General

  • Target

    JaffaCakes118_bb9948c3da8fee376e600f5467021131

  • Size

    320KB

  • Sample

    250417-3fnn3svzbt

  • MD5

    bb9948c3da8fee376e600f5467021131

  • SHA1

    c8fec923c44f9debbce6862b0ce24f6686d6faf5

  • SHA256

    3dfd0e24cf3ccb5898676f46f706ada8a30636bc3383b2406c1cee28aaf319f3

  • SHA512

    0351bd5fa851347900fdbe6050c6ccdb2e23b2bb587213b9d08b296fa060adcb4ea81f224877b42426074a6282fb362ce7db3f8d277462f9118fb5bc9f5b340e

  • SSDEEP

    6144:5Tw4o1IV3puaibGKFHi0mofhaH05kipz016580bHFMWu86JQPDHDdx/QtqR:BmgvmzFHi0mo5aH0qMzd5807FKPJQPDV

Malware Config

Targets

    • Target

      JaffaCakes118_bb9948c3da8fee376e600f5467021131

    • Size

      320KB

    • MD5

      bb9948c3da8fee376e600f5467021131

    • SHA1

      c8fec923c44f9debbce6862b0ce24f6686d6faf5

    • SHA256

      3dfd0e24cf3ccb5898676f46f706ada8a30636bc3383b2406c1cee28aaf319f3

    • SHA512

      0351bd5fa851347900fdbe6050c6ccdb2e23b2bb587213b9d08b296fa060adcb4ea81f224877b42426074a6282fb362ce7db3f8d277462f9118fb5bc9f5b340e

    • SSDEEP

      6144:5Tw4o1IV3puaibGKFHi0mofhaH05kipz016580bHFMWu86JQPDHDdx/QtqR:BmgvmzFHi0mo5aH0qMzd5807FKPJQPDV

    • 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