Malware Analysis Report

2025-01-22 14:03

Sample ID 240225-klc6esfh64
Target a3593e1bb1cbff5e24dfe2c56cf49a8d
SHA256 e064534d97cf20ede110465c290e99afad30967d8556775796a3a04203f48fec
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

e064534d97cf20ede110465c290e99afad30967d8556775796a3a04203f48fec

Threat Level: Known bad

The file a3593e1bb1cbff5e24dfe2c56cf49a8d was found to be: Known bad.

Malicious Activity Summary

njrat hacked evasion persistence trojan

UAC bypass

njRAT/Bladabindi

Modifies Windows Firewall

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Checks whether UAC is enabled

AutoIT Executable

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

System policy modification

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-25 08:41

Signatures

AutoIT Executable

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-25 08:40

Reported

2024-02-25 08:43

Platform

win7-20240221-en

Max time kernel

150s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe"

Signatures

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A

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\5341\5341.exe N/A
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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\0dc24807523d3cd24b54cd0996e4c49b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." C:\Users\Admin\AppData\Local\Temp\server.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\0dc24807523d3cd24b54cd0996e4c49b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1684 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe C:\Users\Admin\AppData\Local\Temp\5341\5341.exe
PID 1684 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe C:\Users\Admin\AppData\Local\Temp\5341\5341.exe
PID 1684 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe C:\Users\Admin\AppData\Local\Temp\5341\5341.exe
PID 1684 wrote to memory of 2648 N/A C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe C:\Users\Admin\AppData\Local\Temp\5341\5341.exe
PID 2648 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\5341\5341.exe C:\Users\Admin\AppData\Local\Temp\server.exe
PID 2648 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\5341\5341.exe C:\Users\Admin\AppData\Local\Temp\server.exe
PID 2648 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\5341\5341.exe C:\Users\Admin\AppData\Local\Temp\server.exe
PID 2648 wrote to memory of 2616 N/A C:\Users\Admin\AppData\Local\Temp\5341\5341.exe C:\Users\Admin\AppData\Local\Temp\server.exe
PID 2616 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\server.exe C:\Windows\SysWOW64\netsh.exe
PID 2616 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\server.exe C:\Windows\SysWOW64\netsh.exe
PID 2616 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\server.exe C:\Windows\SysWOW64\netsh.exe
PID 2616 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\server.exe C:\Windows\SysWOW64\netsh.exe

System policy modification

evasion
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe

"C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe"

C:\Users\Admin\AppData\Local\Temp\5341\5341.exe

"C:\Users\Admin\AppData\Local\Temp\5341\5341.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 10.10.10.10:5552 tcp
N/A 10.10.10.10:5552 tcp
N/A 10.10.10.10:5552 tcp
N/A 10.10.10.10:5552 tcp
N/A 10.10.10.10:5552 tcp
N/A 10.10.10.10:5552 tcp

Files

\Users\Admin\AppData\Local\Temp\5341\5341.exe

MD5 2c658b294b94ada8f4ccf02e4c682ade
SHA1 9f5393f9f374199070f0ad15ae17426d414053d4
SHA256 32435ea75fdd3b309051fc45ec5c3ef5b1768791f5421ea25c7fd85b38496337
SHA512 d8991a605721ce3adaedb8aa40b29858d8c5fa0cc8b74fb3a0e997bfa5e73629822a03c438bcc903cfb4df01eb59293a7e4b9332c28cfc3f5af7ccdec8123d52

memory/2648-14-0x0000000073C50000-0x00000000741FB000-memory.dmp

memory/2648-15-0x0000000073C50000-0x00000000741FB000-memory.dmp

memory/2648-16-0x0000000000120000-0x0000000000160000-memory.dmp

memory/2616-24-0x0000000073C50000-0x00000000741FB000-memory.dmp

memory/2648-27-0x0000000073C50000-0x00000000741FB000-memory.dmp

memory/2616-26-0x0000000000180000-0x00000000001C0000-memory.dmp

memory/2616-25-0x0000000073C50000-0x00000000741FB000-memory.dmp

memory/2616-28-0x0000000073C50000-0x00000000741FB000-memory.dmp

memory/2616-29-0x0000000000180000-0x00000000001C0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-25 08:40

Reported

2024-02-25 08:43

Platform

win10v2004-20240221-en

Max time kernel

149s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe"

Signatures

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A

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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\5341\5341.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5341\5341.exe N/A
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-1-5-21-1712835645-2080934712-2142796781-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\0dc24807523d3cd24b54cd0996e4c49b = "\"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\0dc24807523d3cd24b54cd0996e4c49b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." C:\Users\Admin\AppData\Local\Temp\server.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.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
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

System policy modification

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe

"C:\Users\Admin\AppData\Local\Temp\a3593e1bb1cbff5e24dfe2c56cf49a8d.exe"

C:\Users\Admin\AppData\Local\Temp\5341\5341.exe

"C:\Users\Admin\AppData\Local\Temp\5341\5341.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 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
N/A 10.10.10.10:5552 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
N/A 10.10.10.10:5552 tcp
US 8.8.8.8:53 180.178.17.96.in-addr.arpa udp
N/A 10.10.10.10:5552 tcp
N/A 10.10.10.10:5552 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
N/A 10.10.10.10:5552 tcp
N/A 10.10.10.10:5552 tcp

Files

C:\Users\Admin\AppData\Local\Temp\5341\5341.exe

MD5 2c658b294b94ada8f4ccf02e4c682ade
SHA1 9f5393f9f374199070f0ad15ae17426d414053d4
SHA256 32435ea75fdd3b309051fc45ec5c3ef5b1768791f5421ea25c7fd85b38496337
SHA512 d8991a605721ce3adaedb8aa40b29858d8c5fa0cc8b74fb3a0e997bfa5e73629822a03c438bcc903cfb4df01eb59293a7e4b9332c28cfc3f5af7ccdec8123d52

memory/4256-9-0x0000000073630000-0x0000000073BE1000-memory.dmp

memory/4256-10-0x0000000000D40000-0x0000000000D50000-memory.dmp

memory/4256-11-0x0000000073630000-0x0000000073BE1000-memory.dmp

memory/4256-21-0x0000000073630000-0x0000000073BE1000-memory.dmp

memory/1972-22-0x0000000073630000-0x0000000073BE1000-memory.dmp

memory/1972-23-0x0000000001110000-0x0000000001120000-memory.dmp

memory/1972-24-0x0000000073630000-0x0000000073BE1000-memory.dmp

memory/1972-25-0x0000000073630000-0x0000000073BE1000-memory.dmp

memory/1972-26-0x0000000001110000-0x0000000001120000-memory.dmp