General

  • Target
    INVITATION TO BID FOR TENDER.exe
  • Size 951KB
  • Sample200909-nnlcbya13e
  • SHA256 8ae671d5515672bc6adbb32d2ab738ddb93d00553679c01ac69575f451cf97f2
  • MD5 SHA1 SHA512

Malware Config

Extracted

Credentials
  • Protocol

    smtp

  • Host

    mail.subzerosolution.com

  • Port

    587

  • Password

    subzero123porc

Targets

    • Target
      INVITATION TO BID FOR TENDER.exe
    • Size 951KB
    • SHA256 8ae671d5515672bc6adbb32d2ab738ddb93d00553679c01ac69575f451cf97f2
    • MD5 SHA1 SHA512
    • AgentTesla

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

    • AgentTesla Payload

    • Looks for VirtualBox Guest Additions in registry

    • 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.

    • Adds Run key to start application

    • 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