Analysis
- max time kernel
86s - max time network
88s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
02/04/2023, 00:58
General
- Target EPSONResetterPH.exe
- Size 8.8MB
- Sample230402-bbwqcafb3s
- SHA256 82439c65507183d1b2a3bd6ff94cec4bc5c700d100e6c16068d53d0f4c4c8c3e
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Loads dropped DLL 2 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Drops file in System32 directory 11 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\EPSONResetterPH.exe"C:\Users\Admin\AppData\Local\Temp\EPSONResetterPH.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Checks whether UAC is enabled
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
-
C:\Windows\system32\mspaint.exe"C:\Windows\system32\mspaint.exe" "C:\Users\Admin\Desktop\SelectTrace.png" /ForceBootstrapPaint3D1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s DsSvc1⤵
- Drops file in System32 directory
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
evbD324.tmp
evbD374.tmp
memory/3356-153-0x00000204BD570000-0x00000204BD580000-memory.dmp
memory/3356-172-0x00000204C6210000-0x00000204C6211000-memory.dmp
memory/3356-171-0x00000204C6210000-0x00000204C6211000-memory.dmp
memory/3356-170-0x00000204C6210000-0x00000204C6211000-memory.dmp
memory/3356-169-0x00000204C6210000-0x00000204C6211000-memory.dmp
memory/3356-168-0x00000204C6180000-0x00000204C6181000-memory.dmp
memory/3356-166-0x00000204C6180000-0x00000204C6181000-memory.dmp
memory/3356-164-0x00000204C6100000-0x00000204C6101000-memory.dmp
memory/3356-157-0x00000204BD5B0000-0x00000204BD5C0000-memory.dmp
memory/4444-143-0x0000000008470000-0x000000000848B000-memory.dmp
memory/4444-151-0x0000000010000000-0x000000001001A000-memory.dmp
memory/4444-152-0x0000000008470000-0x000000000848B000-memory.dmp
memory/4444-150-0x0000000000400000-0x00000000018C6000-memory.dmp
memory/4444-149-0x0000000008470000-0x000000000848B000-memory.dmp
memory/4444-148-0x0000000010000000-0x000000001001A000-memory.dmp
memory/4444-133-0x0000000000400000-0x00000000018C6000-memory.dmp
memory/4444-141-0x0000000008470000-0x000000000848B000-memory.dmp
memory/4444-137-0x0000000010000000-0x000000001001A000-memory.dmp