Analysis

  • max time kernel
    440s
  • max time network
    449s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260130-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260130-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    22/02/2026, 01:58

General

  • Target
    The-MALWARE-Repo-master/Trojan/Bolbi.vbs
  • Size 46KB
  • Sample260222-cdtt7sb16e
  • SHA256 ec17f950f6ee9c0c237d93bc0b766aa6e2ab458c70320b534212043128177b51
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Badlisted process makes network request 1 IoCs

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

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Disables cmd.exe use via registry modification 1 IoCs
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 64 IoCs
  • Possible privilege escalation attempt 4 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Impair Defenses: Safe Mode Boot 1 TTPs 7 IoCs
  • Modifies file permissions 1 TTPs 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks SCSI registry key(s) 3 TTPs 58 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Kills process with taskkill 1 IoCs
  • Modifies Control Panel 4 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 48 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • System policy modification 1 TTPs 31 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Trojan\Bolbi.vbs"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Local\Temp\The-MALWARE-Repo-master\Trojan\Bolbi.vbs" /elevated
      2⤵
      • UAC bypass
      • Badlisted process makes network request
      • Disables cmd.exe use via registry modification
      • Event Triggered Execution: Image File Execution Options Injection
      • Checks computer location settings
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Sets desktop wallpaper using registry
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies Control Panel
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2784
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /c C:\Users\Public\Ghostroot\KillDora.bat
        3⤵
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:4792
        • C:\Windows\System32\rundll32.exe
          C:\Windows\System32\RUNDLL32.EXE user32.dll, UpdatePerUserSystemParameters
          4⤵
            PID:1064
          • C:\Windows\system32\reg.exe
            reg delete "HKLM\System\CurrentControlSet\Control\SafeBoot\Minimal" /f
            4⤵
            • Impair Defenses: Safe Mode Boot
            PID:1040
          • C:\Windows\system32\reg.exe
            reg delete "HKLM\System\CurrentControlSet\Control\SafeBoot\Network" /f
            4⤵
              PID:776
            • C:\Windows\system32\taskkill.exe
              taskkill /f /im explorer.exe
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1576
            • C:\Windows\explorer.exe
              explorer.exe
              4⤵
              • Boot or Logon Autostart Execution: Active Setup
              • Enumerates connected drives
              • Checks SCSI registry key(s)
              • Modifies registry class
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              • Suspicious use of SetWindowsHookEx
              PID:1504
            • C:\Windows\system32\takeown.exe
              takeown /f C:\Windows\System32\
              4⤵
              • Possible privilege escalation attempt
              • Modifies file permissions
              • Suspicious use of AdjustPrivilegeToken
              PID:1336
            • C:\Windows\system32\icacls.exe
              icacls C:\Windows\System32 /Grant Users:F
              4⤵
              • Possible privilege escalation attempt
              • Modifies file permissions
              PID:1156
            • C:\Windows\system32\takeown.exe
              takeown /f C:\Windows\
              4⤵
              • Possible privilege escalation attempt
              • Modifies file permissions
              • Suspicious use of AdjustPrivilegeToken
              PID:3912
            • C:\Windows\system32\icacls.exe
              icacls C:\Windows\ /Grant Users:F
              4⤵
              • Possible privilege escalation attempt
              • Modifies file permissions
              PID:4296
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
        • Suspicious use of SetWindowsHookEx
        PID:5068
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXk0k6mrh4r2q0ct33a9wgbez0x7v9cz5y.mca
        1⤵
        • Suspicious use of SetWindowsHookEx
        PID:3956
      • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
        "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
        1⤵
        • Modifies registry class
        • Suspicious use of SetWindowsHookEx
        PID:1404

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            BOLBI.TXT

            • Path C:\USERS\ADMIN\DESKTOP\BOLBI.TXT
            • Size 29B
            • SHA256 cc2b26f9e750e05cd680ef5721d9269fe4c8d23cabf500a2ff9065b6b4f7e08c
            • MD5 SHA1 SHA512

            thumbcache_idx.db

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_idx.db
            • Size 56KB
            • SHA256 d45b031dd3ffe856bfafe9468627dd477a7da767b3cfd2efaea3384400412800
            • MD5 SHA1 SHA512 SSDEEP TLSH

            thumbcache_idx.db

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\thumbcache_idx.db
            • Size 56KB
            • SHA256 e07d4257a78ba391e24cea5ef9e938d01ff05ee807905af3fd9219c85436127d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft_AutoGenerated_{2F519BF2-C697-59F8-8F6A-1E19509CE66B}

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\Microsoft_AutoGenerated_{2F519BF2-C697-59F8-8F6A-1E19509CE66B}
            • Size 36KB
            • SHA256 813c66ce7dec4cff9c55fb6f809eab909421e37f69ff30e4acaa502365a32bd1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {1AC14E77-02E7-4E5D-B744-2EB1AE5198B7}_charmap_exe

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\{1AC14E77-02E7-4E5D-B744-2EB1AE5198B7}_charmap_exe
            • Size 36KB
            • SHA256 e0a9f5c75706dc79a44d0c890c841b2b0b25af4ee60d0a16a7356b067210038e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {6D809377-6AF0-444B-8957-A3773F02200E}_VideoLAN_VLC_VideoLAN Website_url

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\AppIconCache\100\{6D809377-6AF0-444B-8957-A3773F02200E}_VideoLAN_VLC_VideoLAN Website_url
            • Size 36KB
            • SHA256 136808af50ee73df9befd76f7aca21765782565b0095227c5a287f3be0b5ef3c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            0.0.filtertrie.intermediate.txt

