Analysis Overview
SHA256
37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe
Threat Level: Known bad
The file 37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe was found to be: Known bad.
Malicious Activity Summary
Kutaki
Kutaki Executable
Kutaki family
Executes dropped EXE
Loads dropped DLL
Drops startup file
Maps connected drives based on registry
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Modifies Internet Explorer settings
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-06-25 22:04
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-06-25 22:04
Reported
2022-06-25 23:36
Platform
win7-20220414-en
Max time kernel
157s
Max time network
47s
Command Line
Signatures
Kutaki
Kutaki Executable
| 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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe | N/A |
Maps connected drives based on registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | N/A |
Enumerates physical storage devices
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe
"C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe"
Network
Files
memory/1900-56-0x0000000076011000-0x0000000076013000-memory.dmp
memory/1336-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
| MD5 | eb31bd6d5ff7c28b47395961db00d4bd |
| SHA1 | 2a41952d03da49c16095cc5aca603cd3bb8a2972 |
| SHA256 | 37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe |
| SHA512 | c38436a2588d43af05dae56cd1933f4fab83431d910267926640ba58a3892448ad908a5be7947d9b3c7ce5d60c5e2a170a744d41e608ad3e2dfc064514ceb137 |
memory/1448-60-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
| MD5 | eb31bd6d5ff7c28b47395961db00d4bd |
| SHA1 | 2a41952d03da49c16095cc5aca603cd3bb8a2972 |
| SHA256 | 37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe |
| SHA512 | c38436a2588d43af05dae56cd1933f4fab83431d910267926640ba58a3892448ad908a5be7947d9b3c7ce5d60c5e2a170a744d41e608ad3e2dfc064514ceb137 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
| MD5 | eb31bd6d5ff7c28b47395961db00d4bd |
| SHA1 | 2a41952d03da49c16095cc5aca603cd3bb8a2972 |
| SHA256 | 37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe |
| SHA512 | c38436a2588d43af05dae56cd1933f4fab83431d910267926640ba58a3892448ad908a5be7947d9b3c7ce5d60c5e2a170a744d41e608ad3e2dfc064514ceb137 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
| MD5 | eb31bd6d5ff7c28b47395961db00d4bd |
| SHA1 | 2a41952d03da49c16095cc5aca603cd3bb8a2972 |
| SHA256 | 37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe |
| SHA512 | c38436a2588d43af05dae56cd1933f4fab83431d910267926640ba58a3892448ad908a5be7947d9b3c7ce5d60c5e2a170a744d41e608ad3e2dfc064514ceb137 |
Analysis: behavioral2
Detonation Overview
Submitted
2022-06-25 22:04
Reported
2022-06-25 23:37
Platform
win10v2004-20220414-en
Max time kernel
154s
Max time network
137s
Command Line
Signatures
Kutaki
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe | N/A |
Maps connected drives based on registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe
"C:\Users\Admin\AppData\Local\Temp\37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe"
Network
| Country | Destination | Domain | Proto |
| US | 52.168.117.169:443 | tcp | |
| US | 8.8.8.8:53 | 15.89.54.20.in-addr.arpa | udp |
| NL | 104.110.191.140:80 | tcp | |
| US | 204.79.197.203:80 | tcp | |
| NL | 88.221.144.179:80 | tcp | |
| US | 8.8.8.8:53 | 106.89.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.9.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.2.0.0.0.0.2.0.1.3.0.6.2.ip6.arpa | udp |
Files
memory/940-132-0x0000000000000000-mapping.dmp
memory/5104-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
| MD5 | eb31bd6d5ff7c28b47395961db00d4bd |
| SHA1 | 2a41952d03da49c16095cc5aca603cd3bb8a2972 |
| SHA256 | 37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe |
| SHA512 | c38436a2588d43af05dae56cd1933f4fab83431d910267926640ba58a3892448ad908a5be7947d9b3c7ce5d60c5e2a170a744d41e608ad3e2dfc064514ceb137 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hyuder.exe
| MD5 | eb31bd6d5ff7c28b47395961db00d4bd |
| SHA1 | 2a41952d03da49c16095cc5aca603cd3bb8a2972 |
| SHA256 | 37d09b414bcdb52bd41321de0c8003f713537bf79e25636433cd553bbc0c5bbe |
| SHA512 | c38436a2588d43af05dae56cd1933f4fab83431d910267926640ba58a3892448ad908a5be7947d9b3c7ce5d60c5e2a170a744d41e608ad3e2dfc064514ceb137 |