Analysis

  • max time kernel
    148s
  • max time network
    114s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/08/2026, 00:10

General

  • Target
    2026-08-01_9dce690fe290bc8d4bfa970789f0dde2_elex_virlock.exe
  • Size 596KB
  • Sample260802-af667sag53
  • SHA256 ac1e51d920c236d54c1f13c89f0ae686d2b483fcbce6dc962be52893351c5eb1
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Nabucur

    Nabucur is a ransomware first seen in 2015.

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-01_9dce690fe290bc8d4bfa970789f0dde2_elex_virlock.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-01_9dce690fe290bc8d4bfa970789f0dde2_elex_virlock.exe"
    1⤵
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2960
    • C:\Users\Admin\dWEkQIAg\cCwoksEU.exe
      "C:\Users\Admin\dWEkQIAg\cCwoksEU.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      PID:760
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 760 -s 1244
        3⤵
        • Program crash
        PID:1100
    • C:\ProgramData\twUMoEgU\WSwswQAM.exe
      "C:\ProgramData\twUMoEgU\WSwswQAM.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      PID:4960
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\setup.exe
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4148
      • C:\Users\Admin\AppData\Local\Temp\setup.exe
        C:\Users\Admin\AppData\Local\Temp\setup.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2508
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1
      2⤵
      • Modifies visibility of file extensions in Explorer
      • System Location Discovery: System Language Discovery
      • Modifies registry key
      PID:4684
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies registry key
      PID:2360
    • C:\Windows\SysWOW64\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f
      2⤵
      • UAC bypass
      • System Location Discovery: System Language Discovery
      • Modifies registry key
      PID:824
  • C:\ProgramData\twUMoEgU\WSwswQAM.exe
    C:\ProgramData\twUMoEgU\WSwswQAM.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    PID:4596
  • C:\Users\Admin\dWEkQIAg\cCwoksEU.exe
    C:\Users\Admin\dWEkQIAg\cCwoksEU.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    PID:4136
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 760 -ip 760
    1⤵
      PID:4804

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          WSwswQAM.exe

          • Path C:\ProgramData\twUMoEgU\WSwswQAM.exe
          • Size 139KB
          • SHA256 ba92c7704edab5e36e66036cc9bb53f9e5fc29bb9be08bfc993b83b63ba764a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          AUgc.exe

          • Path C:\Users\Admin\AppData\Local\Temp\AUgc.exe
          • Size 767KB
          • SHA256 adf85b395c56a34ce6f5bbeaf54d76324800cfee98b2945c17171e2d77841728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CMoG.exe

          • Path C:\Users\Admin\AppData\Local\Temp\CMoG.exe
          • Size 153KB
          • SHA256 bf9b2789a6cb73150898693ba3c7ebe8cabd2151bf11f995805fe8615bcd91fe
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CUkQ.ico

          • Path C:\Users\Admin\AppData\Local\Temp\CUkQ.ico
          • Size 4KB
          • SHA256 701a17a9ee5c9340bae4f0810f103d1f0ca5c03141e0da826139d5b7397a6fb3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CYYe.exe

          • Path C:\Users\Admin\AppData\Local\Temp\CYYe.exe
          • Size 142KB
          • SHA256 f10fcf66bff0d5f15a15f75ffc812cd8c4cbfb1d21f01d59c7f749577ab2fcfa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          EwUs.exe

          • Path C:\Users\Admin\AppData\Local\Temp\EwUs.exe
          • Size 591KB
          • SHA256 ffbaf61512801998a2b89306d9e99196e86a0d8bd8e6008fda568269f6e48c5a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          GgYe.exe

          • Path C:\Users\Admin\AppData\Local\Temp\GgYe.exe
          • Size 747KB
          • SHA256 25eccbf27897a3462766756a554fda96e06ac0a3e932a6f925e65e15b8e3d0d6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          GsII.exe

          • Path C:\Users\Admin\AppData\Local\Temp\GsII.exe
          • Size 134KB
          • SHA256 861d1c644793696c99a762affddd35da07e6921325c6692da2c719773c24e031
          • MD5 SHA1 SHA512 SSDEEP TLSH

          GwQS.exe

          • Path C:\Users\Admin\AppData\Local\Temp\GwQS.exe
          • Size 134KB
          • SHA256 bd256721d56988080526884cc46d648cc5098544b1bef48cb8436e4cbe445372
          • MD5 SHA1 SHA512 SSDEEP TLSH

          KIAe.exe

          • Path C:\Users\Admin\AppData\Local\Temp\KIAe.exe
          • Size 250KB
          • SHA256 8b818e0b10d9875040d8bcaa1c532cf500b93dae733fc506f1f293b71dc5bea2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          OIYI.exe

          • Path C:\Users\Admin\AppData\Local\Temp\OIYI.exe
          • Size 161KB
          • SHA256 7751d6be0e4055e57fb913bad794b68f1e0ce237de8f44e5c270e7ed3b0559e8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          OYse.exe

