Analysis

  • max time kernel
    92s
  • max time network
    93s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/04/2024, 09:38

General

  • Target
    2024-04-04_68ebc9ebfa633b637893225bed2265e4_virlock.exe
  • Size 292KB
  • Sample240404-ll5fcabe7t
  • SHA256 75c6f63ef775a9cdcda52373078c2491959673db9a87ee313a19ea6cf2157703
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-04_68ebc9ebfa633b637893225bed2265e4_virlock.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-04_68ebc9ebfa633b637893225bed2265e4_virlock.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2180
    • C:\Users\Admin\TqMwsggs\XmYYgUgY.exe
      "C:\Users\Admin\TqMwsggs\XmYYgUgY.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:2268
    • C:\ProgramData\IqUMQwUg\mgcsAYkE.exe
      "C:\ProgramData\IqUMQwUg\mgcsAYkE.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:2856
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\cuninst.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2956
      • C:\Users\Admin\AppData\Local\Temp\cuninst.exe
        C:\Users\Admin\AppData\Local\Temp\cuninst.exe
        3⤵
        • Executes dropped EXE
        PID:2420
    • 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
      • Modifies registry key
      PID:936
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
      2⤵
      • Modifies registry key
      PID:1504
    • 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
      • Modifies registry key
      PID:1600

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        setup.exe

        • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\setup.exe
        • Size 591KB
        • SHA256 29ee440a8c4a0d6a8ecaefdd7f8b3d2899e818c7c7ce9516c4b78e6fbe6a1429
        • MD5 SHA1 SHA512 SSDEEP

        mgcsAYkE.exe

        • Path C:\ProgramData\IqUMQwUg\mgcsAYkE.exe
        • Size 145KB
        • SHA256 97fb8c7b78cbf67aa423e9ebbb6dcede50c20d25b2a3d7da6f2b7a591bae2ba6
        • MD5 SHA1 SHA512 SSDEEP

        device.png.exe

        • Path C:\ProgramData\Microsoft\Device Stage\Device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\device.png.exe
        • Size 182KB
        • SHA256 9e0cdca0e05fc9a31727aa15ea3883eaca6df83a27b2b8a3e75d1f9de4c20b07
        • MD5 SHA1 SHA512 SSDEEP

        overlay.png.exe

        • Path C:\ProgramData\Microsoft\Device Stage\Device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\overlay.png.exe
        • Size 165KB
        • SHA256 72bc68a6499a1d8f72e1c5d4d1b690189f954672ac540a4491d656c3d073c140
        • MD5 SHA1 SHA512 SSDEEP

        superbar.png.exe

        • Path C:\ProgramData\Microsoft\Device Stage\Device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\superbar.png.exe
        • Size 180KB
        • SHA256 0b8361550f730822325e8bcd6896f0c1424c1f2c4c3ea4bace577801f4591816
        • MD5 SHA1 SHA512 SSDEEP

        background.png.exe

        • Path C:\ProgramData\Microsoft\Device Stage\Device\{8702d817-5aad-4674-9ef3-4d3decd87120}\background.png.exe
        • Size 251KB
        • SHA256 826baa8a416071a998463c1a3c43d9142fb25db6db1b15a1e82073b8955fa42b
        • MD5 SHA1 SHA512 SSDEEP

        watermark.png.exe

        • Path C:\ProgramData\Microsoft\Device Stage\Device\{8702d817-5aad-4674-9ef3-4d3decd87120}\watermark.png.exe
        • Size 158KB
        • SHA256 37f00f34c80a926e1c06d3310639382d017d224b2bc5ef9dc7364cc5e312978d
        • MD5 SHA1 SHA512 SSDEEP

        guest.bmp.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\guest.bmp.exe
        • Size 736KB
        • SHA256 6adba4788d2047ae8535b13bf8f910a9d1cccf294ea6474f83335ef6a1f0973a
        • MD5 SHA1 SHA512 SSDEEP

        user.bmp.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user.bmp.exe
        • Size 720KB
        • SHA256 e53436944c810af3fdc23a4760cd58c3ea72433272a6c6abd4cd9f8911e257aa
        • MD5 SHA1 SHA512 SSDEEP

        user.png.exe

        • Path C:\ProgramData\Microsoft\User Account Pictures\user.png.exe
        • Size 131KB
        • SHA256 7bb6a7b511452b097ef7985b7898fadc969bec0352bd74b05908688c63cf2d51
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x86.exe

        • Path C:\ProgramData\Package Cache\{33d1fd90-4274-48a1-9bc1-97e33d9c2d6f}\vcredist_x86.exe
        • Size 578KB
        • SHA256 353cd7c6170c7bc743e3d7e782a1ccbcc9f943b98b5a7a559f85376208ff3260
        • MD5 SHA1 SHA512 SSDEEP

