xred | 3cb9a6df3ff558af97fc1168ca354a86ef572767e20de577b4e875555468717e

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	._cache_Synaptics.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	._cache_Synaptics.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	._cache_Synaptics.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe

Executes dropped EXE 3 IoCs

pid	Process
4008	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
4376	Synaptics.exe
4396	._cache_Synaptics.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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	._cache_Synaptics.exe

Loads dropped DLL 2 IoCs

pid	Process
4008	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
4396	._cache_Synaptics.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	._cache_Synaptics.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2064	EXCEL.EXE

Suspicious behavior: LoadsDriver 4 IoCs

pid	Process
668	Process not Found
668	Process not Found
668	Process not Found
668	Process not Found

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2064	EXCEL.EXE
2064	EXCEL.EXE
2064	EXCEL.EXE
2064	EXCEL.EXE
2064	EXCEL.EXE
2064	EXCEL.EXE
2064	EXCEL.EXE
2064	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4236 wrote to memory of 4008	4236	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe	82
PID 4236 wrote to memory of 4008	4236	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe	82
PID 4236 wrote to memory of 4008	4236	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe	82
PID 4236 wrote to memory of 4376	4236	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe	83
PID 4236 wrote to memory of 4376	4236	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe	83
PID 4236 wrote to memory of 4376	4236	MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe	83
PID 4376 wrote to memory of 4396	4376	Synaptics.exe	84
PID 4376 wrote to memory of 4396	4376	Synaptics.exe	84
PID 4376 wrote to memory of 4396	4376	Synaptics.exe	84

C:\Users\Admin\AppData\Local\Temp\mumu_setup\MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
"C:\Users\Admin\AppData\Local\Temp\mumu_setup\MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4236
- C:\Users\Admin\AppData\Local\Temp\mumu_setup\._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe
  "C:\Users\Admin\AppData\Local\Temp\mumu_setup\._cache_MuMuInstaller_1.1.0.4_nochannel_zh-Hans_1573633675.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Loads dropped DLL
  - Checks whether UAC is enabled
  - System Location Discovery: System Language Discovery
  PID:4008
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4376
- - C:\Users\Admin\AppData\Local\Temp\mumu_setup\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\mumu_setup\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Loads dropped DLL
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    PID:4396

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion