Malware Analysis Report

2025-01-22 13:46

Sample ID 240825-lw1vxaxgra
Target Server.exe
SHA256 1122b5afc9fd2cba3efb629dd8b96cfddd50970e3395a7dca6c727f818072041
Tags
njrat hacked discovery evasion persistence privilege_escalation trojan
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

1122b5afc9fd2cba3efb629dd8b96cfddd50970e3395a7dca6c727f818072041

Threat Level: Known bad

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

Malicious Activity Summary

njrat hacked discovery evasion persistence privilege_escalation trojan

Njrat family

njRAT/Bladabindi

Modifies Windows Firewall

Executes dropped EXE

Adds Run key to start application

Event Triggered Execution: Netsh Helper DLL

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-25 09:53

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-25 09:53

Reported

2024-08-25 09:59

Platform

win10-20240404-en

Max time kernel

299s

Max time network

299s

Command Line

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

Signatures

njRAT/Bladabindi

trojan njrat

Modifies Windows Firewall

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\493bfcbfa9e5b5a77111a094b7985e6e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System32.exe\" .." C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\493bfcbfa9e5b5a77111a094b7985e6e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System32.exe\" .." C:\Users\Admin\AppData\Local\Temp\System32.exe N/A

Enumerates physical storage devices

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:\Windows\SysWOW64\netsh.exe N/A
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:\Users\Admin\AppData\Local\Temp\System32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System32.exe N/A

Processes

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

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

C:\Users\Admin\AppData\Local\Temp\System32.exe

"C:\Users\Admin\AppData\Local\Temp\System32.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System32.exe" "System32.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 170.117.168.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/3800-0-0x00000000733D1000-0x00000000733D2000-memory.dmp

memory/3800-1-0x00000000733D0000-0x0000000073980000-memory.dmp

memory/3800-2-0x00000000733D0000-0x0000000073980000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\System32.exe

MD5 2146fb0dd162fc1372c8a7e7d1fdffcc
SHA1 6456199e95ea500ac5c254c19ec9b758e313f3ca
SHA256 1122b5afc9fd2cba3efb629dd8b96cfddd50970e3395a7dca6c727f818072041
SHA512 d7b07efbbc535388fb7c76355f0ccb794bb8b6b62cbe12897bd5d79b25a6ff8b8231af76a990df8faeb1ac5665dfd12344b49afce6dc9ded7170e62e9e41ec53

memory/3800-9-0x00000000733D0000-0x0000000073980000-memory.dmp

memory/2156-10-0x00000000733D0000-0x0000000073980000-memory.dmp

memory/2156-11-0x00000000733D0000-0x0000000073980000-memory.dmp

memory/2156-12-0x00000000733D0000-0x0000000073980000-memory.dmp

memory/2156-13-0x00000000733D0000-0x0000000073980000-memory.dmp