General

  • Target

    JaffaCakes118_a086f669930e1c79cb9a4383c0ed2868

  • Size

    320KB

  • Sample

    250407-xr3pgs1rt6

  • MD5

    a086f669930e1c79cb9a4383c0ed2868

  • SHA1

    5f11e9cb2e3d2757c8e4d8394b55f5fc033296a7

  • SHA256

    1a3f33d114b9d1c327289aa5b636217f58863ee81046c8e19f61e6e18d63c760

  • SHA512

    b1d27e6a32701cfc2b2ec1a85e17a2264682cd0390e7a1ac4177337e220660b3b886aaa8568371562cf2e5b974e054d1eee9beebf4255855ad813b5ab8e5be8f

  • SSDEEP

    6144:nTwuo1IV3puaibGKFHi0mofhaH05kipz016580bHFrbC86JQPDHDdx/QtqR:TsgvmzFHi0mo5aH0qMzd5807FrWPJQPx

Malware Config

Targets

    • Target

      JaffaCakes118_a086f669930e1c79cb9a4383c0ed2868

    • Size

      320KB

    • MD5

      a086f669930e1c79cb9a4383c0ed2868

    • SHA1

      5f11e9cb2e3d2757c8e4d8394b55f5fc033296a7

    • SHA256

      1a3f33d114b9d1c327289aa5b636217f58863ee81046c8e19f61e6e18d63c760

    • SHA512

      b1d27e6a32701cfc2b2ec1a85e17a2264682cd0390e7a1ac4177337e220660b3b886aaa8568371562cf2e5b974e054d1eee9beebf4255855ad813b5ab8e5be8f

    • SSDEEP

      6144:nTwuo1IV3puaibGKFHi0mofhaH05kipz016580bHFrbC86JQPDHDdx/QtqR:TsgvmzFHi0mo5aH0qMzd5807FrWPJQPx

    • 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 v15

Tasks