          • Path C:\Users\Admin\AppData\Local\Temp\OYse.exe
          • Size 513KB
          • SHA256 2ed9949c0b6e2ee8b940d6c17b737520eaada4b5a54c1d571f7da0b5ce57c8a9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          UUsw.exe

          • Path C:\Users\Admin\AppData\Local\Temp\UUsw.exe
          • Size 149KB
          • SHA256 1aeeee96553b70cc3285550ad37521fbda49dd9ee125c7d169fbd47e58e890b6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          UwIO.exe

          • Path C:\Users\Admin\AppData\Local\Temp\UwIO.exe
          • Size 138KB
          • SHA256 9d28ae5de4d8f8f73fe6665d105e2ca6fd335e72a3382c2091e57c7310c05336
          • MD5 SHA1 SHA512 SSDEEP TLSH

          WYIi.exe

          • Path C:\Users\Admin\AppData\Local\Temp\WYIi.exe
          • Size 598KB
          • SHA256 d7f34e574d81882e2f0c9740bb01debd631c471910c25811bd5dc3e095a36a4a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          akEq.exe

          • Path C:\Users\Admin\AppData\Local\Temp\akEq.exe
          • Size 165KB
          • SHA256 8dc7f0458db11095a18fb8c64c61df41607cf5cbbd67dd8fa06bbbf6d21fabcc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          awgS.exe

          • Path C:\Users\Admin\AppData\Local\Temp\awgS.exe
          • Size 736KB
          • SHA256 edf14b84414c4dc42a9c949db6845e7b456407810e7a59e62ba29c9b9879a036
          • MD5 SHA1 SHA512 SSDEEP TLSH

          awwC.ico

          • Path C:\Users\Admin\AppData\Local\Temp\awwC.ico
          • Size 4KB
          • SHA256 e4c00332694cb4a7fdbc6dc19cd1eef271dff84d8a0a601e70f48e597351cf82
          • MD5 SHA1 SHA512 SSDEEP TLSH

          cMsW.exe

          • Path C:\Users\Admin\AppData\Local\Temp\cMsW.exe
          • Size 148KB
          • SHA256 788f98e42752c5ee41b1a10bc6c48027ee99fa0f6297f5f60cf986abc6980632
          • MD5 SHA1 SHA512 SSDEEP TLSH

          coMG.exe

          • Path C:\Users\Admin\AppData\Local\Temp\coMG.exe
          • Size 180KB
          • SHA256 aada65f77b8d06f88d41f547f70482e5391da77e55e0a6d5627f982580433570
          • MD5 SHA1 SHA512 SSDEEP TLSH

          kAwg.exe

          • Path C:\Users\Admin\AppData\Local\Temp\kAwg.exe
          • Size 140KB
          • SHA256 0d5e1042ffb4e1ac7468bdd7f7df35741db48a19af92f3d435233acdb940e2cc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          oAYS.exe

          • Path C:\Users\Admin\AppData\Local\Temp\oAYS.exe
          • Size 763KB
          • SHA256 5e3c1f2abddc541a3f54dcb88e40cf4961717b62a8abc33d591364cf2c8438b3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          oMwE.exe

          • Path C:\Users\Admin\AppData\Local\Temp\oMwE.exe
          • Size 538KB
          • SHA256 959b7b656cf2e8c69b051da5179add50d2c74f61717e7d00de33ae9da4b95033
          • MD5 SHA1 SHA512 SSDEEP TLSH

          setup.exe

          • Path C:\Users\Admin\AppData\Local\Temp\setup.exe
          • Size 453KB
          • SHA256 d2893c55259772b554cb887d3e2e1f9c67f5cd5abac2ab9f4720dec507cdd290
          • MD5 SHA1 SHA512 SSDEEP TLSH

          cCwoksEU.exe

          • Path C:\Users\Admin\dWEkQIAg\cCwoksEU.exe
          • Size 146KB
          • SHA256 8b0d04e81aa4b9e1690459756e4cdd10398b17da187fcdd8af47ef67d703f8c0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          f.inf

          • Path C:\Users\Admin\f.inf
          • Size 6KB
          • SHA256 b324b01585722cabe06579111afec91be80871bd0d18a5360a6deaafe007f67e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/760-9-0x0000000000400000-0x0000000000426000-memory.dmp

          memory/760-305-0x0000000000400000-0x0000000000426000-memory.dmp

          memory/2960-20-0x0000000000400000-0x0000000000497000-memory.dmp

          memory/2960-0-0x0000000000400000-0x0000000000497000-memory.dmp

          memory/4136-308-0x0000000000400000-0x0000000000426000-memory.dmp

          memory/4596-307-0x0000000000400000-0x0000000000424000-memory.dmp

          memory/4960-17-0x0000000000400000-0x0000000000424000-memory.dmp

          memory/4960-306-0x0000000000400000-0x0000000000424000-memory.dmp