stealc | 9c11c097d708312b0a43173749d4eb68cec4f8d4a4102e1345c0e80789da3e8c

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.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	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.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-1-5-21-1302416131-1437503476-2806442725-1000\Software\Wine	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe

Loads dropped DLL 2 IoCs

pid	Process
4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe
4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.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 3 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

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

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 1 IoCs

pid	Process
4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.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	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3692	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe
4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe
4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe
4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4676 wrote to memory of 1200	4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe	86
PID 4676 wrote to memory of 1200	4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe	86
PID 4676 wrote to memory of 1200	4676	1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe	86
PID 1200 wrote to memory of 3692	1200	cmd.exe	88
PID 1200 wrote to memory of 3692	1200	cmd.exe	88
PID 1200 wrote to memory of 3692	1200	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe
"C:\Users\Admin\AppData\Local\Temp\1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.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:4676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\1cb080c3d69281ff2af28a3b9f448ba493bba28b1c2fde989d5fe91eef4689ea.exe" & del "C:\ProgramData\*.dll"" & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1200
- - C:\Windows\SysWOW64\timeout.exe
    timeout /t 5
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3692

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion