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General

  • Target

    https://github.com/Pyran1/MalwareCollection/raw/refs/heads/master/Ransomware/Ransomware.Jigsaw.zip

  • Sample

    250224-nppkeazny2

Malware Config

Targets

    • Target

      https://github.com/Pyran1/MalwareCollection/raw/refs/heads/master/Ransomware/Ransomware.Jigsaw.zip

    • Jigsaw Ransomware

      Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

    • Jigsaw family

    • Renames multiple (2888) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks