Malware Analysis Report

2024-10-19 07:05

Sample ID 240805-wfxhnaxcpb
Target free fud crypter.exe
SHA256 8b9f7a10b753f412b15ddf92cbc58e3b3ef6b8adcb10bd56c2596d284af3db57
Tags
nanocore discovery evasion keylogger persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8b9f7a10b753f412b15ddf92cbc58e3b3ef6b8adcb10bd56c2596d284af3db57

Threat Level: Known bad

The file free fud crypter.exe was found to be: Known bad.

Malicious Activity Summary

nanocore discovery evasion keylogger persistence spyware stealer trojan

Nanocore family

NanoCore

Adds Run key to start application

Checks whether UAC is enabled

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-05 17:52

Signatures

Nanocore family

nanocore

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-05 17:52

Reported

2024-08-05 17:55

Platform

win11-20240802-en

Max time kernel

11s

Max time network

14s

Command Line

"C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe"

Signatures

NanoCore

keylogger trojan stealer spyware nanocore

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DDP Service = "C:\\Program Files (x86)\\DDP Service\\ddpsv.exe" C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\DDP Service\ddpsv.exe C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A
File opened for modification C:\Program Files (x86)\DDP Service\ddpsv.exe C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365268" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "64" C:\Windows\system32\LogonUI.exe N/A
Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = 99ebff004cc2ff000091f8000078d4000067c000003e9200001a6800f7630c00 C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365268" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292114432" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4290799360" C:\Windows\system32\LogonUI.exe N/A
Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292114432" C:\Windows\system32\LogonUI.exe N/A
Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent C:\Windows\system32\LogonUI.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\system32\LogonUI.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe

"C:\Users\Admin\AppData\Local\Temp\free fud crypter.exe"

C:\Windows\system32\LogonUI.exe

"LogonUI.exe" /flags:0x4 /state0:0xa3a13855 /state1:0x41c64e6d

Network

Country Destination Domain Proto
DE 62.143.14.73:54984 tcp
US 8.8.8.8:53 73.14.143.62.in-addr.arpa udp

Files

memory/2608-0-0x0000000074961000-0x0000000074962000-memory.dmp

memory/2608-1-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/2608-2-0x0000000074960000-0x0000000074F11000-memory.dmp

memory/2608-4-0x0000000074960000-0x0000000074F11000-memory.dmp

C:\Users\Admin\AppData\Roaming\C9038F8C-1E1B-4144-A72A-756D47BBFF27\settings.bin

MD5 ae0f5e6ce7122af264ec533c6b15a27b
SHA1 1265a495c42eed76cc043d50c60c23297e76cce1
SHA256 73b0b92179c61c26589b47e9732ce418b07edee3860ee5a2a5fb06f3b8aa9b26
SHA512 dd44c2d24d4e3a0f0b988ad3d04683b5cb128298043134649bbe33b2512ce0c9b1a8e7d893b9f66fbbcdd901e2b0646c4533fb6c0c8c4afcb95a0efb95d446f8

memory/2608-14-0x0000000074960000-0x0000000074F11000-memory.dmp