General

  • Target
    NohBoard.exe
  • Size 834KB
  • Sample240428-s9554sbb65
  • SHA256 8df2babaa8c93c6012f7474a019854c1ac6cdada88a4a4e9c5a8c6e593efe70d
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      NohBoard.exe
    • Size 834KB
    • SHA256 8df2babaa8c93c6012f7474a019854c1ac6cdada88a4a4e9c5a8c6e593efe70d
    • MD5 SHA1 SHA512 SSDEEP
    • Downloads MZ/PE file

    • Modifies Installed Components in the registry

    • Sets file execution options in registry

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Checks system information in the registry

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

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks