Malware Analysis Report

2025-01-22 13:12

Sample ID 240720-gy4mcszcmn
Target 5aa54b79bb6bc959592bd0d44072aa20N.exe
SHA256 f931c3d38402a25748eae9af54bb639e33d9b318f26550eb2ebd56abac3cf30e
Tags
njrat an0nym0us 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

f931c3d38402a25748eae9af54bb639e33d9b318f26550eb2ebd56abac3cf30e

Threat Level: Known bad

The file 5aa54b79bb6bc959592bd0d44072aa20N.exe was found to be: Known bad.

Malicious Activity Summary

njrat an0nym0us evasion persistence privilege_escalation trojan

njRAT/Bladabindi

Modifies Windows Firewall

Checks computer location settings

Executes dropped EXE

Drops startup file

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Event Triggered Execution: Netsh Helper DLL

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-20 06:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-20 06:13

Reported

2024-07-20 06:15

Platform

win7-20240704-en

Max time kernel

29s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5aa54b79bb6bc959592bd0d44072aa20N.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\526da8c3cf38c27132d513f653a25a62.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526da8c3cf38c27132d513f653a25a62.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\526da8c3cf38c27132d513f653a25a62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .." C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\526da8c3cf38c27132d513f653a25a62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .." C:\Users\Admin\AppData\Local\Temp\svchost.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

Processes

C:\Users\Admin\AppData\Local\Temp\5aa54b79bb6bc959592bd0d44072aa20N.exe

"C:\Users\Admin\AppData\Local\Temp\5aa54b79bb6bc959592bd0d44072aa20N.exe"

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

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

C:\Windows\system32\netsh.exe

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2724 -s 652

Network

N/A

Files

memory/2028-0-0x000007FEF6003000-0x000007FEF6004000-memory.dmp

memory/2028-1-0x0000000000A00000-0x0000000000A2A000-memory.dmp

memory/2028-2-0x00000000003C0000-0x00000000003E4000-memory.dmp

memory/2028-3-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

memory/2028-4-0x00000000003F0000-0x0000000000416000-memory.dmp

memory/2028-5-0x0000000002120000-0x0000000002144000-memory.dmp

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

MD5 5aa54b79bb6bc959592bd0d44072aa20
SHA1 394f4699e128e7eb94a83159f207c544c1225a2a
SHA256 f931c3d38402a25748eae9af54bb639e33d9b318f26550eb2ebd56abac3cf30e
SHA512 4081583e7a27d0c889048acab00f692d0a8eda031aae3e6dd7a36e1f81e6c0a3d016ba421f1184670853829d398c20d86c4acda7d5bf70fa2f925ade2b88ef9f

memory/2724-12-0x0000000000370000-0x0000000000394000-memory.dmp

memory/2724-11-0x0000000000040000-0x000000000006A000-memory.dmp

memory/2724-13-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

memory/2028-14-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

memory/2724-15-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

memory/2724-17-0x000007FEF6000000-0x000007FEF69EC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-20 06:13

Reported

2024-07-20 06:15

Platform

win10v2004-20240709-en

Max time kernel

101s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5aa54b79bb6bc959592bd0d44072aa20N.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-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\5aa54b79bb6bc959592bd0d44072aa20N.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526da8c3cf38c27132d513f653a25a62.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526da8c3cf38c27132d513f653a25a62.exe C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\526da8c3cf38c27132d513f653a25a62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .." C:\Users\Admin\AppData\Local\Temp\svchost.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\526da8c3cf38c27132d513f653a25a62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .." C:\Users\Admin\AppData\Local\Temp\svchost.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

Processes

C:\Users\Admin\AppData\Local\Temp\5aa54b79bb6bc959592bd0d44072aa20N.exe

"C:\Users\Admin\AppData\Local\Temp\5aa54b79bb6bc959592bd0d44072aa20N.exe"

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

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

C:\Windows\SYSTEM32\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/1732-0-0x00007FFE87603000-0x00007FFE87605000-memory.dmp

memory/1732-1-0x0000000000EB0000-0x0000000000EDA000-memory.dmp

memory/1732-2-0x0000000001680000-0x00000000016A4000-memory.dmp

memory/1732-3-0x00000000016B0000-0x00000000016D6000-memory.dmp

memory/1732-4-0x0000000003130000-0x0000000003154000-memory.dmp

memory/1732-5-0x00007FFE87600000-0x00007FFE880C1000-memory.dmp

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

MD5 5aa54b79bb6bc959592bd0d44072aa20
SHA1 394f4699e128e7eb94a83159f207c544c1225a2a
SHA256 f931c3d38402a25748eae9af54bb639e33d9b318f26550eb2ebd56abac3cf30e
SHA512 4081583e7a27d0c889048acab00f692d0a8eda031aae3e6dd7a36e1f81e6c0a3d016ba421f1184670853829d398c20d86c4acda7d5bf70fa2f925ade2b88ef9f

memory/1732-18-0x00007FFE87600000-0x00007FFE880C1000-memory.dmp

memory/1720-19-0x00007FFE87600000-0x00007FFE880C1000-memory.dmp

memory/1720-21-0x00007FFE87600000-0x00007FFE880C1000-memory.dmp