General

  • Target

    004f4328d00773bd48589783099da8e3aaad49555a32070a8049da03fd282e4c.zip

  • Size

    681KB

  • Sample

    240604-bcsp3sgd34

  • MD5

    a56a1ef8438bb5b231ea4c5cfb28697f

  • SHA1

    2dd593078fdb8b2a54b92ca3da71773d2d12fccc

  • SHA256

    004f4328d00773bd48589783099da8e3aaad49555a32070a8049da03fd282e4c

  • SHA512

    a587651985b645c8b55ac7ea2f1bd5fd261fea809d3189354ea100b1ed37493e5f825349f2aa719b1812387ae936a762931256887b7f72520a446dea9d92b59a

  • SSDEEP

    12288:ape0FTFkQGtAdgfyX1WsQpc1U233VrgFoaYsMRAq+cH4U9uPuEuy+wASXc+9ZuKV:mVFkGdgsWeb3ln/RjNT4PuTdwBs+rPwQ

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.mapsenzymes.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Andx4@HE73!n

Targets

    • Target

      Invoice to JH-202304180001.exe

    • Size

      1022KB

    • MD5

      9c37c66c98472fa368e39fefbef31906

    • SHA1

      ca669cb8ad948f50ed48c94e573a777f2675674f

    • SHA256

      7e9ace80bb54631d6c392281fe75cf4e1b171aebbcc863b7e72054931bde64c8

    • SHA512

      adcf9220492402846db88a846ec0a22cbf48b26802ef32a04ca15b86b2a639de9bc6ef9e06bdd1eaca734e33322a0d1423088b5d18f90aed878edef8009d5993

    • SSDEEP

      12288:KMYeaky/Qa0KP1x+kPwu9JXsYGKt/rFfaeX1osP6VAWhc1U233Vtm8Lm3qipIPxg:KMYeuN5iooZVAFb3lNCD6FzCBs+VES

    • 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

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks