General

  • Target
    9e6ea538080236831f6f2a7dd910d816126b056bcd14e53040913c732e69f8ef.xlsx
  • Size 659KB
  • Sample240608-br5cesfa7t
  • SHA256 9e6ea538080236831f6f2a7dd910d816126b056bcd14e53040913c732e69f8ef
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      9e6ea538080236831f6f2a7dd910d816126b056bcd14e53040913c732e69f8ef.xlsx
    • Size 659KB
    • SHA256 9e6ea538080236831f6f2a7dd910d816126b056bcd14e53040913c732e69f8ef
    • MD5 SHA1 SHA512 SSDEEP
    • 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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks