Resubmissions

21-09-2024 00:16

240921-akt3fawcmb 10

20-09-2024 23:58

240920-31k4pavgpb 6

General

  • Target

    microsoft-teams-24231.512.3106.6573-installer_9-VhmF1.exe

  • Size

    1.7MB

  • Sample

    240921-akt3fawcmb

  • MD5

    dad2ff08424cca6f90d768d8f2edadb0

  • SHA1

    a7f7acd7fc5c627043e1a735059b744d1991f566

  • SHA256

    a619aca857a8f1bfcd2e64685354943cb9c415e7b70507307cc93df4654f4077

  • SHA512

    23c169c99e04800109e10fbbc89683b5b09d57f641b1b0b074c81c57560c85b7ef30b938e6effc73de5540ce40df7919283a1b9e8c3f73c1c62a6f1b0052414f

  • SSDEEP

    24576:y7FUDowAyrTVE3U5F/2LuHhCLW1cercfgKflOF6OE1L2bOI9zox2vzL:yBuZrEU5LcNOEj1JItoSzL

Malware Config

Targets

    • Target

      microsoft-teams-24231.512.3106.6573-installer_9-VhmF1.exe

    • Size

      1.7MB

    • MD5

      dad2ff08424cca6f90d768d8f2edadb0

    • SHA1

      a7f7acd7fc5c627043e1a735059b744d1991f566

    • SHA256

      a619aca857a8f1bfcd2e64685354943cb9c415e7b70507307cc93df4654f4077

    • SHA512

      23c169c99e04800109e10fbbc89683b5b09d57f641b1b0b074c81c57560c85b7ef30b938e6effc73de5540ce40df7919283a1b9e8c3f73c1c62a6f1b0052414f

    • SSDEEP

      24576:y7FUDowAyrTVE3U5F/2LuHhCLW1cercfgKflOF6OE1L2bOI9zox2vzL:yBuZrEU5LcNOEj1JItoSzL

    • Cobalt Strike reflective loader

      Detects the reflective loader used by Cobalt Strike.

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Drops file in Drivers directory

    • Checks BIOS information in registry

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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Downloads MZ/PE file

    • Enumerates connected drives

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

    • Modifies powershell logging option

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • 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