General

  • Target

    b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8.exe

  • Size

    752KB

  • Sample

    240604-b8n2rshb9x

  • MD5

    9d298ef6ed274464d796c2a85dd5d68a

  • SHA1

    1ed24cfe751f662f660b6c3d3c287251ae2a4534

  • SHA256

    b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8

  • SHA512

    9c1afb6944819d91aae4a5168d801905d78057bfc3d67a4ad65c556f4a30fee160c061d34d5c6881c6bb42ccd7dd45e4189774e38d2a92c41d828a10171a0b03

  • SSDEEP

    12288:d7kpO8mUKNr+uyigeiP4iMJVYQPqgm39A7ekH4wCKjyBDVE0zgog2Qd6fJzRV:l82Cuy2iVMJV5PPG9AicCXBhJgD2QwBT

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.claresbout.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    fahaF^V7

Targets

    • Target

      b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8.exe

    • Size

      752KB

    • MD5

      9d298ef6ed274464d796c2a85dd5d68a

    • SHA1

      1ed24cfe751f662f660b6c3d3c287251ae2a4534

    • SHA256

      b82a98ffcab1e68feb181d6496a7d1df822608fc3527be0f6bd974e3bb8ff5a8

    • SHA512

      9c1afb6944819d91aae4a5168d801905d78057bfc3d67a4ad65c556f4a30fee160c061d34d5c6881c6bb42ccd7dd45e4189774e38d2a92c41d828a10171a0b03

    • SSDEEP

      12288:d7kpO8mUKNr+uyigeiP4iMJVYQPqgm39A7ekH4wCKjyBDVE0zgog2Qd6fJzRV:l82Cuy2iVMJV5PPG9AicCXBhJgD2QwBT

    • 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 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

    • 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