Analysis Overview
SHA256
65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f
Threat Level: Known bad
The file 65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe was found to be: Known bad.
Malicious Activity Summary
Kutaki family
Kutaki
Kutaki Executable
Checks computer location settings
Executes dropped EXE
Drops startup file
Loads dropped DLL
Drops file in Windows directory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
Modifies Internet Explorer settings
Suspicious use of FindShellTrayWindow
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-20 02:47
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-20 02:47
Reported
2024-11-20 02:49
Platform
win7-20240903-en
Max time kernel
149s
Max time network
135s
Command Line
Signatures
Kutaki
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe | C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe | C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.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:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\DllHost.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\DllHost.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
"C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe"
C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | helloyesohruhylove.club | udp |
Files
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oxeujkfk.exe
| MD5 | c884ae57f21fbee98f3327583a408412 |
| SHA1 | de718911e64d84670c48095febab54d4f130f3cf |
| SHA256 | 65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f |
| SHA512 | aa545b01561628aacf03b2e0e131fda681707a52ce4a2e051b0d3946bf776630bc097ffc5c957fa68077b5b445540fa8c28c4aa8f5f686f1aee8f5a6e841a668 |
memory/2756-63-0x0000000000130000-0x0000000000132000-memory.dmp
memory/2572-62-0x00000000002C0000-0x00000000002C2000-memory.dmp
memory/2340-64-0x0000000004870000-0x00000000058D2000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\errorPageStrings[1]
| MD5 | e3e4a98353f119b80b323302f26b78fa |
| SHA1 | 20ee35a370cdd3a8a7d04b506410300fd0a6a864 |
| SHA256 | 9466d620dc57835a2475f8f71e304f54aee7160e134ba160baae0f19e5e71e66 |
| SHA512 | d8e4d73c76804a5abebd5dbc3a86dcdb6e73107b873175a8de67332c113fb7c4899890bf7972e467866fa4cd100a7e2a10a770e5a9c41cbf23b54351b771dcee |
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\dnserrordiagoff[2]
| MD5 | 47f581b112d58eda23ea8b2e08cf0ff0 |
| SHA1 | 6ec1df5eaec1439573aef0fb96dabfc953305e5b |
| SHA256 | b1c947d00db5fce43314c56c663dbeae0ffa13407c9c16225c17ccefc3afa928 |
| SHA512 | 187383eef3d646091e9f68eff680a11c7947b3d9b54a78cc6de4a04629d7037e9c97673ac054a6f1cf591235c110ca181a6b69ecba0e5032168f56f4486fff92 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\NewErrorPageTemplate[1]
| MD5 | cdf81e591d9cbfb47a7f97a2bcdb70b9 |
| SHA1 | 8f12010dfaacdecad77b70a3e781c707cf328496 |
| SHA256 | 204d95c6fb161368c795bb63e538fe0b11f9e406494bb5758b3b0d60c5f651bd |
| SHA512 | 977dcc2c6488acaf0e5970cef1a7a72c9f9dc6bb82da54f057e0853c8e939e4ab01b163eb7a5058e093a8bc44ecad9d06880fdc883e67e28ac67fee4d070a4cc |
C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\633SXO0D\httpErrorPagesScripts[1]
| MD5 | 3f57b781cb3ef114dd0b665151571b7b |
| SHA1 | ce6a63f996df3a1cccb81720e21204b825e0238c |
| SHA256 | 46e019fa34465f4ed096a9665d1827b54553931ad82e98be01edb1ddbc94d3ad |
| SHA512 | 8cbf4ef582332ae7ea605f910ad6f8a4bc28513482409fa84f08943a72cac2cf0fa32b6af4c20c697e1fac2c5ba16b5a64a23af0c11eefbf69625b8f9f90c8fa |
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-20 02:47
Reported
2024-11-20 02:49
Platform
win10v2004-20241007-en
Max time kernel
93s
Max time network
141s
Command Line
Signatures
Kutaki
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\cmd.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oqagujfk.exe | C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oqagujfk.exe | C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oqagujfk.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Debug\WIA\wiatrace.log | C:\Windows\SysWOW64\mspaint.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:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oqagujfk.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:\Windows\SysWOW64\mspaint.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings | C:\Windows\SysWOW64\cmd.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\mspaint.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mspaint.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe
"C:\Users\Admin\AppData\Local\Temp\65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oqagujfk.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oqagujfk.exe"
C:\Windows\SysWOW64\mspaint.exe
"C:\Windows\system32\mspaint.exe" "C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp"
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s DeviceAssociationService
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.26.192.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | helloyesohruhylove.club | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.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 |
Files
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\oqagujfk.exe
| MD5 | c884ae57f21fbee98f3327583a408412 |
| SHA1 | de718911e64d84670c48095febab54d4f130f3cf |
| SHA256 | 65357d5cab8976dd6cd93dc4a6defc6ec2f03312f60036ecc963684189b93d5f |
| SHA512 | aa545b01561628aacf03b2e0e131fda681707a52ce4a2e051b0d3946bf776630bc097ffc5c957fa68077b5b445540fa8c28c4aa8f5f686f1aee8f5a6e841a668 |