General

  • Target

    JaffaCakes118_a9e8533a1c40de9c36691851bb410b12

  • Size

    320KB

  • Sample

    250410-nsmvzszxex

  • MD5

    a9e8533a1c40de9c36691851bb410b12

  • SHA1

    8fdde9ed2927419667fa94bc3575dbc61207a646

  • SHA256

    2d58d67a6ed8f28a9cd9548f5134dae0f5a18d6faadb520715b624216fa0e404

  • SHA512

    f72b1ec86fee1a06597ffc7afe499437fdb3c22484c374ac22f48013455ef7cff9bf90776e394a3c347d02a798fb75bd36d7b069da17ea129230c73b212ff55e

  • SSDEEP

    6144:9TwEo1IV3puaibGKFHi0mofhaH05kipz016580bHFMdkhq86JQPDHDdx/QtqR:NCgvmzFHi0mo5aH0qMzd5807F7qPJQPx

Malware Config

Targets

    • Target

      JaffaCakes118_a9e8533a1c40de9c36691851bb410b12

    • Size

      320KB

    • MD5

      a9e8533a1c40de9c36691851bb410b12

    • SHA1

      8fdde9ed2927419667fa94bc3575dbc61207a646

    • SHA256

      2d58d67a6ed8f28a9cd9548f5134dae0f5a18d6faadb520715b624216fa0e404

    • SHA512

      f72b1ec86fee1a06597ffc7afe499437fdb3c22484c374ac22f48013455ef7cff9bf90776e394a3c347d02a798fb75bd36d7b069da17ea129230c73b212ff55e

    • SSDEEP

      6144:9TwEo1IV3puaibGKFHi0mofhaH05kipz016580bHFMdkhq86JQPDHDdx/QtqR:NCgvmzFHi0mo5aH0qMzd5807F7qPJQPx

    • 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 file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks