Resubmissions

23-12-2024 21:21

241223-z7fwrs1rcr 9

23-12-2024 21:05

241223-zw8sea1mfs 9

23-12-2024 20:57

241223-zrznya1ldx 9

General

  • Target

    https://cdn.discordapp.com/attachments/1282174183467384855/1282175372150181898/BootstrapperV1.18_4.exe?ex=676ace1e&is=67697c9e&hm=3ccc40795bb30a7897d308a7232b463b0a8c2c518f4deb5cf58eea72254787b3&

  • Sample

    241223-z7fwrs1rcr

Malware Config

Targets

    • Target

      https://cdn.discordapp.com/attachments/1282174183467384855/1282175372150181898/BootstrapperV1.18_4.exe?ex=676ace1e&is=67697c9e&hm=3ccc40795bb30a7897d308a7232b463b0a8c2c518f4deb5cf58eea72254787b3&

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

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • 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.

    • 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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Blocklisted process makes network request

    • Checks whether UAC is enabled

    • 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

    • Checks system information in the registry

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

    • Detected potential entity reuse from brand MICROSOFT.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks