buer | 4b2ed73de06d0ca3fc62179593223adf95f7118c542d1c5a8761f0629ef0cad7

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	6eea66a6e9875547c9f9215428141902.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	plugin.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	6eea66a6e9875547c9f9215428141902.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	6eea66a6e9875547c9f9215428141902.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	plugin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	plugin.exe

Deletes itself 1 IoCs

pid	Process
4388	plugin.exe

Executes dropped EXE 1 IoCs

pid	Process
4388	plugin.exe

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.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Software\Wine	plugin.exe
Key opened	\REGISTRY\USER\S-1-5-21-768304381-2824894965-3840216961-1000\Software\Wine	6eea66a6e9875547c9f9215428141902.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1916	6eea66a6e9875547c9f9215428141902.exe
4388	plugin.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3636	3720	WerFault.exe	92
2340	4388	WerFault.exe	89

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1916	6eea66a6e9875547c9f9215428141902.exe
1916	6eea66a6e9875547c9f9215428141902.exe
4388	plugin.exe
4388	plugin.exe
4388	plugin.exe
4388	plugin.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 4388	1916	6eea66a6e9875547c9f9215428141902.exe	89
PID 1916 wrote to memory of 4388	1916	6eea66a6e9875547c9f9215428141902.exe	89
PID 1916 wrote to memory of 4388	1916	6eea66a6e9875547c9f9215428141902.exe	89
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92
PID 4388 wrote to memory of 3720	4388	plugin.exe	92

C:\Users\Admin\AppData\Local\Temp\6eea66a6e9875547c9f9215428141902.exe
"C:\Users\Admin\AppData\Local\Temp\6eea66a6e9875547c9f9215428141902.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
PID:1916
- C:\ProgramData\UBlockPlugin\plugin.exe
  C:\ProgramData\UBlockPlugin\plugin.exe "C:\Users\Admin\AppData\Local\Temp\6eea66a6e9875547c9f9215428141902.exe" ensgJJ
  2⤵
  - Modifies WinLogon for persistence
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Deletes itself
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4388
- - C:\Windows\SysWOW64\secinit.exe
    C:\ProgramData\UBlockPlugin\plugin.exe
    3⤵
    PID:3720
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3720 -s 220
      4⤵
      Program crash
      PID:3636
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4388 -s 1164
    3⤵
    - Program crash
    PID:2340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3720 -ip 3720
1⤵
PID:4632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4388 -ip 4388
1⤵
PID:4636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Query Registry

3

System Information Discovery

T1082

Virtualization/Sandbox Evasion

2