General

  • Target

    RoWare.exe

  • Size

    472KB

  • Sample

    240903-tqjy7s1brk

  • MD5

    b63bed7f19631126a453b49d603c74a4

  • SHA1

    abd90b6cbda580c135e1b28b89d4f0027f939225

  • SHA256

    2367f924d3eeb65eac13f2fef2c92ae901605323ae0e3c91b24a8c0717c1829a

  • SHA512

    29aa82c4c201512b4ebacc3ea1725bdb8207fe56ae68c7b7620da9b619b8cf1801fa5488f47863d46c056066eb559a3c0c887c46fd816890c9e9d4a2a32f192d

  • SSDEEP

    12288:Qy90sdnp4C4BytE9WlGKfmQgNsP/N6aSg5U2D:Qy1dpF44osGKfmQEwOg5h

Malware Config

Extracted

Family

xworm

C2

91.92.250.4:2709

Attributes
  • install_file

    USB.exe

Targets

    • Target

      RoWare.exe

    • Size

      472KB

    • MD5

      b63bed7f19631126a453b49d603c74a4

    • SHA1

      abd90b6cbda580c135e1b28b89d4f0027f939225

    • SHA256

      2367f924d3eeb65eac13f2fef2c92ae901605323ae0e3c91b24a8c0717c1829a

    • SHA512

      29aa82c4c201512b4ebacc3ea1725bdb8207fe56ae68c7b7620da9b619b8cf1801fa5488f47863d46c056066eb559a3c0c887c46fd816890c9e9d4a2a32f192d

    • SSDEEP

      12288:Qy90sdnp4C4BytE9WlGKfmQgNsP/N6aSg5U2D:Qy1dpF44osGKfmQEwOg5h

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Blocklisted process makes network request

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Loads dropped DLL

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks