modiloader | fbc9717210006babbafdcb94e7dd296f78916d6d722631f5a7f57827b8f670db

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

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

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	mstwain32.exe

ModiLoader Second Stage 22 IoCs

resource	yara_rule
behavioral2/memory/3404-16-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/3404-15-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/3404-17-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/3404-31-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-47-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-46-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-48-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-60-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-61-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-64-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-67-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-70-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-73-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-76-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-79-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-82-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-85-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-88-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-91-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-94-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-97-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-100-0x0000000000400000-0x000000000044F000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
2224	mstwain32.exe
4592	mstwain32.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.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Wine	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
Key opened	\REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\Software\Wine	mstwain32.exe

Loads dropped DLL 4 IoCs

pid	Process
4592	mstwain32.exe
4592	mstwain32.exe
4592	mstwain32.exe
4592	mstwain32.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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe"	mstwain32.exe

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
2224	mstwain32.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1652 set thread context of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 2224 set thread context of 4592	2224	mstwain32.exe	90

UPX packed file 26 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3404-9-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/3404-12-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/3404-16-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/3404-15-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/3404-13-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/3404-17-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/3404-31-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-47-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-46-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-48-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-45-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-60-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-61-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-64-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-67-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-70-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-73-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-76-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-79-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-82-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-85-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-88-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-91-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-94-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-97-0x0000000000400000-0x000000000044F000-memory.dmp	upx
behavioral2/memory/4592-100-0x0000000000400000-0x000000000044F000-memory.dmp	upx

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\mstwain32.exe	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.exe
File created	C:\Windows\cmsetac.dll	mstwain32.exe
File created	C:\Windows\mstwain32.exe	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.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 4 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	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstwain32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstwain32.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
2224	mstwain32.exe
2224	mstwain32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3404	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
Token: SeBackupPrivilege	1052	vssvc.exe
Token: SeRestorePrivilege	1052	vssvc.exe
Token: SeAuditPrivilege	1052	vssvc.exe
Token: SeDebugPrivilege	4592	mstwain32.exe
Token: SeDebugPrivilege	4592	mstwain32.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
2224	mstwain32.exe
4592	mstwain32.exe
4592	mstwain32.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 1652 wrote to memory of 3404	1652	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	82
PID 3404 wrote to memory of 2224	3404	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	88
PID 3404 wrote to memory of 2224	3404	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	88
PID 3404 wrote to memory of 2224	3404	f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe	88
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90
PID 2224 wrote to memory of 4592	2224	mstwain32.exe	90

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- 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:1652
- C:\Users\Admin\AppData\Local\Temp\f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe"
  2⤵
  - Checks computer location settings
  - Checks whether UAC is enabled
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3404
- - C:\Windows\mstwain32.exe
    "C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\f7772238dba163f9bc66ea6681b8a1ac_JaffaCakes118.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - 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:2224
  - - C:\Windows\mstwain32.exe
      "C:\Windows\mstwain32.exe"
      4⤵
      UAC bypass
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Checks whether UAC is enabled
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      System policy modification
      PID:4592

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

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