Analysis Overview
SHA256
03afc77a1e8c8966432bd341c66d3186b31141bc64d971893e834473a67b5b55
Threat Level: Known bad
The file 03afc77a1e8c8966432bd341c66d3186b31141bc64d971893e834473a67b5b55 was found to be: Known bad.
Malicious Activity Summary
Kutaki Executable
Kutaki family
Kutaki
Executes dropped EXE
Drops startup file
Loads dropped DLL
Maps connected drives based on registry
Enumerates physical storage devices
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-05-27 23:40
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral2
Detonation Overview
Submitted
2022-05-27 23:40
Reported
2022-05-28 01:50
Platform
win10v2004-20220414-en
Max time kernel
164s
Max time network
180s
Command Line
Signatures
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe
"C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.253.69.232:80 | tcp | |
| US | 67.26.205.254:80 | tcp | |
| US | 67.26.205.254:80 | tcp | |
| US | 20.42.65.88:443 | tcp | |
| US | 67.26.205.254:80 | tcp | |
| US | 67.26.205.254:80 | tcp | |
| US | 67.26.205.254:80 | tcp | |
| US | 8.8.8.8:53 | 97.97.242.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 226.101.242.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | a.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.5.0.8.0.0.3.0.1.3.0.6.2.ip6.arpa | udp |
| US | 67.27.131.254:80 | tcp |
Files
Analysis: behavioral1
Detonation Overview
Submitted
2022-05-27 23:40
Reported
2022-05-28 01:50
Platform
win7-20220414-en
Max time kernel
102s
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\pymluwch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.exe | N/A |
Maps connected drives based on registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe | N/A |
Enumerates physical storage devices
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\Tax Payment Challan.exe
"C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.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\pymluwch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe"
C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
Network
Files
memory/1072-56-0x0000000075841000-0x0000000075843000-memory.dmp
memory/952-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe
| MD5 | f85699f0c3bca198228a5af7de67ecba |
| SHA1 | 56f4a24a398dae4e6e47d62832144673b3486f9f |
| SHA256 | 4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e |
| SHA512 | b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582 |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe
| MD5 | f85699f0c3bca198228a5af7de67ecba |
| SHA1 | 56f4a24a398dae4e6e47d62832144673b3486f9f |
| SHA256 | 4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e |
| SHA512 | b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pymluwch.exe
| MD5 | f85699f0c3bca198228a5af7de67ecba |
| SHA1 | 56f4a24a398dae4e6e47d62832144673b3486f9f |
| SHA256 | 4c1bc4e929ba5c02a4fbba9b7bb3eb728a3f4e010e04a9c10189487c1843085e |
| SHA512 | b170c937b015ae6a2ae98ae609f2c6626130681b95d45089d99d9bed9b8fffc54b170b1f69d0d2b64acbf8d3282e08e45b5accbdbbc753dbaa13d6ff510e3582 |
memory/1120-61-0x0000000000000000-mapping.dmp