Overview

overview

10

Static

static

3

jigsaw.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    Ransomware.Jigsaw.zip
  • Size 239KB
  • Sample240915-18mldavfle
  • SHA256 86a391fe7a237f4f17846c53d71e45820411d1a9a6e0c16f22a11ebc491ff9ff
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
jigsawdiscoverypersistenceransomwarespywarestealer

Malware Config

Targets

    • Target
      jigsaw
    • Size 283KB
    • SHA256 3ae96f73d805e1d3995253db4d910300d8442ea603737a1428b613061e7f61e7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    jigsawdiscoverypersistenceransomwarespywarestealer

    • Jigsaw Ransomware

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

      ransomwarejigsaw

    • Renames multiple (3735) files with added filename extension

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

      ransomware

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Adds Run key to start application

      persistence
    behavioral1

MITRE ATT&CK Enterprise v15

Tasks