General

  • Target

    Payment Slip.exe

  • Size

    686KB

  • Sample

    210723-dtrdxjbgwa

  • MD5

    a6d092527c868bca9de40fc0d6d8032f

  • SHA1

    e8389965e4d3c5eb3fcdeeb3c2e8325216e4d392

  • SHA256

    d59601df51dd905fccccac81f6750b512dccd7c7d3cf6001c3f073a58c1905c4

  • SHA512

    9e706d49d81651e02e4ce85f9ba7f80f91193c858841e067ff88856e10d5d6bbf43a97242fc54d7f793578fcd5fd2b030c86ecfc711d0b5f1f39b80e5b42e5e7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    SMTP.mail.com
  • Port:
    587
  • Username:
    rita-adfixtures@asia.com
  • Password:
    Sunriseadaoma2020

Targets

    • Target

      Payment Slip.exe

    • Size

      686KB

    • MD5

      a6d092527c868bca9de40fc0d6d8032f

    • SHA1

      e8389965e4d3c5eb3fcdeeb3c2e8325216e4d392

    • SHA256

      d59601df51dd905fccccac81f6750b512dccd7c7d3cf6001c3f073a58c1905c4

    • SHA512

      9e706d49d81651e02e4ce85f9ba7f80f91193c858841e067ff88856e10d5d6bbf43a97242fc54d7f793578fcd5fd2b030c86ecfc711d0b5f1f39b80e5b42e5e7

    • 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.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Tasks