Analysis

  • user interaction
    yes
  • max time kernel
    898s
  • max time network
    437s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/05/2026, 10:16

General

  • Target
    ReportBuilder.msi
  • Size 18.7MB
  • Sample260508-max3kaay5k
  • SHA256 4ef187da3551411ff592f0c7c4ee8e58abc4efdf1170316601946f1e16da515b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Loads dropped DLL 8 IoCs
  • Badlisted process makes network request 1 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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 56 IoCs
  • Drops file in Windows directory 22 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.

  • Modifies data under HKEY_USERS 3 IoCs
  • Modifies registry class 53 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 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\ReportBuilder.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4292
  • 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:3176
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding FE331017E3154A68FB30FB87F5D1A387 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:396
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4676
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding C4389EA945993CDAB2A8E2AF59141B46
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2672
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4112

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          MSI44F3.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI44F3.tmp
          • Size 86KB
          • SHA256 6879b63689e0d562c8eb26d2e0bad83107bac79c2e86de9b845f096dd5b355ab
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI1A95.tmp

          • Path C:\Windows\Installer\MSI1A95.tmp
          • Size 348KB
          • SHA256 73572d0eae00e51f207ba29d25153a89982baa4612bb81904241fd2b22e67bc3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI1C0D.tmp

          • Path C:\Windows\Installer\MSI1C0D.tmp
          • Size 28KB
          • SHA256 f6e34a4550e499346f5ab1d245508f16bf765ff24c4988984b89e049ca55737f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e59190c.msi

          • Path C:\Windows\Installer\e59190c.msi
          • Size 18.7MB
          • SHA256 4ef187da3551411ff592f0c7c4ee8e58abc4efdf1170316601946f1e16da515b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 042987c690f9340999175bb5714d1d36e63c6f5271a0747300e6ea1cea2c5f75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {8918dabd-4e0b-4cd0-a1ba-4bbb4f58ef96}_OnDiskSnapshotProp

          • Path \??\Volume{e2a40a55-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{8918dabd-4e0b-4cd0-a1ba-4bbb4f58ef96}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 5a076a31d7681aa996e534b62abbd01939510a4223901d4aff6363125827426d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/396-11-0x0000000000750000-0x00000000007CE000-memory.dmp

          memory/396-135-0x0000000000750000-0x00000000007CE000-memory.dmp

          memory/2672-132-0x00000000012F0000-0x000000000136E000-memory.dmp

          memory/3176-123-0x00000221CF9E0000-0x00000221CF9EC000-memory.dmp

          memory/3176-172-0x00000221CF9E0000-0x00000221CF9EC000-memory.dmp

          memory/4292-10-0x0000025D55E60000-0x0000025D55E6C000-memory.dmp

          memory/4292-137-0x0000025D55E60000-0x0000025D55E6C000-memory.dmp