General

  • Target

    JaffaCakes118_e5c3120002b37508bf5818575602b6fd

  • Size

    1016KB

  • Sample

    250503-vrprhsw1dt

  • MD5

    e5c3120002b37508bf5818575602b6fd

  • SHA1

    608188e4c230fe43887ae5bd9239ebbd21d54b5d

  • SHA256

    cd535e113c082c1341000387beea5b44386db9c6872e4ad3e432bbe18b9c2c75

  • SHA512

    e6218c70045131db7eb7b026eb197d4115572e50db9768397842d26c0d634d59b52863e759fbcca726be4c4073243d01fc2984ebd29c4291ee3f9fe9a683e6ee

  • SSDEEP

    6144:FIXsL0tvrSVz1DnemeYbpsnEf78AoXh6KkiD0OofzA+/VygHU:FIXsgtvm1De5YlOx6lzBH46U

Malware Config

Targets

    • Target

      JaffaCakes118_e5c3120002b37508bf5818575602b6fd

    • Size

      1016KB

    • MD5

      e5c3120002b37508bf5818575602b6fd

    • SHA1

      608188e4c230fe43887ae5bd9239ebbd21d54b5d

    • SHA256

      cd535e113c082c1341000387beea5b44386db9c6872e4ad3e432bbe18b9c2c75

    • SHA512

      e6218c70045131db7eb7b026eb197d4115572e50db9768397842d26c0d634d59b52863e759fbcca726be4c4073243d01fc2984ebd29c4291ee3f9fe9a683e6ee

    • SSDEEP

      6144:FIXsL0tvrSVz1DnemeYbpsnEf78AoXh6KkiD0OofzA+/VygHU:FIXsgtvm1De5YlOx6lzBH46U

    • 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