General

  • Target

    JaffaCakes118_e350cd47d2d19dadb7d9e8c6664eb52f

  • Size

    600KB

  • Sample

    250502-y66v5atwgt

  • MD5

    e350cd47d2d19dadb7d9e8c6664eb52f

  • SHA1

    e8e427eadbca4b8e67261f309f66d0375e974342

  • SHA256

    4ed63683b39113714bdfdd5901c0b624c175479d0383bd89b14d690b55304951

  • SHA512

    c278074d476d27cf5523632d89da668baef508474a042c54e1fbc37d1604b2db39d5fd29f71092d8b781b216482f1552eb69c36fd585d35f3e4bd6015ecad0bd

  • SSDEEP

    6144:Ij6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrion:66onxOp8FySpE5zvIdtU+Ymef

Malware Config

Targets

    • Target

      JaffaCakes118_e350cd47d2d19dadb7d9e8c6664eb52f

    • Size

      600KB

    • MD5

      e350cd47d2d19dadb7d9e8c6664eb52f

    • SHA1

      e8e427eadbca4b8e67261f309f66d0375e974342

    • SHA256

      4ed63683b39113714bdfdd5901c0b624c175479d0383bd89b14d690b55304951

    • SHA512

      c278074d476d27cf5523632d89da668baef508474a042c54e1fbc37d1604b2db39d5fd29f71092d8b781b216482f1552eb69c36fd585d35f3e4bd6015ecad0bd

    • SSDEEP

      6144:Ij6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrion:66onxOp8FySpE5zvIdtU+Ymef

    • Modifies WinLogon for persistence

    • Pykspa

      Pykspa is a worm spreads via Skype uses DGA and it's written in C++.

    • Pykspa family

    • Detect Pykspa worm

    • Adds policy Run key to start application

    • Disables RegEdit via registry modification

    • Checks computer location settings

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

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Hijack Execution Flow: Executable Installer File Permissions Weakness

      Possible Turn off User Account Control's privilege elevation for standard users.

    • Looks up external IP address via web service

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

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks