General

  • Target

    Thalesnano.rar

  • Size

    323KB

  • Sample

    210417-aeyc5p5812

  • MD5

    c3032fdec3fde792dcf5d177513f1aca

  • SHA1

    76fae8f8a770846b89788071ac8a1bba02a5ce6d

  • SHA256

    f4c30cea341ea1eb32c15d19cc1c1f4831d4055f3c6c83adcc6995f34971e491

  • SHA512

    d6ea20f2baaa4a6e51abe1c6cc241179d5893c937807d5415f0d7041aecfb851ac924d564a84e9ba78af90f2a0f6e9eaeb05537d4ee9284ecc64330de5227160

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yueqnugroup.com
  • Port:
    587
  • Username:
    youngboss@yueqnugroup.com
  • Password:
    YOVxieJ1

Targets

    • Target

      Thalesnano.exe

    • Size

      514KB

    • MD5

      1ea4ac3f4abd23addae2f9288ff85dae

    • SHA1

      309d52a22394e5909cfba8672f5e51bacab3dddc

    • SHA256

      f3e4ddd5ea3076ca9b58c75b6fdc3e8f2379ee8f57614dda817f86bfaf9bdebf

    • SHA512

      a6b1d577db41b7109a5566ebd8a0e3d8c8ade484c7e42d7c471a66050101b14fc8fc5a947ba1731481960fb74f0c6157a39080377e7da2f31ec69f7946d3fdb2

    • AgentTesla

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

    • AgentTesla Payload

    • Executes dropped EXE

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Tasks