General

  • Target
    zzzz.rar
  • Size 15KB
  • Sample260925-zzrnashf63
  • SHA256 19a271adc757865215ac651612ffc2f2a036d231a0d95a5ba03105c5d06794b2
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 5.0

C2
  • 36.tcp.cpolar.top:14300

Mutex
  • xsZvBoWPFk9OfUqg

Attributes
  • install_file

    USB.exe

aes.plain

Targets

    • Target
      zzzz.exe
    • Size 32KB
    • SHA256 ab3ee33342d9f4d35d69af94a9759f2031ba04aef4bea4a40ce5172f32d9fc81
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • 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

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Boot or Logon Autostart Execution: Active Setup

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

    • Disables Task Manager via registry modification

    • 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

    • Modifies system executable filetype association

    • Enumerates connected drives

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

MITRE ATT&CK Enterprise v16

Tasks