General

  • Target

    Invoice Request.scr.exe

  • Size

    701KB

  • Sample

    240910-q8ntbsyajc

  • MD5

    6f605fd10c79ec475befda0cd232f38b

  • SHA1

    8b015776a4e0e1ba8495f89296b4eb5293faba33

  • SHA256

    c41893463c861e8d6274f2d5f5335ba4d23dfe4c6d6d65d8bc08eec140b4890d

  • SHA512

    24de79629da70f73f56576438965b653578888576be7013cc814af92c7cba1ae29517e245b0469ee842133c16a00611b3b96b87432c23c13093e0062f301d823

  • SSDEEP

    12288:ksK8s/+/yHUvONddAckNe5xAkO5IGGswKPS3JFn0C53tqksN7t0lTO3tz0:RiMywONddAdN2ek975n3a97mO9

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Password: )NYyffR0

Targets

    • Target

      Invoice Request.scr.exe

    • Size

      701KB

    • MD5

      6f605fd10c79ec475befda0cd232f38b

    • SHA1

      8b015776a4e0e1ba8495f89296b4eb5293faba33

    • SHA256

      c41893463c861e8d6274f2d5f5335ba4d23dfe4c6d6d65d8bc08eec140b4890d

    • SHA512

      24de79629da70f73f56576438965b653578888576be7013cc814af92c7cba1ae29517e245b0469ee842133c16a00611b3b96b87432c23c13093e0062f301d823

    • SSDEEP

      12288:ksK8s/+/yHUvONddAckNe5xAkO5IGGswKPS3JFn0C53tqksN7t0lTO3tz0:RiMywONddAdN2ek975n3a97mO9

    • 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