Malware Analysis Report

2025-03-15 06:21

Sample ID 240929-3v719s1bkc
Target Server.exe
SHA256 3175a47ef124f34e3722c407003b2c6d9f047ab8bf842d47007fb3fd94cd0e1e
Tags
hacked njrat discovery evasion persistence privilege_escalation
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3175a47ef124f34e3722c407003b2c6d9f047ab8bf842d47007fb3fd94cd0e1e

Threat Level: Known bad

The file Server.exe was found to be: Known bad.

Malicious Activity Summary

hacked njrat discovery evasion persistence privilege_escalation

Njrat family

Modifies Windows Firewall

Unsigned PE

Event Triggered Execution: Netsh Helper DLL

System Location Discovery: System Language Discovery

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-29 23:51

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-29 23:51

Reported

2024-09-29 23:53

Platform

win7-20240903-en

Max time kernel

147s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Server.exe"

Signatures

Modifies Windows Firewall

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

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.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\Server.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2168 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe C:\Windows\SysWOW64\netsh.exe
PID 2168 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe C:\Windows\SysWOW64\netsh.exe
PID 2168 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe C:\Windows\SysWOW64\netsh.exe
PID 2168 wrote to memory of 2396 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Server.exe

"C:\Users\Admin\AppData\Local\Temp\Server.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE

Network

Country Destination Domain Proto
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp

Files

memory/2168-0-0x00000000748D1000-0x00000000748D2000-memory.dmp

memory/2168-1-0x00000000748D0000-0x0000000074E7B000-memory.dmp

memory/2168-2-0x00000000748D0000-0x0000000074E7B000-memory.dmp

memory/2168-4-0x00000000748D0000-0x0000000074E7B000-memory.dmp

memory/2168-5-0x00000000748D0000-0x0000000074E7B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-29 23:51

Reported

2024-09-29 23:53

Platform

win10v2004-20240802-en

Max time kernel

146s

Max time network

99s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Server.exe"

Signatures

Modifies Windows Firewall

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

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.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\Server.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3200 wrote to memory of 2176 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe C:\Windows\SysWOW64\netsh.exe
PID 3200 wrote to memory of 2176 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe C:\Windows\SysWOW64\netsh.exe
PID 3200 wrote to memory of 2176 N/A C:\Users\Admin\AppData\Local\Temp\Server.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Server.exe

"C:\Users\Admin\AppData\Local\Temp\Server.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server.exe" "Server.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 5.210.23.2.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp
N/A 127.0.0.1:8080 tcp

Files

memory/3200-0-0x0000000074612000-0x0000000074613000-memory.dmp

memory/3200-1-0x0000000074610000-0x0000000074BC1000-memory.dmp

memory/3200-2-0x0000000074610000-0x0000000074BC1000-memory.dmp

memory/3200-5-0x0000000074610000-0x0000000074BC1000-memory.dmp

memory/3200-4-0x0000000074612000-0x0000000074613000-memory.dmp

memory/3200-6-0x0000000074610000-0x0000000074BC1000-memory.dmp