Analysis Overview
SHA256
e00d04dcc4489101599f86df3956673c2ebcb8adbf05fb603266b91e9336b955
Threat Level: Known bad
The file JOKE.exe was found to be: Known bad.
Malicious Activity Summary
Njrat family
Drops startup file
Legitimate hosting services abused for malware hosting/C2
Adds Run key to start application
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Kills process with taskkill
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-24 04:03
Signatures
Njrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-24 04:03
Reported
2024-02-24 10:36
Platform
win10-20240221-en
Max time kernel
524s
Max time network
530s
Command Line
Signatures
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.exe | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.url | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.exe | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1903027113-674645041-2759338396-1000\Software\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JOKE.exe\" .." | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\JOKE.exe\" .." | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 2.tcp.eu.ngrok.io | N/A | N/A |
Kills process with taskkill
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\TASKKILL.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\TASKKILL.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4904 wrote to memory of 4624 | N/A | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 4904 wrote to memory of 4624 | N/A | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 4904 wrote to memory of 4624 | N/A | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 4904 wrote to memory of 764 | N/A | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 4904 wrote to memory of 764 | N/A | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 4904 wrote to memory of 764 | N/A | C:\Users\Admin\AppData\Local\Temp\JOKE.exe | C:\Windows\SysWOW64\TASKKILL.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\JOKE.exe
"C:\Users\Admin\AppData\Local\Temp\JOKE.exe"
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM cmd.exe
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM wscript.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 30.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 173.178.17.96.in-addr.arpa | udp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.197.239.5:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.127.138.57:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.157.68.73:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 3.126.37.18:15217 | 2.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 2.tcp.eu.ngrok.io | udp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
| DE | 18.156.13.209:15217 | 2.tcp.eu.ngrok.io | tcp |
Files
memory/4904-0-0x00000000732A0000-0x0000000073850000-memory.dmp
memory/4904-1-0x00000000732A0000-0x0000000073850000-memory.dmp
memory/4904-2-0x00000000031D0000-0x00000000031E0000-memory.dmp
memory/4904-8-0x00000000732A0000-0x0000000073850000-memory.dmp
memory/4904-9-0x00000000732A0000-0x0000000073850000-memory.dmp