c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c

General

Target

c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe
Size

693KB
MD5

7418800e921a8309cdefc04f9ec4b871
SHA1

0533cf54a5f3c90ec637582da03d0266fad04297
SHA256

c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c
SHA512

aabbbec362e6522b29a29c07e09ad181140cfd88a62ae01849115b398945a2eee4dced8f63cbed0cdfba3aca2e08788d3320d2ddf2ae467066c30691e491ce7e
SSDEEP

12288:inaKawSQQ+G5Z5syS5syS5syC+G5sy8eeeQ+AM5syS5Z5Z5Z5Beu:ai22w8eeesAMeu

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"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000400000001e6ed-134.dat	acprotect
behavioral2/memory/4356-135-0x0000000010000000-0x000000001010B000-memory.dmp	acprotect

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe
File created	C:\Windows\SysWOW64\drivers\spools.exe	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.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"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000400000001e6ed-134.dat	upx
behavioral2/memory/4356-135-0x0000000010000000-0x000000001010B000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
4356	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.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\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\Local Settings\\Application Data\\cftmon.exe"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe
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"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.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	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C}	reg.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA}	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"	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ftpdll.dll	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4356	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 5072	4356	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe	87
PID 4356 wrote to memory of 5072	4356	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe	87
PID 4356 wrote to memory of 5072	4356	c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe	87

C:\Users\Admin\AppData\Local\Temp\c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.exe
"C:\Users\Admin\AppData\Local\Temp\c4f3e53e8090f707c53a1c4ebab49a5c3376034e3cfaa9c8745a3a4c8cf6c65c.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:4356
- C:\Windows\SysWOW64\reg.exe
  reg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f
  2⤵
  - Installs/modifies Browser Helper Object
  PID:5072

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/4356-132-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/4356-135-0x0000000010000000-0x000000001010B000-memory.dmp

Filesize
1.0MB

Download
memory/4356-136-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads