General

  • Target

    dyv.png

  • Size

    1.8MB

  • Sample

    241106-d6jqdatjhv

  • MD5

    11b7bbb67f673539b5a2c0f2962e3a80

  • SHA1

    7049f78608ddf8fcfedbf24724bcaf92794866f3

  • SHA256

    ec21bc5f665662e4492b99aaae389f5a132619ef73631118b6e2d3a3a231e275

  • SHA512

    c21d38a50fd8e4bec8027c6bd103d81b354afd2c1e1fdc581d016a40eaf9ffa879d50a39361dd36a8bf0197685161173b154c7902e8e861bb835bbbd79ba0b87

  • SSDEEP

    49152:oJkPBnd7Ez7fqZxqjbfb66iezYy/0eSOYseXW58n5:oJEEz7QxqjbOnezYy/ZVYXW58n5

Malware Config

Extracted

Path

C:\Users\Admin\Downloads\@[email protected]

Family

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: 13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94 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

13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94

Targets

    • Target

      dyv.png

    • Size

      1.8MB

    • MD5

      11b7bbb67f673539b5a2c0f2962e3a80

    • SHA1

      7049f78608ddf8fcfedbf24724bcaf92794866f3

    • SHA256

      ec21bc5f665662e4492b99aaae389f5a132619ef73631118b6e2d3a3a231e275

    • SHA512

      c21d38a50fd8e4bec8027c6bd103d81b354afd2c1e1fdc581d016a40eaf9ffa879d50a39361dd36a8bf0197685161173b154c7902e8e861bb835bbbd79ba0b87

    • SSDEEP

      49152:oJkPBnd7Ez7fqZxqjbfb66iezYy/0eSOYseXW58n5:oJEEz7QxqjbOnezYy/ZVYXW58n5

    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • Badrabbit family

    • InfinityLock Ransomware

      Also known as InfinityCrypt. Based on the open-source HiddenTear ransomware.

    • Infinitylock family

    • UAC bypass

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Wannacry family

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • A potential corporate email address has been identified in the URL: 1=@K

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks for any installed AV software in registry

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

    • Legitimate hosting services abused for malware hosting/C2

    • Mark of the Web detected: This indicates that the page was originally saved or cloned.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks