General

  • Target

    1.doc

  • Size

    360KB

  • Sample

    240513-jnh9saga94

  • MD5

    f308e2fa49fd90f10dabcfc866e78dfe

  • SHA1

    a22d05e420652e02fa7c4d9d90c8b8bc916504c8

  • SHA256

    c7eef6c08be60d177f4a8f9e2e74dd2f6b429ea059fa4a0d25a245de7d3e22d8

  • SHA512

    3694c134d3319da96ede2b04d18f5b0b26e7477891e21aaf2fb54718bea7139710623bceb2bad760ba6b405008f70b6cf3b2d2b4a471f575307a9b416fb47354

  • SSDEEP

    6144:RwAYwAYwAYwAYwAYwAYwAYwAYwAYwAZzhRNkkO:v

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      1.doc

    • Size

      360KB

    • MD5

      f308e2fa49fd90f10dabcfc866e78dfe

    • SHA1

      a22d05e420652e02fa7c4d9d90c8b8bc916504c8

    • SHA256

      c7eef6c08be60d177f4a8f9e2e74dd2f6b429ea059fa4a0d25a245de7d3e22d8

    • SHA512

      3694c134d3319da96ede2b04d18f5b0b26e7477891e21aaf2fb54718bea7139710623bceb2bad760ba6b405008f70b6cf3b2d2b4a471f575307a9b416fb47354

    • SSDEEP

      6144:RwAYwAYwAYwAYwAYwAYwAYwAYwAYwAZzhRNkkO:v

    • AgentTesla

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

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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