Overview

overview

7

Static

static

3

Obsidian E...er.msi

windows10-2004-x64

7

Obsidian E...er.msi

windows11-ltsc_2024-x64

7

Analysis

  • user interaction
    yes
  • max time kernel
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/09/2026, 16:10

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Report Analysis Logs

General

  • Target
    Obsidian Ebook Reader.msi
  • Size 140.8MB
  • Sample260916-tmfglsdk6s
  • SHA256 234dbf00ce74aaeac73a7a087fd3f71cc6bf8c87235d81050ea19ac7dbeed591
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
discoveryransomware

Malware Config

Signatures

  • Loads dropped DLL 7 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 64 IoCs
  • Drops file in Windows directory 14 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.

    discovery
  • 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 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 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.

    ransomware

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I "C:\Users\Admin\AppData\Local\Temp\Obsidian Ebook Reader.msi"
    1⤵
    • Enumerates connected drives
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:5936
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5628
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B2CA5F08590F3C0BB258A329B865419C C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4492
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5864
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 87F51AEDCC8C96EB2D68CFBA77BEA29B
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:6068
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4776

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5aa441.rbs
          • Path C:\Config.Msi\e5aa441.rbs
          • Size 20KB
          • SHA256 db3f87544a5e89de93f3b6009ccd2ae0b3105a4587405aed591469c9fd43f91e
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          MSIC6B1.tmp
          • Path C:\Users\Admin\AppData\Local\Temp\MSIC6B1.tmp
          • Size 391KB
          • SHA256 fcf24b9b574ed026d3f68b7b70aa6533806ba7fc566c476ccb62e6493ac28f04
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          metadata-2
          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 e167e1cff280b09776f3f65144836fa9edf0aa7080384f66247f3d68e9f33dab
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          {53ddd861-b246-49a3-8f43-cc92e695ab82}_OnDiskSnapshotProp
          • Path \??\Volume{e35b4427-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{53ddd861-b246-49a3-8f43-cc92e695ab82}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 8e98be5944bcd71606a1ee25842190cf4a3afca8ffabf9d79b9f5509c6272073
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download