xenorat | fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	svchost.exe

Downloads MZ/PE file

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	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.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	fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053.exe

Executes dropped EXE 1 IoCs

pid	Process
2860	svchost.exe

Themida packer 3 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/files/0x0009000000023c86-4.dat	themida
behavioral2/memory/2860-26-0x0000000000900000-0x00000000012A4000-memory.dmp	themida
behavioral2/memory/2860-28-0x0000000000900000-0x00000000012A4000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe

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

Web Service

T1102

flow	ioc
3	raw.githubusercontent.com
4	raw.githubusercontent.com

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2860	svchost.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 3 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	fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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
4504	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe
2860	svchost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2860	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 688 wrote to memory of 2860	688	fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053.exe	84
PID 688 wrote to memory of 2860	688	fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053.exe	84
PID 688 wrote to memory of 2860	688	fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053.exe	84
PID 2860 wrote to memory of 4504	2860	svchost.exe	96
PID 2860 wrote to memory of 4504	2860	svchost.exe	96
PID 2860 wrote to memory of 4504	2860	svchost.exe	96

C:\Users\Admin\AppData\Local\Temp\fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053.exe
"C:\Users\Admin\AppData\Local\Temp\fe1ee9ecac4633907bf564b4c4068f0a4c32887138312e93653ba6954478a053.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:688
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2860
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /Create /TN "svchost.exe" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC9A9.tmp" /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

T1497

Credential Access

Discovery

Query Registry

System Information Discovery