amadey | 7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e

Virtualization/Sandbox Evasion

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

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 10 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	explorti.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorti.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	GCGCBAECFC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	GCGCBAECFC.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorti.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorti.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorti.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorti.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorti.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorti.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	GCGCBAECFC.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 5 IoCs

pid	Process
1232	GCGCBAECFC.exe
624	explorti.exe
4220	explorti.exe
3472	explorti.exe
3152	explorti.exe

Identifies Wine through registry keys 2 TTPs 5 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Software\Wine	GCGCBAECFC.exe
Key opened	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Software\Wine	explorti.exe
Key opened	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Software\Wine	explorti.exe
Key opened	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Software\Wine	explorti.exe
Key opened	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\Software\Wine	explorti.exe

Loads dropped DLL 2 IoCs

pid	Process
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs

pid	Process
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
1232	GCGCBAECFC.exe
624	explorti.exe
4220	explorti.exe
3472	explorti.exe
3152	explorti.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\explorti.job	GCGCBAECFC.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor 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\CentralProcessor\0\ProcessorNameString	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
1232	GCGCBAECFC.exe
1232	GCGCBAECFC.exe
624	explorti.exe
624	explorti.exe
4220	explorti.exe
4220	explorti.exe
3472	explorti.exe
3472	explorti.exe
3152	explorti.exe
3152	explorti.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
1008	cmd.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 1736	4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe	86
PID 4984 wrote to memory of 1736	4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe	86
PID 4984 wrote to memory of 1736	4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe	86
PID 4984 wrote to memory of 1008	4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe	88
PID 4984 wrote to memory of 1008	4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe	88
PID 4984 wrote to memory of 1008	4984	7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe	88
PID 1736 wrote to memory of 1232	1736	cmd.exe	90
PID 1736 wrote to memory of 1232	1736	cmd.exe	90
PID 1736 wrote to memory of 1232	1736	cmd.exe	90
PID 1232 wrote to memory of 624	1232	GCGCBAECFC.exe	91
PID 1232 wrote to memory of 624	1232	GCGCBAECFC.exe	91
PID 1232 wrote to memory of 624	1232	GCGCBAECFC.exe	91

C:\Users\Admin\AppData\Local\Temp\7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe
"C:\Users\Admin\AppData\Local\Temp\7614f3191e218056402bb21b5349f37435d986f7d81954555d6b776df808b18e.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\GCGCBAECFC.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1736
- - C:\Users\Admin\AppData\Local\Temp\GCGCBAECFC.exe
    "C:\Users\Admin\AppData\Local\Temp\GCGCBAECFC.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Checks computer location settings
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1232
  - - C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe
      "C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"
      4⤵
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Checks BIOS information in registry
      Executes dropped EXE
      Identifies Wine through registry keys
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Suspicious behavior: EnumeratesProcesses
      PID:624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\HCFBKKEBKE.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  PID:1008

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe
C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:4220

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe
C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:3472

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe
C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:3152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

System Information Discovery

Virtualization/Sandbox Evasion