General

  • Target
    https://github.com/Da2dalus/The-MALWARE-Repo/tree/master/Ransomware/
  • Sample260429-lx5kgset7m

Malware Config

Extracted

Path
  • F:\$RECYCLE.BIN\S-1-5-21-745935970-1373868228-562466063-1000\RIRPWUUQP-MANUAL.txt

  • gandcrab

Ransom Note
  • ---= GANDCRAB V5.2 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .RIRPWUUQP The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/e78b99c2522aedb6 | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- lAQAAEEi2Y5V290rSo08BEyAyz75JTlQotj1XQiOUXshNmB3hs0Wa+QOSybkFeiMvm5VC4vQZfso8z59p2iudDDURa6sUTZng4KefJCneiDaKCO/tgDZ0XegprmpJ7OcyekK48jCr1nkvEBsPfriUuXPtAU7gr0M+/kSPHpWUXWJErX8CSLbza/Zj6iKbAqX0KJ+DgnrBztV4sVNZxXwa5RHyguIzD0OAGagnxujHbpnwj1vRmoh7P8MobYxD1kGFSAAuK8F3wEwCYq89EF2BCwPzSrixyENh24v6A5hCJVYAdw0uDDECizqD0yNumtFVWMe7YCqP7IHLUQxGNP+SbcEbmS18N2EBucA1a6E1lPnAUWcjC8jpJgdpf8cByC0ryB2clYXJT+C/lqQlKpnoqJvESrAhaB9I2DLssAriIwoo4hNJ2UTT1Et065lxtIXkXImcIQXpAX019iyhFrpuonyEQVo0NQodmNke9Wx+A7N8FDx54Zvv2ImGVM+WOq2D63ps2oem7jYklaJO8Em0BnPtUoBJe5CUfe14CLSUQtYbmwRMjRvekuVJDxNPQQ8NPicmSid9YX0Av9L1VeCWGWxsGHoK6wm97Gy8zyFSCtgECdsf1MQ7Yoldmug+CXrE+WNA16Fdc27ABz5kKBvoOPz++VSQxLKvf8GU/jAq0/jHT7RspQewBynFNWsveV9xvWS37LjZtPSs7Rp9f21dCja0bXoZ9qsADlaWxorDjJWKSiQoQtFNNyPUVtwaEqIax1fInm/oOrWG753LqKmmQG8lan8UVsdN9Ux4KeapR4Lm1T86SQo1ERflJrhoaKc/27fBUUS+PMX+ftxJPEKoNLH95x0GqVVegWFJU81SgghGTUO0P49+Dbv3KF9v1FhI5Z/7kw9A9dFgCyWi9oEzhXRcszrTN/DHj0RJ18pD1quSzes0gR4j06O1S1Ct3c0XWekyr10yLJ2vCAB119IDAS6VIzPfloLn5lLsapBN5wNAYWw6tEf0h0DGA4iJj2bXNu+kA5FQz5E0CtjXl2rStQoVmWpEsmAw4OQQNXWjzDI+jF+Qui8Ee/oLd9W9LfJaNMoy+XZCBttt0o0rM6nSu8IsO3az9TYeutcZTm0YaNo8tvEVdUqbLQsTyF6xdwtg+WwJY13s3xSi8SSJiLtk5APaTNzcLDYzvqx0L8Qw2Qq6LUTQBbJjVws+UD7O0KnhDtrQzxcFZurC9vWtvYQG1v+lKaN2byDiNAbTeEGPGvUViIBj3Vh0ZDbxwe7MDO2SnT1JWe4Q8kdln23LxD6o2XEW5Oa1eQ6Fa56bWZdWJlZXzWMqGfOO2ozmH7Dr9xusPyRyEzHmk1sFHZutOjv7fXq6DO/JjiL6f0hKuOYS1Xg0l1MvsIneqGUyiCNrPhNnWbceV7//do8Vk20imQnvak8NVNnxlvAYDyJp8lmV4e50ALUEj3v2udv3YwUyhOIpQVC/TKFvXpCBw8uZl+DDHn3rXdREefKrhqJgwBQCkxZlCHF3sCAae76qRVzGq3dsFwKH2/FET/CFocS5Inx6vQHaT9cU8HOyaVaWkG5Ztmu8bcj5wS9G4RR2iKSmjQs5ttzlUKQ03xuc4atg5LgccNLl/LqJj2EFeBoKJLhCxA7oVbl1GV+A710jZfsy6P+3Ce9BERTyo/eGj+tvswbFHYR7S1buD1QRaaiYmJH+TazRXCm69ozOqpiQDn1qTiBO0SyiPOE0JmgGfAsUbdGlLsvFvZjRpd5+TJSEnXcqwIqn2OYFsRKcdn1+mzqT2UEXaclv58Xa/SueS3HgYmVvvOPEPTomStAPAIcShcaYw3nD/rnIf/erLGug2E0hH+tHSwtYz82+P0F4ufbLAmomWIaTWuolEEPFVz+hlZc/g9iaHwlOHcJSgMSAZqsj34wnvdW5QjU9uvHHtn5zFuIWb8FGm7CX6JW65L/7hGtzpJ8J7jeTYKQS2LNBnKyJwOwSfkSb2/3IlYi9gu8LknSh3+xurU5IQSuYkOcN4Le9EJPKbOI6cAfRwy4NBi3L3LUBI3VtRrRDS4aKKliFwGPpZyUl11QGqbbuV4yntVcPL6YucRAybC6AK7HCyRIrTFqL9l0wS27ElpTCJfocZ5Azu5PECIBP1NvPCjW0nlq2YokzOAq0rNyRmE/XD+vVdqic+SKQifjZ/51rV3CGd7uyB59ziKO+zBO5kP3K/Xa3mdMSCUcj4kRpRhSJCQLR9nlMmv0SN68tVg= ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 7ftDEgLb/ZS0lcmZbHM61KDJ6AOtD78KkA7absMgUXYxWLsC+5+UYF9xVmD09MvJKZDSAuuVteDFRXLIKnQXQzua3LPyzokSUuglaqKXwabsGM4pXku5In6gtMQMqg7sgEh1XW1iPMFgiUj/s1LdWpJHdiPjMpn7rCZNO/A31mak0K8RefoREu3BxtlAsseHWfVIIKN0U4NnA3w0Ga7XDLlF3iOIB6ImYbF6Z/7MBN2mgBr2rZ2gU1R7jNx2WKAyu4W+5zlHFnKwMISBi1CwemOo6FrxnP+Z5F9bSR7OvDBsmLj7oYD6GBgpBqj3RSAVfvfE0yZSXyCRtLeJKNAKBixq/MY3R+m3YrHOmdGRjkeCP4jyqfMxLObjX6P0r1BW4eYoT03JrPa/L0B0wffnS0ez96BFoTHFrZ2FPDax4ihDud3oMVoD6iuVyemvqAdvYbwCrtIyoS8B1f+lVjmQ7qx4Duw9gT+wK0yub5gfz9wpLQCj3bimwDPi8jPeKPiggI2bWKz+7QkWvC2ihYFfEuZEtCM4ANvhw9QRIE71VUGcye6MeJ1R1l8/9eQQe20E3nSOCqHrLtcaPCWVcMp8LqMb9wmQcCuV87DWEYusQrSRnMKaOEJ8b8E061HMc3fS06JJDB/Fw4HhqAVwh0aPxJ3GvHUfm+rKP/M= ---END PC DATA---
URLs
  • http://gandcrabmfe6mnef.onion/e78b99c2522aedb6

