General

  • Target
    403cb1ca0a8d1b75f8af7b27a3b4ee1913a14300bc1ed521f83d541db73c86c2
  • Size 381KB
  • Sample220521-ayrt8sbac4
  • SHA256 403cb1ca0a8d1b75f8af7b27a3b4ee1913a14300bc1ed521f83d541db73c86c2
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.actionassist.co.uk

  • Port

    587

  • Password

    benjamin76

Targets

    • Target
      New_Order2287.exe
    • Size 564KB
    • SHA256 1a6f810afe2bfeebadb01ab981ec29c7f0f8283570ab3a550f6a6cc4634384e2
    • 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.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Accesses Microsoft Outlook profiles

    • 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