General

  • Target

    JaffaCakes118_d5b6da842a50c57aeb8d8e550dd6091f

  • Size

    568KB

  • Sample

    250424-klcvnavsdw

  • MD5

    d5b6da842a50c57aeb8d8e550dd6091f

  • SHA1

    29c7ffbec53d2b3c87459170a377909c7f964bdb

  • SHA256

    4a35242eadc3539545837906ee8bcbec6fb4bd1ce5f07c8bc8478cf415d53bb3

  • SHA512

    ac6a88d6effaf2d9046879a9df3358d264de024c739c7087c11044629bb245cc65d8708c25c6445f0931aae57c3157d2af94bb31cf9201bdeacfb581d178230a

  • SSDEEP

    12288:X8KkqnHkapLvSrhlUy1WY6X+pd167QhEXns:XOqnHZpLartWzE6EhD

Malware Config

Targets

    • Target

      JaffaCakes118_d5b6da842a50c57aeb8d8e550dd6091f

    • Size

      568KB

    • MD5

      d5b6da842a50c57aeb8d8e550dd6091f

    • SHA1

      29c7ffbec53d2b3c87459170a377909c7f964bdb

    • SHA256

      4a35242eadc3539545837906ee8bcbec6fb4bd1ce5f07c8bc8478cf415d53bb3

    • SHA512

      ac6a88d6effaf2d9046879a9df3358d264de024c739c7087c11044629bb245cc65d8708c25c6445f0931aae57c3157d2af94bb31cf9201bdeacfb581d178230a

    • SSDEEP

      12288:X8KkqnHkapLvSrhlUy1WY6X+pd167QhEXns:XOqnHZpLartWzE6EhD

    • 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