b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470

General

Target

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe
Size

451KB
MD5

85664924a9148c4cd14ec6d9c08eb1f8
SHA1

eff1533c35324a34cfc7aee0be26805cf5373429
SHA256

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470
SHA512

bbf1c2db30d6c9f59c003aaf0aeda2717ea3f4e92da85dbda1dab0a33e891f4ece8478d6026569b5e8275f1e6e93438644db9d0f112dbc18e62ea70875fa9f54

Score

10^/10

adware persistence stealer

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

Drops file in Drivers directory 2 IoCs

Processes:

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

description	ioc	process
File created	C:\Windows\SysWOW64\drivers\spools.exe	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

Installs/modifies Browser Helper Object 2 TTPs
BHOs are DLL modules which act as plugins for Internet Explorer.
stealer adware

Modify Registry
T1112

Browser Extensions
T1176

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

Modifies registry class 1 IoCs

Processes:

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe

description	pid	process	target process
PID 4808 wrote to memory of 5004	4808	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe	reg.exe
PID 4808 wrote to memory of 5004	4808	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe	reg.exe
PID 4808 wrote to memory of 5004	4808	b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe
"C:\Users\Admin\AppData\Local\Temp\b071599d7421436e4c8d1014f279af3920becbd60979867d82fa7e883786d470.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Adds Run key to start application
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4808