recordbreaker | 3252f6acde19aa764d3545b47e3f72ef02cc857df9ced5c0f1b01b48acf81eef

Virtualization/Sandbox Evasion

T1497

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

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1692	6z10uR9b.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	setup.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	setup.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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	setup.exe

Loads dropped DLL 3 IoCs

pid	Process
832	setup.exe
832	setup.exe
832	setup.exe

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
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

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	setup.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
832	setup.exe
1692	6z10uR9b.exe
1692	6z10uR9b.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

pid	Process
2312	schtasks.exe
4860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
832	setup.exe
832	setup.exe
832	setup.exe
832	setup.exe
832	setup.exe
832	setup.exe
1692	6z10uR9b.exe
1692	6z10uR9b.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 832 wrote to memory of 1692	832	setup.exe	84
PID 832 wrote to memory of 1692	832	setup.exe	84
PID 832 wrote to memory of 1692	832	setup.exe	84
PID 1692 wrote to memory of 4860	1692	6z10uR9b.exe	85
PID 1692 wrote to memory of 4860	1692	6z10uR9b.exe	85
PID 1692 wrote to memory of 4860	1692	6z10uR9b.exe	85
PID 1692 wrote to memory of 688	1692	6z10uR9b.exe	87
PID 1692 wrote to memory of 688	1692	6z10uR9b.exe	87
PID 1692 wrote to memory of 688	1692	6z10uR9b.exe	87
PID 1692 wrote to memory of 2312	1692	6z10uR9b.exe	89
PID 1692 wrote to memory of 2312	1692	6z10uR9b.exe	89
PID 1692 wrote to memory of 2312	1692	6z10uR9b.exe	89

C:\Users\Admin\AppData\Local\Temp\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks computer location settings
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:832
- C:\Users\Admin\AppData\Roaming\6z10uR9b.exe
  "C:\Users\Admin\AppData\Roaming\6z10uR9b.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 5 /tn "NodeJSEnvironmentUpdateTask" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\WmiPrvSE.exe"
    3⤵
    - Creates scheduled task(s)
    PID:4860
- - C:\Windows\SysWOW64\schtasks.exe
    /C /Query /XML /TN "NodeJSEnvironmentUpdateTask"
    3⤵
    PID:688
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /tn "NodeJSEnvironmentUpdateTask" /XML "C:\Users\Admin\AppData\Roaming\Microsoft\AddIns\hC5zF4xW4pD6iF6a.xml"
    3⤵
    - Creates scheduled task(s)
    PID:2312

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

2

T1081

Discovery

Query Registry

4

System Information Discovery

4

Virtualization/Sandbox Evasion