General

  • Target

    434cac1c8f9dfcc8e719c15a4cbe3462ab6066931f3b4598c79428d2a3e079bb.exe

  • Size

    566KB

  • Sample

    240228-t4jwcsge4t

  • MD5

    b43dfe0d4445035a96b536e3fc49320e

  • SHA1

    53fb6e459753548d52ec113682d88c63bc00e205

  • SHA256

    434cac1c8f9dfcc8e719c15a4cbe3462ab6066931f3b4598c79428d2a3e079bb

  • SHA512

    91dd1ff23a973c8b42f1c5ba98146702fa5aa353275b1d7b8fa70aa2ec20a4ca0ea4bda3616db111e889901bc49ba756078e44decfd2c06c35873b02e65772ff

  • SSDEEP

    12288:IGzEt2rFx8xbm5bLSX/NyBnyxxh7OeLpcxL:IGzX8xbibGXVyBnEfpcxL

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.myhydropowered.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nW5AoStmqtxtXpA

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      434cac1c8f9dfcc8e719c15a4cbe3462ab6066931f3b4598c79428d2a3e079bb.exe

    • Size

      566KB

    • MD5

      b43dfe0d4445035a96b536e3fc49320e

    • SHA1

      53fb6e459753548d52ec113682d88c63bc00e205

    • SHA256

      434cac1c8f9dfcc8e719c15a4cbe3462ab6066931f3b4598c79428d2a3e079bb

    • SHA512

      91dd1ff23a973c8b42f1c5ba98146702fa5aa353275b1d7b8fa70aa2ec20a4ca0ea4bda3616db111e889901bc49ba756078e44decfd2c06c35873b02e65772ff

    • SSDEEP

      12288:IGzEt2rFx8xbm5bLSX/NyBnyxxh7OeLpcxL:IGzX8xbibGXVyBnEfpcxL

    • 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 binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

    • 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

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • Target

      $PLUGINSDIR/System.dll

    • Size

      12KB

    • MD5

      4add245d4ba34b04f213409bfe504c07

    • SHA1

      ef756d6581d70e87d58cc4982e3f4d18e0ea5b09

    • SHA256

      9111099efe9d5c9b391dc132b2faf0a3851a760d4106d5368e30ac744eb42706

    • SHA512

      1bd260cabe5ea3cefbbc675162f30092ab157893510f45a1b571489e03ebb2903c55f64f89812754d3fe03c8f10012b8078d1261a7e73ac1f87c82f714bce03d

    • SSDEEP

      192:VjHcQ0qWTlt7wi5Aj/lM0sEWD/wtYbBjpNQybC7y+XZv0QPi:B/Qlt7wiij/lMRv/9V4bvr

    Score
    3/10

MITRE ATT&CK Enterprise v15

Tasks