Overview

overview

10

Static

static

3

JigsawRansomware.exe

windows11-21h2-x64

10

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General

  • Target
    JigsawRansomware.exe
  • Size 1.5MB
  • Sample240326-a65fasbb24
  • SHA256 2488fac944393b2110bc68adf52434c6b1d0e85f70925f34c7728c124d63bf1d
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
jigsawpersistenceransomwarespywarestealer

Malware Config

Targets

    • Target
      JigsawRansomware.exe
    • Size 1.5MB
    • SHA256 2488fac944393b2110bc68adf52434c6b1d0e85f70925f34c7728c124d63bf1d
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    jigsawpersistenceransomwarespywarestealer

    • Jigsaw Ransomware

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

      ransomwarejigsaw

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Renames multiple (1474) files with added filename extension

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

      ransomware

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks