General

  • Target

    PI_230524.doc

  • Size

    675KB

  • Sample

    240907-s4rerstame

  • MD5

    e95d774d12e3ffc8cebcbf895e174f7f

  • SHA1

    1bb43bc659153b1486c81441cb6b852fea2f73f5

  • SHA256

    6f9c338998bd331f4d59661d3a68c80f21934e35332996d8a194c61552e5da45

  • SHA512

    b4e2d2bf428d7a6e922f6b8990378071903f899fa9cc554b7daab338d57c021397d016a38a469d7f59dce26e764af514849876e454bef9d50fe8b6292c6ceb97

  • SSDEEP

    6144:FwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAR:v

Malware Config

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      PI_230524.doc

    • Size

      675KB

    • MD5

      e95d774d12e3ffc8cebcbf895e174f7f

    • SHA1

      1bb43bc659153b1486c81441cb6b852fea2f73f5

    • SHA256

      6f9c338998bd331f4d59661d3a68c80f21934e35332996d8a194c61552e5da45

    • SHA512

      b4e2d2bf428d7a6e922f6b8990378071903f899fa9cc554b7daab338d57c021397d016a38a469d7f59dce26e764af514849876e454bef9d50fe8b6292c6ceb97

    • SSDEEP

      6144:FwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAR:v

    • AgentTesla

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks