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General

  • Target

    8f44b390ba295e14b6a18221d7d74acbc1ad2b4440db3380364e9b7964f43670.exe

  • Size

    756KB

  • Sample

    240419-b3m8aada86

  • MD5

    3b35eb02919cc28d6faea03c96519504

  • SHA1

    66588cd5d127e83379de633e178b288fe3fad794

  • SHA256

    8f44b390ba295e14b6a18221d7d74acbc1ad2b4440db3380364e9b7964f43670

  • SHA512

    91a2b15b24c30f09c1860ffb31073e4027bb2f970ae7a4a3674a3e99a49194928d6774fc5d963661dbb33a012e95dd51a88a9be64d6b6f07380339388015b6a0

  • SSDEEP

    12288:hCK/pbMrRwwAFua+bT/gUDSXN057FQdMvMOKI4uko5QLaBKJAWnGtMm8WxTlEA3J:hCiMrgeX5S+5xeMp4xoQaWAWGtMm8WxP

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.torosdental.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    mehmet19201923000

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      8f44b390ba295e14b6a18221d7d74acbc1ad2b4440db3380364e9b7964f43670.exe

    • Size

      756KB

    • MD5

      3b35eb02919cc28d6faea03c96519504

    • SHA1

      66588cd5d127e83379de633e178b288fe3fad794

    • SHA256

      8f44b390ba295e14b6a18221d7d74acbc1ad2b4440db3380364e9b7964f43670

    • SHA512

      91a2b15b24c30f09c1860ffb31073e4027bb2f970ae7a4a3674a3e99a49194928d6774fc5d963661dbb33a012e95dd51a88a9be64d6b6f07380339388015b6a0

    • SSDEEP

      12288:hCK/pbMrRwwAFua+bT/gUDSXN057FQdMvMOKI4uko5QLaBKJAWnGtMm8WxTlEA3J:hCiMrgeX5S+5xeMp4xoQaWAWGtMm8WxP

    • 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

    • 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