        VC_redist.x86.exe

        • Path C:\ProgramData\Package Cache\{4d8dcf8c-a72a-43e1-9833-c12724db736e}\VC_redist.x86.exe
        • Size 766KB
        • SHA256 facbbbd58587a8f28d7bad4d6b7b2a68f797f0c4703f7aee447b12beaadd38c6
        • MD5 SHA1 SHA512 SSDEEP

        VC_redist.x64.exe

        • Path C:\ProgramData\Package Cache\{57a73df6-4ba9-4c1d-bbbb-517289ff6c13}\VC_redist.x64.exe
        • Size 774KB
        • SHA256 c2e5a96485e80b66bb77e372615078e46a4d9b2b6909b829ee8d79f54877a087
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x86.exe

        • Path C:\ProgramData\Package Cache\{61087a79-ac85-455c-934d-1fa22cc64f36}\vcredist_x86.exe
        • Size 587KB
        • SHA256 b5c1cdea422a25a4a0ea96728188e5c362d3da4c84e05eac3f37559f378190f9
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x64.exe

        • Path C:\ProgramData\Package Cache\{ca67548a-5ebe-413a-b50c-4b9ceb6d66c6}\vcredist_x64.exe
        • Size 584KB
        • SHA256 8320589573d8f78ad0b45745899c0efed410a8e3ffda3c42227c190992b693f9
        • MD5 SHA1 SHA512 SSDEEP

        vcredist_x64.exe

        • Path C:\ProgramData\Package Cache\{ef6b00ec-13e1-4c25-9064-b2f383cb8412}\vcredist_x64.exe
        • Size 595KB
        • SHA256 98d9fcc568e25fc9141406d105cf42922429bf63239db2aab0a554dabb1abaa4
        • MD5 SHA1 SHA512 SSDEEP

        windowsdesktop-runtime-6.0.25-win-x64.exe

        • Path C:\ProgramData\Package Cache\{fb0500c1-f968-4621-a48b-985b52884c49}\windowsdesktop-runtime-6.0.25-win-x64.exe
        • Size 736KB
        • SHA256 16e180d75224adb1978ace5544e0df13fe786182c15a42677d47395ad33a24af
        • MD5 SHA1 SHA512 SSDEEP

        FEQI.ico

        • Path C:\Users\Admin\AppData\Local\Temp\FEQI.ico
        • Size 4KB
        • SHA256 57e72b9591e318a17feb74efa1262e9222814ad872437094734295700f669563
        • MD5 SHA1 SHA512 SSDEEP

        SsoY.ico

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

        ZIAq.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ZIAq.exe
        • Size 151KB
        • SHA256 c6591cb655d69dfac77188ae581e90ed89067e6e248011303d2f44053cc55c69
        • MD5 SHA1 SHA512 SSDEEP

        ccUg.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ccUg.exe
        • Size 149KB
        • SHA256 781a70d3c61ec416cef07b08e89ae5875553b1ff73541e7eba1214cba881c4b5
        • MD5 SHA1 SHA512 SSDEEP

        cuninst.exe

        • Path C:\Users\Admin\AppData\Local\Temp\cuninst.exe
        • Size 140KB
        • SHA256 2ae11cc8a144df879a7be3fb6b1ce2cdce6c720a3e8c73b3a33fe120133b51b8
        • MD5 SHA1 SHA512 SSDEEP

        qggg.exe

        • Path C:\Users\Admin\AppData\Local\Temp\qggg.exe
        • Size 278KB
        • SHA256 a6d4f8b9273a451c5d6f5e1c3d3458266cfe9573ee1afece4a34f34a8a541e25
        • MD5 SHA1 SHA512 SSDEEP

        vksI.exe

        • Path C:\Users\Admin\AppData\Local\Temp\vksI.exe
        • Size 748KB
        • SHA256 d502b04cfece6b98f2102d2114c1363c33984304ffdf9247d0558ad147eb3907
        • MD5 SHA1 SHA512 SSDEEP

        XmYYgUgY.exe

        • Path C:\Users\Admin\TqMwsggs\XmYYgUgY.exe
        • Size 124KB
        • SHA256 597c8bbb72eefac2ef97825a3d41bd1605ad82cfb28ab12037494a36b55ffe62
        • MD5 SHA1 SHA512 SSDEEP

        office2016setup.exe

        • Path C:\odt\office2016setup.exe
        • Size 5.2MB
        • SHA256 ac988e0d32c144f4bda44bffe2a1d6ee4b7ce6235698ad9c2130e4898c21e84e
        • MD5 SHA1 SHA512 SSDEEP

        memory/2180-0-0x0000000000400000-0x000000000044B000-memory.dmp

        memory/2180-17-0x0000000000400000-0x000000000044B000-memory.dmp

        memory/2268-8-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/2420-38-0x00007FFA9DD90000-0x00007FFA9E851000-memory.dmp

        memory/2420-23-0x00007FFA9DD90000-0x00007FFA9E851000-memory.dmp

        memory/2420-21-0x0000000000F70000-0x0000000000F98000-memory.dmp

        memory/2856-14-0x0000000000400000-0x0000000000426000-memory.dmp