General

  • Target

    Atualizador_Fiscal_NFe.msi

  • Size

    2.9MB

  • Sample

    241108-nrdwpa1gql

  • MD5

    61b54e1bd417282f38e537804fd1d1db

  • SHA1

    e74d97884bc23404c5860e5f58b5d57242c9c4bc

  • SHA256

    fc706bcf6b6c9c787c723bd168c74ca7ebc228962f78b6f57225b7a45c2dc5e7

  • SHA512

    6d6118c470549949a32885a749e38085f619ae64d68b473ec9bcb13007d25606df78ef67072bad46606fc90fe5c89488b52df64c6401656fac4f432e51b4217b

  • SSDEEP

    49152:j+1Ypn4N2MGVv1zyIBWGppT9jnMHRjOOozjcqZJN8dUZTwYaH7oqPxMbY+K/tzQz:j+lUlz9FKbsodq0YaH7ZPxMb8tT

Malware Config

Targets

    • Target

      Atualizador_Fiscal_NFe.msi

    • Size

      2.9MB

    • MD5

      61b54e1bd417282f38e537804fd1d1db

    • SHA1

      e74d97884bc23404c5860e5f58b5d57242c9c4bc

    • SHA256

      fc706bcf6b6c9c787c723bd168c74ca7ebc228962f78b6f57225b7a45c2dc5e7

    • SHA512

      6d6118c470549949a32885a749e38085f619ae64d68b473ec9bcb13007d25606df78ef67072bad46606fc90fe5c89488b52df64c6401656fac4f432e51b4217b

    • SSDEEP

      49152:j+1Ypn4N2MGVv1zyIBWGppT9jnMHRjOOozjcqZJN8dUZTwYaH7oqPxMbY+K/tzQz:j+lUlz9FKbsodq0YaH7ZPxMb8tT

    • AteraAgent

      AteraAgent is a remote monitoring and management tool.

    • Ateraagent family

    • Detects AteraAgent

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Downloads MZ/PE file

    • 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

    • 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.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks