Analysis Overview
SHA256
b761256b5f20918c970f0d64b939e86d8304141b04e9024a809996da04d46c5e
Threat Level: Known bad
The file 0684d62dd44b077b6e537af5146b3481 was found to be: Known bad.
Malicious Activity Summary
Kutaki Executable
Kutaki family
Kutaki
Executes dropped EXE
Loads dropped DLL
Drops startup file
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Modifies registry class
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Modifies Internet Explorer settings
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-12-29 09:19
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral2
Detonation Overview
Submitted
2021-12-29 09:19
Reported
2021-12-29 09:21
Platform
win10-en-20211208
Max time kernel
125s
Max time network
119s
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\bondejch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe | C:\Users\Admin\AppData\Local\Temp\image.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.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-1-5-21-369956170-74428499-1628131376-1000_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:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.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 |
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:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe"
\??\c:\windows\system32\svchost.exe
c:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s DeviceAssociationService
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/512-117-0x0000000000000000-mapping.dmp
memory/728-118-0x0000000000000000-mapping.dmp
memory/2244-119-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe
| MD5 | e60ded83982043932447eba0a568273c |
| SHA1 | 835cfdbebbbcd44985572d5690d3dbcd8f041bbc |
| SHA256 | 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd |
| SHA512 | b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bondejch.exe
| MD5 | e60ded83982043932447eba0a568273c |
| SHA1 | 835cfdbebbbcd44985572d5690d3dbcd8f041bbc |
| SHA256 | 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd |
| SHA512 | b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c |
Analysis: behavioral1
Detonation Overview
Submitted
2021-12-29 09:19
Reported
2021-12-29 09:21
Platform
win7-en-20211208
Max time kernel
121s
Max time network
122s
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\xymnqlch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.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\xymnqlch.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-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.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\xymnqlch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe"
C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
Network
Files
memory/968-54-0x0000000000220000-0x0000000000226000-memory.dmp
memory/968-55-0x0000000000220000-0x000000000022A000-memory.dmp
memory/968-56-0x0000000074F11000-0x0000000074F13000-memory.dmp
memory/688-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe
| MD5 | e60ded83982043932447eba0a568273c |
| SHA1 | 835cfdbebbbcd44985572d5690d3dbcd8f041bbc |
| SHA256 | 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd |
| SHA512 | b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe
| MD5 | e60ded83982043932447eba0a568273c |
| SHA1 | 835cfdbebbbcd44985572d5690d3dbcd8f041bbc |
| SHA256 | 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd |
| SHA512 | b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c |
memory/1456-60-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe
| MD5 | e60ded83982043932447eba0a568273c |
| SHA1 | 835cfdbebbbcd44985572d5690d3dbcd8f041bbc |
| SHA256 | 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd |
| SHA512 | b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c |
memory/1456-63-0x00000000001B0000-0x00000000001BA000-memory.dmp
memory/1456-62-0x00000000001B0000-0x00000000001B6000-memory.dmp
memory/688-67-0x0000000001FD0000-0x0000000001FD2000-memory.dmp
memory/1980-68-0x00000000001E0000-0x00000000001E2000-memory.dmp
memory/1980-69-0x00000000003C0000-0x00000000003C1000-memory.dmp
memory/1456-70-0x0000000003DE1000-0x0000000004C8D000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xymnqlch.exe
| MD5 | e60ded83982043932447eba0a568273c |
| SHA1 | 835cfdbebbbcd44985572d5690d3dbcd8f041bbc |
| SHA256 | 6dd4d7a668ac56bb6e71090d32a522e77c885e540758ed08ac03d702b02f26dd |
| SHA512 | b4055f3994ea402eb81a8b7d5824e6d778c4335f99fcef8625fa8166eb9ea55bc2398e137695a4b21efed5711e7acd5a7f2e36fe1179b221abb71807b8bb729c |