General

  • Target
    Output.exe
  • Size 237KB
  • Sample240610-1vnarasckf
  • SHA256 c7b6a483a1b5ee83e9a76b15db612c59812fce4f795f7556eaf7cf50087d3125
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xworm

Version
  • 3.1

Attributes
  • install_file

    USB.exe

Targets

    • Target
      Output.exe
    • Size 237KB
    • SHA256 c7b6a483a1b5ee83e9a76b15db612c59812fce4f795f7556eaf7cf50087d3125
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Xworm Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Sets service image path in registry

    • 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.

    • Executes dropped EXE

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks