Analysis Overview
SHA256
db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5
Threat Level: Known bad
The file db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe was found to be: Known bad.
Malicious Activity Summary
Njrat family
Modifies Windows Firewall
Drops startup file
Legitimate hosting services abused for malware hosting/C2
Adds Run key to start application
Drops autorun.inf file
Unsigned PE
Checks processor information in registry
Suspicious use of AdjustPrivilegeToken
Enumerates system info in registry
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-20 19:26
Signatures
Njrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-20 19:26
Reported
2024-01-20 19:29
Platform
win10v2004-20231215-en
Max time kernel
142s
Max time network
150s
Command Line
Signatures
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeRestorePrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4064 wrote to memory of 1852 | N/A | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe |
| PID 4064 wrote to memory of 1852 | N/A | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe |
| PID 4064 wrote to memory of 1852 | N/A | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe
"C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 452
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 27.139.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.71.91.104.in-addr.arpa | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 172.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 178.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.143.182.52.in-addr.arpa | udp |
Files
memory/4064-0-0x0000000074FA0000-0x0000000075551000-memory.dmp
memory/4064-1-0x0000000074FA0000-0x0000000075551000-memory.dmp
memory/4064-2-0x0000000000650000-0x0000000000660000-memory.dmp
memory/4064-9-0x0000000074FA0000-0x0000000075551000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-20 19:26
Reported
2024-01-20 19:29
Platform
win7-20231215-en
Max time kernel
149s
Max time network
148s
Command Line
Signatures
Modifies Windows Firewall
| 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\3af7f2b1f33dad1da92e7f8ffbbc0386.exe | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3af7f2b1f33dad1da92e7f8ffbbc0386.exe | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\3af7f2b1f33dad1da92e7f8ffbbc0386 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe\" .." | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\3af7f2b1f33dad1da92e7f8ffbbc0386 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe\" .." | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
Drops autorun.inf file
| Description | Indicator | Process | Target |
| File opened for modification | C:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
| File created | D:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
| File created | F:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
| File opened for modification | F:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
| File created | C:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2616 wrote to memory of 1612 | N/A | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 2616 wrote to memory of 1612 | N/A | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 2616 wrote to memory of 1612 | N/A | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 2616 wrote to memory of 1612 | N/A | C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe | C:\Windows\SysWOW64\netsh.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe
"C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe" "db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5.exe" ENABLE
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.192.31.165:15574 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:15574 | 0.tcp.eu.ngrok.io | tcp |
Files
memory/2616-2-0x0000000074B20000-0x00000000750CB000-memory.dmp
memory/2616-1-0x0000000000620000-0x0000000000660000-memory.dmp
memory/2616-0-0x0000000074B20000-0x00000000750CB000-memory.dmp
F:\svchost.exe
| MD5 | 5c0fbebc21d4edf3759244438fc479ae |
| SHA1 | a5a9bb372be9d679be2795e2a2f42250b43a3d51 |
| SHA256 | db36cafda963b6464923356faf6e9ae1b953b2a85dcfd7c372c925407f1c21a5 |
| SHA512 | 96d33662575ccaa7b7adb24c15f3599c6203f66fb585f7d187829492f85d5995dbda5b80ab72960abae004188fd6ff1b6467093fdabba5331e6ce365156396a9 |
memory/2616-12-0x0000000074B20000-0x00000000750CB000-memory.dmp
memory/2616-13-0x0000000000620000-0x0000000000660000-memory.dmp