General

  • Target

    Trojan.MSIL.Formbook.AMAJ.MTB-94fcf4577759c6ba44c9bc4672ca962f27f7f92c5f5ddac01e2abf53767ce2dfN

  • Size

    655KB

  • Sample

    240916-bd2z5s1gnj

  • MD5

    13b35d8e78861524e10b29f6f46a3b20

  • SHA1

    457beca2f81d17662524e3a72da416d56df1b86e

  • SHA256

    94fcf4577759c6ba44c9bc4672ca962f27f7f92c5f5ddac01e2abf53767ce2df

  • SHA512

    e04b6560525aa949328e72672bd75eef7aaef3fcea618d517b45b3844901fe46f027b12e708de42ffe04f64837da746595b121e0e25e8ec5fab41cf454b116da

  • SSDEEP

    12288:ncFGdbZ138dNgrF5aMEgAkxzwhR8ZhdDTidYjsYJznwmie0Bd5E8P3N9i72lPkR:KmSniF5zEgAkx8hIBeyI0nw55xVkEK

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.strato.de
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Oy1)8JSu_qPx(rzV_{Xu

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      Trojan.MSIL.Formbook.AMAJ.MTB-94fcf4577759c6ba44c9bc4672ca962f27f7f92c5f5ddac01e2abf53767ce2dfN

    • Size

      655KB

    • MD5

      13b35d8e78861524e10b29f6f46a3b20

    • SHA1

      457beca2f81d17662524e3a72da416d56df1b86e

    • SHA256

      94fcf4577759c6ba44c9bc4672ca962f27f7f92c5f5ddac01e2abf53767ce2df

    • SHA512

      e04b6560525aa949328e72672bd75eef7aaef3fcea618d517b45b3844901fe46f027b12e708de42ffe04f64837da746595b121e0e25e8ec5fab41cf454b116da

    • SSDEEP

      12288:ncFGdbZ138dNgrF5aMEgAkxzwhR8ZhdDTidYjsYJznwmie0Bd5E8P3N9i72lPkR:KmSniF5zEgAkx8hIBeyI0nw55xVkEK

    • AgentTesla

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • 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

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks