ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc

General

Target

ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe
Size

357KB
MD5

4b0370a25d60f8395a98f596306b50c6
SHA1

1190f4962e6b27e6fcd475d91356c589f707463c
SHA256

ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc
SHA512

fc8f28b1e1fd80f1ce05c7bc153e5332ced948ae8783a4bba8e6a1b4ee798e15d19d04807e25c43eca1e44a979b77623b78a4af7cfa6c6932e45560adbcc64e9
SSDEEP

6144:icCraNCraK5GR5G1bSankP+6bAw5sy1w5sy1w5sy/yibSj:inaKawSQQ+G5syS5syS5sy/y8u

Score

10^/10

adware persistence stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x0003000000000735-134.dat	acprotect
behavioral2/memory/1712-135-0x0000000010000000-0x000000001010B000-memory.dmp	acprotect

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\drivers\spools.exe	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\spools.exe"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x0003000000000735-134.dat	upx
behavioral2/memory/1712-135-0x0000000010000000-0x000000001010B000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
1712	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	reg.exe

Modifies WinLogon 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe"	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ftpdll.dll	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1712	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 2352	1712	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe	83
PID 1712 wrote to memory of 2352	1712	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe	83
PID 1712 wrote to memory of 2352	1712	ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe	83

C:\Users\Admin\AppData\Local\Temp\ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe
"C:\Users\Admin\AppData\Local\Temp\ff320885d318ed5b2e92a50f7aff0f81b6456b43188e33f7eb007a9bd222d1bc.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Sets service image path in registry
- Loads dropped DLL
- Adds Run key to start application
- Modifies WinLogon
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  PID:2352

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

5

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\ftpdll.dll

Filesize
5KB

MD5
d807aa04480d1d149f7a4cac22984188

SHA1
ffd5be65fd10017e34c11cecd105ebf4aa6c0cd9

SHA256
eddf092d901afe128322910c3ff41a3f242d33d6b4cdf91ece327076b324ccbb

SHA512
875543583c20ab164f37a4fb2587d234ce0a15d649d22b0d1dae5933f0a7683db170578746ea4458c51fec26e2243c6ec00dc10db8d4289789e50d5800cf863e

Download Submit
memory/1712-132-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/1712-135-0x0000000010000000-0x000000001010B000-memory.dmp

Filesize
1.0MB

Download
memory/1712-136-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads