Resubmissions

11/05/2026, 19:16

260511-xza97scw3j10

11/05/2026, 19:11

260511-xv1pascv7q10

11/05/2026, 19:06

260511-xr6fdacv4k10

General

  • Target
    https://chomikuj.pl/action/redirect?url=https%3A%2F%2Ftinyurl.com%2Fyckumn8z&token=26384e27c6a72ff6ba2f3352ec900003fbf00f46
  • Sample260511-xv1pascv7q

Malware Config

Targets

    • Target
      https://chomikuj.pl/action/redirect?url=https%3A%2F%2Ftinyurl.com%2Fyckumn8z&token=26384e27c6a72ff6ba2f3352ec900003fbf00f46
    • Detects KillMBR

    • Family: KillMBR

      KillMBR is a trojan that attempts to overwrite the Master Boot Record.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v16

Tasks