Analysis
- max time kernel
51s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
16/05/2024, 23:04
General
- Target mkv.ps1
- Size 1.0MB
- Sample240516-22pb3adc57
- SHA256 82f7781ebf1aa649a3697ed570fc11ba0a35b810782c953c145850f314c07e21
Malware Config
Signatures
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\mkv.ps11⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Public\pisy.exe"C:\Users\Public\pisy.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Public\pisy.exe"C:\Users\Public\pisy.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\bvasdvdfsds.exe"C:\Users\Admin\AppData\Local\Temp\bvasdvdfsds.exe" 04⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\BLHisbnd.exe"C:\Users\Admin\AppData\Local\Temp\BLHisbnd.exe"5⤵
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C:\Users\Admin\AppData\Local\Temp\bvasdvdfsds.exe"C:\Users\Admin\AppData\Local\Temp\bvasdvdfsds.exe"5⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1068 -s 4806⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\dfgdvdfsds.exe"C:\Users\Admin\AppData\Local\Temp\dfgdvdfsds.exe" 04⤵
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C:\Users\Admin\AppData\Local\Temp\cvbfsds.exe"C:\Users\Admin\AppData\Local\Temp\cvbfsds.exe" 04⤵
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C:\Users\Admin\AppData\Local\Temp\bvcfsds.exe"C:\Users\Admin\AppData\Local\Temp\bvcfsds.exe" 04⤵
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C:\Windows\SysWOW64\dialer.exe"C:\Windows\system32\dialer.exe"1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1068 -ip 10681⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
BLHisbnd.exe
__PSScriptPolicyTest_jomg4uhd.f5p.ps1
bvasdvdfsds.exe
bvcfsds.exe
bvcfsds.exe
pisy.exe
memory/212-10-0x0000025F55DA0000-0x0000025F55DC2000-memory.dmp
memory/212-11-0x00007FFDB32A0000-0x00007FFDB3D61000-memory.dmp
memory/212-12-0x00007FFDB32A0000-0x00007FFDB3D61000-memory.dmp
memory/212-20-0x00007FFDB32A0000-0x00007FFDB3D61000-memory.dmp
memory/212-0-0x00007FFDB32A3000-0x00007FFDB32A5000-memory.dmp
memory/1028-89-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-77-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-5295-0x0000000008DF0000-0x0000000008E44000-memory.dmp
memory/1028-5294-0x0000000009A40000-0x0000000009FE4000-memory.dmp
memory/1028-48-0x0000000000F40000-0x000000000149A000-memory.dmp
memory/1028-49-0x0000000005EE0000-0x0000000006390000-memory.dmp
memory/1028-58-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-55-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-59-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-53-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-51-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-50-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-69-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-67-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-79-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-84-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-85-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-4951-0x0000000001DB0000-0x0000000001DFC000-memory.dmp
memory/1028-91-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-95-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-93-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-87-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-81-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-4950-0x00000000076B0000-0x000000000799C000-memory.dmp
memory/1028-75-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-73-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-71-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-65-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-63-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-61-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-97-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-101-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-103-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-110-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-107-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-105-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/1028-99-0x0000000005EE0000-0x000000000638B000-memory.dmp
memory/3620-24-0x0000000002130000-0x0000000002135000-memory.dmp
memory/3620-29-0x0000000002130000-0x0000000002135000-memory.dmp
memory/3620-23-0x0000000002120000-0x0000000002121000-memory.dmp
memory/3620-22-0x0000000077C32000-0x0000000077C33000-memory.dmp
memory/4336-28-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4336-25-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4336-31-0x0000000000400000-0x0000000000405000-memory.dmp
memory/4336-9839-0x0000000000400000-0x0000000000405000-memory.dmp
memory/4336-9838-0x0000000000400000-0x0000000000408000-memory.dmp
memory/4424-5252-0x0000000000940000-0x0000000000CA0000-memory.dmp
memory/4424-5409-0x0000000005600000-0x00000000058B8000-memory.dmp