Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260617-en - resource tags
- submitted
23/06/2026, 18:27
General
- Target UR.exe
- Size 90KB
- Sample260623-w3tehsft2r
- SHA256 4db5842a6fd056a475f019a9f21dc867b369c65faae404cd7cdd6f8016c07d0f
Malware Config
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 2 IoCs
- Drops startup file 2 IoCs
- Executes dropped EXE 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 1 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.
Processes
-
C:\Users\Admin\AppData\Local\Temp\UR.exe"C:\Users\Admin\AppData\Local\Temp\UR.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exeC:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe"1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
RuntimeBroker.exe
memory/3912-15-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/3912-14-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-3-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-4-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-5-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-7-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-0-0x00007FFEDC33F000-0x00007FFEDC340000-memory.dmp
memory/5468-13-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-2-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-1-0x0000000000A10000-0x0000000000A2C000-memory.dmp
memory/5468-16-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp
memory/5468-17-0x00007FFEDC1B0000-0x00007FFEDCB54000-memory.dmp