658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5

General

Target

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
Size

1.0MB
MD5

c05e06f9449af4284567bb6617ffd1d8
SHA1

e68f2a381eb46fb93a8deb849762b8aa3ebcf11d
SHA256

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5
SHA512

db9eeaac452be0dab0c0e8fc5429b2a5435caf8ba1b55f17c5dd9d2e1e1891656ec8c156f770079f5b67a456a2086ec38c8a2b052021128b52a10e1c4a049781

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:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

Drops file in Drivers directory 2 IoCs

Processes:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File created	C:\Windows\SysWOW64\drivers\spools.exe	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.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:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.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"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.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"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.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:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

description	ioc	process
File opened (read-only)	\??\F:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\G:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\K:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\Q:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\V:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\X:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\I:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\J:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\M:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\N:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\P:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\E:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\L:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\R:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\S:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\H:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\O:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\T:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\U:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
File opened (read-only)	\??\W:	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.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:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

Modifies registry class 1 IoCs

Processes:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe

description	pid	process	target process
PID 3016 wrote to memory of 1492	3016	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe	reg.exe
PID 3016 wrote to memory of 1492	3016	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe	reg.exe
PID 3016 wrote to memory of 1492	3016	658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.exe
"C:\Users\Admin\AppData\Local\Temp\658c90d4fbbfcf585ed883179b8dca94f8e7ae97ceeb5de3c3f476dc602ae0f5.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:3016