General

  • Target

    JaffaCakes118_ab47884d9e2e8eaad031b2021d074b61

  • Size

    652KB

  • Sample

    250410-wpbybayyf1

  • MD5

    ab47884d9e2e8eaad031b2021d074b61

  • SHA1

    576c99efb0cfa3ab5de053cd4618fec6fb6384dc

  • SHA256

    3f58e40fd44fda086235bf1c5a36a2fa8e50c90a229afa3ea18db4209da82347

  • SHA512

    5df186775287d8bfdd1e7a701bd3b58399f6517b0a8e09502ef2a86e0534c0d63c95efd1ecddb053afaa9b837ce31e5afd81732538cd2e4647beaa1d45e5460e

  • SSDEEP

    6144:lj+/wndfF/gl0LQIk8DR3dEuAI7pENxsZozAm9TMdGQLUg1nYmefPImdrionep:t+onxOp8FySpEDzvIdtU+Ymef

Malware Config

Targets

    • Target

      JaffaCakes118_ab47884d9e2e8eaad031b2021d074b61

    • Size

      652KB

    • MD5

      ab47884d9e2e8eaad031b2021d074b61

    • SHA1

      576c99efb0cfa3ab5de053cd4618fec6fb6384dc

    • SHA256

      3f58e40fd44fda086235bf1c5a36a2fa8e50c90a229afa3ea18db4209da82347

    • SHA512

      5df186775287d8bfdd1e7a701bd3b58399f6517b0a8e09502ef2a86e0534c0d63c95efd1ecddb053afaa9b837ce31e5afd81732538cd2e4647beaa1d45e5460e

    • SSDEEP

      6144:lj+/wndfF/gl0LQIk8DR3dEuAI7pENxsZozAm9TMdGQLUg1nYmefPImdrionep:t+onxOp8FySpEDzvIdtU+Ymef

    • 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

    • Blocklisted process makes network request

    • 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