Malware Analysis Report

2025-01-22 14:03

Sample ID 240225-flvy1scg6z
Target NOT A VIRUS.exe
SHA256 ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f
Tags
hacked njrat persistence
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

ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f

Threat Level: Known bad

The file NOT A VIRUS.exe was found to be: Known bad.

Malicious Activity Summary

hacked njrat persistence

Njrat family

Drops startup file

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Drops file in Program Files directory

Unsigned PE

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-25 04:58

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-25 04:58

Reported

2024-02-25 05:05

Platform

win7-20240221-en

Max time kernel

209s

Max time network

212s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.exe C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.url C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.exe C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NOT A VIRUS.exe\" .." C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NOT A VIRUS.exe\" .." C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A
N/A 0.tcp.eu.ngrok.io N/A N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\TASKKILL.exe N/A
N/A N/A C:\Windows\SysWOW64\TASKKILL.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\TASKKILL.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\TASKKILL.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\taskmgr.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\taskmgr.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\taskmgr.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\system32\taskmgr.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe

"C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe"

C:\Windows\SysWOW64\TASKKILL.exe

TASKKILL /F /IM wscript.exe

C:\Windows\SysWOW64\TASKKILL.exe

TASKKILL /F /IM cmd.exe

C:\Windows\system32\taskmgr.exe

"C:\Windows\system32\taskmgr.exe" /4

C:\Windows\system32\taskmgr.exe

"C:\Windows\system32\taskmgr.exe" /4

C:\Windows\system32\taskmgr.exe

"C:\Windows\system32\taskmgr.exe" /4

C:\Windows\system32\taskmgr.exe

"C:\Windows\system32\taskmgr.exe" /4

C:\Windows\system32\taskmgr.exe

"C:\Windows\system32\taskmgr.exe" /4

C:\Windows\system32\verclsid.exe

"C:\Windows\system32\verclsid.exe" /S /C {0B2C9183-C9FA-4C53-AE21-C900B0C39965} /I {0C733A8A-2A1C-11CE-ADE5-00AA0044773D} /X 0x401

Network

Country Destination Domain Proto
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
DE 3.124.142.205:12607 0.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
DE 18.192.31.165:12607 0.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
US 8.8.8.8:53 0.tcp.eu.ngrok.io udp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp
DE 3.125.223.134:12607 0.tcp.eu.ngrok.io tcp

Files

memory/2864-0-0x0000000074750000-0x0000000074CFB000-memory.dmp

memory/2864-1-0x0000000074750000-0x0000000074CFB000-memory.dmp

memory/2864-2-0x0000000000BC0000-0x0000000000C00000-memory.dmp

memory/2864-8-0x0000000074750000-0x0000000074CFB000-memory.dmp

memory/2864-9-0x0000000074750000-0x0000000074CFB000-memory.dmp

memory/2864-10-0x0000000000BC0000-0x0000000000C00000-memory.dmp

memory/2864-11-0x0000000000BC0000-0x0000000000C00000-memory.dmp

memory/2864-12-0x0000000000BC0000-0x0000000000C00000-memory.dmp

memory/2864-13-0x0000000000BC0000-0x0000000000C00000-memory.dmp

memory/2864-14-0x0000000000BC0000-0x0000000000C00000-memory.dmp