amadey | dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	tkools.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	tkools.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	tkools.exe

Checks BIOS information in registry 2 TTPs 8 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	tkools.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	tkools.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	tkools.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	tkools.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	tkools.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	tkools.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	tkools.exe

Executes dropped EXE 3 IoCs

pid	Process
2312	tkools.exe
944	tkools.exe
3940	tkools.exe

Themida packer 22 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2128-0-0x0000000000E50000-0x00000000018B0000-memory.dmp	themida
behavioral2/memory/2128-3-0x0000000000E50000-0x00000000018B0000-memory.dmp	themida
behavioral2/memory/2128-2-0x0000000000E50000-0x00000000018B0000-memory.dmp	themida
behavioral2/memory/2128-4-0x0000000000E50000-0x00000000018B0000-memory.dmp	themida
behavioral2/files/0x0007000000023cbf-9.dat	themida
behavioral2/memory/2128-16-0x0000000000E50000-0x00000000018B0000-memory.dmp	themida
behavioral2/memory/2312-15-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-17-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-18-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-19-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-28-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-32-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/944-35-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/944-36-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/944-38-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-39-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-40-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-41-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/3940-47-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/3940-46-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/3940-48-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida
behavioral2/memory/2312-50-0x00000000003C0000-0x0000000000E20000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 4 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	tkools.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	tkools.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	tkools.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2128	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
2312	tkools.exe
944	tkools.exe
3940	tkools.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 7 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_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tkools.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tkools.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tkools.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
3512	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2312	2128	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe	83
PID 2128 wrote to memory of 2312	2128	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe	83
PID 2128 wrote to memory of 2312	2128	JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe	83
PID 2312 wrote to memory of 2368	2312	tkools.exe	84
PID 2312 wrote to memory of 2368	2312	tkools.exe	84
PID 2312 wrote to memory of 2368	2312	tkools.exe	84
PID 2312 wrote to memory of 3512	2312	tkools.exe	86
PID 2312 wrote to memory of 3512	2312	tkools.exe	86
PID 2312 wrote to memory of 3512	2312	tkools.exe	86
PID 2368 wrote to memory of 4808	2368	cmd.exe	88
PID 2368 wrote to memory of 4808	2368	cmd.exe	88
PID 2368 wrote to memory of 4808	2368	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dfc643f0c12447398ce3700e22d52442a4773494bc6a7ebc836e6260a0eb3f78.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\91a0189a82\tkools.exe
  "C:\Users\Admin\AppData\Local\Temp\91a0189a82\tkools.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2312
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /f /v Startup /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\91a0189a82\
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2368
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders" /f /v Startup /t REG_SZ /d C:\Users\Admin\AppData\Local\Temp\91a0189a82\
      4⤵
      System Location Discovery: System Language Discovery
      PID:4808
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN tkools.exe /TR "C:\Users\Admin\AppData\Local\Temp\91a0189a82\tkools.exe" /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3512

C:\Users\Admin\AppData\Local\Temp\91a0189a82\tkools.exe
C:\Users\Admin\AppData\Local\Temp\91a0189a82\tkools.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
PID:944

C:\Users\Admin\AppData\Local\Temp\91a0189a82\tkools.exe
C:\Users\Admin\AppData\Local\Temp\91a0189a82\tkools.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
PID:3940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion