General

  • Target

    Ds1m7vqeVcwZRKF.exe

  • Size

    640KB

  • Sample

    240917-r3xdysycnb

  • MD5

    4a90f11d1d20d21bff2b39a6318323db

  • SHA1

    c26d09b8004b6f9b1a3cbf9a1cf612f70344c0b6

  • SHA256

    c33f479dbf220bcc94b3ec3b50291bcb563dd42be1c93f946b06d162ad913675

  • SHA512

    c2cd0944c29216459797b06c6df9502402604a51c469e02d7383ad89399c7b792d60586781c71ada044a2456975f8561aa42258bc5477aa439283e5360fb9238

  • SSDEEP

    12288:O6Fbylg0LO2zqsnelpU4DySbSDC2CrzQ2px4hiMEouh:Okag5w74HbIC2mwgMEnh

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.apexrnun.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    %qroUozO;(C2Rlyb

Targets

    • Target

      Ds1m7vqeVcwZRKF.exe

    • Size

      640KB

    • MD5

      4a90f11d1d20d21bff2b39a6318323db

    • SHA1

      c26d09b8004b6f9b1a3cbf9a1cf612f70344c0b6

    • SHA256

      c33f479dbf220bcc94b3ec3b50291bcb563dd42be1c93f946b06d162ad913675

    • SHA512

      c2cd0944c29216459797b06c6df9502402604a51c469e02d7383ad89399c7b792d60586781c71ada044a2456975f8561aa42258bc5477aa439283e5360fb9238

    • SSDEEP

      12288:O6Fbylg0LO2zqsnelpU4DySbSDC2CrzQ2px4hiMEouh:Okag5w74HbIC2mwgMEnh

    • 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.

    • 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