Analysis Overview
SHA256
bb2e59f7decf5f2655fd2a37a90803195e3ecee363fd8103e0ea556f1f85a6fe
Threat Level: Known bad
The file c2fa3bf16efa680e4d94331cc3412460N was found to be: Known bad.
Malicious Activity Summary
Njrat family
Modifies Windows Firewall
Drops startup file
Drops autorun.inf file
Unsigned PE
System Location Discovery: System Language Discovery
Event Triggered Execution: Netsh Helper DLL
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-27 16:27
Signatures
Njrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-27 16:27
Reported
2024-08-27 16:29
Platform
win10v2004-20240802-en
Max time kernel
118s
Max time network
109s
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 opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c25a44db353f01294d560923ec8374cbWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c25a44db353f01294d560923ec8374cbWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
Drops autorun.inf file
| Description | Indicator | Process | Target |
| File created | C:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File opened for modification | C:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File created | F:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File opened for modification | F:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4312 wrote to memory of 2984 | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 4312 wrote to memory of 2984 | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 4312 wrote to memory of 2984 | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | C:\Windows\SysWOW64\netsh.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe
"C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe" "c2fa3bf16efa680e4d94331cc3412460N.exe" ENABLE
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 14.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.140.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 192.142.123.92.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| US | 8.8.8.8:53 | 10.27.171.150.in-addr.arpa | udp |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp |
Files
memory/4312-0-0x0000000075212000-0x0000000075213000-memory.dmp
memory/4312-1-0x0000000075210000-0x00000000757C1000-memory.dmp
memory/4312-2-0x0000000075210000-0x00000000757C1000-memory.dmp
F:\Umbrella.flv.exe
| MD5 | c2fa3bf16efa680e4d94331cc3412460 |
| SHA1 | 952e90052fad71f1aecc40d1190792ba949d9418 |
| SHA256 | bb2e59f7decf5f2655fd2a37a90803195e3ecee363fd8103e0ea556f1f85a6fe |
| SHA512 | b3d176370240c2f7a8af545f4d7008486ede93674df737e4747c61f58a62403706b1ab41763ed294a6e9691b5c107e41b3333402912b661141603c5c9eee2a9c |
memory/4312-16-0x0000000075210000-0x00000000757C1000-memory.dmp
memory/4312-15-0x0000000075212000-0x0000000075213000-memory.dmp
memory/4312-17-0x0000000075210000-0x00000000757C1000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-27 16:27
Reported
2024-08-27 16:29
Platform
win7-20240704-en
Max time kernel
118s
Max time network
120s
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\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c25a44db353f01294d560923ec8374cbWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c25a44db353f01294d560923ec8374cbWindows Update.exe | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
Drops autorun.inf file
| Description | Indicator | Process | Target |
| File opened for modification | F:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File created | C:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File opened for modification | C:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| File created | F:\autorun.inf | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
Event Triggered Execution: Netsh Helper DLL
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key queried | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
| Key value enumerated | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh | C:\Windows\SysWOW64\netsh.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\netsh.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2748 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 2748 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 2748 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | C:\Windows\SysWOW64\netsh.exe |
| PID 2748 wrote to memory of 2736 | N/A | C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe | C:\Windows\SysWOW64\netsh.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe
"C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe"
C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\c2fa3bf16efa680e4d94331cc3412460N.exe" "c2fa3bf16efa680e4d94331cc3412460N.exe" ENABLE
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp | |
| N/A | 127.0.0.1:5552 | tcp |
Files
memory/2748-0-0x0000000073C01000-0x0000000073C02000-memory.dmp
memory/2748-1-0x0000000073C00000-0x00000000741AB000-memory.dmp
memory/2748-2-0x0000000073C00000-0x00000000741AB000-memory.dmp
F:\Umbrella.flv.exe
| MD5 | c2fa3bf16efa680e4d94331cc3412460 |
| SHA1 | 952e90052fad71f1aecc40d1190792ba949d9418 |
| SHA256 | bb2e59f7decf5f2655fd2a37a90803195e3ecee363fd8103e0ea556f1f85a6fe |
| SHA512 | b3d176370240c2f7a8af545f4d7008486ede93674df737e4747c61f58a62403706b1ab41763ed294a6e9691b5c107e41b3333402912b661141603c5c9eee2a9c |
memory/2748-15-0x0000000073C00000-0x00000000741AB000-memory.dmp
memory/2748-16-0x0000000073C00000-0x00000000741AB000-memory.dmp