remcos | d6b0deb424fc3aa7bcb783f29c826fd5505878a95f24586eecb0d0f086d34dd3

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	winmap.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	svchost.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winmap = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmap\\winmap.exe\""	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	winmap.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\winmap = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmap\\winmap.exe\""	winmap.exe

Checks BIOS information in registry 2 TTPs 6 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\SystemBiosVersion	winmap.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	winmap.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe

Deletes itself 1 IoCs

pid	Process
1800	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
464	winmap.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winmap = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmap\\winmap.exe\""	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winmap = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmap\\winmap.exe\""	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winmap = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmap\\winmap.exe\""	winmap.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winmap = "\"C:\\Users\\Admin\\AppData\\Roaming\\winmap\\winmap.exe\""	winmap.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	winmap.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
3012	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
464	winmap.exe
1660	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 464 set thread context of 1660	464	winmap.exe	89

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 5 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	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winmap.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3012	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
3012	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
464	winmap.exe
464	winmap.exe
1660	svchost.exe
1660	svchost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 1800	3012	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe	85
PID 3012 wrote to memory of 1800	3012	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe	85
PID 3012 wrote to memory of 1800	3012	JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe	85
PID 1800 wrote to memory of 3568	1800	WScript.exe	86
PID 1800 wrote to memory of 3568	1800	WScript.exe	86
PID 1800 wrote to memory of 3568	1800	WScript.exe	86
PID 3568 wrote to memory of 464	3568	cmd.exe	88
PID 3568 wrote to memory of 464	3568	cmd.exe	88
PID 3568 wrote to memory of 464	3568	cmd.exe	88
PID 464 wrote to memory of 1660	464	winmap.exe	89
PID 464 wrote to memory of 1660	464	winmap.exe	89
PID 464 wrote to memory of 1660	464	winmap.exe	89
PID 464 wrote to memory of 1660	464	winmap.exe	89
PID 464 wrote to memory of 1660	464	winmap.exe	89
PID 464 wrote to memory of 1660	464	winmap.exe	89
PID 464 wrote to memory of 1660	464	winmap.exe	89
PID 464 wrote to memory of 1660	464	winmap.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfbc12724a70e40d2c8198e0b6b7a31b.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
  2⤵
  - Checks computer location settings
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1800
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\winmap\winmap.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3568
  - - C:\Users\Admin\AppData\Roaming\winmap\winmap.exe
      C:\Users\Admin\AppData\Roaming\winmap\winmap.exe
      4⤵
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Adds policy Run key to start application
      Checks BIOS information in registry
      Executes dropped EXE
      Adds Run key to start application
      Checks whether UAC is enabled
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:464
    - - C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        5⤵
        Identifies VirtualBox via ACPI registry values (likely anti-VM)
        Checks BIOS information in registry
        Suspicious use of NtSetInformationThreadHideFromDebugger
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:1660

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

T1112

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