crimsonrat

General

Target

https://github.com/enginestein/Virus-Collection
Sample

250130-ykhlea1la1

Score

10^/10

Malware Config

Extracted

Family

crimsonrat

C2

185.136.161.124

Extracted

Path

C:\g6QpgrhJDdQZeF0\DECRYPT_YOUR_FILES.HTML

Ransom Note

<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>ZrydpkG+FUHUjAOn84NcqFEQHy1sBnFL1mEDj4i1sRB66MkffNA4vaUtE84yJ+fvERcg6xuANvvrd7F3GIKzlGzcWEL8BWSzpZ/YK8x0bNBqxaGGQ12io7wXG3AzvXFY1jlvBmGEwS5L58wyrc5vYC/tYkEtxlofgC1/jpJwYw0Qt8dxSpFJUc9zcM7bXEyn6doPsChxGvDkom44R3Bmzx2Y2tm1WEx8kwEQQPWAnOaaxCExXd+OqkR1CVc/G9RSnKiekHaqXPbLR6f5qOC3qtfrMap7sYRuzGDO+11By3jjgUeLohiALQICfFSGabAyVHn3AR1NkRHJrS/2iJA+bQ==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Emails

[email protected]

Targets

- Target
  
  https://github.com/enginestein/Virus-Collection
Score

10^/10

crimsonrat fantom defense_evasion discovery persistence ransomware rat
- CrimsonRAT main payload
- CrimsonRat
  Crimson RAT is a malware linked to a Pakistani-linked threat actor.
  rat crimsonrat
- Crimsonrat family
  crimsonrat
- Fantom
  Ransomware which hides encryption process behind fake Windows Update screen.
  ransomware fantom
- Fantom family
  fantom
- Renames multiple (1019) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Disables RegEdit via registry modification
  defense_evasion
- Disables Task Manager via registry modification
  defense_evasion
- Downloads MZ/PE file
- Executes dropped EXE
- Adds Run key to start application
  persistence
- Legitimate hosting services abused for malware hosting/C2
- Modifies WinLogon
  persistence
behavioral1