Malware Analysis Report

2025-01-22 14:02

Sample ID 240227-hh76aaaf73
Target a87d7d7848bc287758c88af1cd7d95ae
SHA256 1313a049e8bde8b7c39aaea57fc1061df557d49eb2f48e5dd73e438d32eae158
Tags
njrat hacked evasion persistence 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

1313a049e8bde8b7c39aaea57fc1061df557d49eb2f48e5dd73e438d32eae158

Threat Level: Known bad

The file a87d7d7848bc287758c88af1cd7d95ae was found to be: Known bad.

Malicious Activity Summary

njrat hacked evasion persistence trojan

njRAT/Bladabindi

Modifies Windows Firewall

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-27 06:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-27 06:45

Reported

2024-02-27 06:47

Platform

win7-20240221-en

Max time kernel

149s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.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\server.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\643f582a162261e0ba7633b7acfd7ec1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." C:\Users\Admin\AppData\Local\Temp\server.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\643f582a162261e0ba7633b7acfd7ec1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Enumerates physical storage devices

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

Processes

C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe

"C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe"

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 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp

Files

memory/1288-1-0x0000000073DE0000-0x00000000744CE000-memory.dmp

memory/1288-0-0x0000000000150000-0x000000000016E000-memory.dmp

memory/1288-2-0x0000000004F50000-0x0000000004F90000-memory.dmp

memory/1288-3-0x00000000003D0000-0x00000000003DC000-memory.dmp

\Users\Admin\AppData\Local\Temp\server.exe

MD5 a87d7d7848bc287758c88af1cd7d95ae
SHA1 b731e18e2c296f2ebc0104d2c7767ce4d8ebe27e
SHA256 1313a049e8bde8b7c39aaea57fc1061df557d49eb2f48e5dd73e438d32eae158
SHA512 d20da7eadd1419f2072ffd577a4e892e4ee60b3195a9b9c3cdd8d719b0f4da094f54f8581c8f2640e2411c52b487566b4bbbaee9c89490d8a40f2e8a95a530af

memory/2992-11-0x0000000001380000-0x000000000139E000-memory.dmp

memory/2992-12-0x0000000073DE0000-0x00000000744CE000-memory.dmp

memory/2992-13-0x0000000004C30000-0x0000000004C70000-memory.dmp

memory/1288-14-0x0000000073DE0000-0x00000000744CE000-memory.dmp

memory/2992-15-0x0000000073DE0000-0x00000000744CE000-memory.dmp

memory/2992-16-0x0000000004C30000-0x0000000004C70000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-27 06:45

Reported

2024-02-27 06:47

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\643f582a162261e0ba7633b7acfd7ec1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." C:\Users\Admin\AppData\Local\Temp\server.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\643f582a162261e0ba7633b7acfd7ec1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Enumerates physical storage devices

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

Processes

C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe

"C:\Users\Admin\AppData\Local\Temp\a87d7d7848bc287758c88af1cd7d95ae.exe"

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 20.231.121.79:80 tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
N/A 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
N/A 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
N/A 192.168.64.129:5552 tcp
N/A 192.168.64.129:5552 tcp
US 8.8.8.8:53 168.117.168.52.in-addr.arpa udp

Files

memory/3132-0-0x0000000000F10000-0x0000000000F2E000-memory.dmp

memory/3132-1-0x0000000074D30000-0x00000000754E0000-memory.dmp

memory/3132-2-0x00000000058B0000-0x000000000594C000-memory.dmp

memory/3132-3-0x0000000005F00000-0x00000000064A4000-memory.dmp

memory/3132-4-0x00000000059F0000-0x0000000005A82000-memory.dmp

memory/3132-5-0x0000000005C20000-0x0000000005C30000-memory.dmp

memory/3132-6-0x00000000059D0000-0x00000000059DA000-memory.dmp

memory/3132-7-0x0000000005C30000-0x0000000005C86000-memory.dmp

memory/3132-8-0x0000000005D30000-0x0000000005D3C000-memory.dmp

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

MD5 a87d7d7848bc287758c88af1cd7d95ae
SHA1 b731e18e2c296f2ebc0104d2c7767ce4d8ebe27e
SHA256 1313a049e8bde8b7c39aaea57fc1061df557d49eb2f48e5dd73e438d32eae158
SHA512 d20da7eadd1419f2072ffd577a4e892e4ee60b3195a9b9c3cdd8d719b0f4da094f54f8581c8f2640e2411c52b487566b4bbbaee9c89490d8a40f2e8a95a530af

memory/1188-22-0x0000000074D30000-0x00000000754E0000-memory.dmp

memory/3132-21-0x0000000074D30000-0x00000000754E0000-memory.dmp

memory/1188-23-0x0000000005330000-0x0000000005340000-memory.dmp

memory/1188-24-0x0000000074D30000-0x00000000754E0000-memory.dmp

memory/1188-25-0x0000000005330000-0x0000000005340000-memory.dmp