Resubmissions

28-10-2024 00:28

241028-asb7lawcqb 10

21-10-2024 19:42

241021-yemm6ssdnd 10

General

  • Target

    FireFoxSetup.exe

  • Size

    171KB

  • Sample

    241021-yemm6ssdnd

  • MD5

    014b0ea8fe05df0fdea1710537dabe57

  • SHA1

    91b47cd15009aceba1040cadabf3aa7cd6279a48

  • SHA256

    340830c7cba818a4e94a7791432f6a3e29bf103ebb47c70a6cb61e53c0ee5b2a

  • SHA512

    8503e8cd78442535226f41ba5d12dc0a20732940a24f865eb156ab9e75d6b4330bfdd10abba8add37713447317280f7b30f8c30bfb9f8642d15506a17e4d12d0

  • SSDEEP

    1536:qDEV10wHVJKuuwhSMEFv9by6POwWTCs6se7llqn17KineXd2wVKtivEYoNRh8RXt:dfjhaFv9bjOwFsgbcUieNJqKoPC5+Ls

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.22:43768

Mutex

2bRkaANDDdoPipKE

Attributes
  • Install_directory

    %AppData%

  • install_file

    FireFox.exe

aes.plain

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\@[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

      FireFoxSetup.exe

    • Size

      171KB

    • MD5

      014b0ea8fe05df0fdea1710537dabe57

    • SHA1

      91b47cd15009aceba1040cadabf3aa7cd6279a48

    • SHA256

      340830c7cba818a4e94a7791432f6a3e29bf103ebb47c70a6cb61e53c0ee5b2a

    • SHA512

      8503e8cd78442535226f41ba5d12dc0a20732940a24f865eb156ab9e75d6b4330bfdd10abba8add37713447317280f7b30f8c30bfb9f8642d15506a17e4d12d0

    • SSDEEP

      1536:qDEV10wHVJKuuwhSMEFv9by6POwWTCs6se7llqn17KineXd2wVKtivEYoNRh8RXt:dfjhaFv9bjOwFsgbcUieNJqKoPC5+Ls

    • Detect Xworm Payload

    • Wannacry

      WannaCry is a ransomware cryptoworm.

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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

    • 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

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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks