General

  • Target

    RNSM00467.7z

  • Size

    45.7MB

  • Sample

    241002-wvprcstdjd

  • MD5

    5f627fc7873e169b68e9ef7b451af4e7

  • SHA1

    0f93fa259755ebb3db906eeec451e7d33f70baf1

  • SHA256

    e876044c37cc3f095ae06e90abf8c4acf3f51e8073e07f8db8d7759d5979830b

  • SHA512

    840ddebf95227df1e958e8597d7ef65c5efefd714b09b6334bfd20deae9088a852b6abe104d89a8bf08b5c0eb2c7838d7ca599e95bea86158f246f0c669f17d3

  • SSDEEP

    786432:EIZpaUGmOROZa4JakO54pLGERvqY/bLd6Q1SYZxdzqw4rxvttrDDo/ongF4m:v3GmOGa/9GG2x5zZLzqJxvnrgQngF4m

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://cdn.discordapp.com/attachments/880265796767608892/882377555729063987/New_Text_Document.txt

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://cdn.discordapp.com/attachments/880265796767608892/881902176195186728/New_Text_Document.txt

Extracted

Path

C:\Users\Admin\Desktop\index.html

Ransom Note
<!DOCTYPE html> <html lang='en'> <head> <meta charset='UTF-8'> <meta http - equiv='X-UA-Compatible' content='IE=edge'> <meta name='viewport' content='width=device-width, initial-scale=1.0'> <title> Document </title> </head> <body> <h2>What Happened to My Computer?</h2> <p> Your important files are encrypted. Many of your documents, photos, videos, databases and other files are no longer accessible because they have been encrypted. Maybe you are busy looking for a way to recover your files, but do not waste your time. Nobody can recover your files without our decryption service. </p> <h2>Can I Recover My Files?</h2> Sure. We guarantee that you can recover all your files safely and easily. But if you want to decrypt all your files, you need to pay. You have 24 hours to submit the payment. After that the price will be doubled. Also, if you don't pay in 7 days, you will not be able to recover your files forever. <h2>How Do I Pay?</h2> <p> Payment is accepted in Bitcoin only. For more information, click <About bitcoin>. </p> <p> Please check the current price of Bitcoin and buy some bitcoins. For more information, click <How to buy bitcoins>. </p> <p> And send the correct amount to the address specified in this window. </p> <p> After your payment, click <Check Payment>. Best time to check: 9:00am - 11:00am GMT from Monday to Friday. </p> <p> Once the payment is checked, you can start decrypting your files immediately. </p> <h2>Contact</h2> If you need our assistance, send a message by clicking <Contact Us>. <p style='color: red;'> We strongly recommend you to not remove this software, and disable your anti-virus for a while, until you pay and the payment gets processed. If your anti-virus gets updated and removes this software automatically, you will not be able to recover your files even if you pay! </p> </body> </html>
URLs

http

Extracted

Family

djvu

C2

http://tbpws.top/fhsgtsspen6/get.php

Attributes
  • extension

    .efdc

  • offline_id

    rCmd3j4aykEBx0X7GSZFXZTRaA1p1vOlNlSS59t1

  • payload_url

    http://securebiz.org/dl/build2.exe

    http://tbpws.top/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-8FD9fC02w8 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0332gDrgo

rsa_pubkey.plain

Extracted

Path

C:\ProgramData\readme.txt

Family

conti

Ransom Note
All of your files are currently encrypted by CONTI strain. As you know (if you don't - just "google it"), all of the data that has been encrypted by our software cannot be recovered by any means without contacting our team directly. If you try to use any additional recovery software - the files might be damaged, so if you are willing to try - try it on the data of the lowest value. To make sure that we REALLY CAN get your data back - we offer you to decrypt 2 random files completely free of charge. You can contact our team directly for further instructions through our website : TOR VERSION : (you should download and install TOR browser first https://torproject.org) http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/ HTTPS VERSION : https://contirecovery.xyz/ YOU SHOULD BE AWARE! Just in case, if you try to ignore us. We've downloaded a pack of your internal data and are ready to publish it on out news website if you do not respond. So it will be better for both sides if you contact us as soon as possible. ---BEGIN ID--- ZNBmQgFGbXCmtCB0aaZmMTpHL2YtecUgu6blxIMU12WwvHaAt0PdnKmkdK1zz4PQ ---END ID---
URLs

http://contirecj4hbzmyzuydyzrvm2c65blmvhoj2cvf25zqj2dwrrqcq5oad.onion/

https://contirecovery.xyz/

Targets

    • Target

      RNSM00467.7z

    • Size

      45.7MB

    • MD5

      5f627fc7873e169b68e9ef7b451af4e7

    • SHA1

      0f93fa259755ebb3db906eeec451e7d33f70baf1

    • SHA256

      e876044c37cc3f095ae06e90abf8c4acf3f51e8073e07f8db8d7759d5979830b

    • SHA512

      840ddebf95227df1e958e8597d7ef65c5efefd714b09b6334bfd20deae9088a852b6abe104d89a8bf08b5c0eb2c7838d7ca599e95bea86158f246f0c669f17d3

    • SSDEEP

      786432:EIZpaUGmOROZa4JakO54pLGERvqY/bLd6Q1SYZxdzqw4rxvttrDDo/ongF4m:v3GmOGa/9GG2x5zZLzqJxvnrgQngF4m

    • Conti Ransomware

      Ransomware generally thought to be a successor to Ryuk.

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • GandCrab payload

    • Gandcrab

      Gandcrab is a Trojan horse that encrypts files on a computer.

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • 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.

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Uses Tor communications

      Malware can proxy its traffic through Tor for more anonymity.

    • Hide Artifacts: Hidden Files and Directories

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

MITRE ATT&CK Enterprise v15

Tasks