General

  • Target
    MIC Taiwan RFQ.doc
  • Size 1.7MB
  • Sample201124-8dmm3cm8en
  • SHA256 ede0c266836e85d1ac3bc623377fda09bb0135a9746a0ecde6d7c52c7eddfc24
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.lettu.us

  • Port

    587

  • Password

    anyanwu5050

Targets

    • Target
      MIC Taiwan RFQ.doc
    • Size 1.7MB
    • SHA256 ede0c266836e85d1ac3bc623377fda09bb0135a9746a0ecde6d7c52c7eddfc24
    • MD5 SHA1 SHA512
    • AgentTesla

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

    • AgentTesla Payload

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • 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 v6

Tasks