General

  • Target

    JaffaCakes118_8970327ee75efc6d291e9fa94473fa4e

  • Size

    556KB

  • Sample

    250327-c614zsyls4

  • MD5

    8970327ee75efc6d291e9fa94473fa4e

  • SHA1

    dce4a0d459b277c8ecf8edd903910ea4bac15769

  • SHA256

    439ce0019a7fb62b9832175f3504fad7aaa7c9d1b3cc765da31316dbfcb45168

  • SHA512

    6d29535c57788756521fc0a65d7b354e6e18968454f7b8f7171813207b3dba743f67d53f33f98c790986951126e8e13174664ab9bd67bdcdf2104b399e25eb1f

  • SSDEEP

    6144:Sj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrionr:A6onxOp8FySpE5zvIdtU+Ymef

Malware Config

Targets

    • Target

      JaffaCakes118_8970327ee75efc6d291e9fa94473fa4e

    • Size

      556KB

    • MD5

      8970327ee75efc6d291e9fa94473fa4e

    • SHA1

      dce4a0d459b277c8ecf8edd903910ea4bac15769

    • SHA256

      439ce0019a7fb62b9832175f3504fad7aaa7c9d1b3cc765da31316dbfcb45168

    • SHA512

      6d29535c57788756521fc0a65d7b354e6e18968454f7b8f7171813207b3dba743f67d53f33f98c790986951126e8e13174664ab9bd67bdcdf2104b399e25eb1f

    • SSDEEP

      6144:Sj6/wndfF/gl0LQIk8DR3dEuAI7pEfxsZozAm9TMdGQLUg1nYmefPImdrionr:A6onxOp8FySpE5zvIdtU+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

    • 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

    • Loads dropped DLL

    • 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 v15

Tasks