General

  • Target
    Catálogo de reseñas de productos.lha
  • Size 613KB
  • Sample261027-r1fnesdy5x
  • SHA256 fb541cb0510350ea5319807f7336e6c942bef3b37e62e2f7a3f035104d80a8b9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • vallxx.duckdns.org:4689

Mutex
  • LZBDpGU2NGqFwoUo

Attributes
  • install_file

    USB.exe

aes.plain

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    ftp

  • Host

    ftp://ftp.brightlearning.com.my

  • Port

    21

  • Password

    ,Aept[$)OmwWgF+Y

Targets

    • Target
      Catálogo de reseñas de productos.exe
    • Size 720KB
    • SHA256 bb74d83e3d4f2f4fd4db9202f93d0ebb0ec2ab548889d0a7715d8962f85609bc
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Family: AgentTesla

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

    • Family: WarzoneRat, AveMaria

      WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Downloads MZ/PE file

    • System Binary Proxy Execution: Regsvcs/Regasm

      Abuse Regasm to proxy execution of malicious code.

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v16

Tasks