General

  • Target
    NYRNC200420511_FreightArrival.exe
  • Size 446KB
  • Sample201109-5b6bdmhpws
  • SHA256 cb2792644a81d965b332d8d165e1e6f75894b43942a33d7e367f9b3a36d4a2bf
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.karmachalets.co.in

  • Port

    587

  • Password

    Akshya@123

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.karmachalets.co.in

  • Port

    587

  • Password

    Akshya@123

Targets

    • Target
      NYRNC200420511_FreightArrival.exe
    • Size 446KB
    • SHA256 cb2792644a81d965b332d8d165e1e6f75894b43942a33d7e367f9b3a36d4a2bf
    • MD5 SHA1 SHA512
    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • CoreEntity .NET Packer

      A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • rezer0

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • Looks for VMWare Tools registry key

    • Checks BIOS information in registry

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

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Maps connected drives based on registry

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks