General

  • Target
    New Text Document (2).txt
  • Size 1KB
  • Sample250501-lntrmavps7
  • SHA256 9f88c5eafa86b8e0f1f89c41525d8b69f668bfea6acfdca59c71dd8f1cbbe40e
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • DeadBird8524-37163.portmap.io:37163

Mutex
  • V7Y4ePkLdGpSTr8x

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

aes.plain

Targets

    • Target
      New Text Document (2).txt
    • Size 1KB
    • SHA256 9f88c5eafa86b8e0f1f89c41525d8b69f668bfea6acfdca59c71dd8f1cbbe40e
    • MD5 SHA1 SHA512
    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Detect Xworm Payload

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • XenArmor Suite

      XenArmor is as suite of password recovery tools for various application.

    • Xenarmor family

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Disables RegEdit via registry modification

    • Downloads MZ/PE file

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks computer location settings

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

    • Drops startup 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 local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • 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 accounts

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • UPX packed file

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

MITRE ATT&CK Enterprise v16

Tasks