Analysis
- max time kernel
149s - max time network
148s - platform
windows11-21h2_x64 - resource
win11-20260911-en - resource tags
- submitted
30/09/2026, 12:50
General
- Target Legend kiiler v.exe
- Size 240KB
- Sample260930-p298baxtdx
- SHA256 cb4fcc07a8913820d0b8f5c35c7d2f35f6a3bd27dc65d88bccc4904039d6d71e
Malware Config
Extracted
-
xworm
-
3.0
-
38.tcp.vip.cpolar.cn:12402
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Install_directory
%LocalAppData%
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install_file
USB.exe
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Creates a file in the Startup directory 1 TTPs 2 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.
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 1 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 4 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 10 IoCs
- Suspicious use of WriteProcessMemory 4 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\Legend kiiler v.exe"C:\Users\Admin\AppData\Local\Temp\Legend kiiler v.exe"1⤵
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\wlanext.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'wlanext.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB6D8.tmp.bat""2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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-
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\wlanext.exeC:\Users\Admin\AppData\Local\Temp\wlanext.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\wlanext.exeC:\Users\Admin\AppData\Local\Temp\wlanext.exe1⤵
- Creates a file in the Startup directory
- Executes dropped EXE
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Replay Monitor
Loading Replay Monitor...
Downloads
powershell.exe.log
wlanext.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_lgq4h0ej.ipi.ps1
tmpB6D8.tmp.bat
wlanext.exe
memory/2368-16-0x0000028300340000-0x00000283003F3000-memory.dmp
memory/2368-26-0x0000028366290000-0x0000028366D52000-memory.dmp
memory/2368-19-0x00000283670F0000-0x00000283670FA000-memory.dmp
memory/2368-20-0x000002837FDE0000-0x000002837FDFA000-memory.dmp
memory/2368-21-0x00000283002E0000-0x00000283002E8000-memory.dmp
memory/2368-22-0x00000283002F0000-0x00000283002F6000-memory.dmp
memory/2368-23-0x000002837FDA0000-0x000002837FDAA000-memory.dmp
memory/2368-18-0x000002837FDC0000-0x000002837FDDC000-memory.dmp
memory/2368-17-0x00000283670E0000-0x00000283670EA000-memory.dmp
memory/2368-2-0x000002837FD70000-0x000002837FD92000-memory.dmp
memory/2368-15-0x00000283002C0000-0x00000283002DC000-memory.dmp
memory/4268-48-0x000000001ADE0000-0x000000001ADF0000-memory.dmp
memory/4268-0-0x00000000000B0000-0x00000000000F2000-memory.dmp
memory/4268-1-0x000000001ADE0000-0x000000001ADF0000-memory.dmp
memory/4724-55-0x0000000001630000-0x0000000001642000-memory.dmp
memory/5068-42-0x0000025CC8720000-0x0000025CC91E2000-memory.dmp