Malware Analysis Report

2025-03-15 06:23

Sample ID 240929-gyh1navgkf
Target fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118
SHA256 2fda3eebcc3e73d2fcd4b5a3c5092b3b0b1cf56fb6e9915de9f69bdbc1dd40cb
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

2fda3eebcc3e73d2fcd4b5a3c5092b3b0b1cf56fb6e9915de9f69bdbc1dd40cb

Threat Level: Known bad

The file fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

hacked njrat discovery evasion persistence privilege_escalation trojan

njRAT/Bladabindi

Njrat family

Modifies Windows Firewall

Checks computer location settings

Drops startup file

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Unsigned PE

Event Triggered Execution: Netsh Helper DLL

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-29 06:12

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-29 06:12

Reported

2024-09-29 06:15

Platform

win7-20240708-en

Max time kernel

149s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.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\68ff17a2ca62d590e8a5b84f0c8ebb62.exe C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\68ff17a2ca62d590e8a5b84f0c8ebb62.exe C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.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\68ff17a2ca62d590e8a5b84f0c8ebb62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\MSBuild.exe\" .." C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\68ff17a2ca62d590e8a5b84f0c8ebb62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\MSBuild.exe\" .." C:\Users\Admin\AppData\Local\Temp\MSBuild.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\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MSBuild.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\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 javaclients.hopto.org udp

Files

memory/2528-0-0x0000000074D01000-0x0000000074D02000-memory.dmp

memory/2528-1-0x0000000074D00000-0x00000000752AB000-memory.dmp

memory/2528-2-0x0000000074D00000-0x00000000752AB000-memory.dmp

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

MD5 fdf1fa9d34f84fdc822fbfde0cc45c62
SHA1 2440ac917fc11364d8c2c845e8c349a82681527d
SHA256 2fda3eebcc3e73d2fcd4b5a3c5092b3b0b1cf56fb6e9915de9f69bdbc1dd40cb
SHA512 4e256b5074910788ca837135bd4701711aa4709ff9ef90dbe9b36f20c86ad0013d0dc3d3c276db105c267534fe4b859ae881c781b77d39402f4d4d3d78d68ede

memory/2892-11-0x0000000074D00000-0x00000000752AB000-memory.dmp

memory/2528-10-0x0000000074D00000-0x00000000752AB000-memory.dmp

memory/2892-12-0x0000000074D00000-0x00000000752AB000-memory.dmp

memory/2892-14-0x0000000074D00000-0x00000000752AB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-29 06:12

Reported

2024-09-29 06:15

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\68ff17a2ca62d590e8a5b84f0c8ebb62.exe C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\68ff17a2ca62d590e8a5b84f0c8ebb62.exe C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\68ff17a2ca62d590e8a5b84f0c8ebb62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\MSBuild.exe\" .." C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\68ff17a2ca62d590e8a5b84f0c8ebb62 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\MSBuild.exe\" .." C:\Users\Admin\AppData\Local\Temp\MSBuild.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:\Windows\SysWOW64\netsh.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\MSBuild.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\fdf1fa9d34f84fdc822fbfde0cc45c62_JaffaCakes118.exe"

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=3852,i,15436195446242760253,4000484513008731869,262144 --variations-seed-version --mojo-platform-channel-handle=3964 /prefetch:8

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

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

C:\Windows\SysWOW64\netsh.exe

netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\MSBuild.exe" "MSBuild.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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp
US 8.8.8.8:53 javaclients.hopto.org udp

Files

memory/2080-0-0x0000000074602000-0x0000000074603000-memory.dmp

memory/2080-1-0x0000000074600000-0x0000000074BB1000-memory.dmp

memory/2080-2-0x0000000074600000-0x0000000074BB1000-memory.dmp

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

MD5 fdf1fa9d34f84fdc822fbfde0cc45c62
SHA1 2440ac917fc11364d8c2c845e8c349a82681527d
SHA256 2fda3eebcc3e73d2fcd4b5a3c5092b3b0b1cf56fb6e9915de9f69bdbc1dd40cb
SHA512 4e256b5074910788ca837135bd4701711aa4709ff9ef90dbe9b36f20c86ad0013d0dc3d3c276db105c267534fe4b859ae881c781b77d39402f4d4d3d78d68ede

memory/2080-12-0x0000000074600000-0x0000000074BB1000-memory.dmp

memory/2712-13-0x0000000074600000-0x0000000074BB1000-memory.dmp

memory/2712-14-0x0000000074600000-0x0000000074BB1000-memory.dmp

memory/2712-16-0x0000000074600000-0x0000000074BB1000-memory.dmp