Resubmissions

03-04-2023 15:00

230403-sdr9dafd89 8

General

  • Target

    Windows_logo_-_2012.svg.png

  • Size

    8KB

  • Sample

    230403-sdr9dafd89

  • MD5

    4f8ee6947b76eda08ff53450cde3e5bf

  • SHA1

    bbff2d77f32b5d2f8353a6697e6a24d198fd7718

  • SHA256

    24cf3815675d27db22099422296a53ab070a4f1d7b19a6030672dbcc40909e5e

  • SHA512

    99797bb74cbd384281633ab4c0d7ddaf3b4450a385cfbd39e852bcaf16d1794683870cb2043305287b52f7332e3697614f2326d6278158645ec91c7b0460fd25

  • SSDEEP

    192:+DyNWwZ5g4Sy4E1g+OaR5yLlDJqB7hdF6AjF51o7fWn2:19qpI1pCDS7rHy7f1

Malware Config

Targets

    • Target

      Windows_logo_-_2012.svg.png

    • Size

      8KB

    • MD5

      4f8ee6947b76eda08ff53450cde3e5bf

    • SHA1

      bbff2d77f32b5d2f8353a6697e6a24d198fd7718

    • SHA256

      24cf3815675d27db22099422296a53ab070a4f1d7b19a6030672dbcc40909e5e

    • SHA512

      99797bb74cbd384281633ab4c0d7ddaf3b4450a385cfbd39e852bcaf16d1794683870cb2043305287b52f7332e3697614f2326d6278158645ec91c7b0460fd25

    • SSDEEP

      192:+DyNWwZ5g4Sy4E1g+OaR5yLlDJqB7hdF6AjF51o7fWn2:19qpI1pCDS7rHy7f1

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets service image path in registry

    • 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

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v6

Tasks