77dc213ba8d1c31a3dcffb1195716a68ba077392f1ed0d9c9dd2c38dbb229458

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Loader.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\System32\drivers\winhb.sys	Loader.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	Loader.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Loader.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2444}	Loader.exe
File opened for modification	C:\Windows\System32\IME\SHARED\namef.ini	Loader.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2176	Loader.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-UPDATE}	Loader.exe

Launches sc.exe 2 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
3532	sc.exe
4332	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe
2176	Loader.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
660	Process not Found

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 400	2176	Loader.exe	87
PID 2176 wrote to memory of 400	2176	Loader.exe	87
PID 2176 wrote to memory of 208	2176	Loader.exe	88
PID 2176 wrote to memory of 208	2176	Loader.exe	88
PID 208 wrote to memory of 3532	208	cmd.exe	90
PID 208 wrote to memory of 3532	208	cmd.exe	90
PID 2176 wrote to memory of 4916	2176	Loader.exe	91
PID 2176 wrote to memory of 4916	2176	Loader.exe	91
PID 2176 wrote to memory of 440	2176	Loader.exe	92
PID 2176 wrote to memory of 440	2176	Loader.exe	92
PID 440 wrote to memory of 4332	440	cmd.exe	94
PID 440 wrote to memory of 4332	440	cmd.exe	94
PID 2176 wrote to memory of 1712	2176	Loader.exe	95
PID 2176 wrote to memory of 1712	2176	Loader.exe	95

C:\Users\Admin\AppData\Local\Temp\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Drops file in Drivers directory
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2176
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:400
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:208
- - C:\Windows\system32\sc.exe
    sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys
    3⤵
    - Launches sc.exe
    PID:3532
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:4916
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C sc start windowsproc
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:440
- - C:\Windows\system32\sc.exe
    sc start windowsproc
    3⤵
    - Launches sc.exe
    PID:4332
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:1712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

Virtualization/Sandbox Evasion