Analysis Overview
SHA256
42a599077c305dc279440b0107ad763be0217960c598e16fa74182ed2457c2d3
Threat Level: Known bad
The file 42a599077c305dc279440b0107ad763be0217960c598e16fa74182ed2457c2d3 was found to be: Known bad.
Malicious Activity Summary
Kutaki
Kutaki Executable
Kutaki family
Executes dropped EXE
Drops startup file
Loads dropped DLL
Maps connected drives based on registry
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-07-08 01:52
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-07-08 01:52
Reported
2022-07-08 04:00
Platform
win7-20220414-en
Max time kernel
128s
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\wkeqpqch.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\wkeqpqch.exe | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wkeqpqch.exe | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr
"C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr" /S
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\wkeqpqch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wkeqpqch.exe"
Network
Files
memory/1256-56-0x0000000075361000-0x0000000075363000-memory.dmp
memory/2024-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wkeqpqch.exe
| MD5 | 62fd0aecb02f01f3a59131ba5ae8d38a |
| SHA1 | 2c89f903ad958316ed22706c740cde7ee759247f |
| SHA256 | bdecdba010952f854106cced016ee000bfa09dd499d66fbc43acd585c9348c29 |
| SHA512 | 84ef0834069a71dc1e4b73c2a927a7357dc066ff72ef479166695d45ee631155b785c1009248b2fbb8452945f8db83f4e89e5cbbc4f974d2d7ac05f8f68e2dba |
memory/460-60-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wkeqpqch.exe
| MD5 | 62fd0aecb02f01f3a59131ba5ae8d38a |
| SHA1 | 2c89f903ad958316ed22706c740cde7ee759247f |
| SHA256 | bdecdba010952f854106cced016ee000bfa09dd499d66fbc43acd585c9348c29 |
| SHA512 | 84ef0834069a71dc1e4b73c2a927a7357dc066ff72ef479166695d45ee631155b785c1009248b2fbb8452945f8db83f4e89e5cbbc4f974d2d7ac05f8f68e2dba |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wkeqpqch.exe
| MD5 | 62fd0aecb02f01f3a59131ba5ae8d38a |
| SHA1 | 2c89f903ad958316ed22706c740cde7ee759247f |
| SHA256 | bdecdba010952f854106cced016ee000bfa09dd499d66fbc43acd585c9348c29 |
| SHA512 | 84ef0834069a71dc1e4b73c2a927a7357dc066ff72ef479166695d45ee631155b785c1009248b2fbb8452945f8db83f4e89e5cbbc4f974d2d7ac05f8f68e2dba |
Analysis: behavioral2
Detonation Overview
Submitted
2022-07-08 01:52
Reported
2022-07-08 03:59
Platform
win10v2004-20220414-en
Max time kernel
159s
Max time network
160s
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\tjqfpdch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | 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\tjqfpdch.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\tjqfpdch.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\Tax Payment Challan.scr | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4892 wrote to memory of 4836 | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | C:\Windows\SysWOW64\cmd.exe |
| PID 4892 wrote to memory of 4836 | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | C:\Windows\SysWOW64\cmd.exe |
| PID 4892 wrote to memory of 4836 | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | C:\Windows\SysWOW64\cmd.exe |
| PID 4892 wrote to memory of 4248 | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe |
| PID 4892 wrote to memory of 4248 | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe |
| PID 4892 wrote to memory of 4248 | N/A | C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr
"C:\Users\Admin\AppData\Local\Temp\Tax Payment Challan.scr" /S
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\tjqfpdch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe"
Network
| Country | Destination | Domain | Proto |
| AU | 104.46.162.224:443 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| NL | 178.79.208.1:80 | tcp | |
| US | 8.8.8.8:53 | 14.110.152.52.in-addr.arpa | udp |
Files
memory/4836-132-0x0000000000000000-mapping.dmp
memory/4248-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe
| MD5 | 62fd0aecb02f01f3a59131ba5ae8d38a |
| SHA1 | 2c89f903ad958316ed22706c740cde7ee759247f |
| SHA256 | bdecdba010952f854106cced016ee000bfa09dd499d66fbc43acd585c9348c29 |
| SHA512 | 84ef0834069a71dc1e4b73c2a927a7357dc066ff72ef479166695d45ee631155b785c1009248b2fbb8452945f8db83f4e89e5cbbc4f974d2d7ac05f8f68e2dba |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\tjqfpdch.exe
| MD5 | 62fd0aecb02f01f3a59131ba5ae8d38a |
| SHA1 | 2c89f903ad958316ed22706c740cde7ee759247f |
| SHA256 | bdecdba010952f854106cced016ee000bfa09dd499d66fbc43acd585c9348c29 |
| SHA512 | 84ef0834069a71dc1e4b73c2a927a7357dc066ff72ef479166695d45ee631155b785c1009248b2fbb8452945f8db83f4e89e5cbbc4f974d2d7ac05f8f68e2dba |