gh0strat | ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\svchcst\Parameters\ServiceDll = "C:\\Windows\\system32\\240656390.bat"	look2.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-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1141987721-3945596982-3297311814-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Executes dropped EXE 6 IoCs

pid	Process
4952	look2.exe
4848	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
4328	._cache_HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
3100	Synaptics.exe
4144	svchcst.exe
4968	._cache_Synaptics.exe

Loads dropped DLL 3 IoCs

pid	Process
4952	look2.exe
4580	svchost.exe
4144	svchcst.exe

UPX packed file 44 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4328-103-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-127-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-132-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-102-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-134-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-140-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-145-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-147-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-149-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-152-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-201-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-203-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-205-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-207-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-209-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-211-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-213-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-216-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-218-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-220-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-235-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-238-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-242-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-224-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4328-243-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-245-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-246-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-248-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-250-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-254-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-263-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-267-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-258-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-282-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-284-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-288-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-291-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-295-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-298-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-301-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-305-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-307-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-314-0x0000000010000000-0x000000001003E000-memory.dmp	upx
behavioral2/memory/4968-315-0x0000000010000000-0x000000001003E000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

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"	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\240656390.bat	look2.exe
File opened for modification	C:\Windows\SysWOW64\ini.ini	look2.exe
File created	C:\Windows\SysWOW64\svchcst.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\svchcst.exe	svchost.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe

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

System Information Discovery
T1082

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\	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3188	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
4328	._cache_HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
4328	._cache_HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
4328	._cache_HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
4968	._cache_Synaptics.exe
4968	._cache_Synaptics.exe
3188	EXCEL.EXE
3188	EXCEL.EXE
4968	._cache_Synaptics.exe
3188	EXCEL.EXE
3188	EXCEL.EXE
3188	EXCEL.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1864 wrote to memory of 4952	1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	82
PID 1864 wrote to memory of 4952	1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	82
PID 1864 wrote to memory of 4952	1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	82
PID 1864 wrote to memory of 4848	1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	85
PID 1864 wrote to memory of 4848	1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	85
PID 1864 wrote to memory of 4848	1864	ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	85
PID 4848 wrote to memory of 4328	4848	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	87
PID 4848 wrote to memory of 4328	4848	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	87
PID 4848 wrote to memory of 4328	4848	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	87
PID 4848 wrote to memory of 3100	4848	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	88
PID 4848 wrote to memory of 3100	4848	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	88
PID 4848 wrote to memory of 3100	4848	HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe	88
PID 4580 wrote to memory of 4144	4580	svchost.exe	89
PID 4580 wrote to memory of 4144	4580	svchost.exe	89
PID 4580 wrote to memory of 4144	4580	svchost.exe	89
PID 3100 wrote to memory of 4968	3100	Synaptics.exe	90
PID 3100 wrote to memory of 4968	3100	Synaptics.exe	90
PID 3100 wrote to memory of 4968	3100	Synaptics.exe	90

C:\Users\Admin\AppData\Local\Temp\ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
"C:\Users\Admin\AppData\Local\Temp\ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe"
1⤵
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1864
- C:\Users\Admin\AppData\Local\Temp\look2.exe
  C:\Users\Admin\AppData\Local\Temp\\look2.exe
  2⤵
  - Sets DLL path for service in the registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in System32 directory
  PID:4952
- C:\Users\Admin\AppData\Local\Temp\HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
  C:\Users\Admin\AppData\Local\Temp\HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:4848
- - C:\Users\Admin\AppData\Local\Temp\._cache_HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_HD_ac3af1fb2039aa55f8ea6af0797a770e3e3d6217478633ac0c77af77ff854b25.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:4328
- - C:\ProgramData\Synaptics\Synaptics.exe
    "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:3100
  - - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
      "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
      4⤵
      Executes dropped EXE
      Suspicious use of SetWindowsHookEx
      PID:4968

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
PID:2136

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "svchcst"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Windows\SysWOW64\svchcst.exe
  C:\Windows\system32\svchcst.exe "c:\windows\system32\240656390.bat",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:4144

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:3188

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

System Information Discovery