Analysis Overview
SHA256
ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f
Threat Level: Known bad
The file ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe was found to be: Known bad.
Malicious Activity Summary
Detects executables (downlaoders) containing URLs to raw contents of a paste
Njrat family
detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Drops startup file
Legitimate hosting services abused for malware hosting/C2
Adds Run key to start application
Unsigned PE
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-01 05:29
Signatures
Detects executables (downlaoders) containing URLs to raw contents of a paste
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Njrat family
detects Windows exceutables potentially bypassing UAC using eventvwr.exe
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-01 05:29
Reported
2024-03-01 05:32
Platform
win10v2004-20240226-en
Max time kernel
25s
Max time network
156s
Command Line
Signatures
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
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\TASKKILL.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\TASKKILL.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe
"C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe"
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM wscript.exe
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM cmd.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/4336-0-0x00000000749B0000-0x0000000074F61000-memory.dmp
memory/4336-1-0x0000000000E20000-0x0000000000E30000-memory.dmp
memory/4336-2-0x00000000749B0000-0x0000000074F61000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-01 05:29
Reported
2024-03-01 05:32
Platform
win7-20240221-en
Max time kernel
150s
Max time network
154s
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\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.url | C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.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\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.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\\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe\" .." | C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe\" .." | C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.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 |
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
Processes
C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe
"C:\Users\Admin\AppData\Local\Temp\ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f.exe"
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM wscript.exe
C:\Windows\SysWOW64\TASKKILL.exe
TASKKILL /F /IM cmd.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 18.158.249.75:12607 | 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 |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.102.39:12607 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.125.209.94:12607 | 0.tcp.eu.ngrok.io | tcp |
| DE | 3.125.209.94:12607 | 0.tcp.eu.ngrok.io | tcp |
Files
memory/2980-0-0x0000000074C60000-0x000000007520B000-memory.dmp
memory/2980-1-0x0000000074C60000-0x000000007520B000-memory.dmp
memory/2980-2-0x0000000000E00000-0x0000000000E40000-memory.dmp
memory/2980-17-0x0000000074C60000-0x000000007520B000-memory.dmp
memory/2980-18-0x0000000074C60000-0x000000007520B000-memory.dmp
memory/2980-19-0x0000000000E00000-0x0000000000E40000-memory.dmp
memory/2980-20-0x0000000000E00000-0x0000000000E40000-memory.dmp
memory/2980-21-0x0000000000E00000-0x0000000000E40000-memory.dmp
memory/2980-22-0x0000000000E00000-0x0000000000E40000-memory.dmp