35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277

General

Target

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
Size

1.3MB
MD5

f8e16db49b0a0ded6d642570890aa6bf
SHA1

605fb2eb9c118d54eb1159c8b813b13c42cf3cdf
SHA256

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277
SHA512

7accf722b7caf3acb10b12c25845bf3ea2c73ea5492ea174b311769c64971204f7b291ac228b9d6c877889117efc8fa3036bc4ce7613ea7cf664739971a48889

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:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

Drops file in Drivers directory 2 IoCs

Processes:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	ioc	process
File created	C:\Windows\SysWOW64\drivers\spools.exe	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.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:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
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"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

Enumerates connected drives 3 TTPs 13 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:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	ioc	process
File opened (read-only)	\??\M:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\P:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\F:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\H:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\L:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\J:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\K:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\N:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\O:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\Q:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\E:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\G:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
File opened (read-only)	\??\I:	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.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:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

Modifies registry class 1 IoCs

Processes:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe

description	pid	process	target process
PID 3988 wrote to memory of 3340	3988	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe	reg.exe
PID 3988 wrote to memory of 3340	3988	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe	reg.exe
PID 3988 wrote to memory of 3340	3988	35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.exe
"C:\Users\Admin\AppData\Local\Temp\35d2e8725aac51e28cfe6776485767866e0865b01bcca3d6d62c7ad94a60f277.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:3988