xred | 734f289e454119f1bb31e9f4963c64e5230b51264229a1832b1707b9753f276c

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	._cache_BlueWing Cleaner.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	._cache_Synaptics.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	._cache_BlueWing Cleaner.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	._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_Synaptics.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	._cache_Synaptics.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	._cache_BlueWing Cleaner.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	._cache_BlueWing Cleaner.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-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	BlueWing Cleaner.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Executes dropped EXE 3 IoCs

pid	Process
4564	._cache_BlueWing Cleaner.exe
2444	Synaptics.exe
3408	._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"	BlueWing Cleaner.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	._cache_BlueWing Cleaner.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	._cache_BlueWing Cleaner.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	._cache_Synaptics.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	._cache_Synaptics.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0009000000023ca2-5.dat	upx
behavioral2/memory/4564-131-0x0000000000FB0000-0x000000000103A000-memory.dmp	upx

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	BlueWing Cleaner.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_BlueWing Cleaner.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\	BlueWing Cleaner.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1316	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 36 IoCs

pid	Process
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe
3408	._cache_Synaptics.exe
4564	._cache_BlueWing Cleaner.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4564	._cache_BlueWing Cleaner.exe
Token: SeDebugPrivilege	3408	._cache_Synaptics.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1316	EXCEL.EXE
1316	EXCEL.EXE
1316	EXCEL.EXE
1316	EXCEL.EXE
1316	EXCEL.EXE
1316	EXCEL.EXE
1316	EXCEL.EXE
1316	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4260 wrote to memory of 4564	4260	BlueWing Cleaner.exe	86
PID 4260 wrote to memory of 4564	4260	BlueWing Cleaner.exe	86
PID 4260 wrote to memory of 4564	4260	BlueWing Cleaner.exe	86
PID 4260 wrote to memory of 2444	4260	BlueWing Cleaner.exe	87
PID 4260 wrote to memory of 2444	4260	BlueWing Cleaner.exe	87
PID 4260 wrote to memory of 2444	4260	BlueWing Cleaner.exe	87
PID 2444 wrote to memory of 3408	2444	Synaptics.exe	89
PID 2444 wrote to memory of 3408	2444	Synaptics.exe	89
PID 2444 wrote to memory of 3408	2444	Synaptics.exe	89

C:\Users\Admin\AppData\Local\Temp\bluewing TS\BlueWing Cleaner.exe
"C:\Users\Admin\AppData\Local\Temp\bluewing TS\BlueWing Cleaner.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:4260
- C:\Users\Admin\AppData\Local\Temp\bluewing TS\._cache_BlueWing Cleaner.exe
  "C:\Users\Admin\AppData\Local\Temp\bluewing TS\._cache_BlueWing Cleaner.exe"
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Maps connected drives based on registry
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4564
- 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:2444
- - C:\Users\Admin\AppData\Local\Temp\bluewing TS\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\bluewing TS\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Looks for VirtualBox Guest Additions in registry
    - Looks for VMWare Tools registry key
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Maps connected drives based on registry
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3408

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:1316

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

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion