Analysis Overview
SHA256
c0478341ec19cae4fd4093d53e9cc777210ad57122836f4aa911addeacc911f9
Threat Level: Known bad
The file image.exe was found to be: Known bad.
Malicious Activity Summary
Kutaki family
Kutaki
Kutaki Executable
Executes dropped EXE
Loads dropped DLL
Drops startup file
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies Internet Explorer settings
Suspicious use of FindShellTrayWindow
Modifies registry class
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-11-20 07:53
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2021-11-20 07:53
Reported
2021-11-20 07:55
Platform
win7-en-20211104
Max time kernel
147s
Max time network
121s
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\bkmqvfch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.exe | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.exe | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
Enumerates physical storage devices
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.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\image.exe
"C:\Users\Admin\AppData\Local\Temp\image.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\bkmqvfch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.exe"
C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
Network
Files
memory/844-55-0x00000000001B0000-0x00000000001B6000-memory.dmp
memory/844-56-0x00000000001B0000-0x00000000001BA000-memory.dmp
memory/844-57-0x00000000758F1000-0x00000000758F3000-memory.dmp
memory/1248-58-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.exe
| MD5 | e4cc7fb761fc4110b631dbabf46363e1 |
| SHA1 | f433972fe7fb1b165eaedadb2d31193e94ba2d33 |
| SHA256 | c0478341ec19cae4fd4093d53e9cc777210ad57122836f4aa911addeacc911f9 |
| SHA512 | 918178d680dadb3929a1a399717914fd3539925a933da42d259f0516c929f6241ab6fb3f8d1d7ee2d7b3f47758ec1455f4f6189f2a43ecc55fe4a45f2990ae65 |
memory/1816-62-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.exe
| MD5 | e4cc7fb761fc4110b631dbabf46363e1 |
| SHA1 | f433972fe7fb1b165eaedadb2d31193e94ba2d33 |
| SHA256 | c0478341ec19cae4fd4093d53e9cc777210ad57122836f4aa911addeacc911f9 |
| SHA512 | 918178d680dadb3929a1a399717914fd3539925a933da42d259f0516c929f6241ab6fb3f8d1d7ee2d7b3f47758ec1455f4f6189f2a43ecc55fe4a45f2990ae65 |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.exe
| MD5 | e4cc7fb761fc4110b631dbabf46363e1 |
| SHA1 | f433972fe7fb1b165eaedadb2d31193e94ba2d33 |
| SHA256 | c0478341ec19cae4fd4093d53e9cc777210ad57122836f4aa911addeacc911f9 |
| SHA512 | 918178d680dadb3929a1a399717914fd3539925a933da42d259f0516c929f6241ab6fb3f8d1d7ee2d7b3f47758ec1455f4f6189f2a43ecc55fe4a45f2990ae65 |
memory/1816-64-0x0000000000220000-0x0000000000226000-memory.dmp
memory/1816-65-0x0000000000220000-0x000000000022A000-memory.dmp
memory/1248-68-0x0000000002040000-0x0000000002042000-memory.dmp
memory/1044-69-0x0000000000370000-0x0000000000372000-memory.dmp
memory/1044-70-0x0000000000730000-0x0000000000731000-memory.dmp
memory/1816-71-0x0000000003F71000-0x0000000004E1D000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bkmqvfch.exe
| MD5 | e4cc7fb761fc4110b631dbabf46363e1 |
| SHA1 | f433972fe7fb1b165eaedadb2d31193e94ba2d33 |
| SHA256 | c0478341ec19cae4fd4093d53e9cc777210ad57122836f4aa911addeacc911f9 |
| SHA512 | 918178d680dadb3929a1a399717914fd3539925a933da42d259f0516c929f6241ab6fb3f8d1d7ee2d7b3f47758ec1455f4f6189f2a43ecc55fe4a45f2990ae65 |
Analysis: behavioral2
Detonation Overview
Submitted
2021-11-20 07:53
Reported
2021-11-20 07:55
Platform
win10-en-20211014
Max time kernel
129s
Max time network
152s
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\ppnoybch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe | C:\Users\Admin\AppData\Local\Temp\image.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
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000_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
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mspaint.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mspaint.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mspaint.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\mspaint.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\image.exe
"C:\Users\Admin\AppData\Local\Temp\image.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\NewBitmapImage.bmp
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 -s DeviceAssociationService
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | time.windows.com | udp |
| NL | 20.101.57.9:123 | time.windows.com | udp |
Files
memory/3288-115-0x0000000000630000-0x0000000000636000-memory.dmp
memory/3288-116-0x0000000000630000-0x000000000063A000-memory.dmp
memory/1268-117-0x0000000000000000-mapping.dmp
memory/2312-118-0x0000000000000000-mapping.dmp
memory/1872-119-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe
| MD5 | e4cc7fb761fc4110b631dbabf46363e1 |
| SHA1 | f433972fe7fb1b165eaedadb2d31193e94ba2d33 |
| SHA256 | c0478341ec19cae4fd4093d53e9cc777210ad57122836f4aa911addeacc911f9 |
| SHA512 | 918178d680dadb3929a1a399717914fd3539925a933da42d259f0516c929f6241ab6fb3f8d1d7ee2d7b3f47758ec1455f4f6189f2a43ecc55fe4a45f2990ae65 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ppnoybch.exe
| MD5 | e4cc7fb761fc4110b631dbabf46363e1 |
| SHA1 | f433972fe7fb1b165eaedadb2d31193e94ba2d33 |
| SHA256 | c0478341ec19cae4fd4093d53e9cc777210ad57122836f4aa911addeacc911f9 |
| SHA512 | 918178d680dadb3929a1a399717914fd3539925a933da42d259f0516c929f6241ab6fb3f8d1d7ee2d7b3f47758ec1455f4f6189f2a43ecc55fe4a45f2990ae65 |