Analysis

  • max time kernel
    161s
  • max time network
    176s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/10/2022, 20:25

General

  • Target
    f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe
  • Size 488KB
  • Sample221012-y7hvpabcbm
  • SHA256 f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detect Neshta payload 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe
    "C:\Users\Admin\AppData\Local\Temp\f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\3582-490\f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3392
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3392 -s 1828
        3⤵
        • Program crash
        PID:3700
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3392 -ip 3392
    1⤵
      PID:3316

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          msedge.exe

          • Path C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          • Size 3.2MB
          • SHA256 2b3aa9642b291932ba7f9f3d85221402a9d27078f56ef0e9c6bca633616e3873
          • MD5 SHA1 SHA512 SSDEEP

          f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe

          • Path C:\Users\Admin\AppData\Local\Temp\3582-490\f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe
          • Size 448KB
          • SHA256 388092169b96794dec2d6a0bcff4c60dfad79fdf5d49282cfe7bf6a6b59d75c0
          • MD5 SHA1 SHA512 SSDEEP

          f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe

          • Path C:\Users\Admin\AppData\Local\Temp\3582-490\f78477275d79d0eead0b62d3355df9be273518c54eeac3719a97823365cee858.exe
          • Size 448KB
          • SHA256 388092169b96794dec2d6a0bcff4c60dfad79fdf5d49282cfe7bf6a6b59d75c0
          • MD5 SHA1 SHA512 SSDEEP

          memory/3392-142-0x0000000004C80000-0x0000000004C92000-memory.dmp

          memory/3392-144-0x00000000059C0000-0x00000000059FC000-memory.dmp

          memory/3392-137-0x0000000000400000-0x0000000000475000-memory.dmp

          memory/3392-138-0x000000000063E000-0x0000000000675000-memory.dmp

          memory/3392-139-0x0000000000820000-0x0000000000879000-memory.dmp

          memory/3392-140-0x0000000004DF0000-0x0000000005394000-memory.dmp

          memory/3392-141-0x00000000053A0000-0x00000000059B8000-memory.dmp

          memory/3392-143-0x0000000004CA0000-0x0000000004DAA000-memory.dmp

          memory/3392-136-0x0000000000820000-0x0000000000879000-memory.dmp

          memory/3392-145-0x0000000005CB0000-0x0000000005D16000-memory.dmp

          memory/3392-146-0x00000000064B0000-0x0000000006542000-memory.dmp

          memory/3392-147-0x0000000006560000-0x00000000065D6000-memory.dmp

          memory/3392-148-0x0000000006620000-0x000000000663E000-memory.dmp

          memory/3392-149-0x00000000066C0000-0x0000000006710000-memory.dmp

          memory/3392-150-0x0000000006750000-0x0000000006912000-memory.dmp

          memory/3392-151-0x0000000006920000-0x0000000006E4C000-memory.dmp

          memory/3392-135-0x000000000063E000-0x0000000000675000-memory.dmp

          memory/3392-153-0x000000000063E000-0x0000000000675000-memory.dmp

          memory/3392-154-0x0000000000400000-0x0000000000475000-memory.dmp