General

  • Target
    Virus NahSmi.exe
  • Size 1.3MB
  • Sample260709-ebmn8act7k
  • SHA256 ae837e22582519086fa5634dc351ee0cf76df56b726dc2da507c9902c9baeaaa
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      Virus NahSmi.exe
    • Size 1.3MB
    • SHA256 ae837e22582519086fa5634dc351ee0cf76df56b726dc2da507c9902c9baeaaa
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Looks for VirtualBox Guest Additions in registry

    • Looks for VMWare Tools registry key

    • 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

    • Loads dropped DLL

    • Maps connected drives based on registry

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

    • Writes to the Master Boot Record (MBR)

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

MITRE ATT&CK Enterprise v16

Tasks