General

  • Target
    SecuriteInfo.com.W32.AIDetectNet.01.24275.23860
  • Size 37KB
  • Sample220519-c5a66sabf4
  • SHA256 4dec45a4095ce92e7bc46962358c73f3e52b57a13128947fcebeeed3d866ff5e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • blustealer

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    *p=N(5r?6=L*

Extracted

Family
  • agenttesla

C2
  • http://45.133.1.41/ony3/inc/b8970c3d73430d.php

Targets

    • Target
      SecuriteInfo.com.W32.AIDetectNet.01.24275.23860
    • Size 37KB
    • SHA256 4dec45a4095ce92e7bc46962358c73f3e52b57a13128947fcebeeed3d866ff5e
    • MD5 SHA1 SHA512
    • AgentTesla

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

    • BluStealer

      A Modular information stealer written in Visual Basic.

    • suricata: ET MALWARE AgentTesla Communicating with CnC Server

      suricata: ET MALWARE AgentTesla Communicating with CnC Server

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • 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

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks