Analysis
- max time kernel
150s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20251016-en - resource tags
- submitted
25/10/2025, 14:58
General
- Target Installer_v510_x64.exe
- Size 5.4MB
- Sample251025-sb6c8aew2b
- SHA256 23211cc5c51e8a3d1c0c8a99e5d726e232dd54f8dac7ca28ff11abaca76e864c
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 5 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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Themida packer 3 IoCs
Detects Themida, an advanced Windows software protection system.
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 9 IoCs
- Suspicious use of AdjustPrivilegeToken 10 IoCs
- Suspicious use of WriteProcessMemory 22 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
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C:\Users\Admin\AppData\Local\Temp\Installer_v510_x64.exe"C:\Users\Admin\AppData\Local\Temp\Installer_v510_x64.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
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -WindowStyle Hidden Add-MpPreference -ExclusionPath @('C:\Users\Admin\AppData\Local\Temp\Installer_v510_x64.exe', 'C:\Users\Admin\AppData\Local', 'C:\Users\Admin\AppData\Roaming', 'C:\Users\Admin\AppData\Local', 'C:\Users\Admin\AppData\Roaming'); Add-MpPreference -ExclusionProcess 'C:\Users\Admin\AppData\Local\Temp\Installer_v510_x64.exe'; Add-MpPreference -ExclusionProcess 'InstallModule023871.exe'; Add-MpPreference -ExclusionProcess 'InstallUtil.exe'; Add-MpPreference -ExclusionProcess 'MSBuild.exe'; Add-MpPreference -ExclusionProcess 'AddInProcess.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"powershell.exe" -WindowStyle Hidden Start-Process 'C:\Users\Admin\AppData\Local\Temp\\InstallModule023871.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\InstallModule023871.exe"C:\Users\Admin\AppData\Local\Temp\InstallModule023871.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "byudk" /XML "C:\Users\Admin\AppData\Local\Temp\65586c2242ed4a33aa24413d4d0f1b80.xml" /F4⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "IsClosed" /XML "C:\Users\Admin\AppData\Local\Temp\bf1b30e19f434d90b4d0173354b47bd4.xml" /F4⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -NoProfile Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local,C:\Users\Admin\AppData\Local\Temp\;Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\TypeId\spgnn\IsClosed.exe;Add-MpPreference -ExclusionProcess C:\Users\Admin\AppData\Local\TypeId\spgnn\IsClosed.exe;1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\TypeId\spgnn\IsClosed.exeC:\Users\Admin\AppData\Local\TypeId\spgnn\IsClosed.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\TypeId\spgnn\IsClosed.exeC:\Users\Admin\AppData\Local\TypeId\spgnn\IsClosed.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe2⤵
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
IsClosed.exe.log
powershell.exe.log
StartupProfileData-NonInteractive
StartupProfileData-NonInteractive
65586c2242ed4a33aa24413d4d0f1b80.xml
InstallModule023871.exe
__PSScriptPolicyTest_4xvkl0gw.km2.ps1
bf1b30e19f434d90b4d0173354b47bd4.xml
memory/3260-43-0x000000001D5C0000-0x000000001D6B8000-memory.dmp
memory/3260-42-0x000000001C6A0000-0x000000001C710000-memory.dmp
memory/3260-41-0x0000000000BB0000-0x0000000000C42000-memory.dmp
memory/4004-55-0x0000017E7A3B0000-0x0000017E7A426000-memory.dmp
memory/4004-54-0x0000017E79F60000-0x0000017E79FA4000-memory.dmp
memory/4616-10-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/4616-22-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/4616-19-0x000002974AEE0000-0x000002974AF02000-memory.dmp
memory/4616-11-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/5592-9-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/5592-27-0x0000000003950000-0x00000000039E4000-memory.dmp
memory/5592-25-0x00007FF8A5BB4000-0x00007FF8A5BB5000-memory.dmp
memory/5592-24-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/5592-23-0x0000000000400000-0x0000000001142000-memory.dmp
memory/5592-0-0x0000000000400000-0x0000000001142000-memory.dmp
memory/5592-8-0x0000000000400000-0x0000000001142000-memory.dmp
memory/5592-7-0x0000000000400000-0x0000000001142000-memory.dmp
memory/5592-4-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/5592-3-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/5592-2-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/5592-72-0x0000000000400000-0x0000000001142000-memory.dmp
memory/5592-73-0x00007FF8A5B50000-0x00007FF8A5E19000-memory.dmp
memory/5592-1-0x00007FF8A5BB4000-0x00007FF8A5BB5000-memory.dmp