General

  • Target

    JaffaCakes118_a8ed55bc83247a2c8c3273b6781f857d

  • Size

    564KB

  • Sample

    250410-htj8latps8

  • MD5

    a8ed55bc83247a2c8c3273b6781f857d

  • SHA1

    cbdf77e0b0573ccb6c3c49186fceddf9c719dda4

  • SHA256

    9f8499ea5622c33ada7c0e0a9bd8a6cadf65632389b7162aa2144acbe5984c6a

  • SHA512

    bfb9fdd522e8ee34633dbf4c4b89bbef58fd566fc27deb46eac5ebbab0773986cc83a68845ce0e1920545b2cf5ae01bf41e1e317026cc5e491f27dcd3824aee7

  • SSDEEP

    12288:8pUJ3r6YkVwJgNnSykgb9cqWnw4q6ZmFhqsXRfMMMMM2MMMMM:8pUNr6YkVRFkgbeqeo68FhqSRfMMMMMN

Malware Config

Targets

    • Target

      JaffaCakes118_a8ed55bc83247a2c8c3273b6781f857d

    • Size

      564KB

    • MD5

      a8ed55bc83247a2c8c3273b6781f857d

    • SHA1

      cbdf77e0b0573ccb6c3c49186fceddf9c719dda4

    • SHA256

      9f8499ea5622c33ada7c0e0a9bd8a6cadf65632389b7162aa2144acbe5984c6a

    • SHA512

      bfb9fdd522e8ee34633dbf4c4b89bbef58fd566fc27deb46eac5ebbab0773986cc83a68845ce0e1920545b2cf5ae01bf41e1e317026cc5e491f27dcd3824aee7

    • SSDEEP

      12288:8pUJ3r6YkVwJgNnSykgb9cqWnw4q6ZmFhqsXRfMMMMM2MMMMM:8pUNr6YkVRFkgbeqeo68FhqSRfMMMMMN

    • 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