Analysis Overview
SHA256
a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659
Threat Level: Known bad
The file a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659 was found to be: Known bad.
Malicious Activity Summary
Kutaki
Kutaki Executable
Kutaki family
Executes dropped EXE
Drops startup file
Loads dropped DLL
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-29 20:00
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-03-29 20:00
Reported
2022-03-30 23:38
Platform
win7-20220311-en
Max time kernel
4294183s
Max time network
127s
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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbzxyrch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbzxyrch.exe | C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbzxyrch.exe | C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe
"C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.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\fbzxyrch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbzxyrch.exe"
Network
Files
memory/1968-56-0x00000000767A1000-0x00000000767A3000-memory.dmp
memory/300-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbzxyrch.exe
| MD5 | 5d481b1a50c3d6477180f413f1b5597c |
| SHA1 | 3cb1c4f6622fbd6b591fd3f50fa18664c6d9d0ca |
| SHA256 | a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659 |
| SHA512 | d0ec083a97be0ce6fa33cf6dd3e424e1f939fded0dbaebed0f66c7871071cfc355c8da117726fd9328537595b6ca641f4dc7419baf7f105cf018a3deed5f1f0c |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbzxyrch.exe
| MD5 | 5d481b1a50c3d6477180f413f1b5597c |
| SHA1 | 3cb1c4f6622fbd6b591fd3f50fa18664c6d9d0ca |
| SHA256 | a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659 |
| SHA512 | d0ec083a97be0ce6fa33cf6dd3e424e1f939fded0dbaebed0f66c7871071cfc355c8da117726fd9328537595b6ca641f4dc7419baf7f105cf018a3deed5f1f0c |
memory/1732-60-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fbzxyrch.exe
| MD5 | 5d481b1a50c3d6477180f413f1b5597c |
| SHA1 | 3cb1c4f6622fbd6b591fd3f50fa18664c6d9d0ca |
| SHA256 | a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659 |
| SHA512 | d0ec083a97be0ce6fa33cf6dd3e424e1f939fded0dbaebed0f66c7871071cfc355c8da117726fd9328537595b6ca641f4dc7419baf7f105cf018a3deed5f1f0c |
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-29 20:00
Reported
2022-03-30 23:39
Platform
win10v2004-en-20220113
Max time kernel
129s
Max time network
133s
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\efpmmpch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\efpmmpch.exe | C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\efpmmpch.exe | C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.exe
"C:\Users\Admin\AppData\Local\Temp\a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659.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\efpmmpch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\efpmmpch.exe"
Network
Files
memory/4112-132-0x0000000000000000-mapping.dmp
memory/4972-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\efpmmpch.exe
| MD5 | 5d481b1a50c3d6477180f413f1b5597c |
| SHA1 | 3cb1c4f6622fbd6b591fd3f50fa18664c6d9d0ca |
| SHA256 | a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659 |
| SHA512 | d0ec083a97be0ce6fa33cf6dd3e424e1f939fded0dbaebed0f66c7871071cfc355c8da117726fd9328537595b6ca641f4dc7419baf7f105cf018a3deed5f1f0c |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\efpmmpch.exe
| MD5 | 5d481b1a50c3d6477180f413f1b5597c |
| SHA1 | 3cb1c4f6622fbd6b591fd3f50fa18664c6d9d0ca |
| SHA256 | a8a690b159d9ee37b5ef2a16800385d61581a8e4d21f0069cd492e919a868659 |
| SHA512 | d0ec083a97be0ce6fa33cf6dd3e424e1f939fded0dbaebed0f66c7871071cfc355c8da117726fd9328537595b6ca641f4dc7419baf7f105cf018a3deed5f1f0c |