Extracted

Path
  • C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\_R_E_A_D___T_H_I_S___45EP_.txt

  • cerber

Ransom Note
  • Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only one way to decrypt your files is to receive the private key and decryption program. To receive the private key and decryption program go to any decrypted folder, inside there is the special file (*_R_E_A_D___T_H_I_S_*) with complete instructions how to decrypt your files. If you cannot find any (*_R_E_A_D___T_H_I_S_*) file at your PC, follow the instructions below: ----- 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://xpcx6erilkjced3j.onion/97D8-D427-AA35-0098-B5F7 Note! This page is available via "Tor Browser" only. ----- Also you can use temporary addresses on your personal page without using "Tor Browser". ----- 1. http://xpcx6erilkjced3j.1n5mod.top/97D8-D427-AA35-0098-B5F7 2. http://xpcx6erilkjced3j.19kdeh.top/97D8-D427-AA35-0098-B5F7 3. http://xpcx6erilkjced3j.1mpsnr.top/97D8-D427-AA35-0098-B5F7 4. http://xpcx6erilkjced3j.18ey8e.top/97D8-D427-AA35-0098-B5F7 5. http://xpcx6erilkjced3j.17gcun.top/97D8-D427-AA35-0098-B5F7 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs
  • http://xpcx6erilkjced3j.onion/97D8-D427-AA35-0098-B5F7

  • http://xpcx6erilkjced3j.1n5mod.top/97D8-D427-AA35-0098-B5F7

  • http://xpcx6erilkjced3j.19kdeh.top/97D8-D427-AA35-0098-B5F7

  • http://xpcx6erilkjced3j.1mpsnr.top/97D8-D427-AA35-0098-B5F7

  • http://xpcx6erilkjced3j.18ey8e.top/97D8-D427-AA35-0098-B5F7

  • http://xpcx6erilkjced3j.17gcun.top/97D8-D427-AA35-0098-B5F7

Targets

    • Family: Cerber

      Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

    • Family: Gandcrab

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

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Remote Service Session Hijacking: RDP Hijacking

      Adversaries may hijack a legitimate user's remote desktop session to move laterally within an environment.

    • Renames multiple (570) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Contacts a large (1137) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Checks computer location settings

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

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Drops startup file

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Modifies visibility of existing users in the login screen

      A user account was hidden or made visible on the Windows login screen through a registry modification.

    • 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

    • Contacts third-party web service commonly abused for C2

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

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

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

    • Password Policy Discovery

      Attempt to access detailed information about the password policy used within an enterprise network.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks