asyncrat | a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Oracle\VirtualBox Guest Additions	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3168	powershell.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.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

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 968 set thread context of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
3376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
3168	powershell.exe
968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
3168	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
Token: SeDebugPrivilege	3168	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 3168	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	98
PID 968 wrote to memory of 3168	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	98
PID 968 wrote to memory of 3168	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	98
PID 968 wrote to memory of 3376	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	100
PID 968 wrote to memory of 3376	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	100
PID 968 wrote to memory of 3376	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	100
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101
PID 968 wrote to memory of 3944	968	a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe	101

C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
"C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"
1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:968
- 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\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3168
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wHlcNFpFfEV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4DD.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3376
- C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe
  "C:\Users\Admin\AppData\Local\Temp\a816dde75699e34081f10b3c70c6a1b847a25966ba6844c7f62da0d35ad95402.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3944

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion