General
- Target winrar-x64-723tr.exe
- Size 3.7MB
- Sample261006-trf9psax4z
- SHA256 cffdebf3b84cc6d24452d2d40055dbff5f6588dddcec46aaefe8fd6aa44d0744
- MD5 95c12321d4f5d0b2e6e86537ff6e5dd8
- SHA1 982abb7f67d8180ce4892202d19ac5e68b8d097d
- SHA512 81b65dd1b16d4a3269a8f54758fb5f7a08204ea4dcb0a9a52bad7d84bf9464a9aa3e71fc0a16e55237e55130651ba9be01fe42c8a7f3e488e64f4890f9dcd7af
- SSDEEP 98304:AqBAKXJtzIEtTKDpDeEhSBq6ZxFDG1sd:FDIEtG8JpFDG2d
- TLSH T11206232AD6A914F4E177E538C8E20506DA737CAE477093CF33AD19962F237910E39B61
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
winrar-x64-723tr.exe
Resource
win10v2004-20260911-en
Malware Config
Extracted
-
C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___IUI21_.txt
-
cerber
- 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/B0C1-3E2A-1E27-0098-BDC6 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/B0C1-3E2A-1E27-0098-BDC6 2. http://xpcx6erilkjced3j.19kdeh.top/B0C1-3E2A-1E27-0098-BDC6 3. http://xpcx6erilkjced3j.1mpsnr.top/B0C1-3E2A-1E27-0098-BDC6 4. http://xpcx6erilkjced3j.18ey8e.top/B0C1-3E2A-1E27-0098-BDC6 5. http://xpcx6erilkjced3j.17gcun.top/B0C1-3E2A-1E27-0098-BDC6 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
-
http://xpcx6erilkjced3j.onion/B0C1-3E2A-1E27-0098-BDC6
-
http://xpcx6erilkjced3j.1n5mod.top/B0C1-3E2A-1E27-0098-BDC6
-
http://xpcx6erilkjced3j.19kdeh.top/B0C1-3E2A-1E27-0098-BDC6
-
http://xpcx6erilkjced3j.1mpsnr.top/B0C1-3E2A-1E27-0098-BDC6
-
http://xpcx6erilkjced3j.18ey8e.top/B0C1-3E2A-1E27-0098-BDC6
-
http://xpcx6erilkjced3j.17gcun.top/B0C1-3E2A-1E27-0098-BDC6
Extracted
-
C:\Program Files\7-Zip\Lang\DECRYPT_YOUR_FILES.HTML
- <html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>L8Z0cuuI73bETspVBquNgAH1DauX1lmNw44goyTC3ZPHmk812iaB7KLbP+pWJxoZHkpqGvSB5xtjp8Qrz9hXwQF3MRMMHvkJtW9okQlmcrnVnpq3R52fV53bv+cs1qh9o3/bHt1QL/sUHG05sSaWjinKsxQQIsKLFNsqrsS+GNoBk4W/vNOduAZQ8sUt7EXERYH/KU19uj3MqYiqWqeduZR5ruQkiWmW4Kxc4IG6k/WGmWwr0l927mqSpXkcdAyOFGMIuAr97BSuCnEtB/5Iiabl6qUvJ6PR5sYvm9PON31nNHTtlaGL73BZFatZnc5Qp3S58+8l0fCjrSjLh4ZGSw==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>
Targets
-
- Target winrar-x64-723tr.exe
- Size 3.7MB
- SHA256 cffdebf3b84cc6d24452d2d40055dbff5f6588dddcec46aaefe8fd6aa44d0744
- MD5 95c12321d4f5d0b2e6e86537ff6e5dd8
- SHA1 982abb7f67d8180ce4892202d19ac5e68b8d097d
- SHA512 81b65dd1b16d4a3269a8f54758fb5f7a08204ea4dcb0a9a52bad7d84bf9464a9aa3e71fc0a16e55237e55130651ba9be01fe42c8a7f3e488e64f4890f9dcd7af
- SSDEEP 98304:AqBAKXJtzIEtTKDpDeEhSBq6ZxFDG1sd:FDIEtG8JpFDG2d
- TLSH T11206232AD6A914F4E177E538C8E20506DA737CAE477093CF33AD19962F237910E39B61
- MD5 SHA1 SHA512 SSDEEP TLSH
Family: Cerber
Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.
Family: Fantom
Ransomware which hides encryption process behind fake Windows Update screen.
Renames multiple (464) 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 (1138) amount of remote hosts
This may indicate a network scan to discover remotely running services.
Disables Task Manager via registry modification
Creates a file in the Startup directory
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
Adds Run key to start application
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
Modifies Windows Firewall
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Discovers running processes
Running process information can be used to identify security tools or plan follow-on actions.
Drops file in System32 directory
Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
Sets desktop wallpaper using registry
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Windows Management Instrumentation
1Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Event Triggered Execution
3Change Default File Association
1Component Object Model Hijacking
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
2Create or Modify System Process
1Windows Service
1Event Triggered Execution
3Change Default File Association
1Component Object Model Hijacking
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
3Virtualization/Sandbox Evasion
1System Checks
1Discovery
Browser Information Discovery
1Network Service Discovery
1Peripheral Device Discovery
1Process Discovery
1Query Registry
5Remote System Discovery
1System Information Discovery
6System Location Discovery
1System Language Discovery
1System Network Configuration Discovery
2Internet Connection Discovery
1System Time Discovery
1Virtualization/Sandbox Evasion
1System Checks
1