General

  • Target

    rustup-init.exe

  • Size

    8.2MB

  • Sample

    231103-dn8lsadb56

  • MD5

    b41bba88051691d3038e7c7cad44cd48

  • SHA1

    ffd0dba9a1901022e0c73001a024186076a60fa4

  • SHA256

    365d072ac4ef47f8774f4d2094108035e2291a0073702db25fa7797a30861fc9

  • SHA512

    a8c62860e89af6127254aa9901e5cf970bb29a31430e5030a07a37805a88c8eee18f6c28bda5f872cc06743b3000c78778429da2e844075df71a5424b8b66cbc

  • SSDEEP

    98304:QKuggmFI9hZTJE49bt/9l9w7R1l4B21tg2+QHVh:JhIzo4Rl9w7Ll20/p

Malware Config

Targets

    • Target

      rustup-init.exe

    • Size

      8.2MB

    • MD5

      b41bba88051691d3038e7c7cad44cd48

    • SHA1

      ffd0dba9a1901022e0c73001a024186076a60fa4

    • SHA256

      365d072ac4ef47f8774f4d2094108035e2291a0073702db25fa7797a30861fc9

    • SHA512

      a8c62860e89af6127254aa9901e5cf970bb29a31430e5030a07a37805a88c8eee18f6c28bda5f872cc06743b3000c78778429da2e844075df71a5424b8b66cbc

    • SSDEEP

      98304:QKuggmFI9hZTJE49bt/9l9w7R1l4B21tg2+QHVh:JhIzo4Rl9w7Ll20/p

    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Modifies Windows Firewall

    • Sets file execution options in registry

    • 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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Checks system information in the registry

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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks