ardamax | 73a92df3abe0565f65eb72f7d82999007741bb1eff7ca081dd6e784b346bb976

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	iexpIore.exe

Executes dropped EXE 2 IoCs

pid	Process
2320	iexpIore.exe
4420	HSA.exe

Loads dropped DLL 1 IoCs

pid	Process
4420	HSA.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\HSA Start = "C:\\Windows\\SysWOW64\\CTOGAA\\HSA.exe"	HSA.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 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\CTOGAA\	HSA.exe
File created	C:\Windows\SysWOW64\iexpIore.exe	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\iexpIore.exe	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\CTOGAA\HSA.004	iexpIore.exe
File created	C:\Windows\SysWOW64\CTOGAA\HSA.001	iexpIore.exe
File created	C:\Windows\SysWOW64\CTOGAA\HSA.002	iexpIore.exe
File created	C:\Windows\SysWOW64\CTOGAA\HSA.exe	iexpIore.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 3 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	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexpIore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HSA.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-1-5-21-656926755-4116854191-210765258-1000_Classes\Local Settings	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
880	WINWORD.EXE
880	WINWORD.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: 33	4420	HSA.exe
Token: SeIncBasePriorityPrivilege	4420	HSA.exe

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
4420	HSA.exe
4420	HSA.exe
4420	HSA.exe
4420	HSA.exe
880	WINWORD.EXE
880	WINWORD.EXE
880	WINWORD.EXE
880	WINWORD.EXE
880	WINWORD.EXE
880	WINWORD.EXE
880	WINWORD.EXE
880	WINWORD.EXE
880	WINWORD.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3308 wrote to memory of 2320	3308	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe	82
PID 3308 wrote to memory of 2320	3308	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe	82
PID 3308 wrote to memory of 2320	3308	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe	82
PID 3308 wrote to memory of 880	3308	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe	83
PID 3308 wrote to memory of 880	3308	19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe	83
PID 2320 wrote to memory of 4420	2320	iexpIore.exe	84
PID 2320 wrote to memory of 4420	2320	iexpIore.exe	84
PID 2320 wrote to memory of 4420	2320	iexpIore.exe	84

C:\Users\Admin\AppData\Local\Temp\19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\19471f98e68f19bce203dfc964eaaadb_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3308
- C:\Windows\SysWOW64\iexpIore.exe
  "C:\Windows\system32\iexpIore.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\SysWOW64\CTOGAA\HSA.exe
    "C:\Windows\system32\CTOGAA\HSA.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:4420
- 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\event 30-04.doc" /o ""
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

4

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery