Analysis Overview
SHA256
73733257bc449d4fed5bd3ffb494a0ce11c6c8c68b58b464761d194bc24ff29b
Threat Level: Known bad
The file 73733257bc449d4fed5bd3ffb494a0ce11c6c8c68b58b464761d194bc24ff29b was found to be: Known bad.
Malicious Activity Summary
Kutaki Executable
Kutaki
Kutaki family
Executes dropped EXE
Drops startup file
Loads dropped DLL
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-02-21 22:03
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-02-21 22:03
Reported
2022-02-21 22:05
Platform
win7-en-20211208
Max time kernel
122s
Max time network
125s
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\pkznrdch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pkznrdch.exe | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pkznrdch.exe | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\tracking details.exe
"C:\Users\Admin\AppData\Local\Temp\tracking details.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\pkznrdch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pkznrdch.exe"
Network
Files
memory/1568-57-0x0000000076371000-0x0000000076373000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pkznrdch.exe
| MD5 | 3c35fca6cb231d20cc04e6d8b2601010 |
| SHA1 | aecde409a20bdaa63be0570d5625938e7df50197 |
| SHA256 | e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198 |
| SHA512 | 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pkznrdch.exe
| MD5 | 3c35fca6cb231d20cc04e6d8b2601010 |
| SHA1 | aecde409a20bdaa63be0570d5625938e7df50197 |
| SHA256 | e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198 |
| SHA512 | 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77 |
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\pkznrdch.exe
| MD5 | 3c35fca6cb231d20cc04e6d8b2601010 |
| SHA1 | aecde409a20bdaa63be0570d5625938e7df50197 |
| SHA256 | e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198 |
| SHA512 | 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77 |
Analysis: behavioral2
Detonation Overview
Submitted
2022-02-21 22:03
Reported
2022-02-21 22:05
Platform
win10v2004-en-20220113
Max time kernel
151s
Max time network
140s
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\jbwsmoch.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\jbwsmoch.exe | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\WindowsUpdate.log | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\DataStore.edb | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\SoftwareDistribution\ReportingEvents.log | C:\Windows\system32\svchost.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\system32\svchost.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1900 wrote to memory of 4032 | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1900 wrote to memory of 4032 | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1900 wrote to memory of 4032 | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1900 wrote to memory of 3868 | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe |
| PID 1900 wrote to memory of 3868 | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe |
| PID 1900 wrote to memory of 3868 | N/A | C:\Users\Admin\AppData\Local\Temp\tracking details.exe | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\tracking details.exe
"C:\Users\Admin\AppData\Local\Temp\tracking details.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\jbwsmoch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe"
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
Network
Files
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe
| MD5 | 3c35fca6cb231d20cc04e6d8b2601010 |
| SHA1 | aecde409a20bdaa63be0570d5625938e7df50197 |
| SHA256 | e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198 |
| SHA512 | 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77 |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jbwsmoch.exe
| MD5 | 3c35fca6cb231d20cc04e6d8b2601010 |
| SHA1 | aecde409a20bdaa63be0570d5625938e7df50197 |
| SHA256 | e6cd47abf6c7c73449bd05329a0e30a48012c947d8762dd2429333af8d7bc198 |
| SHA512 | 0b7e2604adf2d89ef471336f8dd322c9f8b222e404aa68fbf67a13ced6ec0eb0a8c9968cb92401b44d2d4d1a1e53e51e7d8840f74ee4baec3f1d4b05d76d1d77 |
memory/3532-136-0x000001D658D60000-0x000001D658D70000-memory.dmp
memory/3532-137-0x000001D659320000-0x000001D659330000-memory.dmp
memory/3532-138-0x000001D65B990000-0x000001D65B994000-memory.dmp