Malware Analysis Report

2024-10-19 08:06

Sample ID 240530-vvzqwsef9z
Target 84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118
SHA256 312b0eb7bfb4618339d424ce828b4956c50bab132732f0813897e476f9a33014
Tags
dark 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

312b0eb7bfb4618339d424ce828b4956c50bab132732f0813897e476f9a33014

Threat Level: Known bad

The file 84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

dark njrat evasion persistence trojan

njRAT/Bladabindi

Njrat family

Modifies Windows Firewall

Drops startup file

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-30 17:19

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 17:19

Reported

2024-05-30 17:21

Platform

win7-20231129-en

Max time kernel

149s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_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\d30e81b53079ab01f7442a2f86c7357d.exe C:\Users\Admin\AppData\Roaming\chrome.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d30e81b53079ab01f7442a2f86c7357d.exe C:\Users\Admin\AppData\Roaming\chrome.exe N/A

Executes dropped EXE

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\d30e81b53079ab01f7442a2f86c7357d = "\"C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe\" .." C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\d30e81b53079ab01f7442a2f86c7357d = "\"C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe\" .." C:\Users\Admin\AppData\Roaming\chrome.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp

Files

memory/2848-0-0x00000000748E1000-0x00000000748E2000-memory.dmp

memory/2848-1-0x00000000748E0000-0x0000000074E8B000-memory.dmp

memory/2848-2-0x00000000748E0000-0x0000000074E8B000-memory.dmp

\Users\Admin\AppData\Roaming\chrome.exe

MD5 84e19fdbbf684408ba2eeb96d01f1219
SHA1 e8ef86328b4fc6de391fdebe69931546bcb29adb
SHA256 312b0eb7bfb4618339d424ce828b4956c50bab132732f0813897e476f9a33014
SHA512 5b79f2c7a9c3e4ead5eb03cfd52c96c40fc4822465093571bab1d2028cc20dfdbca04f6ce47277cfe629723f08fc8022f0daacda41e5b1c125e3499c3b5db6ab

memory/2316-10-0x00000000748E0000-0x0000000074E8B000-memory.dmp

memory/2316-12-0x00000000748E0000-0x0000000074E8B000-memory.dmp

memory/2848-11-0x00000000748E0000-0x0000000074E8B000-memory.dmp

memory/2316-14-0x00000000748E0000-0x0000000074E8B000-memory.dmp

memory/2316-15-0x00000000748E0000-0x0000000074E8B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-30 17:19

Reported

2024-05-30 17:21

Platform

win10v2004-20240508-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d30e81b53079ab01f7442a2f86c7357d.exe C:\Users\Admin\AppData\Roaming\chrome.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d30e81b53079ab01f7442a2f86c7357d.exe C:\Users\Admin\AppData\Roaming\chrome.exe N/A

Executes dropped EXE

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d30e81b53079ab01f7442a2f86c7357d = "\"C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe\" .." C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d30e81b53079ab01f7442a2f86c7357d = "\"C:\\Users\\Admin\\AppData\\Roaming\\chrome.exe\" .." C:\Users\Admin\AppData\Roaming\chrome.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Roaming\chrome.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\84e19fdbbf684408ba2eeb96d01f1219_JaffaCakes118.exe"

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

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

C:\Windows\SysWOW64\netsh.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 105.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp
US 8.8.8.8:53 4.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 dark11223344a5b56d7.ddns.net udp

Files

memory/1700-0-0x0000000075052000-0x0000000075053000-memory.dmp

memory/1700-1-0x0000000075050000-0x0000000075601000-memory.dmp

memory/1700-2-0x0000000075050000-0x0000000075601000-memory.dmp

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

MD5 84e19fdbbf684408ba2eeb96d01f1219
SHA1 e8ef86328b4fc6de391fdebe69931546bcb29adb
SHA256 312b0eb7bfb4618339d424ce828b4956c50bab132732f0813897e476f9a33014
SHA512 5b79f2c7a9c3e4ead5eb03cfd52c96c40fc4822465093571bab1d2028cc20dfdbca04f6ce47277cfe629723f08fc8022f0daacda41e5b1c125e3499c3b5db6ab

memory/1916-12-0x0000000075050000-0x0000000075601000-memory.dmp

memory/1700-13-0x0000000075050000-0x0000000075601000-memory.dmp

memory/1916-15-0x0000000075050000-0x0000000075601000-memory.dmp