Analysis Overview
SHA256
ff86000c39c061650d004894837d8f618d0724ce3b2a2ef24072c784b2ceb67f
Threat Level: Known bad
The file E431CAE2C2E7C1D50E2264102D898310.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 WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-29 16:41
Signatures
Njrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-29 16:41
Reported
2024-02-29 16:43
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\E431CAE2C2E7C1D50E2264102D898310.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.url | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.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\E431CAE2C2E7C1D50E2264102D898310.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\E431CAE2C2E7C1D50E2264102D898310.exe\" .." | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | N/A |
| 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\\E431CAE2C2E7C1D50E2264102D898310.exe\" .." | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.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 |
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\E431CAE2C2E7C1D50E2264102D898310.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 WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe
"C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.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 | 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 |
| 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 |
| 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 | 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 |
Files
memory/2240-0-0x0000000074370000-0x000000007491B000-memory.dmp
memory/2240-1-0x0000000074370000-0x000000007491B000-memory.dmp
memory/2240-2-0x00000000001A0000-0x00000000001E0000-memory.dmp
memory/2240-8-0x00000000001A0000-0x00000000001E0000-memory.dmp
memory/2240-9-0x0000000074370000-0x000000007491B000-memory.dmp
memory/2240-10-0x0000000074370000-0x000000007491B000-memory.dmp
memory/2240-11-0x00000000001A0000-0x00000000001E0000-memory.dmp
memory/2240-12-0x00000000001A0000-0x00000000001E0000-memory.dmp
memory/2240-13-0x00000000001A0000-0x00000000001E0000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-29 16:41
Reported
2024-02-29 16:43
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
151s
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\E431CAE2C2E7C1D50E2264102D898310.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Client.url | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.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\E431CAE2C2E7C1D50E2264102D898310.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\E431CAE2C2E7C1D50E2264102D898310.exe\" .." | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Client.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\E431CAE2C2E7C1D50E2264102D898310.exe\" .." | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.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 |
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 2744 wrote to memory of 1124 | N/A | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2744 wrote to memory of 1124 | N/A | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2744 wrote to memory of 1124 | N/A | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2744 wrote to memory of 4460 | N/A | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2744 wrote to memory of 4460 | N/A | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | C:\Windows\SysWOW64\TASKKILL.exe |
| PID 2744 wrote to memory of 4460 | N/A | C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe | C:\Windows\SysWOW64\TASKKILL.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.exe
"C:\Users\Admin\AppData\Local\Temp\E431CAE2C2E7C1D50E2264102D898310.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 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 177.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.121.231.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.tcp.eu.ngrok.io | udp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 205.142.124.3.in-addr.arpa | udp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| DE | 3.124.142.205:12607 | 0.tcp.eu.ngrok.io | tcp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | 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 |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | 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 |
| 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 |
| US | 8.8.8.8:53 | 187.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | 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 |
| 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 | 3.125.209.94:12607 | 0.tcp.eu.ngrok.io | tcp |
Files
memory/2744-0-0x0000000074AF0000-0x00000000750A1000-memory.dmp
memory/2744-1-0x0000000074AF0000-0x00000000750A1000-memory.dmp
memory/2744-2-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-8-0x0000000074AF0000-0x00000000750A1000-memory.dmp
memory/2744-9-0x0000000074AF0000-0x00000000750A1000-memory.dmp
memory/2744-10-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-11-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-12-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-13-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-14-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-15-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-16-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-17-0x00000000011D0000-0x00000000011E0000-memory.dmp
memory/2744-18-0x00000000011D0000-0x00000000011E0000-memory.dmp