stealc | 031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.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	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe

Identifies Wine through registry keys 2 TTPs 1 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-1-5-21-3350944739-639801879-157714471-1000\Software\Wine	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe

Loads dropped DLL 1 IoCs

pid	Process
2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.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
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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 1 IoCs

pid	Process
2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.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	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
8	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe
2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe
2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe
2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 2096	2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe	86
PID 2504 wrote to memory of 2096	2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe	86
PID 2504 wrote to memory of 2096	2504	031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe	86
PID 2096 wrote to memory of 8	2096	cmd.exe	89
PID 2096 wrote to memory of 8	2096	cmd.exe	89
PID 2096 wrote to memory of 8	2096	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe
"C:\Users\Admin\AppData\Local\Temp\031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\031c985ef3fa8e36336ea00598aeeabd410303b7cf8c3b1103386c89163b62c6.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:8

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

6

System Information Discovery

4

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion