General

  • Target

    conn.exe

  • Size

    28.2MB

  • Sample

    250302-nt3b3atvax

  • MD5

    b5a2749b7ad6f8e070c1ad2761f99232

  • SHA1

    a7a50a9cdb6dc603d38f7642849264b7d6cb78f8

  • SHA256

    e58993fa804654f6560f73f8a4cdd77fc0bf1057c1929ea11227fbf7aa3721c4

  • SHA512

    f577a1e6a59518bcf1afd502ef712cf6ab8a1c522e94662b2edac7edfffca25468fb862aa754a75b131f5e2df517798ae5e05125b68384ddd855d6a2d5796176

  • SSDEEP

    786432:8tu0coshxWHVn6s6b64G71jaoCo1Ha2XreZd9nmF92:iu0jyC6Fb6V71JCo1RkdFs

Malware Config

Extracted

Family

xworm

Version

5.0

C2

thetest.selfhost.co:1339

Mutex

hyd6qZsPPsPPgljc

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    DirectOutputService.exe

aes.plain

Targets

    • Target

      conn.exe

    • Size

      28.2MB

    • MD5

      b5a2749b7ad6f8e070c1ad2761f99232

    • SHA1

      a7a50a9cdb6dc603d38f7642849264b7d6cb78f8

    • SHA256

      e58993fa804654f6560f73f8a4cdd77fc0bf1057c1929ea11227fbf7aa3721c4

    • SHA512

      f577a1e6a59518bcf1afd502ef712cf6ab8a1c522e94662b2edac7edfffca25468fb862aa754a75b131f5e2df517798ae5e05125b68384ddd855d6a2d5796176

    • SSDEEP

      786432:8tu0coshxWHVn6s6b64G71jaoCo1Ha2XreZd9nmF92:iu0jyC6Fb6V71JCo1RkdFs

    • 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

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Xworm family

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

MITRE ATT&CK Enterprise v15

Tasks