Analysis Overview
SHA256
24c71817c6727812a252651685ae359cd67cd59b32ba2500012d66680652211b
Threat Level: Known bad
The file 8ec82ca83b465f1833f5df5a16bcdc4f was found to be: Known bad.
Malicious Activity Summary
Xtremerat family
XtremeRAT
Detect XtremeRAT payload
Modifies Installed Components in the registry
UPX packed file
Adds Run key to start application
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-02-04 09:19
Signatures
Detect XtremeRAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xtremerat family
UPX packed file
| 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: behavioral1
Detonation Overview
Submitted
2024-02-04 09:19
Reported
2024-02-04 09:21
Platform
win7-20231215-en
Max time kernel
148s
Max time network
152s
Command Line
Signatures
Detect XtremeRAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
XtremeRAT
Modifies Installed Components in the registry
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87} | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart" | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe" | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\Server.exe" | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\InstallDir\Server.exe | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
| File created | C:\Windows\SysWOW64\InstallDir\Server.exe | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1896 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 1896 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 1896 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 1896 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 1896 wrote to memory of 1944 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe
"C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe"
C:\Windows\SysWOW64\explorer.exe
explorer.exe
Network
| Country | Destination | Domain | Proto |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp | |
| N/A | 127.0.0.1:81 | tcp |
Files
memory/1896-0-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/1944-4-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/1944-6-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/1896-7-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/1944-9-0x0000000000C80000-0x0000000000C96000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-04 09:19
Reported
2024-02-04 09:21
Platform
win10v2004-20231215-en
Max time kernel
152s
Max time network
156s
Command Line
Signatures
Detect XtremeRAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
XtremeRAT
Modifies Installed Components in the registry
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87} | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{PS032544-7UH8-7808-07HU-8EWLS63S8C87}\StubPath = "C:\\Windows\\system32\\InstallDir\\Server.exe restart" | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\system32\\InstallDir\\Server.exe" | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\system32\\InstallDir\\Server.exe" | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\InstallDir\Server.exe | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
| File created | C:\Windows\SysWOW64\InstallDir\Server.exe | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\explorer.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4580 wrote to memory of 4508 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 4580 wrote to memory of 4508 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 4580 wrote to memory of 4508 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
| PID 4580 wrote to memory of 4508 | N/A | C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe | C:\Windows\SysWOW64\explorer.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe
"C:\Users\Admin\AppData\Local\Temp\8ec82ca83b465f1833f5df5a16bcdc4f.exe"
C:\Windows\SysWOW64\explorer.exe
explorer.exe
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.134.221.88.in-addr.arpa | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp | |
| US | 8.8.8.8:53 | rivalvoy.no-ip.org | udp |
| N/A | 127.0.0.1:81 | tcp |
Files
memory/4580-0-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/4508-4-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/4580-5-0x0000000000C80000-0x0000000000C96000-memory.dmp
memory/4508-7-0x0000000000C80000-0x0000000000C96000-memory.dmp