Analysis Overview
SHA256
7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18
Threat Level: Likely malicious
The file 7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N was found to be: Likely malicious.
Malicious Activity Summary
Sets file to hidden
Executes dropped EXE
Checks computer location settings
Deletes itself
Indicator Removal: File Deletion
UPX packed file
Drops file in Windows directory
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Views/modifies file attributes
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-09 15:43
Signatures
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
2024-11-09 15:43
Reported
2024-11-09 15:45
Platform
win7-20240903-en
Max time kernel
118s
Max time network
120s
Command Line
Signatures
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Debug\ayahost.exe | N/A |
Indicator Removal: File Deletion
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 |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Debug\ayahost.exe | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
| File opened for modification | C:\Windows\Debug\ayahost.exe | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
| File opened for modification | C:\Windows\Debug\ayahost.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\Debug\ayahost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\attrib.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\Debug\ayahost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\Debug\ayahost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe
"C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe"
C:\Windows\SysWOW64\attrib.exe
attrib +a +s +h +r C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
C:\Windows\Debug\ayahost.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7F5A2A~1.EXE > nul
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.baidu.com | udp |
| HK | 103.235.46.96:80 | www.baidu.com | tcp |
| US | 8.8.8.8:53 | PjYiyebns.nnnn.eu.org | udp |
| US | 8.8.8.8:53 | zPFuFf8jW6.nnnn.eu.org | udp |
Files
memory/1640-0-0x0000000000400000-0x0000000000416000-memory.dmp
C:\Windows\debug\ayahost.exe
| MD5 | 8e1fc2132feedc791cbc5e8df83de327 |
| SHA1 | 68f48b3fe2d0712a49db89647639fe545875b6ca |
| SHA256 | a26f913d070d77eac487f12967e35f0573e6341248577b851dbfbb3afb22e13c |
| SHA512 | 7983d9d79e7dcab07d178bcd1aab01d37a35797425fe3a30e8d0d4cb9c263358883cac308a0c035cfc858ef5fed429ec5630d2601057163861fc2673bf27248d |
memory/2580-5-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2580-6-0x0000000000400000-0x0000000000416000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-09 15:43
Reported
2024-11-09 15:45
Platform
win10v2004-20241007-en
Max time kernel
111s
Max time network
95s
Command Line
Signatures
Sets file to hidden
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Debug\hauhost.exe | N/A |
Indicator Removal: File Deletion
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 |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\Debug\hauhost.exe | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
| File opened for modification | C:\Windows\Debug\hauhost.exe | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
| File opened for modification | C:\Windows\Debug\hauhost.exe | C:\Windows\SysWOW64\attrib.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\Debug\hauhost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\attrib.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\Debug\hauhost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\Debug\hauhost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe | N/A |
Suspicious use of WriteProcessMemory
Views/modifies file attributes
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\attrib.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe
"C:\Users\Admin\AppData\Local\Temp\7f5a2a16b8ea48b6b87919c6282bdc68583cf2ae8cd3c0b7b0a57f5cd2547e18N.exe"
C:\Windows\SysWOW64\attrib.exe
attrib +a +s +h +r C:\Windows\Debug\hauhost.exe
C:\Windows\Debug\hauhost.exe
C:\Windows\Debug\hauhost.exe
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7F5A2A~1.EXE > nul
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | www.baidu.com | udp |
| HK | 103.235.47.188:80 | www.baidu.com | tcp |
| US | 8.8.8.8:53 | 20.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 188.47.235.103.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.42.69.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | PjYiyebns.nnnn.eu.org | udp |
| US | 8.8.8.8:53 | zPFuFf8jW6.nnnn.eu.org | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
Files
memory/2732-0-0x0000000000400000-0x0000000000416000-memory.dmp
C:\Windows\debug\hauhost.exe
| MD5 | 8e1fc2132feedc791cbc5e8df83de327 |
| SHA1 | 68f48b3fe2d0712a49db89647639fe545875b6ca |
| SHA256 | a26f913d070d77eac487f12967e35f0573e6341248577b851dbfbb3afb22e13c |
| SHA512 | 7983d9d79e7dcab07d178bcd1aab01d37a35797425fe3a30e8d0d4cb9c263358883cac308a0c035cfc858ef5fed429ec5630d2601057163861fc2673bf27248d |
memory/2732-5-0x0000000000400000-0x0000000000416000-memory.dmp
memory/4736-6-0x0000000000400000-0x0000000000416000-memory.dmp