Analysis
- max time kernel
150s - max time network
120s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/08/2026, 13:59
Behavioral task
behavioral1
Sample
Installer_v3500_x64.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
Installer_v3500_x64.exe
Resource
win11ltsc2024-20260710-en
General
- Target Installer_v3500_x64.exe
- Size 18.1MB
- Sample260802-ralfzsthpe
- SHA256 1d5d0dfa7d49213f59f48704305762a936492c57026336a0ff56eafdf5710a48
- MD5 18b77efc3df7f3bb6a679bc1992f8e22
- SHA1 2dd37623bf004afd71de115107557c58c250fb43
- SHA512 3fae9848afc40d2a5a820fa120725bd1fb84cec11ceafa8f9ce115f0dc605b895086ccd7e46bad85c13c6a7beedd014578e21cc43816ef8667af3343204bfa80
- SSDEEP 393216:bdD4BJwgJfJAQeqKZhSMOZUa+8CGpaahVnTIZRnyxnubo:2LBk1qshIjppVanYnub
- TLSH T10C17331CA8BE884AD59C37B04A02D059D70E5F3B980B0C6F6BDB663DD41E4538E78B76
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Enumerates VirtualBox registry keys 2 TTPs 4 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest InterPartHKIAsync.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF InterPartHKIAsync.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest ioextender.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF ioextender.exe - Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Installer_v3500_x64.exe - Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions InterPartHKIAsync.exe Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions ioextender.exe - Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell and hide display window.
pid Process 1224 powershell.exe 1896 powershell.exe 1224 powershell.exe - Looks for VMWare Tools registry key 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools InterPartHKIAsync.exe Key opened \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools ioextender.exe - Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Installer_v3500_x64.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Installer_v3500_x64.exe - Executes dropped EXE 2 IoCs
pid Process 4824 InterPartHKIAsync.exe 5368 ioextender.exe -
resource yara_rule behavioral2/memory/5460-7-0x0000000000400000-0x0000000001D90000-memory.dmp themida behavioral2/memory/5460-8-0x0000000000400000-0x0000000001D90000-memory.dmp themida behavioral2/memory/5460-67-0x0000000000400000-0x0000000001D90000-memory.dmp themida - Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA Installer_v3500_x64.exe - Looks up external IP address via web service 1 TTPs 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 1 api.ipify.org 5 api.ipify.org - Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
pid Process 5460 Installer_v3500_x64.exe - 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.
pid Process 5240 cmd.exe - Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 ioextender.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString ioextender.exe - Delays execution with timeout.exe 1 IoCs
pid Process 5420 timeout.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2056 schtasks.exe - Suspicious behavior: EnumeratesProcesses 39 IoCs
pid Process 1224 powershell.exe 1224 powershell.exe 1896 powershell.exe 1896 powershell.exe 4824 InterPartHKIAsync.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe 5368 ioextender.exe - Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeDebugPrivilege 5460 Installer_v3500_x64.exe Token: SeDebugPrivilege 1224 powershell.exe Token: SeIncreaseQuotaPrivilege 1224 powershell.exe Token: SeSecurityPrivilege 1224 powershell.exe Token: SeTakeOwnershipPrivilege 1224 powershell.exe Token: SeLoadDriverPrivilege 1224 powershell.exe Token: SeSystemProfilePrivilege 1224 powershell.exe Token: SeSystemtimePrivilege 1224 powershell.exe Token: SeProfSingleProcessPrivilege 1224 powershell.exe Token: SeIncBasePriorityPrivilege 1224 powershell.exe Token: SeCreatePagefilePrivilege 1224 powershell.exe Token: SeBackupPrivilege 1224 powershell.exe Token: SeRestorePrivilege 1224 powershell.exe Token: SeShutdownPrivilege 1224 powershell.exe Token: SeDebugPrivilege 1224 powershell.exe Token: SeSystemEnvironmentPrivilege 1224 powershell.exe Token: SeRemoteShutdownPrivilege 1224 powershell.exe Token: SeUndockPrivilege 1224 powershell.exe Token: SeManageVolumePrivilege 1224 powershell.exe Token: 33 1224 powershell.exe Token: 34 1224 powershell.exe Token: 35 1224 powershell.exe Token: 36 1224 powershell.exe Token: SeIncreaseQuotaPrivilege 1224 powershell.exe Token: SeSecurityPrivilege 1224 powershell.exe Token: SeTakeOwnershipPrivilege 1224 powershell.exe Token: SeLoadDriverPrivilege 1224 powershell.exe Token: SeSystemProfilePrivilege 1224 powershell.exe Token: SeSystemtimePrivilege 1224 powershell.exe Token: SeProfSingleProcessPrivilege 1224 powershell.exe Token: SeIncBasePriorityPrivilege 1224 powershell.exe Token: SeCreatePagefilePrivilege 1224 powershell.exe Token: SeBackupPrivilege 1224 powershell.exe Token: SeRestorePrivilege 1224 powershell.exe Token: SeShutdownPrivilege 1224 powershell.exe Token: SeDebugPrivilege 1224 powershell.exe Token: SeSystemEnvironmentPrivilege 1224 powershell.exe Token: SeRemoteShutdownPrivilege 1224 powershell.exe Token: SeUndockPrivilege 1224 powershell.exe Token: