General

  • Target

    https://cdn.discordapp.com/attachments/1247678872124788919/1251336967988183050/CrystalUPDATED.rar?ex=666e35dd&is=666ce45d&hm=1a921b2d1396611888ad9205788c2715a99b31e18d0acaed35c1d989abd7dccd&

  • Sample

    240615-a9j9jatarc

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1247678872124788919/1251336967988183050/CrystalUPDATED.rar?ex=666e35dd&is=666ce45d&hm=1a921b2d1396611888ad9205788c2715a99b31e18d0acaed35c1d989abd7dccd&

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • AgentTesla payload

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

    • Checks BIOS information in registry

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks