Analysis Overview
SHA256
b6c1798151f3fab27920c3d9e00a67b35df3d814a294701b3eec962aba6bd201
Threat Level: Known bad
The file b6c1798151f3fab27920c3d9e00a67b35df3d814a294701b3eec962aba6bd201 was found to be: Known bad.
Malicious Activity Summary
Kutaki Executable
Kutaki family
Kutaki
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
2022-05-21 11:34
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral2
Detonation Overview
Submitted
2022-05-21 11:34
Reported
2022-05-21 11:49
Platform
win10v2004-20220414-en
Max time kernel
184s
Max time network
181s
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\eppjldch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.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\eppjldch.exe | C:\Users\Admin\AppData\Local\Temp\image.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\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:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 5116 wrote to memory of 4764 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 5116 wrote to memory of 4764 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 5116 wrote to memory of 4764 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 5116 wrote to memory of 4712 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe |
| PID 5116 wrote to memory of 4712 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe |
| PID 5116 wrote to memory of 4712 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe |
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\
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe"
Network
| Country | Destination | Domain | Proto |
| NL | 13.69.116.104:443 | tcp | |
| IE | 20.54.110.249:443 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| FR | 2.18.109.224:443 | tcp | |
| US | 204.79.197.203:80 | tcp | |
| NL | 88.221.144.179:80 | tcp | |
| NL | 104.123.41.133:80 | tcp | |
| US | 8.8.8.8:53 | 151.122.125.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | storesdk.dsx.mp.microsoft.com | udp |
| FR | 2.18.109.224:443 | storesdk.dsx.mp.microsoft.com | tcp |
Files
memory/4764-132-0x0000000000000000-mapping.dmp
memory/4712-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe
| MD5 | 76430208466ca619a470ab10e9ce6848 |
| SHA1 | a7730a38f002dfe4e59a26ec2cc46fdc422e2708 |
| SHA256 | 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5 |
| SHA512 | cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eppjldch.exe
| MD5 | 76430208466ca619a470ab10e9ce6848 |
| SHA1 | a7730a38f002dfe4e59a26ec2cc46fdc422e2708 |
| SHA256 | 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5 |
| SHA512 | cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b |
Analysis: behavioral1
Detonation Overview
Submitted
2022-05-21 11:34
Reported
2022-05-21 11:49
Platform
win7-20220414-en
Max time kernel
141s
Max time network
45s
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\wdrwolch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.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\wdrwolch.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
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\
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe"
Network
Files
memory/2032-56-0x0000000075FC1000-0x0000000075FC3000-memory.dmp
memory/1968-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe
| MD5 | 76430208466ca619a470ab10e9ce6848 |
| SHA1 | a7730a38f002dfe4e59a26ec2cc46fdc422e2708 |
| SHA256 | 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5 |
| SHA512 | cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b |
memory/676-60-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe
| MD5 | 76430208466ca619a470ab10e9ce6848 |
| SHA1 | a7730a38f002dfe4e59a26ec2cc46fdc422e2708 |
| SHA256 | 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5 |
| SHA512 | cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wdrwolch.exe
| MD5 | 76430208466ca619a470ab10e9ce6848 |
| SHA1 | a7730a38f002dfe4e59a26ec2cc46fdc422e2708 |
| SHA256 | 5bd645a7783a25d2caa48ee448ad1e47c00ae25e5a7fd9b304ad9422e9e79fd5 |
| SHA512 | cad3a9d15632488ad418e17472215199630910f9adeb5d076e7a38c95b8b8e06fbe8263b9a3e2853e84b18e3754fc58ffb01717e845ffdf48fecdb397e92c22b |