Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
09/10/2026, 19:08
General
- Target sostener.vbs
- Size 150KB
- Sample261009-xtds5sdt4t
- SHA256 92c4bb40657fc462b226f34b4f65b6c9c89e10862c8ce14068879e8e80efbf47
Malware Config
Extracted
-
xworm
-
5.0
-
medellin202156.duckdns.org:1111
-
PC4mPnTJ14VaHKWY
-
install_file
USB.exe
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 1 IoCs
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell and hide display window.
- Executes dropped EXE 1 IoCs
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 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.
- Command and Scripting Interpreter: JavaScript 1 TTPs
- 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.
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- 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 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 9 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:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\sostener.vbs"1⤵
- Executes a VBScript file via the Windows Script Host.
- Reads the TCP/IP host and domain name from the registry
-
C:\Windows\system32\wscript.exewscript "C:\Users\Admin\AppData\Local\Temp\upd_82617.js"1⤵
- Process spawned unexpected child process
- Reads the TCP/IP host and domain name from the registry
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks.exe /create /tn "MediaCacheRefresh" /xml "C:\Users\Admin\AppData\Local\Temp\rad2EF28.tmp.xml" /f > "C:\Users\Admin\AppData\Local\Temp\schtask_out.txt" 2>&12⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exeschtasks.exe /create /tn "MediaCacheRefresh" /xml "C:\Users\Admin\AppData\Local\Temp\rad2EF28.tmp.xml" /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoP -NonI -W Hidden -EP Bypass -File "C:\Users\Admin\AppData\Local\Temp\radAE9D5.tmp.ps1"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" -NoP -NonI -W Hidden -EP Bypass -File "C:\Users\Admin\AppData\Local\Temp\rad620B7.tmp.ps1"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\system32\wscript.exewscript.exe1⤵
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C:\Users\Admin\AppData\Local\Temp\rad1E474.tmp\engine.exe"C:\Users\Admin\AppData\Local\Temp\rad1E474.tmp\engine.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe2⤵
- Enumerates video capture drivers
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
4JavaScript
1PowerShell
1Visual Basic
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
StartupProfileData-NonInteractive
__PSScriptPolicyTest_wiridvrw.ihw.psm1
config.bin
engine.exe
rad2EF28.tmp.xml
rad620B7.tmp.ps1
radAE9D5.tmp.ps1
schtask_out.txt
upd_82617.js
memory/1500-8-0x0000019372D20000-0x0000019372D42000-memory.dmp
memory/4632-26-0x0000021659470000-0x000002165988E000-memory.dmp
memory/5936-24-0x00000000001E0000-0x00000000001EE000-memory.dmp
memory/5936-25-0x0000000004D30000-0x0000000004DCC000-memory.dmp
memory/5936-27-0x0000000005340000-0x00000000053A6000-memory.dmp
memory/5936-28-0x00000000065F0000-0x0000000006682000-memory.dmp
memory/5936-29-0x0000000006C50000-0x000000000720A000-memory.dmp