SeManageVolumePrivilege 1224 powershell.exe Token: 33 1224 powershell.exe Token: 34 1224 powershell.exe Token: 35 1224 powershell.exe Token: 36 1224 powershell.exe Token: SeDebugPrivilege 1896 powershell.exe Token: SeDebugPrivilege 4824 InterPartHKIAsync.exe Token: SeDebugPrivilege 5368 ioextender.exe - Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 5460 wrote to memory of 1224 5460 Installer_v3500_x64.exe 88 PID 5460 wrote to memory of 1896 5460 Installer_v3500_x64.exe 91 PID 1896 wrote to memory of 4824 1896 powershell.exe 93 PID 4824 wrote to memory of 2056 4824 InterPartHKIAsync.exe 95 PID 4824 wrote to memory of 5368 4824 InterPartHKIAsync.exe 97 PID 4824 wrote to memory of 5240 4824 InterPartHKIAsync.exe 98 PID 5240 wrote to memory of 5420 5240 cmd.exe 101 - 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_v3500_x64.exe"C:\Users\Admin\AppData\Local\Temp\Installer_v3500_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
PID:5460 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath @('C:\Users\Admin\AppData\Local\Temp\Installer_v3500_x64.exe','C:\Users\Admin\AppData\Local','C:\Users\Admin\AppData\Roaming','C:\Users\Admin\AppData\Local','C:\Users\Admin\AppData\Roaming','RuntimeBroker.exe','InstallUtil.exe','AppLaunch.exe','dwm.exe','svchost.exe','explorer.exe','services.exe','schtasks.exe','conhost.exe'); Add-MpPreference -ExclusionProcess @('C:\Users\Admin\AppData\Local\Temp\Installer_v3500_x64.exe','RuntimeBroker.exe','InstallUtil.exe','AppLaunch.exe','dwm.exe','svchost.exe','explorer.exe','services.exe','schtasks.exe','conhost.exe','wscript.exe','PathMarker.vbs','ioextender.exe','InterPartHKIAsync.exe')"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1224
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -WindowStyle Hidden Start-Process 'C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1896 -
C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe"C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe"3⤵
- Enumerates VirtualBox registry keys
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4824 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks.exe" /Create /TN "Extended API 0136301" /TR "\"wscript.exe\" //nologo \"C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\PathMarker.vbs\"" /SC MINUTE /MO 20 /RL HIGHEST /F4⤵
- Scheduled Task/Job: Scheduled Task
PID:2056
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C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\ioextender.exe"C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\ioextender.exe"4⤵
- Enumerates VirtualBox registry keys
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5368
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\zzhwbwdb.bat""4⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:5240 -
C:\Windows\system32\timeout.exetimeout /t 3 /nobreak5⤵
- Delays execution with timeout.exe
PID:5420
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C:\Windows\system32\wscript.exe"wscript.exe"1⤵PID:5140
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 435471b87a1a97b0e29f7d5dd0878e63031511f063629d7e750852c068e7c4f5
- MD5 81b56f1dad28119d54bf23c83fc570b9
- SHA1 cb9a89a716465611149ce3c700bd60681d434faf
- SHA512 77bd4d53ca86d66d29ba662dd424e94e5cef46c6a460cbf9f8d87a40c627401c0f6d0fe30258c23ed1cf63df1a70b19288885a33c206fb85a19f12efaab61927
- TLSH T1F3216833B3DD8614C89A413A10CDAC1036B6C7DB40DECFAB7B84E655A43F699CE61160
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0hspq5wu.2fb.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- TLSH T177A02228CC303B200020C0080A000002C00B800C080C8C0220000A00B20B820002F080
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Local\Temp\zzhwbwdb.bat
- Size 266B
- SHA256 5d3dce1d2a3fca3e8a265a793e96e2c04de90571857dea4a1bd52c5a75d568d8
- MD5 68ef020e350519dc052d81072a7ba721
- SHA1 aca9f6a6790386031513b5be751be48cb9807ea2
- SHA512 e5eee308aae4d085d73add37a227585e5ad4f76bc2270ad2a86d0e904341c7a18fb5f6bf3d071b0ce99f76509ad7f581b2bbc284a76d89947c39c6242f7c8dd9
- TLSH T1CED02B05224F07C940013D7207BF10C5397D50D22D842B41674440A962CF004D19A3C5
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Roaming\ExtendedMonitor\TNC000x859\InterPartHKIAsync.exe
- Size 409KB
- SHA256 640dd656adb4e1e264ed498dbcdcdbc15d8945435c40dd9ce8b0f2b5c208cf5c
- MD5 e2b087b6221cdb7b480b49dcc066983c
- SHA1 5a57087b370c584d1d682837c1647de1c72bcbad
- SHA512 7180e1ae9826408f3f03a4162ad2bd89ecb26957a59dbc7bceb4ef83e7e6c2cfc27d252e850267e699136fd9291e21750154e51bc0e40507e66b85f994fb10a2
- SSDEEP 6144:D/bKqHA9t9hmnshI5sr8TtOH+VDbOiAM0tAsx/E4k8dAYwuZ21:DWqWInsUrjbOiAM0asWl
- TLSH T1F1943A17B5898921C1905737C8EB620077F5EA8A72F7EB4D398623C90D033FADD86697
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Roaming\ExtendedMonitor\install.dat
- Size 72B
- SHA256 d3f0675a618cd77e9720ffd0eb139d74154af228f580ac058b53f32c74444771
- MD5 938df545e8f48e62e88882276a200210
- SHA1 a4cd43127a1d9e2a7209378c2e3e15af7cebfc7a
- SHA512 899e812a521793ebc3112ecb1627c52e41dc26d84250e9c9cdf2081c83014291ea751c4c4b7fd174642b7acea491b831f3abbc6f1dfcefff69ed18a0aa30412a
- TLSH T101A0220002CEAA0E8200E82303B200CCA0232003BE8C3B088BC0CE0A30C0C00B08830A
- MD5 SHA1 SHA512 TLSH