General

  • Target

    JaffaCakes118_8c09682f34406064eed9412de458e907

  • Size

    476KB

  • Sample

    250329-vpbf4szye1

  • MD5

    8c09682f34406064eed9412de458e907

  • SHA1

    4af9e5e945891a2a86abc95f8c49935c0b7d1d10

  • SHA256

    5f272cc5a7816d99e32eadfec8fba293ab2ab9840806501b6f5ca2d041a82b13

  • SHA512

    253120907b2f598204502da641f5da06062a5d0086dddee7b88a7216f26367a28de0c254ec2f3204f53e94a5008b1b4473f36507fc2ab7de389c6af17a99a6de

  • SSDEEP

    6144:hj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrionjf44:R6onxOp8FySpE5zvIdtU+Ymefr

Malware Config

Targets

    • Target

      JaffaCakes118_8c09682f34406064eed9412de458e907

    • Size

      476KB

    • MD5

      8c09682f34406064eed9412de458e907

    • SHA1

      4af9e5e945891a2a86abc95f8c49935c0b7d1d10

    • SHA256

      5f272cc5a7816d99e32eadfec8fba293ab2ab9840806501b6f5ca2d041a82b13

    • SHA512

      253120907b2f598204502da641f5da06062a5d0086dddee7b88a7216f26367a28de0c254ec2f3204f53e94a5008b1b4473f36507fc2ab7de389c6af17a99a6de

    • SSDEEP

      6144:hj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrionjf44:R6onxOp8FySpE5zvIdtU+Ymefr

    • 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

    • Blocklisted process makes network request

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • 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

    • Loads dropped DLL

    • 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 v15

Tasks