General

  • Target
    2026-08-30_58cc31a8f2c54182147d4a862089c062_asyncrat_cobalt-strike_elex_glassworm_icedid_vidar_xworm
  • Size 231KB
  • Sample260831-m5ff1azgpc
  • SHA256 c4bd1c7bb7eda7d44bfc49d1580cb36ddf862ac7cd123b5ff014915325a42547
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • xworm

Version
  • 3.0

C2
  • 45.88.9.218:3333

Attributes
  • install_file

    Mason.exe

aes.plain

Targets

    • Target
      2026-08-30_58cc31a8f2c54182147d4a862089c062_asyncrat_cobalt-strike_elex_glassworm_icedid_vidar_xworm
    • Size 231KB
    • SHA256 c4bd1c7bb7eda7d44bfc49d1580cb36ddf862ac7cd123b5ff014915325a42547
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detect Xworm Payload

    • Family: Xworm

      Xworm is a remote access trojan written in C#.

    • Detects Windows executables referencing non-Windows User-Agents

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

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

    • Adds Run key to start application

    • Enumerates connected drives

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks