Malware Analysis Report

2024-10-19 08:09

Sample ID 240530-kvtjrsdd67
Target 83a46305d94b60075488f3137e7a0d2c_JaffaCakes118
SHA256 e3e9173202c735aec275bb41a1511c5ea586ec1e60a2d55f49fa6c2b9663d061
Tags
legend 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

e3e9173202c735aec275bb41a1511c5ea586ec1e60a2d55f49fa6c2b9663d061

Threat Level: Known bad

The file 83a46305d94b60075488f3137e7a0d2c_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

legend njrat evasion persistence trojan

Njrat family

njRAT/Bladabindi

Modifies Windows Firewall

Drops startup file

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 08:55

Signatures

Njrat family

njrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-30 08:55

Reported

2024-05-30 08:58

Platform

win7-20240221-en

Max time kernel

149s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_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\5acedeb8e640188ce371b7e8d44896b3.exe C:\Users\Admin\AppData\Local\Temp\System.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5acedeb8e640188ce371b7e8d44896b3.exe C:\Users\Admin\AppData\Local\Temp\System.exe N/A

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\5acedeb8e640188ce371b7e8d44896b3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\5acedeb8e640188ce371b7e8d44896b3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." C:\Users\Admin\AppData\Local\Temp\System.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\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp

Files

memory/2964-0-0x0000000074D51000-0x0000000074D52000-memory.dmp

memory/2964-1-0x0000000074D50000-0x00000000752FB000-memory.dmp

memory/2964-2-0x0000000074D50000-0x00000000752FB000-memory.dmp

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

MD5 83a46305d94b60075488f3137e7a0d2c
SHA1 213199727785440d87e4d22f344f4114ea739a26
SHA256 e3e9173202c735aec275bb41a1511c5ea586ec1e60a2d55f49fa6c2b9663d061
SHA512 d6905881278283850308e2cb81f1e798f7cbb33bdb2c3b2315505be64c89239d232a1f23c0c84b707ceb2fc92082ef711ce5c6eb105706324b274217671f6cdd

memory/2964-11-0x0000000074D50000-0x00000000752FB000-memory.dmp

memory/3016-10-0x0000000074D50000-0x00000000752FB000-memory.dmp

memory/3016-13-0x0000000074D50000-0x00000000752FB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 08:55

Reported

2024-05-30 08:58

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_JaffaCakes118.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5acedeb8e640188ce371b7e8d44896b3.exe C:\Users\Admin\AppData\Local\Temp\System.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5acedeb8e640188ce371b7e8d44896b3.exe C:\Users\Admin\AppData\Local\Temp\System.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5acedeb8e640188ce371b7e8d44896b3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\5acedeb8e640188ce371b7e8d44896b3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .." C:\Users\Admin\AppData\Local\Temp\System.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\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\System.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\83a46305d94b60075488f3137e7a0d2c_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.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
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
N/A 127.0.0.1:1177 tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
N/A 127.0.0.1:1177 tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp
N/A 127.0.0.1:1177 tcp

Files

memory/400-0-0x00000000751F2000-0x00000000751F3000-memory.dmp

memory/400-1-0x00000000751F0000-0x00000000757A1000-memory.dmp

memory/400-2-0x00000000751F0000-0x00000000757A1000-memory.dmp

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

MD5 83a46305d94b60075488f3137e7a0d2c
SHA1 213199727785440d87e4d22f344f4114ea739a26
SHA256 e3e9173202c735aec275bb41a1511c5ea586ec1e60a2d55f49fa6c2b9663d061
SHA512 d6905881278283850308e2cb81f1e798f7cbb33bdb2c3b2315505be64c89239d232a1f23c0c84b707ceb2fc92082ef711ce5c6eb105706324b274217671f6cdd

memory/400-12-0x00000000751F0000-0x00000000757A1000-memory.dmp

memory/4552-13-0x00000000751F0000-0x00000000757A1000-memory.dmp

memory/4552-15-0x00000000751F0000-0x00000000757A1000-memory.dmp