Malware Analysis Report

2024-10-23 20:47

Sample ID 240528-rlcm8agf2z
Target 4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe
SHA256 4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e
Tags
njrat 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

4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e

Threat Level: Known bad

The file 4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe was found to be: Known bad.

Malicious Activity Summary

njrat evasion persistence trojan

njRAT/Bladabindi

Modifies Windows Firewall

Drops startup file

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-28 14:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-28 14:16

Reported

2024-05-28 14:19

Platform

win7-20240221-en

Max time kernel

149s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\69fac9529d1ca1e2d66c9edf70af1f9d.exe C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\69fac9529d1ca1e2d66c9edf70af1f9d.exe C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.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\69fac9529d1ca1e2d66c9edf70af1f9d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\microsoftx.exe\" .." C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\69fac9529d1ca1e2d66c9edf70af1f9d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\microsoftx.exe\" .." C:\Users\Admin\AppData\Local\Temp\microsoftx.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\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe

"C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe"

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 seznam.zapto.org udp
GB 45.76.129.156:1177 seznam.zapto.org tcp

Files

memory/1740-0-0x00000000742C1000-0x00000000742C2000-memory.dmp

memory/1740-1-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/1740-2-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/1740-3-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/1740-4-0x00000000742C0000-0x000000007486B000-memory.dmp

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

MD5 28d0b2cee398061a43e4b5cd5274d1cc
SHA1 e9c41579e65742d367de7a2967e3f381514662d3
SHA256 4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e
SHA512 be28f02c86c4a8bc815835b9e9d8cea92806b77419432805acc5a005172889a8762ccba506dcf513b7e4d2919367ee42af6eecd249b3e0725d153636f37c7ee8

memory/2612-13-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/1740-12-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/2612-14-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/2612-15-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/2612-17-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/2612-18-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/2612-19-0x00000000742C0000-0x000000007486B000-memory.dmp

memory/2612-20-0x00000000742C0000-0x000000007486B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-28 14:16

Reported

2024-05-28 14:19

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe N/A

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\69fac9529d1ca1e2d66c9edf70af1f9d.exe C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\69fac9529d1ca1e2d66c9edf70af1f9d.exe C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\69fac9529d1ca1e2d66c9edf70af1f9d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\microsoftx.exe\" .." C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\69fac9529d1ca1e2d66c9edf70af1f9d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\microsoftx.exe\" .." C:\Users\Admin\AppData\Local\Temp\microsoftx.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\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\microsoftx.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe

"C:\Users\Admin\AppData\Local\Temp\4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e.exe"

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 seznam.zapto.org udp
GB 45.76.129.156:1177 seznam.zapto.org tcp
US 8.8.8.8:53 156.129.76.45.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 98.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 97.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa 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 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 24.173.189.20.in-addr.arpa udp

Files

memory/2264-0-0x0000000074A02000-0x0000000074A03000-memory.dmp

memory/2264-1-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2264-2-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2264-3-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2264-4-0x0000000074A00000-0x0000000074FB1000-memory.dmp

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

MD5 28d0b2cee398061a43e4b5cd5274d1cc
SHA1 e9c41579e65742d367de7a2967e3f381514662d3
SHA256 4b8d9773b48344c7745f829df9f3ad3a4a68358f0067c09603ad18a742e8cc0e
SHA512 be28f02c86c4a8bc815835b9e9d8cea92806b77419432805acc5a005172889a8762ccba506dcf513b7e4d2919367ee42af6eecd249b3e0725d153636f37c7ee8

memory/2108-17-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-18-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-19-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-20-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2264-21-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-22-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-24-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-25-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-26-0x0000000074A00000-0x0000000074FB1000-memory.dmp

memory/2108-27-0x0000000074A00000-0x0000000074FB1000-memory.dmp