766cbf928aa8df56f81cf4e8418126e04004a70d3d82a62990dde4a61fb9897c

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	WlndowsDraiver-Ver0.5.2.5.exe

Executes dropped EXE 1 IoCs

pid	Process
3416	WlndowsDraiver-Ver0.5.2.5.exe

Checks BIOS information in registry 2 TTPs 4 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	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	WlndowsDraiver-Ver0.5.2.5.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	WlndowsDraiver-Ver0.5.2.5.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

Modifies file permissions 1 TTPs 3 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3184	icacls.exe
3576	icacls.exe
4444	icacls.exe

Themida packer 5 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2320-133-0x00007FF6DE680000-0x00007FF6DECBA000-memory.dmp	themida
behavioral2/files/0x0004000000022de5-136.dat	themida
behavioral2/memory/2320-138-0x00007FF6DE680000-0x00007FF6DECBA000-memory.dmp	themida
behavioral2/files/0x0004000000022de5-139.dat	themida
behavioral2/memory/3416-140-0x00007FF729160000-0x00007FF72979A000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	file.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	WlndowsDraiver-Ver0.5.2.5.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

pid	Process
4380	schtasks.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 4380	2320	file.exe	42
PID 2320 wrote to memory of 4380	2320	file.exe	42
PID 2320 wrote to memory of 3184	2320	file.exe	88
PID 2320 wrote to memory of 3184	2320	file.exe	88
PID 2320 wrote to memory of 3576	2320	file.exe	90
PID 2320 wrote to memory of 3576	2320	file.exe	90
PID 2320 wrote to memory of 4444	2320	file.exe	92
PID 2320 wrote to memory of 4444	2320	file.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Checks whether UAC is enabled
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /CREATE /TN "Wlndows\InteIComputingTooIklt\IntelPalnt0.5.2.5." /TR "C:\ProgramData\MsiProject\WlndowsDraiver-Ver0.5.2.5.exe" /SC MINUTE
  2⤵
  - Creates scheduled task(s)
  PID:4380
- C:\Windows\System32\icacls.exe
  "C:\Windows\System32\icacls.exe" "C:\ProgramData\MsiProject" /inheritance:e /deny "*S-1-1-0:(R,REA,RA,RD)"
  2⤵
  - Modifies file permissions
  PID:3184
- C:\Windows\System32\icacls.exe
  "C:\Windows\System32\icacls.exe" "C:\ProgramData\MsiProject" /inheritance:e /deny "*S-1-5-7:(R,REA,RA,RD)"
  2⤵
  - Modifies file permissions
  PID:3576
- C:\Windows\System32\icacls.exe
  "C:\Windows\System32\icacls.exe" "C:\ProgramData\MsiProject" /inheritance:e /deny "admin:(R,REA,RA,RD)"
  2⤵
  - Modifies file permissions
  PID:4444

C:\ProgramData\MsiProject\WlndowsDraiver-Ver0.5.2.5.exe
C:\ProgramData\MsiProject\WlndowsDraiver-Ver0.5.2.5.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
PID:3416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

File and Directory Permissions Modification

T1222

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

Virtualization/Sandbox Evasion