General

  • Target

    instalación_en_línea_de_avast_free_antivirus.exe

  • Size

    243KB

  • Sample

    241123-21zfmsxndq

  • MD5

    0c10c0a464c5ee6ebfc85dd2e7c75aa8

  • SHA1

    ba260285bdbe3c20affbe3560e1168d85e45270c

  • SHA256

    af69c54745e98ce066d27e40e029db40f348fe5b0336b13e36eea85de91a94a4

  • SHA512

    5edacd8cdffb906ec5b7a48bd23a61d708529f8c04ca0f218504e975ce7f52c89643f3b959ac4edd8a5482a7811ca08ac8e0a9d3679f785027394fa0a7ef9ad6

  • SSDEEP

    3072:feJbDwLibLaZ/S91gxiJPU3qtmQv2cthYSdqMREwPLr6VsOWPGWyrVFpQMeJqeua:fkDOZargxSHmQv2+B9EwC/pQMeQtq17

Malware Config

Targets

    • Target

      instalación_en_línea_de_avast_free_antivirus.exe

    • Size

      243KB

    • MD5

      0c10c0a464c5ee6ebfc85dd2e7c75aa8

    • SHA1

      ba260285bdbe3c20affbe3560e1168d85e45270c

    • SHA256

      af69c54745e98ce066d27e40e029db40f348fe5b0336b13e36eea85de91a94a4

    • SHA512

      5edacd8cdffb906ec5b7a48bd23a61d708529f8c04ca0f218504e975ce7f52c89643f3b959ac4edd8a5482a7811ca08ac8e0a9d3679f785027394fa0a7ef9ad6

    • SSDEEP

      3072:feJbDwLibLaZ/S91gxiJPU3qtmQv2cthYSdqMREwPLr6VsOWPGWyrVFpQMeJqeua:fkDOZargxSHmQv2+B9EwC/pQMeQtq17

    • Drops file in Drivers directory

    • Manipulates Digital Signatures

      Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.

    • Sets service image path in registry

    • Impair Defenses: Safe Mode Boot

    • Adds Run key to start application

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Checks for any installed AV software in registry

    • Downloads MZ/PE file

    • Writes to the Master Boot Record (MBR)

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

    • Checks computer location settings

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

    • Drops file in System32 directory

    • 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.

MITRE ATT&CK Enterprise v15

Tasks