General

  • Target
    Purchase Order.exe
  • Size 651KB
  • Sample201005-2wt17xs8sn
  • SHA256 96c4bcff0df93379d1447731b9fd7738ded981e16b2a646668ae1bed2f72a320
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.swedish-hospital.com

  • Port

    587

  • Password

    Swe2017?

Targets

    • Target
      Purchase Order.exe
    • Size 651KB
    • SHA256 96c4bcff0df93379d1447731b9fd7738ded981e16b2a646668ae1bed2f72a320
    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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