Analysis Overview
SHA256
2e5d72526f20a77c48730482202938ea1bedc95444c9334b2b8f14eb877bf8c1
Threat Level: Known bad
The file 2e5d72526f20a77c48730482202938ea1bedc95444c9334b2b8f14eb877bf8c1 was found to be: Known bad.
Malicious Activity Summary
Kutaki family
Kutaki Executable
Kutaki
Executes dropped EXE
Drops startup file
Loads dropped DLL
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-05-21 01:12
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-05-21 01:12
Reported
2022-05-21 01:40
Platform
win7-20220414-en
Max time kernel
83s
Max time network
46s
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\mmnsstch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mmnsstch.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\mmnsstch.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\mmnsstch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mmnsstch.exe"
Network
Files
memory/1960-56-0x0000000075721000-0x0000000075723000-memory.dmp
memory/1732-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mmnsstch.exe
| MD5 | 9bcc23452d5a20790ff08c81812d7fd2 |
| SHA1 | 9ad029bf6cebf0308db6771d423018289684faf5 |
| SHA256 | e33166cf9f69cdc54b3ca9721a6837d961ee42285c766561a9ff8a1719f39405 |
| SHA512 | 89b39cc4b9bfef88cc99df3de3501a61f8e40a0becad0c5b2d83054db2414a723e25f85c638b22f98a3adcc3870952aa76d4dc1c66a61d13a2510dd147757606 |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mmnsstch.exe
| MD5 | 9bcc23452d5a20790ff08c81812d7fd2 |
| SHA1 | 9ad029bf6cebf0308db6771d423018289684faf5 |
| SHA256 | e33166cf9f69cdc54b3ca9721a6837d961ee42285c766561a9ff8a1719f39405 |
| SHA512 | 89b39cc4b9bfef88cc99df3de3501a61f8e40a0becad0c5b2d83054db2414a723e25f85c638b22f98a3adcc3870952aa76d4dc1c66a61d13a2510dd147757606 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\mmnsstch.exe
| MD5 | 9bcc23452d5a20790ff08c81812d7fd2 |
| SHA1 | 9ad029bf6cebf0308db6771d423018289684faf5 |
| SHA256 | e33166cf9f69cdc54b3ca9721a6837d961ee42285c766561a9ff8a1719f39405 |
| SHA512 | 89b39cc4b9bfef88cc99df3de3501a61f8e40a0becad0c5b2d83054db2414a723e25f85c638b22f98a3adcc3870952aa76d4dc1c66a61d13a2510dd147757606 |
memory/1812-60-0x0000000000000000-mapping.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2022-05-21 01:12
Reported
2022-05-21 01:40
Platform
win10v2004-20220414-en
Max time kernel
128s
Max time network
168s
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\dnkfwoch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.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\dnkfwoch.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\dnkfwoch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4100 wrote to memory of 4668 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4100 wrote to memory of 4668 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4100 wrote to memory of 4668 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4100 wrote to memory of 4964 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.exe |
| PID 4100 wrote to memory of 4964 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.exe |
| PID 4100 wrote to memory of 4964 | N/A | C:\Users\Admin\AppData\Local\Temp\image.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.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\dnkfwoch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.exe"
Network
| Country | Destination | Domain | Proto |
| US | 93.184.220.29:80 | tcp | |
| US | 104.208.16.90:443 | tcp | |
| US | 52.152.108.96:443 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 8.8.8.8:53 | 97.97.242.52.in-addr.arpa | udp |
Files
memory/4668-132-0x0000000000000000-mapping.dmp
memory/4964-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.exe
| MD5 | 9bcc23452d5a20790ff08c81812d7fd2 |
| SHA1 | 9ad029bf6cebf0308db6771d423018289684faf5 |
| SHA256 | e33166cf9f69cdc54b3ca9721a6837d961ee42285c766561a9ff8a1719f39405 |
| SHA512 | 89b39cc4b9bfef88cc99df3de3501a61f8e40a0becad0c5b2d83054db2414a723e25f85c638b22f98a3adcc3870952aa76d4dc1c66a61d13a2510dd147757606 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dnkfwoch.exe
| MD5 | 9bcc23452d5a20790ff08c81812d7fd2 |
| SHA1 | 9ad029bf6cebf0308db6771d423018289684faf5 |
| SHA256 | e33166cf9f69cdc54b3ca9721a6837d961ee42285c766561a9ff8a1719f39405 |
| SHA512 | 89b39cc4b9bfef88cc99df3de3501a61f8e40a0becad0c5b2d83054db2414a723e25f85c638b22f98a3adcc3870952aa76d4dc1c66a61d13a2510dd147757606 |