formbook | f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0

Virtualization/Sandbox Evasion

Processes:

f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

Processes:

f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

T1082

Processes:

f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exeRegSvcs.exeNAPSTAT.EXE

description	pid	process	target process
PID 1936 set thread context of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 568 set thread context of 1380	568	RegSvcs.exe	Explorer.EXE
PID 684 set thread context of 1380	684	NAPSTAT.EXE	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

980 schtasks.exe

pid	process
980	schtasks.exe

Suspicious behavior: EnumeratesProcesses 45 IoCs

Processes:

powershell.exepowershell.exeRegSvcs.exeNAPSTAT.EXE

pid	process
1692	powershell.exe
624	powershell.exe
568	RegSvcs.exe
568	RegSvcs.exe
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE
684	NAPSTAT.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exeNAPSTAT.EXE

pid process

568 RegSvcs.exe
568 RegSvcs.exe
568 RegSvcs.exe
684 NAPSTAT.EXE
684 NAPSTAT.EXE

pid	process
1380	Explorer.EXE

pid	process
568	RegSvcs.exe
568	RegSvcs.exe
568	RegSvcs.exe
684	NAPSTAT.EXE
684	NAPSTAT.EXE

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

powershell.exepowershell.exeRegSvcs.exeNAPSTAT.EXEExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	624	powershell.exe
Token: SeDebugPrivilege	1692	powershell.exe
Token: SeDebugPrivilege	568	RegSvcs.exe
Token: SeDebugPrivilege	684	NAPSTAT.EXE
Token: SeShutdownPrivilege	1380	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1380 Explorer.EXE
1380 Explorer.EXE

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

pid	process
1380	Explorer.EXE
1380	Explorer.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exeExplorer.EXENAPSTAT.EXE

description	pid	process	target process
PID 1936 wrote to memory of 624	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 624	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 624	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 624	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 1692	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 1692	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 1692	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 1692	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	powershell.exe
PID 1936 wrote to memory of 980	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	schtasks.exe
PID 1936 wrote to memory of 980	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	schtasks.exe
PID 1936 wrote to memory of 980	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	schtasks.exe
PID 1936 wrote to memory of 980	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	schtasks.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1936 wrote to memory of 568	1936	f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe	RegSvcs.exe
PID 1380 wrote to memory of 684	1380	Explorer.EXE	NAPSTAT.EXE
PID 1380 wrote to memory of 684	1380	Explorer.EXE	NAPSTAT.EXE
PID 1380 wrote to memory of 684	1380	Explorer.EXE	NAPSTAT.EXE
PID 1380 wrote to memory of 684	1380	Explorer.EXE	NAPSTAT.EXE
PID 684 wrote to memory of 972	684	NAPSTAT.EXE	cmd.exe
PID 684 wrote to memory of 972	684	NAPSTAT.EXE	cmd.exe
PID 684 wrote to memory of 972	684	NAPSTAT.EXE	cmd.exe
PID 684 wrote to memory of 972	684	NAPSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1380

C:\Users\Admin\AppData\Local\Temp\f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe
"C:\Users\Admin\AppData\Local\Temp\f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe"
2⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1936

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\f0520738f5b3e513d729ec8034c934ab84b803b5fb8c06cf328f279b42e89fa0.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:624

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rxvXbVNKsySUf.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1692

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rxvXbVNKsySUf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCC.tmp"
3⤵
- Creates scheduled task(s)
PID:980

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:568

C:\Windows\SysWOW64\NAPSTAT.EXE
"C:\Windows\SysWOW64\NAPSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:684

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:972

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Query Registry

4

Virtualization/Sandbox Evasion

2

System Information Discovery

3

T1082

Peripheral Device Discovery