Analysis Overview
SHA256
b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa
Threat Level: Known bad
The file b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa was found to be: Known bad.
Malicious Activity Summary
Kutaki family
Kutaki Executable
Kutaki
Executes dropped EXE
Loads dropped DLL
Drops startup file
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-03-26 16:14
Signatures
Kutaki Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kutaki family
Analysis: behavioral1
Detonation Overview
Submitted
2022-03-26 16:14
Reported
2022-03-26 16:19
Platform
win7-20220311-en
Max time kernel
4294182s
Max time network
126s
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\areunnch.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\areunnch.exe | C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\areunnch.exe | C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe
"C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.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\areunnch.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\areunnch.exe"
Network
Files
memory/1336-56-0x0000000075561000-0x0000000075563000-memory.dmp
memory/1572-57-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\areunnch.exe
| MD5 | 195938a648efcaf6fcf0a1a3ccde0b7d |
| SHA1 | 475af17dfa9fb2dc370554710fc2b7a4f6bdd2e9 |
| SHA256 | b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa |
| SHA512 | 5f2415687dd44e8e9e2bcc89c1ddc077fad1d789c64f249306e0b10578029b7821588cb3df80dfa545732583eccea091a0f49fdff85d4455546b2691b440acac |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\areunnch.exe
| MD5 | 195938a648efcaf6fcf0a1a3ccde0b7d |
| SHA1 | 475af17dfa9fb2dc370554710fc2b7a4f6bdd2e9 |
| SHA256 | b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa |
| SHA512 | 5f2415687dd44e8e9e2bcc89c1ddc077fad1d789c64f249306e0b10578029b7821588cb3df80dfa545732583eccea091a0f49fdff85d4455546b2691b440acac |
memory/1080-60-0x0000000000000000-mapping.dmp
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\areunnch.exe
| MD5 | 195938a648efcaf6fcf0a1a3ccde0b7d |
| SHA1 | 475af17dfa9fb2dc370554710fc2b7a4f6bdd2e9 |
| SHA256 | b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa |
| SHA512 | 5f2415687dd44e8e9e2bcc89c1ddc077fad1d789c64f249306e0b10578029b7821588cb3df80dfa545732583eccea091a0f49fdff85d4455546b2691b440acac |
Analysis: behavioral2
Detonation Overview
Submitted
2022-03-26 16:14
Reported
2022-03-26 16:19
Platform
win10v2004-en-20220113
Max time kernel
134s
Max time network
154s
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\szbglych.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\szbglych.exe | C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\szbglych.exe | C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe | N/A |
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.exe
"C:\Users\Admin\AppData\Local\Temp\b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa.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\szbglych.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\szbglych.exe"
Network
| Country | Destination | Domain | Proto |
| US | 52.109.12.18:443 | tcp | |
| US | 20.42.65.85:443 | tcp |
Files
memory/3900-135-0x0000000000000000-mapping.dmp
memory/1384-136-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\szbglych.exe
| MD5 | 195938a648efcaf6fcf0a1a3ccde0b7d |
| SHA1 | 475af17dfa9fb2dc370554710fc2b7a4f6bdd2e9 |
| SHA256 | b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa |
| SHA512 | 5f2415687dd44e8e9e2bcc89c1ddc077fad1d789c64f249306e0b10578029b7821588cb3df80dfa545732583eccea091a0f49fdff85d4455546b2691b440acac |
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\szbglych.exe
| MD5 | 195938a648efcaf6fcf0a1a3ccde0b7d |
| SHA1 | 475af17dfa9fb2dc370554710fc2b7a4f6bdd2e9 |
| SHA256 | b275f024acde70ac070eb766969a1227ccbf34b4012dbef68d0db0d2910b3caa |
| SHA512 | 5f2415687dd44e8e9e2bcc89c1ddc077fad1d789c64f249306e0b10578029b7821588cb3df80dfa545732583eccea091a0f49fdff85d4455546b2691b440acac |