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{5ac3fb13-7e39-42eb-9ad1-3cb9d2b9a06f}\0.0.filtertrie.intermediate.txt
            • Size 30KB
            • SHA256 998772a6e01abdea69cf6cc6c9dd18be6232009e341354005b8f317d55eda301
            • MD5 SHA1 SHA512 SSDEEP TLSH

            0.1.filtertrie.intermediate.txt

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{5ac3fb13-7e39-42eb-9ad1-3cb9d2b9a06f}\0.1.filtertrie.intermediate.txt
            • Size 5B
            • SHA256 8e1e6a3d56796a245d0c7b0849548932fee803bbdb03f6e289495830e017f14c
            • MD5 SHA1 SHA512

            0.2.filtertrie.intermediate.txt

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{5ac3fb13-7e39-42eb-9ad1-3cb9d2b9a06f}\0.2.filtertrie.intermediate.txt
            • Size 5B
            • SHA256 d65b6a3bf11a27a1ced1f7e98082246e40cf01289fd47fe4a5ed46c221f2f73f
            • MD5 SHA1 SHA512

            Apps.ft

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{5ac3fb13-7e39-42eb-9ad1-3cb9d2b9a06f}\Apps.ft
            • Size 41KB
            • SHA256 b8374a4dfdb67379ad2dbcbc8ac022355aa71a6f665784d510b2ff7a8df15163
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Apps.index

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{5ac3fb13-7e39-42eb-9ad1-3cb9d2b9a06f}\Apps.index
            • Size 1.0MB
            • SHA256 bf7e9ffa4733d214ab48493802e5bcdc878f8d32688c0379255a5bfdae3850d5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            AppCache134161995530608202.txt

            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache134161995530608202.txt
            • Size 83KB
            • SHA256 28bf6464a3e8ff30ec7a9a6d14d9d98667f03820633df69f78df4c6e419c73e5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            LimitResolve.ppt

            • Path C:\Users\Admin\Desktop\LimitResolve.ppt
            • Size 313KB
            • SHA256 8d7d2da6840b36743840d8c8c4720294265e56acb42b955c94b02da435a7cdc4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            PopDeny.xlsx

            • Path C:\Users\Admin\Desktop\PopDeny.xlsx
            • Size 47KB
            • SHA256 a11fb9d293f0de7c40681476e5fd71d507e24fae9b5360051b3812be1772d219
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ReceiveFind.jpg

            • Path C:\Users\Admin\Desktop\ReceiveFind.jpg
            • Size 663KB
            • SHA256 b62adb594ca6d5b3f3670d322e1aa5c0950984b367ff3b5093ac0db5c5ac18dc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            StepBlock.gif

            • Path C:\Users\Admin\Desktop\StepBlock.gif
            • Size 496KB
            • SHA256 02322b15a44e53feb51cfae8b870bc162d3d89721d19cc46a9971773ca815b9e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Slap1.vbs

            • Path C:\Users\Admin\Music\Slap1.vbs
            • Size 46KB
            • SHA256 ec17f950f6ee9c0c237d93bc0b766aa6e2ab458c70320b534212043128177b51
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Acrobat Reader DC.lnk

            • Path C:\Users\Public\Desktop\Acrobat Reader DC.lnk
            • Size 49KB
            • SHA256 84209bb60aaa11f9214c239cc737b3ecffa634df62ff94e98dc567b2a12b801f
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Firefox.lnk

            • Path C:\Users\Public\Desktop\Firefox.lnk
            • Size 48KB
            • SHA256 b4a74d6f19c97f410f3eec80540cf293528110ba2a7e714efc09de321866f246
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Google Chrome.lnk

            • Path C:\Users\Public\Desktop\Google Chrome.lnk
            • Size 49KB
            • SHA256 e3322e244ad23b14a61c2653de07f3df8701b4503e2ae521163b39353c49e23e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            VLC media player.lnk

            • Path C:\Users\Public\Desktop\VLC media player.lnk
            • Size 47KB
            • SHA256 4cf95a4089e96d8716284a68edc129b8fc99a751da1adf4bdaef79c43f9c40a0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            KillDora.bat

            • Path C:\Users\Public\Ghostroot\KillDora.bat
            • Size 482B
            • SHA256 d6e7530e3879225bc21fc17859e5b5c71414375baac27bb361fd9162f4b49e0e
            • MD5 SHA1 SHA512 TLSH

            memory/1404-29-0x000001FDF6930000-0x000001FDF6950000-memory.dmp

            memory/1404-45-0x000001FDF6950000-0x000001FDF6970000-memory.dmp

            memory/1404-44-0x000001FDF6970000-0x000001FDF6990000-memory.dmp

            memory/1404-59-0x000001FDF9520000-0x000001FDF9620000-memory.dmp

            memory/1404-143-0x000001F5F26A0000-0x000001F5F26AC000-memory.dmp

            memory/1504-11-0x00000000031F0000-0x00000000031F1000-memory.dmp

            memory/1504-127-0x000000000B060000-0x000000000B06C000-memory.dmp

            memory/2728-0-0x00000174AD0F0000-0x00000174AD0FC000-memory.dmp

            memory/2784-359019-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359013-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359017-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359018-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359016-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359015-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359014-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359020-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-359021-0x0000021000560000-0x0000021000570000-memory.dmp

            memory/2784-4-0x00000210519D0000-0x00000210519DC000-memory.dmp