General

  • Target

    Bark-1.5.1.dll

  • Size

    6.5MB

  • Sample

    240222-rlx9xsbc53

  • MD5

    c5afebc4d9076df032ea86b096e25b41

  • SHA1

    fb724dfbdaff027b9c9d1ebbbba18377fd47df07

  • SHA256

    1c664b4e8c029d4bf45836f4636445177cc020c03d5fbbb2a35b27a2f5c860bb

  • SHA512

    0a1a9459ad2594024c294937499fc99d6930e5bc757a39874fcc484ef50086467dae698e0b9b67aaacbe091195dc7ad174dea5d6af9f13c82e29af0c167d54b3

  • SSDEEP

    196608:jDFT/qGdWDufv6GDSUpJedVJ6uiIMRy3DGb06Pe9:jZTRdiXGD9pvujMR6DU

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: 115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn 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

115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn

Targets

    • Target

      Bark-1.5.1.dll

    • Size

      6.5MB

    • MD5

      c5afebc4d9076df032ea86b096e25b41

    • SHA1

      fb724dfbdaff027b9c9d1ebbbba18377fd47df07

    • SHA256

      1c664b4e8c029d4bf45836f4636445177cc020c03d5fbbb2a35b27a2f5c860bb

    • SHA512

      0a1a9459ad2594024c294937499fc99d6930e5bc757a39874fcc484ef50086467dae698e0b9b67aaacbe091195dc7ad174dea5d6af9f13c82e29af0c167d54b3

    • SSDEEP

      196608:jDFT/qGdWDufv6GDSUpJedVJ6uiIMRy3DGb06Pe9:jZTRdiXGD9pvujMR6DU

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Downloads MZ/PE file

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

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

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks