Analysis Overview
SHA256
df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23
Threat Level: Known bad
The file df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23 was found to be: Known bad.
Malicious Activity Summary
Arkei
Suspicious use of NtCreateProcessExOtherParentProcess
Arkei Stealer Payload
Program crash
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-01-15 06:50
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2022-01-15 06:50
Reported
2022-01-15 06:53
Platform
win10v2004-en-20220112
Max time kernel
4265058s
Max time network
125s
Command Line
Signatures
Arkei
Suspicious use of NtCreateProcessExOtherParentProcess
| Description | Indicator | Process | Target |
| PID 3632 created 1728 | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe |
Arkei Stealer Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Key opened | \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\system32\MusNotification.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\system32\MusNotification.exe | N/A |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\SysWOW64\WerFault.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\MusNotification.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\MusNotification.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3632 wrote to memory of 1728 | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe |
| PID 3632 wrote to memory of 1728 | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe
"C:\Users\Admin\AppData\Local\Temp\df17f6f93bf7a187f675f7246a862dac1eef92b6ecfb4d3c99aea573f3492f23.exe"
C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1728 -ip 1728
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1728 -s 552
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | time.windows.com | udp |
| US | 8.8.8.8:53 | arc.msn.com | udp |
| US | 52.184.215.140:443 | arc.msn.com | tcp |
| US | 8.8.8.8:53 | slscr.update.microsoft.com | udp |
| US | 52.152.110.14:443 | slscr.update.microsoft.com | tcp |
| US | 8.8.8.8:53 | fe3cr.delivery.mp.microsoft.com | udp |
| US | 8.8.8.8:53 | fe3cr.delivery.mp.microsoft.com | udp |
| IE | 20.54.89.15:443 | fe3cr.delivery.mp.microsoft.com | tcp |
| US | 8.8.8.8:53 | slscr.update.microsoft.com | udp |
| US | 52.152.110.14:443 | slscr.update.microsoft.com | tcp |
| NL | 20.101.57.9:123 | time.windows.com | udp |
| US | 52.152.110.14:443 | slscr.update.microsoft.com | tcp |
| US | 8.8.8.8:53 | ris.api.iris.microsoft.com | udp |
| US | 52.252.42.28:443 | ris.api.iris.microsoft.com | tcp |
| US | 8.8.8.8:53 | img-prod-cms-rt-microsoft-com.akamaized.net | udp |
| FR | 2.22.22.216:443 | img-prod-cms-rt-microsoft-com.akamaized.net | tcp |
Files
memory/1728-130-0x000000000084E000-0x000000000085F000-memory.dmp
memory/1728-132-0x0000000000400000-0x0000000000560000-memory.dmp
memory/1728-131-0x0000000000700000-0x000000000071C000-memory.dmp