Malware Analysis Report

2025-01-22 13:51

Sample ID 240902-clfybayejp
Target e4845dcb52a3c7f7a8d483d73ff03510N.exe
SHA256 dcabd39d5ccdeb0d94dc2072903f270aa5d68dacc3d4149a9d8e6b90e8396e55
Tags
njrat discovery evasion persistence privilege_escalation trojan hacked
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

dcabd39d5ccdeb0d94dc2072903f270aa5d68dacc3d4149a9d8e6b90e8396e55

Threat Level: Known bad

The file e4845dcb52a3c7f7a8d483d73ff03510N.exe was found to be: Known bad.

Malicious Activity Summary

njrat discovery evasion persistence privilege_escalation trojan hacked

Njrat family

njRAT/Bladabindi

Modifies Windows Firewall

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-02 02:09

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-02 02:09

Reported

2024-09-02 02:11

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\71d4a517242481fcbbd31dd50ae04a6b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\serve2r.exe\" .." C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\71d4a517242481fcbbd31dd50ae04a6b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\serve2r.exe\" .." C:\Users\Admin\AppData\Local\Temp\serve2r.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\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\netsh.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.exe

"C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.exe"

C:\Users\Admin\AppData\Local\Temp\serve2r.exe

"C:\Users\Admin\AppData\Local\Temp\serve2r.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\serve2r.exe" "serve2r.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp

Files

memory/4980-0-0x0000000075262000-0x0000000075263000-memory.dmp

memory/4980-1-0x0000000075260000-0x0000000075811000-memory.dmp

memory/4980-2-0x0000000075260000-0x0000000075811000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\serve2r.exe

MD5 e4845dcb52a3c7f7a8d483d73ff03510
SHA1 0aa86ab7e571598dc2498ab1136ade10788b05c1
SHA256 dcabd39d5ccdeb0d94dc2072903f270aa5d68dacc3d4149a9d8e6b90e8396e55
SHA512 2737fe0cc58357bcf408ea3de1b54286a46d56666114a30772e574d2711090495d7f29fc6e3587d4102328a6d73cb68fd20c4667e5f06708f5f9fca282cdb9d2

memory/4980-13-0x0000000075260000-0x0000000075811000-memory.dmp

memory/1520-12-0x0000000075260000-0x0000000075811000-memory.dmp

memory/1520-14-0x0000000075260000-0x0000000075811000-memory.dmp

memory/1520-15-0x0000000075260000-0x0000000075811000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-02 02:09

Reported

2024-09-02 02:11

Platform

win7-20240708-en

Max time kernel

119s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.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\71d4a517242481fcbbd31dd50ae04a6b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\serve2r.exe\" .." C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Run\71d4a517242481fcbbd31dd50ae04a6b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\serve2r.exe\" .." C:\Users\Admin\AppData\Local\Temp\serve2r.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\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\netsh.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\serve2r.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.exe

"C:\Users\Admin\AppData\Local\Temp\e4845dcb52a3c7f7a8d483d73ff03510N.exe"

C:\Users\Admin\AppData\Local\Temp\serve2r.exe

"C:\Users\Admin\AppData\Local\Temp\serve2r.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\serve2r.exe" "serve2r.exe" ENABLE

Network

Country Destination Domain Proto
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp
N/A 127.0.0.1:5552 tcp

Files

memory/1964-0-0x0000000074B41000-0x0000000074B42000-memory.dmp

memory/1964-1-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/1964-2-0x0000000074B40000-0x00000000750EB000-memory.dmp

\Users\Admin\AppData\Local\Temp\serve2r.exe

MD5 e4845dcb52a3c7f7a8d483d73ff03510
SHA1 0aa86ab7e571598dc2498ab1136ade10788b05c1
SHA256 dcabd39d5ccdeb0d94dc2072903f270aa5d68dacc3d4149a9d8e6b90e8396e55
SHA512 2737fe0cc58357bcf408ea3de1b54286a46d56666114a30772e574d2711090495d7f29fc6e3587d4102328a6d73cb68fd20c4667e5f06708f5f9fca282cdb9d2

memory/2304-10-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2304-12-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/1964-11-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2304-13-0x0000000074B40000-0x00000000750EB000-memory.dmp

memory/2304-14-0x0000000074B40000-0x00000000750EB000-memory.dmp