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General

  • Target

    409b216bb2d2747140b1a05b5cbc9fc8ff21bd1dbe6635a67d1d71a69a92da21.exe

  • Size

    998KB

  • Sample

    240612-bqltpaxenj

  • MD5

    7641b5e9a95918508f0acecc8739efc4

  • SHA1

    f6a6a343af6aaa323c8eb3d578a709d0c30a9819

  • SHA256

    409b216bb2d2747140b1a05b5cbc9fc8ff21bd1dbe6635a67d1d71a69a92da21

  • SHA512

    9092420d8de2fa38bebea8566652bb004b80390a0c638f705f1e15275d4651b521f9f3c2a9c1ef4b80991509cc5782dfd160bde79e1d2ad767895ba13aa0872c

  • SSDEEP

    24576:XAjH3DIlB5pwpW5EMg+F9/BG0d2ZtDeUmaXYC9XDoCqbl:wP4ipmg+F9/Bl27dYgXcl

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.estampar.com.br
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    fHd@4AxQSHIS

Targets

    • Target

      409b216bb2d2747140b1a05b5cbc9fc8ff21bd1dbe6635a67d1d71a69a92da21.exe

    • Size

      998KB

    • MD5

      7641b5e9a95918508f0acecc8739efc4

    • SHA1

      f6a6a343af6aaa323c8eb3d578a709d0c30a9819

    • SHA256

      409b216bb2d2747140b1a05b5cbc9fc8ff21bd1dbe6635a67d1d71a69a92da21

    • SHA512

      9092420d8de2fa38bebea8566652bb004b80390a0c638f705f1e15275d4651b521f9f3c2a9c1ef4b80991509cc5782dfd160bde79e1d2ad767895ba13aa0872c

    • SSDEEP

      24576:XAjH3DIlB5pwpW5EMg+F9/BG0d2ZtDeUmaXYC9XDoCqbl:wP4ipmg+F9/Bl27dYgXcl

    • AgentTesla

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

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • Detects executables referencing Windows vault credential objects. Observed in infostealers

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • Detects executables referencing many file transfer clients. Observed in information stealers

    • 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