Analysis

  • max time kernel
    12s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    15/06/2021, 09:55

General

  • Target
    8449615a04b7ea85bc73fbede0cf0d95.exe
  • Size 235KB
  • Sample210615-wchnmsrsns
  • SHA256 a7d608238504263bc730a5744ff6808c78d3003c658db1eec8a30ffd5152f257
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • formbook

Version
  • 4.1

C2
  • http://www.personalizedyardsigns.com/xkcp/

Decoy
  • plcnotary.com

  • pennywisebusiness.net

  • negatzone.com

  • hangclinic.com

  • choice-home-warranty-review.com

  • oslojistas.com

  • keguanchina.com

  • amazoncarbonhub.com

  • myworkaccident.com

  • shipu299.com

  • henselectrlc.com

  • store55588.com

  • 11ncbee.net

  • reissantorini.com

  • karta.gold

  • goldenstatesurplus.net

  • soslifefood.com

  • bis-adapter.net

  • harrywalia.com

  • myboutiqueflowers.com

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Formbook Payload 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8449615a04b7ea85bc73fbede0cf0d95.exe
    "C:\Users\Admin\AppData\Local\Temp\8449615a04b7ea85bc73fbede0cf0d95.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3236
    • C:\Users\Admin\AppData\Local\Temp\8449615a04b7ea85bc73fbede0cf0d95.exe
      "C:\Users\Admin\AppData\Local\Temp\8449615a04b7ea85bc73fbede0cf0d95.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1388

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1388-117-0x0000000000400000-0x000000000042E000-memory.dmp

        memory/1388-118-0x00000000009E0000-0x0000000000D00000-memory.dmp