Analysis
- max time kernel
156s - max time network
162s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
03/06/2022, 01:26
General
- Target 144af4b3b008e90a5b4bdfb4f815d95d2fb6a4f01b380964d7f7e744fa9935a6.exe
- Size 1.8MB
- Sample220603-btybwsdea7
- SHA256 144af4b3b008e90a5b4bdfb4f815d95d2fb6a4f01b380964d7f7e744fa9935a6
Malware Config
Extracted
-
buer
-
http://loy01.top/
-
http://loy02.top/
Signatures
- Buer
Buer is a new modular loader first seen in August 2019.
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Buer Loader 4 IoCs
Detects Buer loader in memory or disk.
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- Executes dropped EXE 1 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\144af4b3b008e90a5b4bdfb4f815d95d2fb6a4f01b380964d7f7e744fa9935a6.exe"C:\Users\Admin\AppData\Local\Temp\144af4b3b008e90a5b4bdfb4f815d95d2fb6a4f01b380964d7f7e744fa9935a6.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\UBlockPlugin\plugin.exeC:\ProgramData\UBlockPlugin\plugin.exe "C:\Users\Admin\AppData\Local\Temp\144af4b3b008e90a5b4bdfb4f815d95d2fb6a4f01b380964d7f7e744fa9935a6.exe" ensgJJ2⤵
- Modifies WinLogon for persistence
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\secinit.exeC:\ProgramData\UBlockPlugin\plugin.exe3⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2336 -s 2244⤵
- Program crash
-
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 2336 -ip 23361⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
plugin.exe
plugin.exe
memory/2024-139-0x000000003FB50000-0x000000003FFCC000-memory.dmp
memory/2024-140-0x000000003FB50000-0x000000003FFCC000-memory.dmp
memory/2024-141-0x0000000077490000-0x0000000077633000-memory.dmp
memory/2024-144-0x000000003FB50000-0x000000003FFCC000-memory.dmp
memory/2024-145-0x000000003FB50000-0x000000003FFCC000-memory.dmp
memory/2024-146-0x0000000077490000-0x0000000077633000-memory.dmp
memory/2728-135-0x000000003F6C0000-0x000000003FB3C000-memory.dmp
memory/2728-134-0x0000000077490000-0x0000000077633000-memory.dmp
memory/2728-133-0x000000003F6C0000-0x000000003FB3C000-memory.dmp
memory/2728-142-0x0000000077490000-0x0000000077633000-memory.dmp