Analysis Overview
SHA256
5ccc7cf886a54dfc66eac92fc4cb4acc8cfc5069ca3912abb4f8801831bf1fdc
Threat Level: Known bad
The file A9ZFW_file.exe was found to be: Known bad.
Malicious Activity Summary
Stealc
Stealc family
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Unsecured Credentials: Credentials In Files
Identifies Wine through registry keys
Checks BIOS information in registry
Checks computer location settings
Reads data files stored by FTP clients
Deletes itself
Checks installed software on the system
Suspicious use of NtSetInformationThreadHideFromDebugger
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Unsigned PE
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-10-27 16:20
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-10-27 16:20
Reported
2024-10-27 16:22
Platform
win7-20241010-en
Max time kernel
121s
Max time network
125s
Command Line
Signatures
Stealc
Stealc family
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Identifies Wine through registry keys
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Reads data files stored by FTP clients
Unsecured Credentials: Credentials In Files
Checks installed software on the system
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.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\A9ZFW_file.exe | N/A |
| 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:\Windows\SysWOW64\timeout.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2900 wrote to memory of 1016 | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2900 wrote to memory of 1016 | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2900 wrote to memory of 1016 | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2900 wrote to memory of 1016 | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1016 wrote to memory of 2428 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 1016 wrote to memory of 2428 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 1016 wrote to memory of 2428 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 1016 wrote to memory of 2428 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe
"C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe" & del "C:\ProgramData\*.dll"" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 5
Network
| Country | Destination | Domain | Proto |
| RU | 185.215.113.206:80 | 185.215.113.206 | tcp |
Files
memory/2900-0-0x0000000000CA0000-0x000000000133F000-memory.dmp
memory/2900-1-0x0000000077D20000-0x0000000077D22000-memory.dmp
memory/2900-2-0x0000000000CA1000-0x0000000000CC4000-memory.dmp
memory/2900-3-0x0000000000CA0000-0x000000000133F000-memory.dmp
memory/2900-4-0x0000000000CA0000-0x000000000133F000-memory.dmp
memory/2900-7-0x0000000000CA0000-0x000000000133F000-memory.dmp
memory/2900-5-0x0000000000CA0000-0x000000000133F000-memory.dmp
memory/2900-6-0x0000000000CA0000-0x000000000133F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-10-27 16:20
Reported
2024-10-27 16:22
Platform
win10v2004-20241007-en
Max time kernel
135s
Max time network
142s
Command Line
Signatures
Stealc
Stealc family
Identifies VirtualBox via ACPI registry values (likely anti-VM)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Checks BIOS information in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Identifies Wine through registry keys
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Software\Wine | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Reads data files stored by FTP clients
Unsecured Credentials: Credentials In Files
Checks installed software on the system
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.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\A9ZFW_file.exe | N/A |
| 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:\Windows\SysWOW64\timeout.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\timeout.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1056 wrote to memory of 3472 | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1056 wrote to memory of 3472 | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 1056 wrote to memory of 3472 | N/A | C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3472 wrote to memory of 2640 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 3472 wrote to memory of 2640 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
| PID 3472 wrote to memory of 2640 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\Windows\SysWOW64\timeout.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe
"C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe"
C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\A9ZFW_file.exe" & del "C:\ProgramData\*.dll"" & exit
C:\Windows\SysWOW64\timeout.exe
timeout /t 5
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| RU | 185.215.113.206:80 | 185.215.113.206 | tcp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.113.215.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.28.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 212.20.149.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 107.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
Files
memory/1056-0-0x0000000000C00000-0x000000000129F000-memory.dmp
memory/1056-1-0x0000000077DD4000-0x0000000077DD6000-memory.dmp
memory/1056-2-0x0000000000C01000-0x0000000000C24000-memory.dmp
memory/1056-3-0x0000000000C00000-0x000000000129F000-memory.dmp
memory/1056-5-0x0000000000C00000-0x000000000129F000-memory.dmp