Analysis
- user interaction
yes - max time kernel
137s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
16/09/2026, 16:07
General
- Target systemm.exe
- Size 7.2MB
- Sample260916-tk3jcssfph
- SHA256 8b8863c9714248efbb2131e82e53c30a5627c4e051c98fe758caa22f1b3985d8
Malware Config
Extracted
-
xworm
-
3.0
-
82.47.101.153:7165
-
W5UazQxWqWYqnndf
-
install_file
USB.exe
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 2 IoCs
- .NET Reactor proctector 1 IoCs
Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 26 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\systemm.exe"C:\Users\Admin\AppData\Local\Temp\systemm.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\system.exe"C:\Users\Admin\AppData\Local\system.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\tnbvij.exe"C:\Users\Admin\AppData\Local\Temp\tnbvij.exe"3⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
-
-
-
C:\Users\Admin\AppData\Local\XWorm V3.0.exe"C:\Users\Admin\AppData\Local\XWorm V3.0.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
-
-
C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
-
C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x29c 0x3041⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp2D8A.tmp
tmp2DBA.tmp
tmp2DCA.tmp
tmp2E0A.tmp
tmp2E2A.tmp
tnbvij.exe
XWorm V3.0.exe
system.exe
memory/216-47-0x0000000000720000-0x000000000076E000-memory.dmp
memory/216-48-0x00000000050E0000-0x0000000005172000-memory.dmp
memory/2340-0-0x00000000004E0000-0x0000000000C14000-memory.dmp
memory/2736-25-0x00000216BC5D0000-0x00000216BCCFA000-memory.dmp
memory/2736-30-0x00000216D75F0000-0x00000216D7600000-memory.dmp
memory/2736-27-0x00000216D9410000-0x00000216D9F26000-memory.dmp
memory/2736-26-0x00000216D75F0000-0x00000216D7600000-memory.dmp
memory/3464-34-0x0000000000E40000-0x0000000000E4A000-memory.dmp
memory/3464-31-0x000000001B2E0000-0x000000001B2F0000-memory.dmp
memory/3464-12-0x0000000000670000-0x000000000067E000-memory.dmp