Malware Analysis Report

2025-03-15 06:24

Sample ID 240927-yjxzpsyeqg
Target 0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe
SHA256 0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715
Tags
hacked njrat 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

0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715

Threat Level: Known bad

The file 0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe was found to be: Known bad.

Malicious Activity Summary

hacked njrat discovery evasion persistence privilege_escalation trojan

Njrat family

njRAT/Bladabindi

Modifies Windows Firewall

Loads dropped DLL

Executes dropped EXE

Checks computer location settings

Event Triggered Execution: Netsh Helper DLL

System Location Discovery: System Language Discovery

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-27 19:49

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-27 19:49

Reported

2024-09-27 19:52

Platform

win7-20240903-en

Max time kernel

145s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.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\Roaming\Severn.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\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\Severn.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe

"C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe"

C:\Users\Admin\AppData\Roaming\Severn.exe

"C:\Users\Admin\AppData\Roaming\Severn.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Severn.exe" "Severn.exe" ENABLE

Network

Country Destination Domain Proto
TH 103.82.249.74:5552 tcp
TH 103.82.249.74:5552 tcp
TH 103.82.249.74:5552 tcp
TH 103.82.249.74:5552 tcp
TH 103.82.249.74:5552 tcp
TH 103.82.249.74:5552 tcp

Files

memory/1120-0-0x0000000074151000-0x0000000074152000-memory.dmp

memory/1120-1-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/1120-2-0x0000000074150000-0x00000000746FB000-memory.dmp

\Users\Admin\AppData\Roaming\Severn.exe

MD5 7eeb03f03f522d069360a11605d8c36f
SHA1 c822086cc3c0aeab9940880cccec95096d3fe5a4
SHA256 0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715
SHA512 1d9d9d2915c2cc53840539bf71b4d200ed3744159dbdb56a85010f12600b891b34941fecdf455886c00a4b96ccbe1c903b3db7a8842a177ba1f99ac0db442b61

memory/1120-10-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2312-11-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2312-13-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2312-12-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2312-14-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2312-15-0x0000000074150000-0x00000000746FB000-memory.dmp

memory/2312-16-0x0000000074150000-0x00000000746FB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-27 19:49

Reported

2024-09-27 19:52

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe"

Signatures

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.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\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Roaming\Severn.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\Severn.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe

"C:\Users\Admin\AppData\Local\Temp\0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715.exe"

C:\Users\Admin\AppData\Roaming\Severn.exe

"C:\Users\Admin\AppData\Roaming\Severn.exe"

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Severn.exe" "Severn.exe" ENABLE

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4380,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4188 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
TH 103.82.249.74:5552 tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
TH 103.82.249.74:5552 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
TH 103.82.249.74:5552 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
TH 103.82.249.74:5552 tcp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
TH 103.82.249.74:5552 tcp
TH 103.82.249.74:5552 tcp

Files

memory/4112-0-0x0000000075522000-0x0000000075523000-memory.dmp

memory/4112-1-0x0000000075520000-0x0000000075AD1000-memory.dmp

memory/4112-2-0x0000000075520000-0x0000000075AD1000-memory.dmp

C:\Users\Admin\AppData\Roaming\Severn.exe

MD5 7eeb03f03f522d069360a11605d8c36f
SHA1 c822086cc3c0aeab9940880cccec95096d3fe5a4
SHA256 0dfca39c7ebcca00525b6d29fb720a32396a12716322609498528bdcf91d8715
SHA512 1d9d9d2915c2cc53840539bf71b4d200ed3744159dbdb56a85010f12600b891b34941fecdf455886c00a4b96ccbe1c903b3db7a8842a177ba1f99ac0db442b61

memory/3476-13-0x0000000075520000-0x0000000075AD1000-memory.dmp

memory/4112-12-0x0000000075520000-0x0000000075AD1000-memory.dmp

memory/3476-14-0x0000000075520000-0x0000000075AD1000-memory.dmp

memory/3476-15-0x0000000075520000-0x0000000075AD1000-memory.dmp