Malware Analysis Report

2025-03-15 06:26

Sample ID 240122-bdhlhadaer
Target 1722c8695ca31163d93c6cf56f0c8530.bin
SHA256 ba26254def1f881d9b5f0444745b8883e51bc09950e36584dbbab1ad5d370383
Tags
hacked njrat 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

ba26254def1f881d9b5f0444745b8883e51bc09950e36584dbbab1ad5d370383

Threat Level: Known bad

The file 1722c8695ca31163d93c6cf56f0c8530.bin was found to be: Known bad.

Malicious Activity Summary

hacked njrat persistence trojan

Njrat family

njRAT/Bladabindi

Drops startup file

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Drops file in Windows directory

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-22 01:01

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-22 01:01

Reported

2024-01-22 01:04

Platform

win7-20231215-en

Max time kernel

149s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.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:\Windows\Dllhost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Windows\Dllhost.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\Dllhost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." C:\Windows\Dllhost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." C:\Windows\Dllhost.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Dllhost.exe C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe N/A
File opened for modification C:\Windows\Dllhost.exe C:\Windows\Dllhost.exe N/A

Enumerates physical storage devices

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe N/A
N/A N/A C:\Windows\Dllhost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe

"C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe"

C:\Windows\Dllhost.exe

"C:\Windows\Dllhost.exe"

Network

Country Destination Domain Proto
RU 178.187.164.4:7777 tcp
RU 178.187.164.4:7777 tcp
RU 178.187.164.4:7777 tcp
RU 178.187.164.4:7777 tcp
RU 178.187.164.4:7777 tcp
RU 178.187.164.4:7777 tcp

Files

memory/1256-0-0x0000000000250000-0x0000000000262000-memory.dmp

memory/1256-1-0x0000000073DB0000-0x000000007449E000-memory.dmp

memory/1256-2-0x0000000004B70000-0x0000000004BB0000-memory.dmp

C:\Windows\Dllhost.exe

MD5 1722c8695ca31163d93c6cf56f0c8530
SHA1 aa81bc701216ec1441565275c0bfab69376757a6
SHA256 ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e
SHA512 50830a24bb50df4db8f78522f9b4f65f689fc75d6503c1b4c8a4bb7a662e340adf3f80211523d90a4b838c1fc00d1dc01b1711ab954670b2f0ff609e9d926a1d

memory/2408-9-0x0000000000010000-0x0000000000022000-memory.dmp

memory/2408-10-0x0000000073DB0000-0x000000007449E000-memory.dmp

memory/2408-11-0x0000000004BA0000-0x0000000004BE0000-memory.dmp

memory/1256-12-0x0000000073DB0000-0x000000007449E000-memory.dmp

memory/2408-14-0x0000000073DB0000-0x000000007449E000-memory.dmp

memory/2408-15-0x0000000004BA0000-0x0000000004BE0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-22 01:01

Reported

2024-01-22 01:04

Platform

win10v2004-20231215-en

Max time kernel

149s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.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:\Windows\Dllhost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe C:\Windows\Dllhost.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\Dllhost.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." C:\Windows\Dllhost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .." C:\Windows\Dllhost.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Dllhost.exe C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe N/A
File opened for modification C:\Windows\Dllhost.exe C:\Windows\Dllhost.exe N/A

Enumerates physical storage devices

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe N/A
N/A N/A C:\Windows\Dllhost.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A
Token: 33 N/A C:\Windows\Dllhost.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Dllhost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe

"C:\Users\Admin\AppData\Local\Temp\ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e.exe"

C:\Windows\Dllhost.exe

"C:\Windows\Dllhost.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
RU 178.187.164.4:7777 tcp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
RU 178.187.164.4:7777 tcp
RU 178.187.164.4:7777 tcp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
RU 178.187.164.4:7777 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
RU 178.187.164.4:7777 tcp
RU 178.187.164.4:7777 tcp

Files

memory/4692-0-0x0000000000AF0000-0x0000000000B02000-memory.dmp

memory/4692-1-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/4692-2-0x00000000054A0000-0x000000000553C000-memory.dmp

memory/4692-3-0x00000000056A0000-0x00000000056B0000-memory.dmp

memory/4692-4-0x0000000005D60000-0x0000000006304000-memory.dmp

memory/4692-5-0x00000000058E0000-0x0000000005972000-memory.dmp

C:\Windows\Dllhost.exe

MD5 1722c8695ca31163d93c6cf56f0c8530
SHA1 aa81bc701216ec1441565275c0bfab69376757a6
SHA256 ef432c721d03728f4828aaecd2db265474fc13306b0d0f042df5025f2b4d9e2e
SHA512 50830a24bb50df4db8f78522f9b4f65f689fc75d6503c1b4c8a4bb7a662e340adf3f80211523d90a4b838c1fc00d1dc01b1711ab954670b2f0ff609e9d926a1d

memory/4492-16-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/4692-15-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/4492-17-0x0000000005660000-0x0000000005670000-memory.dmp

memory/4492-19-0x0000000005A20000-0x0000000005A2A000-memory.dmp

memory/4492-20-0x0000000074F40000-0x00000000756F0000-memory.dmp

memory/4492-21-0x0000000005660000-0x0000000005670000-memory.dmp