05e7c6e07e56087211ed50e79587181f8ca0d0195f130d2d5e15e90931708665

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	SolarisLoader.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	SolarisUpdated.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	SolarisUpdated.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	SolarisUpdated.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	SolarisLoader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	SolarisLoader.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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	SolarisLoader.exe

Executes dropped EXE 1 IoCs

pid	Process
736	SolarisUpdated.exe

Themida packer 9 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1236-9-0x0000000000A50000-0x000000000130E000-memory.dmp	themida
behavioral2/memory/1236-10-0x0000000000A50000-0x000000000130E000-memory.dmp	themida
behavioral2/files/0x0007000000023505-170.dat	themida
behavioral2/memory/736-178-0x00007FF6BED60000-0x00007FF6BF6C9000-memory.dmp	themida
behavioral2/memory/736-184-0x00007FF6BED60000-0x00007FF6BF6C9000-memory.dmp	themida
behavioral2/memory/736-183-0x00007FF6BED60000-0x00007FF6BF6C9000-memory.dmp	themida
behavioral2/memory/1236-182-0x0000000000A50000-0x000000000130E000-memory.dmp	themida
behavioral2/memory/736-186-0x00007FF6BED60000-0x00007FF6BF6C9000-memory.dmp	themida
behavioral2/memory/736-190-0x00007FF6BED60000-0x00007FF6BF6C9000-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	SolarisLoader.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	SolarisUpdated.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
10	pastebin.com
6	pastebin.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1236	SolarisLoader.exe
736	SolarisUpdated.exe

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 1 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	SolarisLoader.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1236	SolarisLoader.exe
1236	SolarisLoader.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1236	SolarisLoader.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
736	SolarisUpdated.exe
736	SolarisUpdated.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 736	1236	SolarisLoader.exe	90
PID 1236 wrote to memory of 736	1236	SolarisLoader.exe	90

C:\Users\Admin\AppData\Local\Temp\SolarisLoader.exe
"C:\Users\Admin\AppData\Local\Temp\SolarisLoader.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 NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\Documents\SolarisUpdated\SolarisUpdated.exe
  "C:\Users\Admin\Documents\SolarisUpdated\SolarisUpdated.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetWindowsHookEx
  PID:736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Web Service