Malware Analysis Report

2024-10-19 08:08

Sample ID 240529-nnrndadg44
Target Primordial.exe
SHA256 0088d42558db8697390fe888cc6bbb230fdcaf726069a11cc28a44595eb38f18
Tags
timer 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

0088d42558db8697390fe888cc6bbb230fdcaf726069a11cc28a44595eb38f18

Threat Level: Known bad

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

Malicious Activity Summary

timer njrat evasion

Njrat family

Modifies Windows Firewall

Drops startup file

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-29 11:32

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-29 11:32

Reported

2024-05-29 11:33

Platform

win7-20240419-en

Max time kernel

13s

Max time network

0s

Command Line

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

Signatures

Modifies Windows Firewall

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe C:\Users\Admin\AppData\Local\Temp\Primordial.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe C:\Users\Admin\AppData\Local\Temp\Primordial.exe N/A

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp

Files

memory/2420-0-0x0000000074641000-0x0000000074642000-memory.dmp

memory/2420-1-0x0000000074640000-0x0000000074BEB000-memory.dmp

memory/2420-2-0x0000000074640000-0x0000000074BEB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-29 11:32

Reported

2024-05-29 11:33

Platform

win10v2004-20240508-en

Max time kernel

16s

Max time network

13s

Command Line

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

Signatures

Modifies Windows Firewall

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe C:\Users\Admin\AppData\Local\Temp\Primordial.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe C:\Users\Admin\AppData\Local\Temp\Primordial.exe N/A

Suspicious behavior: GetForegroundWindowSpam

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2848 wrote to memory of 4724 N/A C:\Users\Admin\AppData\Local\Temp\Primordial.exe C:\Windows\SysWOW64\netsh.exe
PID 2848 wrote to memory of 4724 N/A C:\Users\Admin\AppData\Local\Temp\Primordial.exe C:\Windows\SysWOW64\netsh.exe
PID 2848 wrote to memory of 4724 N/A C:\Users\Admin\AppData\Local\Temp\Primordial.exe C:\Windows\SysWOW64\netsh.exe

Processes

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

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

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Primordial.exe" "Primordial.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 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
NL 23.62.61.75:443 www.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 75.61.62.23.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp

Files

memory/2848-0-0x00000000755A2000-0x00000000755A3000-memory.dmp

memory/2848-1-0x00000000755A0000-0x0000000075B51000-memory.dmp

memory/2848-2-0x00000000755A0000-0x0000000075B51000-memory.dmp