Overview

overview

10

Static

static

802fef4d4f...f5.exe

windows7_x64

10

802fef4d4f...f5.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    145s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20/05/2022, 18:15

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General

  • Target
    802fef4d4f81c443497362711a7d8611741c30373c96d3229d699f225552a5f5.exe
  • Size 78KB
  • Sample220520-wvyn9sbff8
  • SHA256 802fef4d4f81c443497362711a7d8611741c30373c96d3229d699f225552a5f5
  • MD5 SHA1 SHA512
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 3 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\802fef4d4f81c443497362711a7d8611741c30373c96d3229d699f225552a5f5.exe
    "C:\Users\Admin\AppData\Local\Temp\802fef4d4f81c443497362711a7d8611741c30373c96d3229d699f225552a5f5.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3172
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\802fef4d4f81c443497362711a7d8611741c30373c96d3229d699f225552a5f5.exe
      2⤵
      • Executes dropped EXE
      • Modifies extensions of user files
      • Drops file in Program Files directory
      PID:4796

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        drpbx.exe
        • Path C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
        • Size 78KB
        • SHA256 802fef4d4f81c443497362711a7d8611741c30373c96d3229d699f225552a5f5
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        drpbx.exe
        • Path C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
        • Size 78KB
        • SHA256 802fef4d4f81c443497362711a7d8611741c30373c96d3229d699f225552a5f5
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/3172-130-0x00007FFABB8E0000-0x00007FFABC316000-memory.dmp
        Download

        memory/4796-134-0x00007FFABB8E0000-0x00007FFABC316000-memory.dmp
        Download