General

  • Target

    JaffaCakes118_a5e2da6e1c01ed5a77388fe8e3cffccd

  • Size

    560KB

  • Sample

    250409-vbqnwaxsfs

  • MD5

    a5e2da6e1c01ed5a77388fe8e3cffccd

  • SHA1

    42af81c936c87dd649c92ca0766269b02639ed23

  • SHA256

    91c53cbeec6bc93467588bd0657b4f5d1bb0658c5c89bc28ad599c8931db80b4

  • SHA512

    a6e8d394ff59e43636e07503053670084d98bcc4973f8570e965d5fbf6097dd0c3d4e9778b8831fae7bc1dd1709ebf526e1b7c4248b1ed3404ec6926544c7137

  • SSDEEP

    12288:jPYBX/tQDwmHtOwu/ctCKaCDnEQvPg5I2R3qV:jPY2w+tOwuMCeEOPp83

Malware Config

Targets

    • Target

      JaffaCakes118_a5e2da6e1c01ed5a77388fe8e3cffccd

    • Size

      560KB

    • MD5

      a5e2da6e1c01ed5a77388fe8e3cffccd

    • SHA1

      42af81c936c87dd649c92ca0766269b02639ed23

    • SHA256

      91c53cbeec6bc93467588bd0657b4f5d1bb0658c5c89bc28ad599c8931db80b4

    • SHA512

      a6e8d394ff59e43636e07503053670084d98bcc4973f8570e965d5fbf6097dd0c3d4e9778b8831fae7bc1dd1709ebf526e1b7c4248b1ed3404ec6926544c7137

    • SSDEEP

      12288:jPYBX/tQDwmHtOwu/ctCKaCDnEQvPg5I2R3qV:jPY2w+tOwuMCeEOPp83

    • 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