Malware Analysis Report

2025-03-15 06:27

Sample ID 240121-ezznpaeebj
Target 6c579929873c53c8aeac1eec5fd9cd43
SHA256 ca1cfa6d6fbad23c5096a460c845a4426eda5895b24db04b562253d29332e866
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

ca1cfa6d6fbad23c5096a460c845a4426eda5895b24db04b562253d29332e866

Threat Level: Known bad

The file 6c579929873c53c8aeac1eec5fd9cd43 was found to be: Known bad.

Malicious Activity Summary

njrat hacked evasion persistence trojan

njRAT/Bladabindi

Modifies Windows Firewall

Drops startup file

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-21 04:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-21 04:23

Reported

2024-01-21 04:26

Platform

win7-20231215-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6c579929873c53c8aeac1eec5fd9cd43.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Modifies Windows Firewall

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\netsh.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c544fdd3a27573c904e8127ab07c610e.exe C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c544fdd3a27573c904e8127ab07c610e.exe C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\c544fdd3a27573c904e8127ab07c610e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\winhelper.exe\" .." C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c544fdd3a27573c904e8127ab07c610e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\winhelper.exe\" .." C:\Users\Admin\AppData\Local\Temp\winhelper.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\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6c579929873c53c8aeac1eec5fd9cd43.exe

"C:\Users\Admin\AppData\Local\Temp\6c579929873c53c8aeac1eec5fd9cd43.exe"

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

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

C:\Windows\system32\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\winhelper.exe" "winhelper.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 winfix.ddns.net udp

Files

memory/1152-0-0x000007FEF5FB0000-0x000007FEF694D000-memory.dmp

memory/1152-1-0x0000000000AD0000-0x0000000000B50000-memory.dmp

memory/1152-2-0x000007FEF5FB0000-0x000007FEF694D000-memory.dmp

memory/1152-3-0x0000000000A90000-0x0000000000A9C000-memory.dmp

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

MD5 6c579929873c53c8aeac1eec5fd9cd43
SHA1 dd1bb4131e623621167f7787e502901b3dc290e7
SHA256 ca1cfa6d6fbad23c5096a460c845a4426eda5895b24db04b562253d29332e866
SHA512 7f9707963f6a27fb13329f705664749bf68905d5d12dbb2c546d425520c65a41cd1e82f894ff3c805c46b97de01126e2cd12b452ee9beffa232ec32e540bba28

memory/1152-10-0x000007FEF5FB0000-0x000007FEF694D000-memory.dmp

memory/2808-11-0x00000000005A0000-0x0000000000620000-memory.dmp

memory/2808-9-0x000007FEF5FB0000-0x000007FEF694D000-memory.dmp

memory/2808-12-0x000007FEF5FB0000-0x000007FEF694D000-memory.dmp

memory/2808-13-0x000007FEF5FB0000-0x000007FEF694D000-memory.dmp

memory/2808-15-0x00000000005A0000-0x0000000000620000-memory.dmp

memory/2808-16-0x000007FEF5FB0000-0x000007FEF694D000-memory.dmp

memory/2808-17-0x00000000005A0000-0x0000000000620000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-21 04:23

Reported

2024-01-21 04:25

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6c579929873c53c8aeac1eec5fd9cd43.exe"

Signatures

njRAT/Bladabindi

trojan njrat

Modifies Windows Firewall

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\netsh.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\6c579929873c53c8aeac1eec5fd9cd43.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c544fdd3a27573c904e8127ab07c610e.exe C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c544fdd3a27573c904e8127ab07c610e.exe C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c544fdd3a27573c904e8127ab07c610e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\winhelper.exe\" .." C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c544fdd3a27573c904e8127ab07c610e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\winhelper.exe\" .." C:\Users\Admin\AppData\Local\Temp\winhelper.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\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\winhelper.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6c579929873c53c8aeac1eec5fd9cd43.exe

"C:\Users\Admin\AppData\Local\Temp\6c579929873c53c8aeac1eec5fd9cd43.exe"

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

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

C:\Windows\SYSTEM32\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\winhelper.exe" "winhelper.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 10.143.101.95.in-addr.arpa udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp
US 8.8.8.8:53 winfix.ddns.net udp

Files

memory/4884-1-0x000000001BB60000-0x000000001C02E000-memory.dmp

memory/4884-0-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/4884-2-0x00000000010E0000-0x000000000117C000-memory.dmp

memory/4884-3-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/4884-4-0x00000000010D0000-0x00000000010E0000-memory.dmp

memory/4884-5-0x0000000000EC0000-0x0000000000EC8000-memory.dmp

memory/4884-6-0x0000000001180000-0x000000000118C000-memory.dmp

memory/4884-7-0x000000001D130000-0x000000001D1D6000-memory.dmp

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

MD5 6c579929873c53c8aeac1eec5fd9cd43
SHA1 dd1bb4131e623621167f7787e502901b3dc290e7
SHA256 ca1cfa6d6fbad23c5096a460c845a4426eda5895b24db04b562253d29332e866
SHA512 7f9707963f6a27fb13329f705664749bf68905d5d12dbb2c546d425520c65a41cd1e82f894ff3c805c46b97de01126e2cd12b452ee9beffa232ec32e540bba28

memory/4884-20-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/3764-21-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/3764-22-0x0000000000A70000-0x0000000000A80000-memory.dmp

memory/3764-23-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/3764-25-0x0000000000A70000-0x0000000000A80000-memory.dmp

memory/3764-26-0x00007FFE7AFC0000-0x00007FFE7B961000-memory.dmp

memory/3764-27-0x0000000000A70000-0x0000000000A80000-memory.dmp

memory/3764-28-0x0000000000A70000-0x0000000000A80000-memory.dmp