Malware Analysis Report

2025-01-22 13:47

Sample ID 240830-mm9bcs1cpq
Target fa751a76c642d964037f4bd88db04e30N.exe
SHA256 36e5ac444af1ddf8dfa1f67132ec053430ef93c2212a1b6463bc165bd2d00b49
Tags
njrat hacked discovery 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

36e5ac444af1ddf8dfa1f67132ec053430ef93c2212a1b6463bc165bd2d00b49

Threat Level: Known bad

The file fa751a76c642d964037f4bd88db04e30N.exe was found to be: Known bad.

Malicious Activity Summary

njrat hacked discovery evasion persistence privilege_escalation trojan

njRAT/Bladabindi

Modifies Windows Firewall

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

System Time Discovery

Event Triggered Execution: Netsh Helper DLL

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-30 10:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-30 10:36

Reported

2024-08-30 10:38

Platform

win7-20240704-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fa751a76c642d964037f4bd88db04e30N.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

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Microsoft\Windows\CurrentVersion\Run\3fb8a2ca84b8925e17882e2cb765f819 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RuntimeBroker.exe\" .." C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3fb8a2ca84b8925e17882e2cb765f819 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RuntimeBroker.exe\" .." C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe N/A

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\system32\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\system32\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\system32\netsh.exe N/A

System Time Discovery

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\fa751a76c642d964037f4bd88db04e30N.exe

"C:\Users\Admin\AppData\Local\Temp\fa751a76c642d964037f4bd88db04e30N.exe"

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

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

C:\Windows\system32\netsh.exe

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

Network

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

Files

memory/808-0-0x000007FEF5B2E000-0x000007FEF5B2F000-memory.dmp

memory/808-1-0x00000000004E0000-0x00000000004EC000-memory.dmp

memory/808-2-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

memory/808-3-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

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

MD5 fa751a76c642d964037f4bd88db04e30
SHA1 02c7346af3816c4f61a4a47c016bdfd0c88afedd
SHA256 36e5ac444af1ddf8dfa1f67132ec053430ef93c2212a1b6463bc165bd2d00b49
SHA512 6680b1e37d872755ef2e584724047f3e7d7857f460d61eb7484f5490e24c58453782bbc0782c14f3f34940efe5cdc6ed5c350596ced1e0ed3611114c920f3fdf

memory/808-11-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

memory/2776-12-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

memory/2776-13-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

memory/2776-14-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

memory/2776-15-0x000007FEF5870000-0x000007FEF620D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-30 10:36

Reported

2024-08-30 10:38

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fa751a76c642d964037f4bd88db04e30N.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\fa751a76c642d964037f4bd88db04e30N.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3fb8a2ca84b8925e17882e2cb765f819 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RuntimeBroker.exe\" .." C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3fb8a2ca84b8925e17882e2cb765f819 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RuntimeBroker.exe\" .." C:\Users\Admin\AppData\Local\Temp\RuntimeBroker.exe N/A

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\SYSTEM32\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\SYSTEM32\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh C:\Windows\SYSTEM32\netsh.exe N/A

System Time Discovery

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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\fa751a76c642d964037f4bd88db04e30N.exe

"C:\Users\Admin\AppData\Local\Temp\fa751a76c642d964037f4bd88db04e30N.exe"

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

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

C:\Windows\SYSTEM32\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 52.111.229.48:443 tcp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa 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 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 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp
US 8.8.8.8:53 bytet.ddns.net udp

Files

memory/3176-0-0x00007FFE8FF95000-0x00007FFE8FF96000-memory.dmp

memory/3176-1-0x00007FFE8FCE0000-0x00007FFE90681000-memory.dmp

memory/3176-2-0x00007FFE8FCE0000-0x00007FFE90681000-memory.dmp

memory/3176-3-0x000000001C0F0000-0x000000001C5BE000-memory.dmp

memory/3176-4-0x000000001C660000-0x000000001C6FC000-memory.dmp

memory/3176-6-0x000000001C830000-0x000000001C8D6000-memory.dmp

memory/3176-5-0x000000001C760000-0x000000001C76C000-memory.dmp

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

MD5 fa751a76c642d964037f4bd88db04e30
SHA1 02c7346af3816c4f61a4a47c016bdfd0c88afedd
SHA256 36e5ac444af1ddf8dfa1f67132ec053430ef93c2212a1b6463bc165bd2d00b49
SHA512 6680b1e37d872755ef2e584724047f3e7d7857f460d61eb7484f5490e24c58453782bbc0782c14f3f34940efe5cdc6ed5c350596ced1e0ed3611114c920f3fdf

memory/2780-20-0x00007FFE8FCE0000-0x00007FFE90681000-memory.dmp

memory/3176-19-0x00007FFE8FCE0000-0x00007FFE90681000-memory.dmp

memory/2780-21-0x00007FFE8FCE0000-0x00007FFE90681000-memory.dmp

memory/2780-22-0x000000001BB60000-0x000000001BB68000-memory.dmp

memory/2780-23-0x00007FFE8FCE0000-0x00007FFE90681000-memory.dmp