Resubmissions

28-08-2024 20:08

240828-ywna2avgrk 9

21-08-2024 21:30

240821-1cr6zsvgpl 9

General

  • Target

    https://drive.google.com/file/d/1JEyJqUbETAl_TA4ESa8y69PfADZjNP6g/view?usp=sharing

  • Sample

    240828-ywna2avgrk

Malware Config

Targets

    • Target

      https://drive.google.com/file/d/1JEyJqUbETAl_TA4ESa8y69PfADZjNP6g/view?usp=sharing

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Network Share Discovery

      Attempt to gather information on host network.

    • Detected potential entity reuse from brand microsoft.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks