ardamax | ed4a22e4be09281a3450114792f3ebfae0c0b1106b96331c30c6cef4d6b73618

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe

Executes dropped EXE 1 IoCs

pid	Process
3544	GPU.exe

Loads dropped DLL 1 IoCs

pid	Process
3544	GPU.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\GPU Start = "C:\\Windows\\SysWOW64\\RYYGCG\\GPU.exe"	GPU.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\RYYGCG\GPU.002	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe
File created	C:\Windows\SysWOW64\RYYGCG\AKV.exe	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe
File created	C:\Windows\SysWOW64\RYYGCG\GPU.exe	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe
File opened for modification	C:\Windows\SysWOW64\RYYGCG\	GPU.exe
File created	C:\Windows\SysWOW64\RYYGCG\GPU.004	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe
File created	C:\Windows\SysWOW64\RYYGCG\GPU.001	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.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 2 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	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GPU.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	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.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	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2211717155-842865201-3404093980-1000_Classes\Local Settings	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4884	WINWORD.EXE
4884	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3544	GPU.exe
3544	GPU.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	3544	GPU.exe
Token: SeIncBasePriorityPrivilege	3544	GPU.exe

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
3544	GPU.exe
3544	GPU.exe
3544	GPU.exe
3544	GPU.exe
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE
4884	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4560 wrote to memory of 3544	4560	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe	86
PID 4560 wrote to memory of 3544	4560	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe	86
PID 4560 wrote to memory of 3544	4560	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe	86
PID 4560 wrote to memory of 4884	4560	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe	87
PID 4560 wrote to memory of 4884	4560	JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fe47798bc47d7b775803e1dbef3c8be.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Windows\SysWOW64\RYYGCG\GPU.exe
  "C:\Windows\system32\RYYGCG\GPU.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3544
- C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
  "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Sobradelo.docx" /o ""
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:4884

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

Credential Access

Discovery

Query Registry

4

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery