Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/07/2026, 00:35

General

  • Target
    WinlockerVB6Blacksod.exe
  • Size 2.4MB
  • Sample260702-axt8zaav7z
  • SHA256 68b0e1932f3b4439865be848c2d592d5174dbdbaab8f66104a0e5b28c928ee0c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 16 IoCs
  • Badlisted process makes network request 1 IoCs

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

  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 25 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies data under HKEY_USERS 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\WinlockerVB6Blacksod.exe
    "C:\Users\Admin\AppData\Local\Temp\WinlockerVB6Blacksod.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5644
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\system32\msiexec.exe" /i "C:\Users\Admin\AppData\Roaming\Windows\Error file remover 1.0.0.0\install\0A01606\Error file remover.msi" AI_SETUPEXEPATH=C:\Users\Admin\AppData\Local\Temp\WinlockerVB6Blacksod.exe SETUPEXEDIR=C:\Users\Admin\AppData\Local\Temp\ EXE_CMD_LINE="/exenoupdates /exelang 0 /noprereqs "
      2⤵
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:4436
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Modifies WinLogon for persistence
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5924
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 73FA6A67D861D5985DE672E119F402D9
      2⤵
      • Loads dropped DLL
      • Badlisted process makes network request
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:1688
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9A55AFAE401FA9E6180034FEA40D2949 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:6452
  • C:\Program Files (x86)\Windows\Error file remover\fatalerror.exe
    "C:\Program Files (x86)\Windows\Error file remover\fatalerror.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Suspicious use of SetWindowsHookEx
    PID:5200
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x0000000000000508 0x000000000000050C
    1⤵
      PID:6764

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e58ab90.rbs

          • Path C:\Config.Msi\e58ab90.rbs
          • Size 99KB
          • SHA256 95cead6c493ecfa5d22b654d27416ef9d861b31d96ee784c18880735cf5ca601
          • MD5 SHA1 SHA512 SSDEEP TLSH

          tracking.ini

          • Path C:\Users\Admin\AppData\Local\Temp\AdvinstAnalytics\Error file remover\1.0.0.0\tracking.ini
          • Size 84B
          • SHA256 4b6f0e45f9830749a7ce4e9972a64b5e5f336b27d7411dbc661954fd2b4273c1
          • MD5 SHA1 SHA512 TLSH

          tracking.ini

          • Path C:\Users\Admin\AppData\Local\Temp\AdvinstAnalytics\Error file remover\1.0.0.0\tracking.ini
          • Size 84B
          • SHA256 84d7bc43e6aa12241710aefe9b4882d146bc9dd07cc76263321411b2061a09be
          • MD5 SHA1 SHA512 TLSH

          {A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session

          • Path C:\Users\Admin\AppData\Local\Temp\AdvinstAnalytics\Error file remover\1.0.0.0\{A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session
          • Size 4KB
          • SHA256 cb611c5628d73f8246a2327566c09b9986929990a9c1e29507cb16ad5d32e8be
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session

          • Path C:\Users\Admin\AppData\Local\Temp\AdvinstAnalytics\Error file remover\1.0.0.0\{A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session
          • Size 2KB
          • SHA256 f5d02c61f810c58a8e017dc374452ce15e49f19848f6aede456adf1d057c53fd
          • MD5 SHA1 SHA512 TLSH

          {A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session

          • Path C:\Users\Admin\AppData\Local\Temp\AdvinstAnalytics\Error file remover\1.0.0.0\{A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session
          • Size 3KB
          • SHA256 78d9a88ea0c6c9435dd3dd1c67545cb15bc2c7d7988992f2a095f3dc4dab8d6c
          • MD5 SHA1 SHA512 TLSH

          {A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session

          • Path C:\Users\Admin\AppData\Local\Temp\AdvinstAnalytics\Error file remover\1.0.0.0\{A4C6F60D-57CF-450F-8AD3-52E5A12CBCD1}.session
          • Size 3KB
          • SHA256 8cf9e831492b1886bb213c9c234ba8cb2d857f055ada657737873190156fd6da
          • MD5 SHA1 SHA512 TLSH

          Error file remover.msi

          • Path C:\Users\Admin\AppData\Roaming\Windows\Error file remover 1.0.0.0\install\0A01606\Error file remover.msi
          • Size 1010KB
          • SHA256 05c18698c3dc3b2709afd3355ad5b91a60b2121a52e5fcc474e4e47fb8e95e2a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Windows Logoff Sound.wav

          • Path C:\Users\Admin\AppData\Roaming\Windows\Error file remover 1.0.0.0\install\0A01606\Windows Logoff Sound.wav
          • Size 724KB
          • SHA256 bc26b1b97eeb45995bbd5f854db19f994cce1bb9ac9fb625eb207302dccdf344
          • MD5 SHA1 SHA512 SSDEEP TLSH

          fatalerror.exe

          • Path C:\Users\Admin\AppData\Roaming\Windows\Error file remover 1.0.0.0\install\0A01606\fatalerror.exe
          • Size 24KB
          • SHA256 e9573a3041e5a45ed8133576d199eb8d12f8922bbe47d194fef9ac166a96b9e2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          decoder.dll

          • Path C:\Users\Admin\AppData\Roaming\Windows\Error file remover 1.0.0.0\install\decoder.dll
          • Size 126KB
          • SHA256 76133e832c15aa5cbc49fb3ba09e0b8dd467c307688be2c9e85e79d3bf62c089
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAC68.tmp

          • Path C:\Windows\Installer\MSIAC68.tmp
          • Size 88KB
          • SHA256 252b7423b01ff81aea6fe7b40de91abf49f515e9c0c7b95aa982756889f8ac1a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAD15.tmp

          • Path C:\Windows\Installer\MSIAD15.tmp
          • Size 180KB
          • SHA256 a0367875b68b1699d2647a748278ebce64d5be633598580977aa126a81cf57c5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAF7D.tmp

          • Path C:\Windows\Installer\MSIAF7D.tmp
          • Size 96KB
          • SHA256 604e79fe970c5ed044517a9a35e4690ea6f7d959d21173ebef45cdd3d3a22bdd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAFDC.tmp

          • Path C:\Windows\Installer\MSIAFDC.tmp
          • Size 128KB
          • SHA256 59ff5bc12b155cc2e666bd8bc34195c3750eb742542374fc5e53fb22d11e862f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIB02B.tmp

          • Path C:\Windows\Installer\MSIB02B.tmp
          • Size 312KB
          • SHA256 9c155d4214cebda186647c035ada552963dcac8f88a6b38a23ea34f9ecd1d437
          • MD5 SHA1 SHA512 SSDEEP TLSH