Analysis Overview
SHA256
ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f
Threat Level: Known bad
The file NOT A VIRUS.exe was found to be: Known bad.
Malicious Activity Summary
Njrat family
Drops startup file
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Drops file in Program Files directory
Unsigned PE
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-25 04:58
Signatures
Njrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-25 04:58
Reported
2024-02-25 05:05
Platform
win7-20240221-en
Max time kernel
209s
Max time network
212s
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\NOT A VIRUS.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.url | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.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\NOT A VIRUS.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NOT A VIRUS.exe\" .." | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\NOT A VIRUS.exe\" .." | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | 0.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 0.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 0.tcp.eu.ngrok.io | N/A | N/A |
| N/A | 0.tcp.eu.ngrok.io | N/A | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | 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 FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2864 wrote to memory of 3012 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2864 wrote to memory of 3012 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2864 wrote to memory of 3012 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2864 wrote to memory of 3012 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2864 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2864 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2864 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2864 wrote to memory of 2852 | N/A | C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe | C:\Windows\SysWOW64\TASKKILL.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe
"C:\Users\Admin\AppData\Local\Temp\NOT A VIRUS.exe"
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM wscript.exe
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM cmd.exe
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\system32\verclsid.exe
"C:\Windows\system32\verclsid.exe" /S /C {0B2C9183-C9FA-4C53-AE21-C900B0C39965} /I {0C733A8A-2A1C-11CE-ADE5-00AA0044773D} /X 0x401
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:12607 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.223.134:12607 | 0.tcp.eu.ngrok.io | tcp |
Files
memory/2864-0-0x0000000074750000-0x0000000074CFB000-memory.dmp
memory/2864-1-0x0000000074750000-0x0000000074CFB000-memory.dmp
memory/2864-2-0x0000000000BC0000-0x0000000000C00000-memory.dmp
memory/2864-8-0x0000000074750000-0x0000000074CFB000-memory.dmp
memory/2864-9-0x0000000074750000-0x0000000074CFB000-memory.dmp
memory/2864-10-0x0000000000BC0000-0x0000000000C00000-memory.dmp
memory/2864-11-0x0000000000BC0000-0x0000000000C00000-memory.dmp
memory/2864-12-0x0000000000BC0000-0x0000000000C00000-memory.dmp
memory/2864-13-0x0000000000BC0000-0x0000000000C00000-memory.dmp
memory/2864-14-0x0000000000BC0000-0x0000000000C00000-memory.dmp