Analysis Overview
SHA256
5575d516016285aaa303aef92c9e9ee7f65aa2982bff91664faeb4d767893594
Threat Level: Known bad
The file 5575d516016285aaa303aef92c9e9ee7f65aa2982bff91664faeb4d767893594 was found to be: Known bad.
Malicious Activity Summary
Kutaki
Kutaki Executable
Kutaki family
Executes dropped EXE
Loads dropped DLL
Drops startup file
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-05-03 20:18
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-05-03 20:18
Reported
2022-05-03 20:21
Platform
win7-20220414-en
Max time kernel
104s
Max time network
50s
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\rnjgzjch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rnjgzjch.exe | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rnjgzjch.exe | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe
"C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.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\rnjgzjch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rnjgzjch.exe"
Network
Files
memory/892-56-0x00000000763B1000-0x00000000763B3000-memory.dmp
memory/1996-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rnjgzjch.exe
| MD5 | 409c3e610fdff7165ea03ae828a10a85 |
| SHA1 | 6c74e3488bc6b2dd6ae7c4f6dcb0388a50282d61 |
| SHA256 | f8a24fe1aa9092c805572d4e2e6188dc4c99ca9255f0fbf98fb101f33e9e99b7 |
| SHA512 | 12c93a24ac73e4bb1eb2040107fdb845e48f96f91bd301e91614a247ef002e4b8657603d636de6c87f338dc3a3dc55f1dbf3a3cddec1e021fe68f29baf41b53f |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rnjgzjch.exe
| MD5 | 409c3e610fdff7165ea03ae828a10a85 |
| SHA1 | 6c74e3488bc6b2dd6ae7c4f6dcb0388a50282d61 |
| SHA256 | f8a24fe1aa9092c805572d4e2e6188dc4c99ca9255f0fbf98fb101f33e9e99b7 |
| SHA512 | 12c93a24ac73e4bb1eb2040107fdb845e48f96f91bd301e91614a247ef002e4b8657603d636de6c87f338dc3a3dc55f1dbf3a3cddec1e021fe68f29baf41b53f |
memory/2040-60-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rnjgzjch.exe
| MD5 | 409c3e610fdff7165ea03ae828a10a85 |
| SHA1 | 6c74e3488bc6b2dd6ae7c4f6dcb0388a50282d61 |
| SHA256 | f8a24fe1aa9092c805572d4e2e6188dc4c99ca9255f0fbf98fb101f33e9e99b7 |
| SHA512 | 12c93a24ac73e4bb1eb2040107fdb845e48f96f91bd301e91614a247ef002e4b8657603d636de6c87f338dc3a3dc55f1dbf3a3cddec1e021fe68f29baf41b53f |
Analysis: behavioral2
Detonation Overview
Submitted
2022-05-03 20:18
Reported
2022-05-03 20:21
Platform
win10v2004-20220414-en
Max time kernel
126s
Max time network
142s
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\mvgwbzch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4760 wrote to memory of 3112 | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4760 wrote to memory of 3112 | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4760 wrote to memory of 3112 | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4760 wrote to memory of 752 | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe |
| PID 4760 wrote to memory of 752 | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe |
| PID 4760 wrote to memory of 752 | N/A | C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.exe
"C:\Users\Admin\AppData\Local\Temp\TRANSFER COPY.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\mvgwbzch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe"
Network
| Country | Destination | Domain | Proto |
| FR | 2.18.109.224:443 | tcp | |
| FR | 2.18.109.224:443 | storesdk.dsx.mp.microsoft.com | tcp |
| US | 20.189.173.1:443 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| US | 104.18.25.243:80 | tcp |
Files
memory/3112-132-0x0000000000000000-mapping.dmp
memory/752-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe
| MD5 | 409c3e610fdff7165ea03ae828a10a85 |
| SHA1 | 6c74e3488bc6b2dd6ae7c4f6dcb0388a50282d61 |
| SHA256 | f8a24fe1aa9092c805572d4e2e6188dc4c99ca9255f0fbf98fb101f33e9e99b7 |
| SHA512 | 12c93a24ac73e4bb1eb2040107fdb845e48f96f91bd301e91614a247ef002e4b8657603d636de6c87f338dc3a3dc55f1dbf3a3cddec1e021fe68f29baf41b53f |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mvgwbzch.exe
| MD5 | 409c3e610fdff7165ea03ae828a10a85 |
| SHA1 | 6c74e3488bc6b2dd6ae7c4f6dcb0388a50282d61 |
| SHA256 | f8a24fe1aa9092c805572d4e2e6188dc4c99ca9255f0fbf98fb101f33e9e99b7 |
| SHA512 | 12c93a24ac73e4bb1eb2040107fdb845e48f96f91bd301e91614a247ef002e4b8657603d636de6c87f338dc3a3dc55f1dbf3a3cddec1e021fe68f29baf41b53f |