diamondfox | 22846ada9d2a89030fd6dd14b1e9297b751208ad2b462b1fe19a82cf60425576

Bypass User Account Control

T1548.002

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	explorer.exe

Windows security bypass 2 TTPs 1 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	explorer.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorer.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\explorer = "C:\\Users\\Admin\\AppData\\Roaming\\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\\explorer.exe"	explorer.exe

Disables RegEdit via registry modification 1 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	explorer.exe

Disables Task Manager via registry modification
evasion

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

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorer.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\explorer.exe	explorer.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\explorer.exe	explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
2608	explorer.exe
708	explorer.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	explorer.exe

Loads dropped DLL 2 IoCs

pid	Process
2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe

Windows security modification 2 TTPs 1 IoCs

Disable or Modify Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	explorer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Users\\Admin\\AppData\\Roaming\\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\explorer = "C:\\Users\\Admin\\AppData\\Roaming\\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\\explorer.exe"	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	explorer.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
2608	explorer.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1984 set thread context of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 2608 set thread context of 708	2608	explorer.exe	37

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 9 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	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Kills process with taskkill 1 IoCs

pid	Process
1704	taskkill.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
2264	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
2608	explorer.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1704	taskkill.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
2608	explorer.exe
708	explorer.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 2788	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	30
PID 1984 wrote to memory of 2788	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	30
PID 1984 wrote to memory of 2788	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	30
PID 1984 wrote to memory of 2788	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	30
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 1984 wrote to memory of 2088	1984	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	32
PID 2088 wrote to memory of 2608	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	34
PID 2088 wrote to memory of 2608	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	34
PID 2088 wrote to memory of 2608	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	34
PID 2088 wrote to memory of 2608	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	34
PID 2608 wrote to memory of 596	2608	explorer.exe	35
PID 2608 wrote to memory of 596	2608	explorer.exe	35
PID 2608 wrote to memory of 596	2608	explorer.exe	35
PID 2608 wrote to memory of 596	2608	explorer.exe	35
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2608 wrote to memory of 708	2608	explorer.exe	37
PID 2088 wrote to memory of 1660	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	38
PID 2088 wrote to memory of 1660	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	38
PID 2088 wrote to memory of 1660	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	38
PID 2088 wrote to memory of 1660	2088	0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe	38
PID 708 wrote to memory of 1704	708	explorer.exe	40
PID 708 wrote to memory of 1704	708	explorer.exe	40
PID 708 wrote to memory of 1704	708	explorer.exe	40
PID 708 wrote to memory of 1704	708	explorer.exe	40
PID 708 wrote to memory of 2264	708	explorer.exe	42
PID 708 wrote to memory of 2264	708	explorer.exe	42
PID 708 wrote to memory of 2264	708	explorer.exe	42
PID 708 wrote to memory of 2264	708	explorer.exe	42

System policy modification 1 TTPs 2 IoCs

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	explorer.exe

C:\Users\Admin\AppData\Local\Temp\0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Windows\SysWOW64\reg.exe
  reg add "HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED" /v EnableBalloonTips /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Users\Admin\AppData\Local\Temp\0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\0a660553b1d746103077a2520e338dbd_JaffaCakes118.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2088
- - C:\Users\Admin\AppData\Roaming\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\explorer.exe
    C:\Users\Admin\AppData\Roaming\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\explorer.exe
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2608
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED" /v EnableBalloonTips /t REG_DWORD /d 0 /f
      4⤵
      System Location Discovery: System Language Discovery
      PID:596
  - - C:\Users\Admin\AppData\Roaming\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\explorer.exe
      "C:\Users\Admin\AppData\Roaming\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\explorer.exe"
      4⤵
      UAC bypass
      Windows security bypass
      Adds policy Run key to start application
      Disables RegEdit via registry modification
      Drops startup file
      Executes dropped EXE
      Windows security modification
      Adds Run key to start application
      Checks whether UAC is enabled
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      System policy modification
      PID:708
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /IM wscript.exe /F
        5⤵
        System Location Discovery: System Language Discovery
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1704
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /create /sc ONLOGON /tn explorer.exe /tr "C:\Users\Admin\AppData\Roaming\com6.{00C6D95F-329C-409a-81D7-C46C66EA7F33}\explorer.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2264
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\A8E6E26E.cmd
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion