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
2816	plugin.exe

Executes dropped EXE 1 IoCs

pid	Process
2816	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-1-5-21-452311807-3713411997-1028535425-1000\Software\Wine	6eea66a6e9875547c9f9215428141902.exe
Key opened	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Wine	plugin.exe

Loads dropped DLL 2 IoCs

pid	Process
2496	6eea66a6e9875547c9f9215428141902.exe
2496	6eea66a6e9875547c9f9215428141902.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2496	6eea66a6e9875547c9f9215428141902.exe
2816	plugin.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2180	2668	WerFault.exe	29
2900	2816	WerFault.exe	28

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2496	6eea66a6e9875547c9f9215428141902.exe
2816	plugin.exe
2816	plugin.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2816	2496	6eea66a6e9875547c9f9215428141902.exe	28
PID 2496 wrote to memory of 2816	2496	6eea66a6e9875547c9f9215428141902.exe	28
PID 2496 wrote to memory of 2816	2496	6eea66a6e9875547c9f9215428141902.exe	28
PID 2496 wrote to memory of 2816	2496	6eea66a6e9875547c9f9215428141902.exe	28
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2816 wrote to memory of 2668	2816	plugin.exe	29
PID 2668 wrote to memory of 2180	2668	secinit.exe	30
PID 2668 wrote to memory of 2180	2668	secinit.exe	30
PID 2668 wrote to memory of 2180	2668	secinit.exe	30
PID 2668 wrote to memory of 2180	2668	secinit.exe	30
PID 2816 wrote to memory of 2900	2816	plugin.exe	31
PID 2816 wrote to memory of 2900	2816	plugin.exe	31
PID 2816 wrote to memory of 2900	2816	plugin.exe	31
PID 2816 wrote to memory of 2900	2816	plugin.exe	31

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
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2496
- 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:2816
- - C:\Windows\SysWOW64\secinit.exe
    C:\ProgramData\UBlockPlugin\plugin.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2668
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2668 -s 136
      4⤵
      Program crash
      PID:2180
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 560
    3⤵
    - Program crash
    PID:2900

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