497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c

General

Target

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
Size

628KB
MD5

948e1bf21e1ae1faf4130300ca9102d2
SHA1

06939a83e3dfb6eb81f37f1320aaa5ca8957a3a9
SHA256

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c
SHA512

9eeff11cc0d0dda2d6eba44935ad00db76e04627fe973251dbf5b6b8e7888b3d904ecd88619cfad819e1fdb70610946dffdd9ef9fc6026be9eeb7efbfb7d5829

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:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

Drops file in Drivers directory 2 IoCs

Processes:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	ioc	process
File created	C:\Windows\SysWOW64\drivers\spools.exe	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.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:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

Enumerates connected drives 3 TTPs 20 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	ioc	process
File opened (read-only)	\??\F:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\J:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\K:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\Q:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\V:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\X:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\E:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\H:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\M:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\N:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\O:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\U:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\G:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\P:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\I:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\R:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\S:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\T:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\W:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
File opened (read-only)	\??\L:	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.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:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

Modifies registry class 1 IoCs

Processes:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe

description	pid	process	target process
PID 3952 wrote to memory of 2128	3952	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe	reg.exe
PID 3952 wrote to memory of 2128	3952	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe	reg.exe
PID 3952 wrote to memory of 2128	3952	497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe
"C:\Users\Admin\AppData\Local\Temp\497cac9eb3d55808e304d0e60f6c94b0edf20a6116ef7aa4c294f00b51eefe9c.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Adds Run key to start application
- Enumerates connected drives
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3952