c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5

General

Target

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
Size

1.0MB
MD5

d623fd90e78678d98726085df4c9e545
SHA1

de2a16409e2eebef7f96a00b4cd202669a385920
SHA256

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5
SHA512

a001182a61e20bf2adb859e9da6b195d55c40501669070897edbeb43e0cb3fd151dfa32ad61ac766f74e2f91b2f79fa0a7ffe3c3d15fc646e2e1388d4b979bef

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:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

Drops file in Drivers directory 2 IoCs

Processes:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File created	C:\Windows\SysWOW64\drivers\spools.exe	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.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:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.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:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	ioc	process
File opened (read-only)	\??\G:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\Q:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\S:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\U:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\L:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\M:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\O:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\P:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\T:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\V:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\E:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\F:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\I:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\J:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\N:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\W:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\H:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\K:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\R:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
File opened (read-only)	\??\X:	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.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:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

Modifies registry class 1 IoCs

Processes:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe

description	pid	process	target process
PID 368 wrote to memory of 848	368	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe	reg.exe
PID 368 wrote to memory of 848	368	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe	reg.exe
PID 368 wrote to memory of 848	368	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe	reg.exe
PID 368 wrote to memory of 848	368	c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.exe
"C:\Users\Admin\AppData\Local\Temp\c9a9ed260024bc8fafa06f3346c57d4eb315f009674bc8cf703e033b86ce27d5.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:368