modiloader | 2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	svchost.exe

ModiLoader Second Stage 32 IoCs

resource	yara_rule
behavioral2/memory/3396-1-0x0000000000400000-0x0000000000439000-memory.dmp	modiloader_stage2
behavioral2/memory/3396-2-0x0000000000400000-0x0000000000439000-memory.dmp	modiloader_stage2
behavioral2/memory/3396-3-0x0000000000400000-0x0000000000439000-memory.dmp	modiloader_stage2
behavioral2/memory/3396-9-0x0000000000400000-0x0000000000439000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-10-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-12-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-11-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-15-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3976-19-0x0000000001290000-0x000000000135E000-memory.dmp	modiloader_stage2
behavioral2/memory/3976-22-0x0000000001290000-0x000000000135E000-memory.dmp	modiloader_stage2
behavioral2/memory/3976-20-0x0000000001290000-0x000000000135E000-memory.dmp	modiloader_stage2
behavioral2/memory/3976-21-0x0000000001290000-0x000000000135E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-23-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-26-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-28-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-27-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-24-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-25-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/1324-34-0x0000000000F00000-0x0000000000FCE000-memory.dmp	modiloader_stage2
behavioral2/memory/1324-33-0x0000000000F00000-0x0000000000FCE000-memory.dmp	modiloader_stage2
behavioral2/memory/1324-32-0x0000000000F00000-0x0000000000FCE000-memory.dmp	modiloader_stage2
behavioral2/memory/1324-35-0x0000000000F00000-0x0000000000FCE000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-40-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-45-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-44-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-43-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-42-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/3400-41-0x0000000000ED0000-0x0000000000F9E000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-86-0x00000000006C0000-0x000000000078E000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-88-0x00000000006C0000-0x000000000078E000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-87-0x00000000006C0000-0x000000000078E000-memory.dmp	modiloader_stage2
behavioral2/memory/4412-85-0x00000000006C0000-0x000000000078E000-memory.dmp	modiloader_stage2

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\{c542aaa0-83ac-c08c-4018-cb45110b6a7f} = "\"C:\\ProgramData\\Microsoft\\{c542aaa0-83ac-c08c-4018-cb45110b6a7f}\\{c542aaa0-83ac-c08c-4018-cb45110b6a7f}.exe\""	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe

Disables use of System Restore points 1 TTPs
evasion

Inhibit System Recovery
T1490

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	svchost.exe

Checks BIOS information in registry 2 TTPs 2 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	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe

Deletes itself 1 IoCs

pid	Process
3400	svchost.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\{c542aaa0-83ac-c08c-4018-cb45110b6a7f} = "\"C:\\ProgramData\\Microsoft\\{c542aaa0-83ac-c08c-4018-cb45110b6a7f}\\{c542aaa0-83ac-c08c-4018-cb45110b6a7f}.exe\""	svchost.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	svchost.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1828 set thread context of 3396	1828	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	85

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2292	1828	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 6 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	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Modifies Internet Explorer settings 1 TTPs 6 IoCs

adware spyware

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_AJAX_CONNECTIONEVENTS\svchost.exe = "1"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl	svchost.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\svchost.exe = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\explorer.exe = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_AJAX_CONNECTIONEVENTS	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe
3400	svchost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 3396	1828	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	85
PID 1828 wrote to memory of 3396	1828	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	85
PID 1828 wrote to memory of 3396	1828	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	85
PID 1828 wrote to memory of 3396	1828	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	85
PID 1828 wrote to memory of 3396	1828	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	85
PID 3396 wrote to memory of 3400	3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	88
PID 3396 wrote to memory of 3400	3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	88
PID 3396 wrote to memory of 3400	3396	2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe	88
PID 3400 wrote to memory of 3976	3400	svchost.exe	90
PID 3400 wrote to memory of 3976	3400	svchost.exe	90
PID 3400 wrote to memory of 3976	3400	svchost.exe	90
PID 3400 wrote to memory of 1324	3400	svchost.exe	92
PID 3400 wrote to memory of 1324	3400	svchost.exe	92
PID 3400 wrote to memory of 1324	3400	svchost.exe	92
PID 3400 wrote to memory of 4412	3400	svchost.exe	108
PID 3400 wrote to memory of 4412	3400	svchost.exe	108
PID 3400 wrote to memory of 4412	3400	svchost.exe	108

C:\Users\Admin\AppData\Local\Temp\2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
"C:\Users\Admin\AppData\Local\Temp\2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Users\Admin\AppData\Local\Temp\2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe
  "C:\Users\Admin\AppData\Local\Temp\2f21a1374622417561cc5ec162c134894b9b84a24cd7e5daea137006795cf370.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3396
- - C:\Windows\SysWOW64\svchost.exe
    "svchost.exe"
    3⤵
    - Looks for VirtualBox Guest Additions in registry
    - Adds policy Run key to start application
    - Looks for VMWare Tools registry key
    - Checks BIOS information in registry
    - Deletes itself
    - Adds Run key to start application
    - Maps connected drives based on registry
    - System Location Discovery: System Language Discovery
    - Modifies Internet Explorer settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3400
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Windows\SysWOW64\svchost.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:3976
  - - C:\Windows\SysWOW64\explorer.exe
      "explorer.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:1324
  - - C:\Windows\SysWOW64\svchost.exe
      "C:\Windows\SysWOW64\svchost.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:4412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1828 -s 276
  2⤵
  - Program crash
  PID:2292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1828 -ip 1828
1⤵
PID:4200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion