Analysis Overview
SHA256
10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d
Threat Level: Known bad
The file 10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe was found to be: Known bad.
Malicious Activity Summary
Kutaki family
Enumerates connected drives
Adds Run key to start application
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Checks processor information in registry
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SendNotifyMessage
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of FindShellTrayWindow
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-15 10:23
Signatures
Kutaki family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-15 10:23
Reported
2024-11-15 10:25
Platform
win7-20241010-en
Max time kernel
127s
Max time network
88s
Command Line
Signatures
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\RESTART_STICKY_NOTES = "C:\\Windows\\system32\\StikyNot.exe" | C:\Windows\system32\StikyNot.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\F: | C:\Windows\System32\perfmon.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\System32\perfmon.exe | N/A |
| Key opened | \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\System32\perfmon.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\System32\perfmon.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: 33 | N/A | C:\Windows\System32\perfmon.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\System32\perfmon.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe
"C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe"
C:\Windows\System32\perfmon.exe
"C:\Windows\System32\perfmon.exe" /res
C:\Windows\system32\StikyNot.exe
"C:\Windows\system32\StikyNot.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 1.0.127.10.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 252.0.0.224.in-addr.arpa | udp |
Files
memory/2680-2-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/2680-3-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/2200-4-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/2200-5-0x0000000140000000-0x00000001405E8000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-15 10:23
Reported
2024-11-15 10:26
Platform
win10v2004-20241007-en
Max time kernel
93s
Max time network
151s
Command Line
Signatures
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\cmd.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4784 wrote to memory of 4008 | N/A | C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4784 wrote to memory of 4008 | N/A | C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4784 wrote to memory of 4008 | N/A | C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe | C:\Windows\SysWOW64\cmd.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe
"C:\Users\Admin\AppData\Local\Temp\10bc8552d9b63666e0788161c13213c7275fdf6a0c4d3ba3d155036be3f4222d.exe"
C:\Windows\SysWOW64\cmd.exe
cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |