General

  • Target

    4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe

  • Size

    713KB

  • Sample

    240522-b1nq2agd5v

  • MD5

    a68f9e8fe3a6b2a073267af477c2bf31

  • SHA1

    96a682c454cfb32ae2928801e89e67b043e47a4e

  • SHA256

    4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5

  • SHA512

    4e283db9f2f7f013b34e37755005f8eea84153d74b3eed513a07fd97ac3bf11c805d4c34ecd68320defe194fde3fb19bd2ff7759659d75dc703bfc51645a60eb

  • SSDEEP

    12288:dU9jA6JPQbRhkYvg86stzDpi4L3HIb66KWlyaiZAuW1md+:AbsPTL3HIb66rsUD

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.avtorska.com.mk
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    avtorska2014@

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5.exe

    • Size

      713KB

    • MD5

      a68f9e8fe3a6b2a073267af477c2bf31

    • SHA1

      96a682c454cfb32ae2928801e89e67b043e47a4e

    • SHA256

      4da3b16ba44f07d99f82116f4a316e47d83862e575a6e4185f504d52e69cc6f5

    • SHA512

      4e283db9f2f7f013b34e37755005f8eea84153d74b3eed513a07fd97ac3bf11c805d4c34ecd68320defe194fde3fb19bd2ff7759659d75dc703bfc51645a60eb

    • SSDEEP

      12288:dU9jA6JPQbRhkYvg86stzDpi4L3HIb66KWlyaiZAuW1md+:AbsPTL3HIb66rsUD

    • 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

    • 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