General

  • Target

    nos_setup.exe

  • Size

    27.0MB

  • Sample

    240312-1vc5sabg3t

  • MD5

    d58531ddd40daa8ca1c3569ac1c0c4d3

  • SHA1

    07f4c058658f085d434e78febc2365f0b8f25802

  • SHA256

    5051edf86f5e10baca635c7319b42e0cd2395c1293a9de6b0d45a8236f689207

  • SHA512

    ee8168434b31dc9d3e708f182af33a59f29fdff706a63947ad78331e15e1fa0e10d048c7c93ef5c6edd1186bece840670fafb951ca496128814d7f3761e774c1

  • SSDEEP

    786432:GhvmTZFh0juDs1OQc3KsHuuDH3Y4+I6Iao1:evG4uDs1OT3bHDL3Y4aro1

Malware Config

Targets

    • Target

      nos_setup.exe

    • Size

      27.0MB

    • MD5

      d58531ddd40daa8ca1c3569ac1c0c4d3

    • SHA1

      07f4c058658f085d434e78febc2365f0b8f25802

    • SHA256

      5051edf86f5e10baca635c7319b42e0cd2395c1293a9de6b0d45a8236f689207

    • SHA512

      ee8168434b31dc9d3e708f182af33a59f29fdff706a63947ad78331e15e1fa0e10d048c7c93ef5c6edd1186bece840670fafb951ca496128814d7f3761e774c1

    • SSDEEP

      786432:GhvmTZFh0juDs1OQc3KsHuuDH3Y4+I6Iao1:evG4uDs1OT3bHDL3Y4aro1

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Creates new service(s)

    • Sets service image path in registry

    • ACProtect 1.3x - 1.4x DLL software

      Detects file using ACProtect software.

    • Checks BIOS information in registry

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

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Modifies Windows Firewall

    • Writes to the Master Boot Record (MBR)

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

    • Checks computer location settings

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks