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General

  • Target

    301ed1bb47c406723e68efa053bb4d4f5ce8fa794676c4411b0d2b506696d228.exe

  • Size

    40KB

  • Sample

    240312-ct2jzsde2v

  • MD5

    37e8da7ff8487da599c89c8a2b3b7d96

  • SHA1

    144d2581c8bbc52c50b8e7a0d2cb84bb7e0c7c0f

  • SHA256

    301ed1bb47c406723e68efa053bb4d4f5ce8fa794676c4411b0d2b506696d228

  • SHA512

    1b861b54217f66d82784d920abdc8710944f2a223a788c16f7228102a781e54a5e881333caef32f18c63d3377c782afbb48f37f921f1cba2f9b91bab7e8e3af8

  • SSDEEP

    768:lqWEIJXt+ONNXyiRP0zlu5GIGVlW3qWDnrvBF0jrYdZt:lvEmt+ONNXycP0zlu5GIGVl4qWDnrvTN

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      301ed1bb47c406723e68efa053bb4d4f5ce8fa794676c4411b0d2b506696d228.exe

    • Size

      40KB

    • MD5

      37e8da7ff8487da599c89c8a2b3b7d96

    • SHA1

      144d2581c8bbc52c50b8e7a0d2cb84bb7e0c7c0f

    • SHA256

      301ed1bb47c406723e68efa053bb4d4f5ce8fa794676c4411b0d2b506696d228

    • SHA512

      1b861b54217f66d82784d920abdc8710944f2a223a788c16f7228102a781e54a5e881333caef32f18c63d3377c782afbb48f37f921f1cba2f9b91bab7e8e3af8

    • SSDEEP

      768:lqWEIJXt+ONNXyiRP0zlu5GIGVlW3qWDnrvBF0jrYdZt:lvEmt+ONNXycP0zlu5GIGVl4qWDnrvTN

    • AgentTesla

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

    • Contacts a large (4250) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Detect packed .NET executables. Mostly AgentTeslaV4.

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables packed with or use KoiVM

    • 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

    • 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.

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • 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