Analysis
- max time kernel
149s - max time network
148s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
11/03/2026, 03:41
General
- Target XWormClient.exe
- Size 36KB
- Sample260311-d9axmsdv6y
- SHA256 9e137d037ccb6f09f4a7c408b62934e4ac0c9ae38413a911853a793077fc6e7e
Malware Config
Extracted
-
xworm
-
5.0
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mu19rs2vmk.localto.net:1314
-
7qUxTqahutLyDxxh
-
Install_directory
%AppData%
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install_file
RuntimeBroker.exe
Signatures
- Detect Xworm Payload 2 IoCs
- Xworm
Xworm is a remote access trojan written in C#.
- Xworm family
- Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- 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 behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 9 IoCs
- Suspicious use of WriteProcessMemory 5 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\XWormClient.exe"C:\Users\Admin\AppData\Local\Temp\XWormClient.exe"1⤵
- Drops startup file
- Adds Run key to start application
- 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\XWormClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XWormClient.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- 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 -ExclusionPath 'C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- 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 'RuntimeBroker.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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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\Roaming\RuntimeBroker.exe"2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\AppData\Roaming\RuntimeBroker.exeC:\Users\Admin\AppData\Roaming\RuntimeBroker.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\RuntimeBroker.exeC:\Users\Admin\AppData\Roaming\RuntimeBroker.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\RuntimeBroker.exeC:\Users\Admin\AppData\Roaming\RuntimeBroker.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
RuntimeBroker.exe.log
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
__PSScriptPolicyTest_mxvvxilx.xfm.ps1
RuntimeBroker.exe
memory/1336-47-0x00000186B1870000-0x00000186B191F000-memory.dmp
memory/1336-48-0x00000186B1B00000-0x00000186B1B12000-memory.dmp
memory/1624-80-0x0000017B1E340000-0x0000017B1E352000-memory.dmp
memory/1624-79-0x0000017B36840000-0x0000017B368EF000-memory.dmp
memory/3080-85-0x0000000002920000-0x0000000002930000-memory.dmp
memory/3080-0-0x00000000007A0000-0x00000000007B0000-memory.dmp
memory/3080-88-0x0000000002990000-0x0000000002A3F000-memory.dmp
memory/3124-27-0x000001D91CF70000-0x000001D91CF80000-memory.dmp
memory/3124-20-0x000001D935960000-0x000001D93596A000-memory.dmp
memory/3124-25-0x000001D935CE0000-0x000001D935CE6000-memory.dmp
memory/3124-30-0x000001D935490000-0x000001D93553F000-memory.dmp
memory/3124-31-0x000001D935640000-0x000001D935652000-memory.dmp
memory/3124-24-0x000001D935CB0000-0x000001D935CB8000-memory.dmp
memory/3124-23-0x000001D935D00000-0x000001D935D1A000-memory.dmp
memory/3124-22-0x000001D935CA0000-0x000001D935CAA000-memory.dmp
memory/3124-21-0x000001D935CC0000-0x000001D935CDC000-memory.dmp
memory/3124-26-0x000001D935CF0000-0x000001D935CFA000-memory.dmp
memory/3124-1-0x000001D91CF70000-0x000001D91CF80000-memory.dmp
memory/3124-2-0x000001D91CF70000-0x000001D91CF80000-memory.dmp
memory/3124-19-0x000001D935990000-0x000001D935A43000-memory.dmp
memory/3124-18-0x000001D935970000-0x000001D93598C000-memory.dmp
memory/3124-11-0x00007FF483550000-0x00007FF483560000-memory.dmp
memory/3124-10-0x000001D91CF70000-0x000001D91CF80000-memory.dmp
memory/3124-3-0x000001D935690000-0x000001D9356B2000-memory.dmp
memory/3924-63-0x000001C6B2820000-0x000001C6B28CF000-memory.dmp
memory/3924-64-0x000001C6B2920000-0x000001C6B2932000-memory.dmp