Analysis
- max time kernel
65s - max time network
77s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260911-en - resource tags
- submitted
02/11/2026, 16:15
Errors
General
- Target XClient.exe
- Size 31KB
- Sample261102-tp63cabt9s
- SHA256 6c414c9e59f92ca7ad365000d3b43b21efb0f9fd1249628764c4864b16d725e8
Malware Config
Extracted
-
xworm
-
3.1
-
82.47.101.59:3355
-
uqQjhOpjjMz18IkL
-
Install_directory
%Temp%
-
install_file
USB.exe
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 1 IoCs
- Disables Task Manager via registry modification
- Checks computer location settings 2 TTPs 4 IoCs
Looks up country code configured in the registry, likely geofence.
- 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 7 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Drops file in System32 directory 2 IoCs
- Enumerates video capture drivers 2 TTPs 1 IoCs
Queries the legacy Video for Windows capture drivers. This is commonly abused by RATs to check for available webcams on the system before reporting to their C2.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\XClient.exe"C:\Users\Admin\AppData\Local\Temp\XClient.exe"1⤵
- Checks computer location settings
- Creates a file in the Startup directory
- Enumerates video capture drivers
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\bophol.COM"C:\Users\Admin\AppData\Local\Temp\bophol.COM"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\MBR2.exe"C:\Users\Admin\AppData\Local\Temp\MBR2.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\MatrixMBR.exe"C:\Windows\System32\MatrixMBR.exe"4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\GDI.exe"C:\Users\Admin\AppData\Local\Temp\GDI.exe"5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\MBR.exe"C:\Users\Admin\AppData\Local\Temp\MBR.exe"5⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
-
-
-
C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
-
C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x38c 0x3001⤵
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
GDI.exe
MBR.exe
MBR2.exe
TROLL2.exe
TROLL5.exe
bophol.COM
MatrixMBR.exe
memory/1360-81-0x0000000000A60000-0x0000000000AA6000-memory.dmp
memory/1516-63-0x0000000004990000-0x000000000499A000-memory.dmp
memory/1516-60-0x0000000000010000-0x00000000000C8000-memory.dmp
memory/1516-61-0x0000000004EF0000-0x0000000005496000-memory.dmp
memory/1516-62-0x00000000049E0000-0x0000000004A72000-memory.dmp
memory/2340-105-0x0000000000210000-0x0000000000218000-memory.dmp
memory/3424-13-0x0000000000800000-0x00000000008EC000-memory.dmp
memory/3424-14-0x000000001B6F0000-0x000000001B700000-memory.dmp
memory/3424-15-0x000000001B570000-0x000000001B654000-memory.dmp
memory/4180-0-0x0000000000E50000-0x0000000000E5E000-memory.dmp
memory/4180-4-0x000000001C430000-0x000000001C43A000-memory.dmp
memory/4180-3-0x000000001BAA0000-0x000000001BAB0000-memory.dmp
memory/4180-2-0x000000001BAA0000-0x000000001BAB0000-memory.dmp
memory/4468-43-0x00000000008D0000-0x000000000090A000-memory.dmp
memory/4724-82-0x0000000000400000-0x000000000041D000-memory.dmp