ryuk

General

Target

a02107e2dc63a86777f46ed7d3c18ef4485eac83cb14ca1a0fca2f4d80e815cd
Size

201KB
Sample

220220-ehe8qagdf6
MD5

bf39de2f9f4f5070199213161d9d6c05
SHA1

5ce23ef35396f777855f7a3b05e47329cc7226b7
SHA256

a02107e2dc63a86777f46ed7d3c18ef4485eac83cb14ca1a0fca2f4d80e815cd
SHA512

1c0c591c5fdb65fc33c2ded6e89ab65aac5f45996068ca2e0b0d8a56d56371f9c104cfa15641af7bee4127a92d69fa5ed43a7f8dd8bc251440ea8b513e262cd9

Score

10^/10

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note

<html><body><p style="font-weight:bold;font-size:125%;top:0;left:0;"> [email protected] <br> </p><p style="position:absolute;bottom:0;right:1%;font-weight:bold;font-size:170%">balance of shadow universe</p><div style="font-size: 550%;font-weight:bold;width:50%;height:50%;overflow:auto;margin:auto;position:absolute;top:35%;left:40%;">Ryuk</div></body></html��

Emails

[email protected]

Extracted

Path

C:\RyukReadMe.html

Family

ryuk

Ransom Note

[email protected] balance of shadow universe Ryuk

Emails

[email protected]

Targets

- Target
  
  a02107e2dc63a86777f46ed7d3c18ef4485eac83cb14ca1a0fca2f4d80e815cd
- Size
  
  201KB
- MD5
  
  bf39de2f9f4f5070199213161d9d6c05
- SHA1
  
  5ce23ef35396f777855f7a3b05e47329cc7226b7
- SHA256
  
  a02107e2dc63a86777f46ed7d3c18ef4485eac83cb14ca1a0fca2f4d80e815cd
- SHA512
  
  1c0c591c5fdb65fc33c2ded6e89ab65aac5f45996068ca2e0b0d8a56d56371f9c104cfa15641af7bee4127a92d69fa5ed43a7f8dd8bc251440ea8b513e262cd9
Score

10^/10

ryuk persistence ransomware
- Ryuk
  Ransomware distributed via existing botnets, often Trickbot or Emotet.
  ransomware ryuk
- Executes dropped EXE
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL
- Adds Run key to start application
  persistence
behavioral1 behavioral2