General

  • Target

    JaffaCakes118_bad3aa8bfd42552d828c35c8202f43f6

  • Size

    596KB

  • Sample

    250417-x5ql3s1rz4

  • MD5

    bad3aa8bfd42552d828c35c8202f43f6

  • SHA1

    8e4baedd28bfa1b0cad3643a3dee24449a0a1df9

  • SHA256

    395f67fccccbea1c99cb243f2ff7994bfc211a19b3e3b583be219265b060d828

  • SHA512

    ec58caa9b81e0f590f38b2592fab525b2f1efd3ab7fe89009dfc6bf8cf35c713d487f2ae9038175545261e3071901ec82699e302b07159de0543727c8a430421

  • SSDEEP

    6144:1IXsL0tvrSVz1DnemeYbpsnEf78AoXh6KkiD0OofzA+/VygHUBoIgw4aRpgv6:1IXsgtvm1De5YlOx6lzBH46UBoFS

Malware Config

Targets

    • Target

      JaffaCakes118_bad3aa8bfd42552d828c35c8202f43f6

    • Size

      596KB

    • MD5

      bad3aa8bfd42552d828c35c8202f43f6

    • SHA1

      8e4baedd28bfa1b0cad3643a3dee24449a0a1df9

    • SHA256

      395f67fccccbea1c99cb243f2ff7994bfc211a19b3e3b583be219265b060d828

    • SHA512

      ec58caa9b81e0f590f38b2592fab525b2f1efd3ab7fe89009dfc6bf8cf35c713d487f2ae9038175545261e3071901ec82699e302b07159de0543727c8a430421

    • SSDEEP

      6144:1IXsL0tvrSVz1DnemeYbpsnEf78AoXh6KkiD0OofzA+/VygHUBoIgw4aRpgv6:1IXsgtvm1De5YlOx6lzBH46UBoFS

    • 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