crimsonrat

General

Target
Guess the NFL Team.mp4
Size 14.5MB
Sample251112-yzmhxa1jdl
SHA256 7fef4c251deb0297a103d68e074b287a687599c92e9ff8b06cf7a2b72698fb9e
MD5 3c552def1358f7a71a514e02cb1135f5
SHA1 8439223a49470d72841d97e4240398341439fbe7
SHA512 aa8b12ba7d2c308cdbbfd0ff7107c574d2692c15a956c57553c630f9455aa9bc2ed966f1d95d9d7efc8ccbb9eb353a7b1cbe1d3ace40634040f442ccf67dc809
SSDEEP 196608:A3eB5B8N6EXdSHxuSFobVmwUHHnhDjG1NmriI89csxnryJO199pk1gWPT2w698q:AbN1NS8CJ/HH1LM9lryJYvWPlq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Malware Config

Extracted

Family

crimsonrat

C2

185.136.161.124

Extracted

Path

C:\Program Files\7-Zip\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>Vt1OtBwAygOjHvf53y2YX5FHYiln3Pcz20SgMGzSlaexKdeA9GRfHCT+jy+Q9Z5dlUwScnro/39c4MH3I4dfd5jRo/3hXkeiuTXaqW/4YdmMq2f5Qt9vN1OSrTuF3xYsz930PRvpiDe6t0rjpwZfctbd9ibrEcTJ79muzcqbM0X80XUetY38nuoSWBHwaV7rHM0u2rAaNnDKAf+WFqVQ2SEVQCtSzt7nf1/cPXK7+FdTuCqeqnW3OR1JPcA/5ky964L9c+IwKOSxFp5yLSo7ySpjPs3zOJvokUlapRI89nRvh2XwzRRuoJ2QJ7DZzfVSrHKA4OUPO08fDh5dmi3SeA==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Emails

Targets

- Target
  Guess the NFL Team.mp4
- Size 14.5MB
- SHA256 7fef4c251deb0297a103d68e074b287a687599c92e9ff8b06cf7a2b72698fb9e
- MD5 3c552def1358f7a71a514e02cb1135f5
- SHA1 8439223a49470d72841d97e4240398341439fbe7
- SHA512 aa8b12ba7d2c308cdbbfd0ff7107c574d2692c15a956c57553c630f9455aa9bc2ed966f1d95d9d7efc8ccbb9eb353a7b1cbe1d3ace40634040f442ccf67dc809
- SSDEEP 196608:A3eB5B8N6EXdSHxuSFobVmwUHHnhDjG1NmriI89csxnryJO199pk1gWPT2w698q:AbN1NS8CJ/HH1LM9lryJYvWPlq
- MD5 SHA1 SHA512 SSDEEP
Score

10^/10

adware defense_evasion discovery crimsonrat fantom lateral_movement persistence privilege_escalation ransomware rat spyware
- 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
- Process spawned unexpected child process
  This typically indicates the parent process was compromised via an exploit or macro.
- 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.
  lateral_movement
- Renames multiple (1014) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Badlisted process makes network request
  Network request originating from process or tool commonly abused by malware.
- Disables Task Manager via registry modification
  defense_evasion
- Modifies Windows Firewall
  defense_evasion
- Sets file to hidden
  Modifies file attributes to stop it showing in Explorer etc.
  defense_evasion
- Sets service image path in registry
  persistence
- Drops startup file
- Executes dropped EXE
- Impair Defenses: Safe Mode Boot
  defense_evasion
- 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.
  defense_evasion
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Drops desktop.ini file(s)
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
- Network Share Discovery
  Attempt to gather information on host network.
  discovery
- Password Policy Discovery
  Attempt to access detailed information about the password policy used within an enterprise network.
  discovery
- Drops file in System32 directory
behavioral1