Overview

overview

10

Static

static

Cats.exe

windows7_x64

10

Cats.exe

windows10_x64

10

Analysis

  • max time kernel
    121s
  • max time network
    12s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    29-03-2021 11:33

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General

  • Target

    Cats.exe

  • Size

    187KB

  • MD5

    d3be36fa40f8ead25681fab7a9a0af12

  • SHA1

    7a4fd7bccee34bb435126e8ab600277c8e1e9440

  • SHA256

    79193fb1b7ab2698ddd617aa24fa64c08235851a78245d066e6fde02b73856ca

  • SHA512

    c50fbc039a0e15cdac8823174297ebc35772fa40f4a56d89847b5f982db7075d5918f622efb9b3b3b8aa76159fcc68febcb8d3c2bb52040beb351a141afb0dc0

Score
10/10
jigsawpersistenceransomwarespywarestealer

Malware Config

Signatures

  • Jigsaw Ransomware

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

    ransomwarejigsaw
  • Executes dropped EXE 1 IoCs
  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Cats.exe
    "C:\Users\Admin\AppData\Local\Temp\Cats.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1020
    • C:\Users\Admin\AppData\Local\Google (x86)\Chrome32.exe
      "C:\Users\Admin\AppData\Local\Google (x86)\Chrome32.exe" C:\Users\Admin\AppData\Local\Temp\Cats.exe
      2⤵
      • Executes dropped EXE
      • Modifies extensions of user files
      • Drops file in Program Files directory
      PID:1996

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1020-2-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/1020-4-0x0000000000580000-0x0000000000582000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1020-3-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/1996-8-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/1996-9-0x000007FEF5110000-0x000007FEF5AAD000-memory.dmp

    Filesize

    9.6MB

    Download

  • memory/1996-10-0x0000000001FD0000-0x0000000001FD2000-memory.dmp

    Filesize

    8KB

    Download

  • memory/1996-11-0x0000000001FDB000-0x0000000001FFA000-memory.dmp

    Filesize

    124KB

    Download

  • memory/1996-12-0x0000000001FFA000-0x0000000001FFB000-memory.dmp

    Filesize

    4KB

    Download