General

Malware Config

Extracted

Family
  • blacknet

Version
  • v3.7.0 Public

Botnet
  • [ID]

C2
  • [HOST]

Mutex
  • [MUTEX]

Attributes
  • antivm

    false

  • elevate_uac

    false

  • install_name

    [Install_Name]

  • splitter

    [Splitter]

  • start_name

    [StartupName]

  • startup

    false

  • usb_spread

    false

aes.plain

Extracted

Path
  • C:\Users\Admin\AppData\Local\Temp\eb6dbbc1-3d35-437d-bc4e-30dbe30b0d5b_Ransomware.WannaCry.zip.d5b\@[email protected]

  • wannacry

Ransom Note
  • Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw Next, please find an application file named "@[email protected]". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �
Wallets
  • 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw

Targets

    • BlackNET payload

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Family: BlackNET

      BlackNET is an open source remote access tool written in VB.NET.

    • Family: Wannacry

      WannaCry is a ransomware cryptoworm.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Downloads MZ/PE file

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Suricata alert: Tor Node X.509 Certificate Pattern Detected - Inbound

      Network activity triggered a Suricata alert

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • File and Directory Permissions Modification: Windows File and Directory Permissions Modification

    • Drops file in System32 directory

    • Executes a VBScript file via the Windows Script Host.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks