Malware Analysis Report

2025-03-15 06:24

Sample ID 240928-jnss8avbkk
Target 253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe
SHA256 253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894
Tags
hacked njrat discovery 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

253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894

Threat Level: Known bad

The file 253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe was found to be: Known bad.

Malicious Activity Summary

hacked njrat discovery persistence trojan

Njrat family

njRAT/Bladabindi

Checks computer location settings

Executes dropped EXE

Drops startup file

Loads dropped DLL

Adds Run key to start application

Unsigned PE

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: GetForegroundWindowSpam

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-28 07:49

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-28 07:49

Reported

2024-09-28 07:51

Platform

win7-20240903-en

Max time kernel

149s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe"

Signatures

njRAT/Bladabindi

trojan njrat

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\Dllhost.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\Dllhost.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Enumerates physical storage devices

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\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe

"C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe"

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

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

Network

N/A

Files

memory/2956-0-0x0000000074C81000-0x0000000074C82000-memory.dmp

memory/2956-1-0x0000000074C80000-0x000000007522B000-memory.dmp

memory/2956-2-0x0000000074C80000-0x000000007522B000-memory.dmp

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

MD5 fa730ba7926d985677d9d33d0f714509
SHA1 3c0396c78d4b50a147522f9a64eef0387874215e
SHA256 253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894
SHA512 efb111e8fcb31e7609219bf5c5ae4ba9ec467cdb9f6f539ee1bc5bc91493adce9ee57f7f8a24e77fa29abbd991fd32355f9d6a367bee3fa2396c4c3a8bfe4e57

memory/3016-11-0x0000000074C80000-0x000000007522B000-memory.dmp

memory/3016-10-0x0000000074C80000-0x000000007522B000-memory.dmp

memory/2956-12-0x0000000074C80000-0x000000007522B000-memory.dmp

memory/3016-14-0x0000000074C80000-0x000000007522B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-28 07:49

Reported

2024-09-28 07:51

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe N/A

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\Dllhost.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\Dllhost.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.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\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Dllhost.exe\" .." C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Enumerates physical storage devices

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\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Dllhost.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe

"C:\Users\Admin\AppData\Local\Temp\253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894.exe"

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/4984-0-0x00000000749D2000-0x00000000749D3000-memory.dmp

memory/4984-1-0x00000000749D0000-0x0000000074F81000-memory.dmp

memory/4984-2-0x00000000749D0000-0x0000000074F81000-memory.dmp

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

MD5 fa730ba7926d985677d9d33d0f714509
SHA1 3c0396c78d4b50a147522f9a64eef0387874215e
SHA256 253d2bc02e9a0b835ce9c7bf6f05bc9fa33bc60ddfb71f1da3de26befa103894
SHA512 efb111e8fcb31e7609219bf5c5ae4ba9ec467cdb9f6f539ee1bc5bc91493adce9ee57f7f8a24e77fa29abbd991fd32355f9d6a367bee3fa2396c4c3a8bfe4e57

memory/4984-13-0x00000000749D0000-0x0000000074F81000-memory.dmp

memory/1544-12-0x00000000749D0000-0x0000000074F81000-memory.dmp

memory/1544-15-0x00000000749D0000-0x0000000074F81000-memory.dmp