Overview

overview

10

Static

static

10

dnsbench 2023.exe

windows10-2004-x64

10

dnsbench 2023.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    675s
  • max time network
    665s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/08/2026, 15:55

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General

  • Target
    dnsbench 2023.exe
  • Size 206KB
  • Sample260822-tc6wtawdld
  • SHA256 ab62c85839ed10ba628bfaa53f0c8fae0167524204e86a6bc080bead4d8fc709
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwaredefense_evasiondiscoverymofksyspersistenceransomwarespywareworm

Malware Config

Signatures

  • Family: Mofksys

    Mofksys is a worm written in VisualBasic.

    wormmofksys
  • Detects Mofksys worm 5 IoCs
  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
    persistence
  • Modifies visibility of hidden/system files in Explorer 2 TTPs 2 IoCs
    defense_evasion
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 11 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Executes dropped EXE 7 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Windows directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 20 IoCs

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

    discovery
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 56 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 21 IoCs
  • Suspicious use of WriteProcessMemory 20 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.

    persistence
  • Uses Volume Shadow Copy WMI provider

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

    ransomware
  • Uses Volume Shadow Copy service COM API

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\dnsbench 2023.exe
    "C:\Users\Admin\AppData\Local\Temp\dnsbench 2023.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5112
    • C:\Users\Admin\AppData\Local\icsys.icn.exe
      C:\Users\Admin\AppData\Local\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2092
      • \??\c:\windows\system\explorer.exe
        c:\windows\system\explorer.exe
        3⤵
        • Modifies WinLogon for persistence
        • Modifies visibility of hidden/system files in Explorer
        • Boot or Logon Autostart Execution: Active Setup
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4088
        • \??\c:\windows\system\spoolsv.exe
          c:\windows\system\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4748
          • \??\c:\windows\system\svchost.exe
            c:\windows\system\svchost.exe
            5⤵
            • Modifies WinLogon for persistence
            • Modifies visibility of hidden/system files in Explorer
            • Boot or Logon Autostart Execution: Active Setup
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in Windows directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4500
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:5208
            • C:\Windows\SysWOW64\at.exe
              at 16:58 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:5820
            • C:\Windows\SysWOW64\at.exe
              at 16:59 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:1704
            • C:\Windows\SysWOW64\at.exe
              at 17:00 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:2612
            • C:\Windows\SysWOW64\at.exe
              at 17:01 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:3512
            • C:\Windows\SysWOW64\at.exe
              at 17:02 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4436
            • C:\Windows\SysWOW64\at.exe
              at 17:03 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:3324
            • C:\Windows\SysWOW64\at.exe
              at 17:04 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:3952
            • C:\Windows\SysWOW64\at.exe
              at 17:05 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:5792
            • C:\Windows\SysWOW64\at.exe
              at 17:06 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:468
            • C:\Windows\SysWOW64\at.exe
              at 17:07 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:4116
            • C:\Windows\SysWOW64\at.exe
              at 17:08 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:2876
            • C:\Windows\SysWOW64\at.exe
              at 17:09 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
              • System Location Discovery: System Language Discovery
              PID:908
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:2956
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3700
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5940
        • C:\Users\Admin\AppData\Roaming\mrsys.exe
          "C:\Users\Admin\AppData\Roaming\mrsys.exe" MR
          3⤵
          • Modifies WinLogon for persistence
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2720
          • \??\c:\windows\system\explorer.exe
            c:\windows\system\explorer.exe
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:4604
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3496
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3816
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
      1⤵
        PID:3948
      • C:\Windows\System32\SecurityHealthHost.exe
        \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
        1⤵
          PID:1904

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              prep_Activatable Class_Hermes_perf.cache
              • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
              • Size 599B
              • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              icsys.icn.exe
              • Path C:\Users\Admin\AppData\Local\icsys.icn.exe
              • Size 206KB
              • SHA256 3f3d9f696efad000cbe73e8580a4f334a8d7293848b99de0fc7ebe8510b7f127
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              mrsys.exe
              • Path C:\Users\Admin\AppData\Roaming\mrsys.exe
              • Size 206KB
              • SHA256 36951bbfa1fd1ce7ff2a0d3dd9bf91b6f99177f4dbc0eb34de19480eef280657
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              explorer.exe
              • Path C:\Windows\System\explorer.exe
              • Size 206KB
              • SHA256 6c86030e72b7702bdd3de2bafc41f31c64917532eeda04855f5986f429466703
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              spoolsv.exe
              • Path C:\Windows\System\spoolsv.exe
              • Size 206KB
              • SHA256 9234c230a4bdef52a5b817a3fe6941f757e8a65361232fa6a9a2aa01325f2b62
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              svchost.exe
              • Path C:\Windows\System\svchost.exe
              • Size 206KB
              • SHA256 ff03e3d9448e22835fa782cc081ec044de802ee0f9ef2c9a3aa018be202caba3
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/3496-71-0x0000018081C80000-0x0000018081CA0000-memory.dmp
              Download

              memory/3496-57-0x00000180801E0000-0x00000180802E0000-memory.dmp
              Download

              memory/3496-65-0x0000018081E80000-0x0000018081F80000-memory.dmp
              Download

              memory/3496-64-0x0000018081A40000-0x0000018081A60000-memory.dmp
              Download

              memory/3496-58-0x00000180801E0000-0x00000180802E0000-memory.dmp
              Download

              memory/3496-56-0x00000180801E0000-0x00000180802E0000-memory.dmp
              Download

              memory/3496-241-0x0000018097900000-0x0000018097B9E000-memory.dmp
              Download

              memory/3496-102-0x0000018094700000-0x0000018094720000-memory.dmp
              Download

              memory/3816-242-0x0000017CD83F0000-0x0000017CD868E000-memory.dmp
              Download