Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    27/07/2026, 05:13

General

  • Target
    imdiskinst.exe
  • Size 536KB
  • Sample260727-fwthyahk7s
  • SHA256 11d3423f3971b4d7a2bbda538e47998be901199546b36455315f22d3fc8b8a04
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Drops file in Drivers directory 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in System32 directory 18 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Windows directory 3 IoCs
  • Executes dropped EXE 4 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.

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Modifies registry class 12 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\imdiskinst.exe
    "C:\Users\Admin\AppData\Local\Temp\imdiskinst.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\7zS8002A438\runwaitw.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS8002A438\runwaitw.exe" /64 /hide .\install.cmd
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2360
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c .\install.cmd
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4672
        • C:\Windows\system32\net.exe
          "C:\Windows\system32\net.exe" stop imdsksvc
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3380
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 stop imdsksvc
            5⤵
              PID:3372
          • C:\Windows\system32\net.exe
            "C:\Windows\system32\net.exe" stop awealloc
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4516
            • C:\Windows\system32\net1.exe
              C:\Windows\system32\net1 stop awealloc
              5⤵
                PID:912
            • C:\Windows\system32\net.exe
              "C:\Windows\system32\net.exe" stop imdisk
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:1504
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 stop imdisk
                5⤵
                  PID:4652
              • C:\Windows\system32\taskkill.exe
                "C:\Windows\system32\taskkill.exe" /F /IM imdsksvc.exe
                4⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:2672
              • C:\Windows\system32\rundll32.exe
                "C:\Windows\system32\rundll32.exe" setupapi.dll,InstallHinfSection DefaultInstall 132 .\imdisk.inf
                4⤵
                • Drops file in Drivers directory
                • Adds Run key to start application
                • Drops file in System32 directory
                • Drops file in Windows directory
                • Modifies registry class
                • Suspicious use of WriteProcessMemory
                PID:5048
                • C:\Windows\system32\runonce.exe
                  "C:\Windows\system32\runonce.exe" -r
                  5⤵
                  • Checks processor information in registry
                  • Suspicious use of WriteProcessMemory
                  PID:464
                  • C:\Windows\System32\grpconv.exe
                    "C:\Windows\System32\grpconv.exe" -o
                    6⤵
                      PID:1448
                • C:\Windows\system32\net.exe
                  net start imdsksvc
                  4⤵
                  • Suspicious use of WriteProcessMemory
                  PID:4708
                  • C:\Windows\system32\net1.exe
                    C:\Windows\system32\net1 start imdsksvc
                    5⤵
                      PID:4556
                  • C:\Windows\system32\net.exe
                    net start awealloc
                    4⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2688
                    • C:\Windows\system32\net1.exe
                      C:\Windows\system32\net1 start awealloc
                      5⤵
                        PID:1748
                    • C:\Windows\system32\net.exe
                      net start imdisk
                      4⤵
                      • Suspicious use of WriteProcessMemory
                      PID:2228
                      • C:\Windows\system32\net1.exe
                        C:\Windows\system32\net1 start imdisk
                        5⤵
                          PID:892
                      • C:\Users\Admin\AppData\Local\Temp\7zS8002A438\msgboxw.exe
                        .\msgboxw.exe "Setup finished, but drivers or services could not start. Please try to reboot the computer and then try to run the setup package again." 16 "ImDisk Virtual Disk Driver setup"
                        4⤵
                        • Executes dropped EXE
                        • System Location Discovery: System Language Discovery
                        PID:4968
                • C:\Windows\system32\imdsksvc.exe
                  C:\Windows\system32\imdsksvc.exe
                  1⤵
                  • Executes dropped EXE
                  PID:4984
                • C:\Windows\system32\grpconv.exe
                  grpconv -o
                  1⤵
                    PID:1056
                  • C:\Windows\system32\imdsksvc.exe
                    C:\Windows\system32\imdsksvc.exe
                    1⤵
                    • Executes dropped EXE
                    PID:4452

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

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                        Downloads

                        imdisk.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\7ZS800~1\cli\i386\imdisk.exe
                        • Size 54KB
                        • SHA256 2988f78ae5643c5c536171c09dba77b5dede8573cbd49e3b4e7f220062301965
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        imdisk.cpl

                        • Path C:\Users\Admin\AppData\Local\Temp\7ZS800~1\cpl\amd64\imdisk.cpl
                        • Size 126KB
                        • SHA256 728cfaf2e2ba469cd4c7129cf7b343513f0ac67af68202d41fea287995b94988
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        imdisk.inf

                        • Path C:\Users\Admin\AppData\Local\Temp\7zS8002A438\imdisk.inf
                        • Size 6KB
                        • SHA256 92fafa5a8d9b42c3752c3f151e1591253116f55f4a177a5df18aa9d4d7f7cbeb
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        install.cmd

                        • Path C:\Users\Admin\AppData\Local\Temp\7zS8002A438\install.cmd
                        • Size 2KB
                        • SHA256 ac15c08cd625cbb1005a0de77cb74335c6bc565e546bdd8b02e4fe6f63cfc59c
                        • MD5 SHA1 SHA512 TLSH

                        msgboxw.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\7zS8002A438\msgboxw.exe
                        • Size 2KB
                        • SHA256 7a18fba9c2f3ce58d643ab6d75e41407224f3ab8df24a8f1e11235c0a1278305
                        • MD5 SHA1 SHA512 TLSH

                        runwaitw.exe

                        • Path C:\Users\Admin\AppData\Local\Temp\7zS8002A438\runwaitw.exe
                        • Size 3KB
                        • SHA256 5d00d7e5c28fb950a469ebce17772a84296d9c35f8acdac0d7c3768ef05b3090
                        • MD5 SHA1 SHA512 TLSH

                        imdisk.cpl

                        • Path C:\Windows\SysWOW64\imdisk.cpl
                        • Size 114KB
                        • SHA256 631c1528807574ce20d8c890dd19bf92121cfc5945dec71186eea764e22682e5
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        imdisk.sys

                        • Path C:\Windows\System32\drivers\imdisk.sys
                        • Size 52KB
                        • SHA256 72873d35ee3a9d9ef1311bbb6fdefd2dfea47b4752a6f1904bbdc6dc51afd820
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        imdisk.exe

                        • Path C:\Windows\System32\imdisk.exe
                        • Size 54KB
                        • SHA256 3a6a94c98a4b87e59a136052c50da070c99706db3bcd54ef5b148784b21f75dd
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        imdsksvc.exe

                        • Path C:\Windows\System32\imdsksvc.exe
                        • Size 23KB
                        • SHA256 2f482b3de5e429fe5952151d25d5ef3f7dc47b65344817cc158d1929e2d19cd6
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        uninstall_imdisk.cmd

                        • Path C:\Windows\System32\uninstall_imdisk.cmd
                        • Size 1KB
                        • SHA256 7704e4df8d8e354f59bbef1fe4b5df88806659b0715b2b71be6f19d45af0750f
                        • MD5 SHA1 SHA512 TLSH