General

  • Target

    NohBoard.exe

  • Size

    834KB

  • Sample

    240428-s9554sbb65

  • MD5

    b7b5bf53f5394400acdc6f3c04130227

  • SHA1

    606be1bfdc944732e2f31f555180e7adc86db301

  • SHA256

    8df2babaa8c93c6012f7474a019854c1ac6cdada88a4a4e9c5a8c6e593efe70d

  • SHA512

    9d1d8cbf4c7af84b70b45d071d049fb01a9fbaf21f2b3d7915e90dc8097f03933d89c1fb5a5595894efb1345a9993dd4b413df605de887ee3a80c2c4cc488472

  • SSDEEP

    6144:3bUk4w/ECvdaOrjUbqDXsIv1YAydSSq+xp+OJYuelZFel6:rUG/EC7HUbdI90o9j

Malware Config

Targets

    • Target

      NohBoard.exe

    • Size

      834KB

    • MD5

      b7b5bf53f5394400acdc6f3c04130227

    • SHA1

      606be1bfdc944732e2f31f555180e7adc86db301

    • SHA256

      8df2babaa8c93c6012f7474a019854c1ac6cdada88a4a4e9c5a8c6e593efe70d

    • SHA512

      9d1d8cbf4c7af84b70b45d071d049fb01a9fbaf21f2b3d7915e90dc8097f03933d89c1fb5a5595894efb1345a9993dd4b413df605de887ee3a80c2c4cc488472

    • SSDEEP

      6144:3bUk4w/ECvdaOrjUbqDXsIv1YAydSSq+xp+OJYuelZFel6:rUG/EC7HUbdI90o9j

    • 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