d2a948830bc68f57b96a1d379b739d166c511d7bd41ea8b284180eb639519e7b

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\RECYCLER\\S-1-5-21-0243556031-888888379-781863308-14699\\brenasa.exe"	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
3064	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\tbrena = "C:\\RECYCLER\\S-1-5-21-0243556031-888888379-781863308-14699\\brenasa.exe"	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File created	C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-14699\Desktop.ini	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Taskman = "C:\\RECYCLER\\S-1-5-21-0243556031-888888379-781863308-14699\\brenasa.exe"	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1400 set thread context of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88

System Location Discovery: System Language Discovery 1 TTPs 1 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	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3064	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe
3064	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 644	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	83
PID 1400 wrote to memory of 644	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	83
PID 1400 wrote to memory of 644	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	83
PID 1400 wrote to memory of 3008	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	87
PID 1400 wrote to memory of 3008	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	87
PID 1400 wrote to memory of 3008	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	87
PID 1400 wrote to memory of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88
PID 1400 wrote to memory of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88
PID 1400 wrote to memory of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88
PID 1400 wrote to memory of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88
PID 1400 wrote to memory of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88
PID 1400 wrote to memory of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88
PID 1400 wrote to memory of 3064	1400	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	88
PID 3064 wrote to memory of 3580	3064	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	56
PID 3064 wrote to memory of 3580	3064	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	56
PID 3064 wrote to memory of 3580	3064	42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe	56

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3580
- C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1400
- - C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe"
    3⤵
    PID:644
- - C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe"
    3⤵
    PID:3008
- - C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\42bd607d00886ff9f55bb59b5753e830_JaffaCakes118.exe"
    3⤵
    - Modifies WinLogon for persistence
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops desktop.ini file(s)
    - Modifies WinLogon
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

2

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

2

Defense Evasion

Modify Registry

3

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery