General

  • Target

    JaffaCakes118_b4a229565b18ddf6e26668fa71c1f260

  • Size

    556KB

  • Sample

    250413-pgcrbavqy8

  • MD5

    b4a229565b18ddf6e26668fa71c1f260

  • SHA1

    2307c3afc80bec3823f5774322faf82518702d04

  • SHA256

    2dd546c14f099e9bb4743023030628c46e25af589292816d7666c17ab7f17bd6

  • SHA512

    2a7f67798e04b983728cda41060a0424e9eb64d9102299bd58199e9d280d33977a737ed791d819d966973d7ccb145c549f0e3e573b377544ed1a81c9ebc324bc

  • SSDEEP

    12288:m6bvdl0zCB8EDItMTzwg7lMQsvNuqZBRbZEYTwdD7IjLgxX+pd167QhEXfG:/vdezCByqTtlMQsFuqzRbzI7IoE6EhcG

Malware Config

Targets

    • Target

      JaffaCakes118_b4a229565b18ddf6e26668fa71c1f260

    • Size

      556KB

    • MD5

      b4a229565b18ddf6e26668fa71c1f260

    • SHA1

      2307c3afc80bec3823f5774322faf82518702d04

    • SHA256

      2dd546c14f099e9bb4743023030628c46e25af589292816d7666c17ab7f17bd6

    • SHA512

      2a7f67798e04b983728cda41060a0424e9eb64d9102299bd58199e9d280d33977a737ed791d819d966973d7ccb145c549f0e3e573b377544ed1a81c9ebc324bc

    • SSDEEP

      12288:m6bvdl0zCB8EDItMTzwg7lMQsvNuqZBRbZEYTwdD7IjLgxX+pd167QhEXfG:/vdezCByqTtlMQsFuqzRbzI7IoE6EhcG

    • 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