Analysis Overview
SHA256
4c8403e48c8fc0203b2472ec3e0d32445528e2081e07a5ae5ccedc8cf6fa1172
Threat Level: Known bad
The file 4c8403e48c8fc0203b2472ec3e0d32445528e2081e07a5ae5ccedc8cf6fa1172 was found to be: Known bad.
Malicious Activity Summary
Kutaki family
Kutaki Executable
Kutaki
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
Modifies Internet Explorer settings
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-07-12 05:56
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral2
Detonation Overview
Submitted
2022-07-12 05:56
Reported
2022-07-12 08:08
Platform
win10v2004-20220414-en
Max time kernel
152s
Max time network
158s
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\lunlerio.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | C:\Users\Admin\AppData\Local\Temp\TDS 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\lunlerio.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\lunlerio.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\TDS Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3472 wrote to memory of 2200 | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3472 wrote to memory of 2200 | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3472 wrote to memory of 2200 | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3472 wrote to memory of 4884 | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe |
| PID 3472 wrote to memory of 4884 | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe |
| PID 3472 wrote to memory of 4884 | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe
"C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.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\lunlerio.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.248.21.254:80 | tcp | |
| US | 8.248.21.254:80 | tcp | |
| IE | 13.69.239.72:443 | tcp | |
| US | 8.248.21.254:80 | tcp | |
| US | 8.248.21.254:80 | tcp | |
| US | 8.248.21.254:80 | tcp | |
| US | 8.8.8.8:53 | 14.110.152.52.in-addr.arpa | udp |
| FR | 2.16.119.157:443 | tcp |
Files
memory/2200-132-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
| MD5 | 62aea7e47f647f9d6d2cdacb15e4b163 |
| SHA1 | 884550e92ac4ad9c24f3473d889b9247775f5ee5 |
| SHA256 | 73a3c2d670bc63cd77c0ccbfd6fc92972531897317c630f26f02ad58dbbf0af3 |
| SHA512 | 59cdbc399225f2bf6fb3f56cfaa4c3705a0a5f23ae7d59ccf14467c19adc6ef5694fa91afae80ebeedd44ac3974923b6d8c616d87cc55a0d2fd8e2310108c283 |
memory/4884-133-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
| MD5 | 62aea7e47f647f9d6d2cdacb15e4b163 |
| SHA1 | 884550e92ac4ad9c24f3473d889b9247775f5ee5 |
| SHA256 | 73a3c2d670bc63cd77c0ccbfd6fc92972531897317c630f26f02ad58dbbf0af3 |
| SHA512 | 59cdbc399225f2bf6fb3f56cfaa4c3705a0a5f23ae7d59ccf14467c19adc6ef5694fa91afae80ebeedd44ac3974923b6d8c616d87cc55a0d2fd8e2310108c283 |
Analysis: behavioral1
Detonation Overview
Submitted
2022-07-12 05:56
Reported
2022-07-12 08:08
Platform
win7-20220414-en
Max time kernel
150s
Max time network
40s
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\lunlerio.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TDS 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\lunlerio.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\lunlerio.exe | N/A |
Enumerates physical storage devices
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\Main | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.exe
"C:\Users\Admin\AppData\Local\Temp\TDS Payment Challan.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\lunlerio.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe"
Network
Files
memory/848-56-0x0000000075951000-0x0000000075953000-memory.dmp
memory/1904-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
| MD5 | 62aea7e47f647f9d6d2cdacb15e4b163 |
| SHA1 | 884550e92ac4ad9c24f3473d889b9247775f5ee5 |
| SHA256 | 73a3c2d670bc63cd77c0ccbfd6fc92972531897317c630f26f02ad58dbbf0af3 |
| SHA512 | 59cdbc399225f2bf6fb3f56cfaa4c3705a0a5f23ae7d59ccf14467c19adc6ef5694fa91afae80ebeedd44ac3974923b6d8c616d87cc55a0d2fd8e2310108c283 |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
| MD5 | 62aea7e47f647f9d6d2cdacb15e4b163 |
| SHA1 | 884550e92ac4ad9c24f3473d889b9247775f5ee5 |
| SHA256 | 73a3c2d670bc63cd77c0ccbfd6fc92972531897317c630f26f02ad58dbbf0af3 |
| SHA512 | 59cdbc399225f2bf6fb3f56cfaa4c3705a0a5f23ae7d59ccf14467c19adc6ef5694fa91afae80ebeedd44ac3974923b6d8c616d87cc55a0d2fd8e2310108c283 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
| MD5 | 62aea7e47f647f9d6d2cdacb15e4b163 |
| SHA1 | 884550e92ac4ad9c24f3473d889b9247775f5ee5 |
| SHA256 | 73a3c2d670bc63cd77c0ccbfd6fc92972531897317c630f26f02ad58dbbf0af3 |
| SHA512 | 59cdbc399225f2bf6fb3f56cfaa4c3705a0a5f23ae7d59ccf14467c19adc6ef5694fa91afae80ebeedd44ac3974923b6d8c616d87cc55a0d2fd8e2310108c283 |
memory/1352-60-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
| MD5 | 62aea7e47f647f9d6d2cdacb15e4b163 |
| SHA1 | 884550e92ac4ad9c24f3473d889b9247775f5ee5 |
| SHA256 | 73a3c2d670bc63cd77c0ccbfd6fc92972531897317c630f26f02ad58dbbf0af3 |
| SHA512 | 59cdbc399225f2bf6fb3f56cfaa4c3705a0a5f23ae7d59ccf14467c19adc6ef5694fa91afae80ebeedd44ac3974923b6d8c616d87cc55a0d2fd8e2310108c283 |