Malware Analysis Report

2025-01-22 14:03

Sample ID 240224-e889gshd68
Target Server11.exe
SHA256 915be1f438915d9e334d6fd0021073e25a16ac5c0c5e6e8f945b30cbcfbeea90
Tags
hacked njrat evasion
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

915be1f438915d9e334d6fd0021073e25a16ac5c0c5e6e8f945b30cbcfbeea90

Threat Level: Known bad

The file Server11.exe was found to be: Known bad.

Malicious Activity Summary

hacked njrat evasion

Njrat family

Modifies Windows Firewall

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-24 04:37

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-24 04:37

Reported

2024-02-24 04:40

Platform

win7-20240221-en

Max time kernel

149s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Server11.exe"

Signatures

Modifies Windows Firewall

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

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2516 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe C:\Windows\SysWOW64\netsh.exe
PID 2516 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe C:\Windows\SysWOW64\netsh.exe
PID 2516 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe C:\Windows\SysWOW64\netsh.exe
PID 2516 wrote to memory of 2992 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Server11.exe

"C:\Users\Admin\AppData\Local\Temp\Server11.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server11.exe" "Server11.exe" ENABLE

Network

Country Destination Domain Proto
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp

Files

memory/2516-0-0x0000000074AE0000-0x000000007508B000-memory.dmp

memory/2516-1-0x0000000074AE0000-0x000000007508B000-memory.dmp

memory/2516-2-0x00000000009D0000-0x0000000000A10000-memory.dmp

memory/2516-4-0x0000000074AE0000-0x000000007508B000-memory.dmp

memory/2516-5-0x0000000074AE0000-0x000000007508B000-memory.dmp

memory/2516-6-0x00000000009D0000-0x0000000000A10000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-24 04:37

Reported

2024-02-24 04:40

Platform

win10v2004-20240221-en

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Server11.exe"

Signatures

Modifies Windows Firewall

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

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1760 wrote to memory of 4164 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe C:\Windows\SysWOW64\netsh.exe
PID 1760 wrote to memory of 4164 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe C:\Windows\SysWOW64\netsh.exe
PID 1760 wrote to memory of 4164 N/A C:\Users\Admin\AppData\Local\Temp\Server11.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Server11.exe

"C:\Users\Admin\AppData\Local\Temp\Server11.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Server11.exe" "Server11.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
N/A 127.0.0.1:443 tcp
US 8.8.8.8:53 121.150.79.40.in-addr.arpa udp

Files

memory/1760-0-0x0000000074FF0000-0x00000000755A1000-memory.dmp

memory/1760-1-0x0000000074FF0000-0x00000000755A1000-memory.dmp

memory/1760-2-0x0000000000DD0000-0x0000000000DE0000-memory.dmp

memory/1760-4-0x0000000074FF0000-0x00000000755A1000-memory.dmp

memory/1760-5-0x0000000074FF0000-0x00000000755A1000-memory.dmp