General

  • Target

    4df8137744b852e25c6864097f8fa0aaceb424abfd5ea5e74d876ba3347e7508.exe

  • Size

    689KB

  • Sample

    240904-by1b2stemb

  • MD5

    6a161ccccb65f9df1da9db2e30407ba6

  • SHA1

    4006dd425ccaab9319ef16f7df77956b518835bb

  • SHA256

    4df8137744b852e25c6864097f8fa0aaceb424abfd5ea5e74d876ba3347e7508

  • SHA512

    928db8496ca2a0e4b36f6faef53ee9703cf63ee4ba3c10ac1a32634b8075936fe5802c26aaeb302e66f559cc9c6a8fb5ebd76ba5011ee1a2ea580d557d3810a6

  • SSDEEP

    12288:SzjLf30WH03GqQPiwsj7L8pyZvAZqGiZf9Uigfdoq0ZYaFtMpLDtGq3:sjj0yRownp4YZ34uLfH0ZOd5Gq

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

      4df8137744b852e25c6864097f8fa0aaceb424abfd5ea5e74d876ba3347e7508.exe

    • Size

      689KB

    • MD5

      6a161ccccb65f9df1da9db2e30407ba6

    • SHA1

      4006dd425ccaab9319ef16f7df77956b518835bb

    • SHA256

      4df8137744b852e25c6864097f8fa0aaceb424abfd5ea5e74d876ba3347e7508

    • SHA512

      928db8496ca2a0e4b36f6faef53ee9703cf63ee4ba3c10ac1a32634b8075936fe5802c26aaeb302e66f559cc9c6a8fb5ebd76ba5011ee1a2ea580d557d3810a6

    • SSDEEP

      12288:SzjLf30WH03GqQPiwsj7L8pyZvAZqGiZf9Uigfdoq0ZYaFtMpLDtGq3:sjj0yRownp4YZ34uLfH0ZOd5Gq

    • 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