Analysis Overview
SHA256
1810e76a7f52cbb783412b2aeb93298fd31e3fd59e66cca317e16bd1079e9c71
Threat Level: Known bad
The file 30ae864bbb52f134f172124ee1e229bb 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 behavior: EnumeratesProcesses
Modifies Internet Explorer settings
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-12-29 08:55
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2021-12-29 08:55
Reported
2021-12-29 08:57
Platform
win7-en-20211208
Max time kernel
122s
Max time network
124s
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\gtvluech.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gtvluech.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\gtvluech.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\gtvluech.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\gtvluech.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gtvluech.exe"
C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
Network
Files
memory/1448-55-0x0000000000220000-0x0000000000226000-memory.dmp
memory/1448-56-0x0000000000220000-0x000000000022A000-memory.dmp
memory/1448-57-0x00000000763B1000-0x00000000763B3000-memory.dmp
memory/360-58-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gtvluech.exe
| MD5 | c43b7d74eef3fa1c025f08939e9d4be2 |
| SHA1 | 0b41411bd1f52c115d77fc44815beed1b3cb749c |
| SHA256 | d0fd86e3254a14f3b99d141b8512eae447cd716436ba8a192422596a2b0bb625 |
| SHA512 | 9104a982f97370c03a95955b86bd9c37681d2c5aed2ba46ed0f113d915dbd83b1d237c6c5b128e24c7a3a3dc01c11fded5ef9eecf217255da98dd0eea5ee4d3d |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gtvluech.exe
| MD5 | c43b7d74eef3fa1c025f08939e9d4be2 |
| SHA1 | 0b41411bd1f52c115d77fc44815beed1b3cb749c |
| SHA256 | d0fd86e3254a14f3b99d141b8512eae447cd716436ba8a192422596a2b0bb625 |
| SHA512 | 9104a982f97370c03a95955b86bd9c37681d2c5aed2ba46ed0f113d915dbd83b1d237c6c5b128e24c7a3a3dc01c11fded5ef9eecf217255da98dd0eea5ee4d3d |
memory/568-61-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gtvluech.exe
| MD5 | c43b7d74eef3fa1c025f08939e9d4be2 |
| SHA1 | 0b41411bd1f52c115d77fc44815beed1b3cb749c |
| SHA256 | d0fd86e3254a14f3b99d141b8512eae447cd716436ba8a192422596a2b0bb625 |
| SHA512 | 9104a982f97370c03a95955b86bd9c37681d2c5aed2ba46ed0f113d915dbd83b1d237c6c5b128e24c7a3a3dc01c11fded5ef9eecf217255da98dd0eea5ee4d3d |
memory/360-68-0x00000000004F0000-0x00000000004F2000-memory.dmp
memory/1632-69-0x0000000000160000-0x0000000000162000-memory.dmp
memory/1632-70-0x0000000000240000-0x0000000000241000-memory.dmp
memory/568-71-0x0000000003E71000-0x0000000004D1D000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\gtvluech.exe
| MD5 | c43b7d74eef3fa1c025f08939e9d4be2 |
| SHA1 | 0b41411bd1f52c115d77fc44815beed1b3cb749c |
| SHA256 | d0fd86e3254a14f3b99d141b8512eae447cd716436ba8a192422596a2b0bb625 |
| SHA512 | 9104a982f97370c03a95955b86bd9c37681d2c5aed2ba46ed0f113d915dbd83b1d237c6c5b128e24c7a3a3dc01c11fded5ef9eecf217255da98dd0eea5ee4d3d |
Analysis: behavioral2
Detonation Overview
Submitted
2021-12-29 08:55
Reported
2021-12-29 08:57
Platform
win10-en-20211208
Max time kernel
132s
Max time network
126s
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\zbzljvch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zbzljvch.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\zbzljvch.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-1-5-21-2361464256-2201551969-2316606395-1000_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\zbzljvch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zbzljvch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zbzljvch.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\zbzljvch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zbzljvch.exe"
Network
| Country | Destination | Domain | Proto |
| US | 52.109.8.21:443 | tcp | |
| US | 8.8.8.8:53 | time.windows.com | udp |
| NL | 20.101.57.9:123 | time.windows.com | udp |
Files
memory/1444-117-0x0000000000000000-mapping.dmp
memory/3676-118-0x0000000000000000-mapping.dmp
memory/704-119-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zbzljvch.exe
| MD5 | c43b7d74eef3fa1c025f08939e9d4be2 |
| SHA1 | 0b41411bd1f52c115d77fc44815beed1b3cb749c |
| SHA256 | d0fd86e3254a14f3b99d141b8512eae447cd716436ba8a192422596a2b0bb625 |
| SHA512 | 9104a982f97370c03a95955b86bd9c37681d2c5aed2ba46ed0f113d915dbd83b1d237c6c5b128e24c7a3a3dc01c11fded5ef9eecf217255da98dd0eea5ee4d3d |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\zbzljvch.exe
| MD5 | c43b7d74eef3fa1c025f08939e9d4be2 |
| SHA1 | 0b41411bd1f52c115d77fc44815beed1b3cb749c |
| SHA256 | d0fd86e3254a14f3b99d141b8512eae447cd716436ba8a192422596a2b0bb625 |
| SHA512 | 9104a982f97370c03a95955b86bd9c37681d2c5aed2ba46ed0f113d915dbd83b1d237c6c5b128e24c7a3a3dc01c11fded5ef9eecf217255da98dd0eea5ee4d3d |