Malware Analysis Report

2025-03-15 06:22

Sample ID 241004-2bkaeszbpn
Target 1636-4-0x0000000000720000-0x0000000000732000-memory.dmp
SHA256 1afae7ccecd35cc6c15abb2b71468c4fc9c321b03cf6ac1a6c006a0c3f14587e
Tags
hacked njrat discovery 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

1afae7ccecd35cc6c15abb2b71468c4fc9c321b03cf6ac1a6c006a0c3f14587e

Threat Level: Known bad

The file 1636-4-0x0000000000720000-0x0000000000732000-memory.dmp was found to be: Known bad.

Malicious Activity Summary

hacked njrat discovery persistence

Njrat family

Drops startup file

Adds Run key to start application

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-04 22:24

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-04 22:24

Reported

2024-10-04 22:27

Platform

win7-20240903-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-457978338-2990298471-2379561640-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\1636-4-0x0000000000720000-0x0000000000732000-memory.exe\" .." C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\1636-4-0x0000000000720000-0x0000000000732000-memory.exe\" .." C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.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\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe

"C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 encrypted7745.hopto.org udp
PS 85.113.101.120:1177 encrypted7745.hopto.org tcp

Files

memory/2104-0-0x0000000074151000-0x0000000074152000-memory.dmp

memory/2104-1-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2104-2-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2104-4-0x0000000074150000-0x00000000746FB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-04 22:24

Reported

2024-10-04 22:27

Platform

win10v2004-20240802-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe"

Signatures

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\1636-4-0x0000000000720000-0x0000000000732000-memory.exe\" .." C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\1636-4-0x0000000000720000-0x0000000000732000-memory.exe\" .." C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.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\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe

"C:\Users\Admin\AppData\Local\Temp\1636-4-0x0000000000720000-0x0000000000732000-memory.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 encrypted7745.hopto.org udp
PS 85.113.101.120:1177 encrypted7745.hopto.org tcp
US 8.8.8.8:53 120.101.113.85.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 214.143.182.52.in-addr.arpa udp

Files

memory/4988-0-0x00000000746C2000-0x00000000746C3000-memory.dmp

memory/4988-1-0x00000000746C0000-0x0000000074C71000-memory.dmp

memory/4988-2-0x00000000746C0000-0x0000000074C71000-memory.dmp

memory/4988-5-0x00000000746C0000-0x0000000074C71000-memory.dmp

memory/4988-4-0x00000000746C2000-0x00000000746C3000-memory.dmp

memory/4988-6-0x00000000746C0000-0x0000000074C71000-memory.dmp