\TokenMaster\E-Sys Launcher Premium\ESysLauncher.exe
          • Size 4.5MB
          • SHA256 0c1c17a74e54010467915c40140a5155c02491e2f2cdaec5ca0676c7ff13a0df
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ReadMe.txt

          • Path C:\Program Files (x86)\TokenMaster\E-Sys Launcher Premium\ReadMe.txt
          • Size 2KB
          • SHA256 37e3288fb87d56ae50935fb7e8317b715c81771267ee22727839b669c72be230
          • MD5 SHA1 SHA512 TLSH

          MSIA5B.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIA5B.tmp
          • Size 216KB
          • SHA256 5ecd3ff2fb862db239babc08ffab2e380cb7663f5bb4643ce5613691c5206808
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIC53.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIC53.tmp
          • Size 375KB
          • SHA256 25b3d017d4dcce1268193fd0127cd784dec9ef4d9ce7920fce6234fabc7df215
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5891ec.msi

          • Path C:\Windows\Installer\e5891ec.msi
          • Size 12.3MB
          • SHA256 881480752da7ceba309f95a75ce89dc34fac906702ecbe843213213017ec5ad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 e77f30d65f8bc5c8d2922b9fbe104a7c7addafe46e2ca21170f4d05031dc1325
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {19031db6-b39f-4a77-b87d-2c1d95969bfe}_OnDiskSnapshotProp

          • Path \??\Volume{f5ca1e61-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{19031db6-b39f-4a77-b87d-2c1d95969bfe}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 4927b1e953221f8ac992a37322df14639b4526f0f56c63d9c7223c3aa7c9f924
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1148-36-0x0000027D3D2C0000-0x0000027D3D45A000-memory.dmp

          memory/1148-119-0x0000027D3D2C0000-0x0000027D3D45A000-memory.dmp

          memory/1632-126-0x0000000002C00000-0x0000000002C7A000-memory.dmp

          memory/2440-26-0x00000000024E0000-0x000000000255A000-memory.dmp

          memory/2440-117-0x00000000024E0000-0x000000000255A000-memory.dmp

          memory/4140-108-0x0000000002510000-0x000000000258A000-memory.dmp

          memory/4896-118-0x000002308C6C0000-0x000002308C85A000-memory.dmp

          memory/4896-24-0x000002308C6C0000-0x000002308C85A000-memory.dmp

          memory/5384-110-0x000002D1A76D0000-0x000002D1A786A000-memory.dmp

          memory/5384-31-0x000002D1A76D0000-0x000002D1A786A000-memory.dmp

          memory/5384-25-0x000002D1A76D0000-0x000002D1A786A000-memory.dmp

          memory/5900-120-0x0000028B168C0000-0x0000028B16A5A000-memory.dmp

          memory/5900-123-0x0000028B168C0000-0x0000028B16A5A000-memory.dmp