Malware Analysis Report

2025-01-22 13:08

Sample ID 240718-bpbmbs1hmg
Target 4266162511897dafbb0e9428da74d3a0N.exe
SHA256 f4cd82ce764e25ecbf3b5c7eae612b80ead673fd0972bbb2ade03d13e7cb04d0
Tags
njrat hhhhhhhhhhhh 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

f4cd82ce764e25ecbf3b5c7eae612b80ead673fd0972bbb2ade03d13e7cb04d0

Threat Level: Known bad

The file 4266162511897dafbb0e9428da74d3a0N.exe was found to be: Known bad.

Malicious Activity Summary

njrat hhhhhhhhhhhh evasion persistence privilege_escalation trojan

njRAT/Bladabindi

Modifies Windows Firewall

Executes dropped EXE

Drops startup file

Checks computer location settings

Drops desktop.ini file(s)

Adds Run key to start application

Drops file in Windows directory

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-18 01:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-18 01:18

Reported

2024-07-18 01:20

Platform

win7-20240704-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.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\f656afb493902a1bbc08f2be8001048a.exe C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f656afb493902a1bbc08f2be8001048a.exe C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f656afb493902a1bbc08f2be8001048a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .." C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\f656afb493902a1bbc08f2be8001048a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .." C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
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
Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh 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\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe

"C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe"

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

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

C:\Windows\system32\netsh.exe

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

Network

Country Destination Domain Proto
US 147.185.221.20:36100 tcp
US 147.185.221.20:36100 tcp
US 147.185.221.20:36100 tcp
US 147.185.221.20:36100 tcp
US 147.185.221.20:36100 tcp

Files

memory/1140-0-0x000007FEF596E000-0x000007FEF596F000-memory.dmp

memory/1140-1-0x0000000000730000-0x0000000000738000-memory.dmp

memory/1140-2-0x00000000006F0000-0x00000000006FC000-memory.dmp

memory/1140-3-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

memory/1140-4-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

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

MD5 4266162511897dafbb0e9428da74d3a0
SHA1 eb2541ece45e3f3a66236be147389c785a8b3560
SHA256 f4cd82ce764e25ecbf3b5c7eae612b80ead673fd0972bbb2ade03d13e7cb04d0
SHA512 96b9f524d625b7febf3d6597114514bc455437a7e5fea440bb5a68fac0d18cbc41763c16f6688656a834112ac87e295fcf9313777899fe406d5392eb601ba921

memory/1140-10-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

memory/2768-11-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

memory/2768-12-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

memory/2768-14-0x000007FEF56B0000-0x000007FEF604D000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-18 01:18

Reported

2024-07-18 01:20

Platform

win10v2004-20240709-en

Max time kernel

120s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.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-1-5-21-701583114-2636601053-947405450-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f656afb493902a1bbc08f2be8001048a.exe C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f656afb493902a1bbc08f2be8001048a.exe C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-701583114-2636601053-947405450-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f656afb493902a1bbc08f2be8001048a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .." C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\f656afb493902a1bbc08f2be8001048a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\chrome.exe\" .." C:\Users\Admin\AppData\Local\Temp\chrome.exe N/A

Drops desktop.ini file(s)

Description Indicator Process Target
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\assembly C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe N/A
File created C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe N/A
File opened for modification C:\Windows\assembly\Desktop.ini C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe

"C:\Users\Admin\AppData\Local\Temp\4266162511897dafbb0e9428da74d3a0N.exe"

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

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

C:\Windows\SYSTEM32\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 147.185.221.20:36100 tcp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp
US 147.185.221.20:36100 tcp
US 147.185.221.20:36100 tcp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 147.185.221.20:36100 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.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 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 147.185.221.20:36100 tcp

Files

memory/4680-0-0x00007FFFA3685000-0x00007FFFA3686000-memory.dmp

memory/4680-2-0x000000001BD10000-0x000000001C1DE000-memory.dmp

memory/4680-1-0x00007FFFA33D0000-0x00007FFFA3D71000-memory.dmp

memory/4680-3-0x000000001C280000-0x000000001C31C000-memory.dmp

memory/4680-4-0x000000001C3D0000-0x000000001C476000-memory.dmp

memory/4680-5-0x0000000001170000-0x0000000001178000-memory.dmp

memory/4680-8-0x0000000001160000-0x000000000116C000-memory.dmp

memory/4680-9-0x00007FFFA33D0000-0x00007FFFA3D71000-memory.dmp

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

MD5 4266162511897dafbb0e9428da74d3a0
SHA1 eb2541ece45e3f3a66236be147389c785a8b3560
SHA256 f4cd82ce764e25ecbf3b5c7eae612b80ead673fd0972bbb2ade03d13e7cb04d0
SHA512 96b9f524d625b7febf3d6597114514bc455437a7e5fea440bb5a68fac0d18cbc41763c16f6688656a834112ac87e295fcf9313777899fe406d5392eb601ba921

memory/4680-22-0x00007FFFA33D0000-0x00007FFFA3D71000-memory.dmp

memory/2640-23-0x00007FFFA33D0000-0x00007FFFA3D71000-memory.dmp

memory/2640-24-0x00007FFFA33D0000-0x00007FFFA3D71000-memory.dmp

memory/2640-25-0x00007FFFA33D0000-0x00007FFFA3D71000-memory.dmp

memory/2640-27-0x000000001B580000-0x000000001B588000-memory.dmp

memory/2640-28-0x00007FFFA33D0000-0x00007FFFA3D71000-memory.dmp