Malware Analysis Report

2024-10-23 21:00

Sample ID 240624-k3tjqsxgln
Target 5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3
SHA256 5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3
Tags
njrat tantuni yihyihyih 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3

Threat Level: Known bad

The file 5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3 was found to be: Known bad.

Malicious Activity Summary

njrat tantuni yihyihyih evasion persistence privilege_escalation trojan

njRAT/Bladabindi

Modifies Windows Firewall

Adds Run key to start application

Suspicious use of SetThreadContext

Event Triggered Execution: Netsh Helper DLL

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-24 09:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-24 09:07

Reported

2024-06-24 09:10

Platform

win7-20240611-en

Max time kernel

149s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Roaming\\Fonts\\dllhost.exe" C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2916 set thread context of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2916 wrote to memory of 2724 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe
PID 2724 wrote to memory of 2592 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe C:\Windows\SysWOW64\netsh.exe
PID 2724 wrote to memory of 2592 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe C:\Windows\SysWOW64\netsh.exe
PID 2724 wrote to memory of 2592 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe C:\Windows\SysWOW64\netsh.exe
PID 2724 wrote to memory of 2592 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe

"C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe" "regasm.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.kingx.info udp

Files

memory/2916-0-0x0000000000220000-0x0000000000221000-memory.dmp

memory/2916-1-0x0000000000400000-0x00000000004BC000-memory.dmp

memory/2916-2-0x00000000029E0000-0x0000000002AD5000-memory.dmp

memory/2916-3-0x0000000003000000-0x00000000030F5000-memory.dmp

memory/2916-4-0x0000000000220000-0x0000000000221000-memory.dmp

memory/2916-5-0x0000000000400000-0x00000000004BC000-memory.dmp

memory/2724-7-0x0000000000400000-0x000000000040C000-memory.dmp

memory/2724-10-0x0000000000400000-0x000000000040C000-memory.dmp

memory/2916-14-0x0000000003000000-0x00000000030F5000-memory.dmp

memory/2724-12-0x0000000000400000-0x000000000040C000-memory.dmp

memory/2916-13-0x00000000029E0000-0x0000000002AD5000-memory.dmp

memory/2724-15-0x0000000074732000-0x0000000074734000-memory.dmp

memory/2724-16-0x0000000074732000-0x0000000074734000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-24 09:07

Reported

2024-06-24 09:10

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Fonts\ = "C:\\Users\\Admin\\AppData\\Roaming\\Fonts\\dllhost.exe" C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4956 set thread context of 4880 N/A C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: 33 N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe

"C:\Users\Admin\AppData\Local\Temp\5ab5b97c731c5898e22153fa6bf4336739faaf9304fe665b89bd4e87955e1ef3.exe"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe

"C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v2.0.50727\regasm.exe" "regasm.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 73.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 80.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 58.99.105.20.in-addr.arpa udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp
US 8.8.8.8:53 2.kingx.info udp

Files

memory/4956-0-0x0000000002250000-0x0000000002251000-memory.dmp

memory/4956-1-0x0000000002570000-0x0000000002665000-memory.dmp

memory/4956-2-0x0000000002C60000-0x0000000002D55000-memory.dmp

memory/4956-3-0x0000000000400000-0x00000000004BC000-memory.dmp

memory/4880-5-0x0000000000400000-0x000000000040C000-memory.dmp

memory/4956-7-0x0000000002570000-0x0000000002665000-memory.dmp

memory/4956-8-0x0000000002C60000-0x0000000002D55000-memory.dmp

memory/4880-9-0x0000000074902000-0x0000000074903000-memory.dmp

memory/4880-10-0x0000000074900000-0x0000000074EB1000-memory.dmp

memory/4880-11-0x0000000074900000-0x0000000074EB1000-memory.dmp

memory/4880-12-0x0000000074900000-0x0000000074EB1000-memory.dmp