ryuk

General

Target

d91572ef64c5c77b1085a5e6cc40cab2a78f714288c29d1d8bdbb613aa5c9c6d
Size

201KB
Sample

220220-b59jasfea8
MD5

8fb17e62abc491dc6f8e9630d73d935d
SHA1

ed0b184eb9b1e2a8b9f95b79cfcd691d2a4f4084
SHA256

d91572ef64c5c77b1085a5e6cc40cab2a78f714288c29d1d8bdbb613aa5c9c6d
SHA512

ee075b4a368175c773f400424b97e57de84e37d5858e4c938edd6df9cb6e4917f7fdc0a83df3fdf253fe0401f50cc702d307cf33d05898414796fb36f077039e

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
  
  d91572ef64c5c77b1085a5e6cc40cab2a78f714288c29d1d8bdbb613aa5c9c6d
- Size
  
  201KB
- MD5
  
  8fb17e62abc491dc6f8e9630d73d935d
- SHA1
  
  ed0b184eb9b1e2a8b9f95b79cfcd691d2a4f4084
- SHA256
  
  d91572ef64c5c77b1085a5e6cc40cab2a78f714288c29d1d8bdbb613aa5c9c6d
- SHA512
  
  ee075b4a368175c773f400424b97e57de84e37d5858e4c938edd6df9cb6e4917f7fdc0a83df3fdf253fe0401f50cc702d307cf33d05898414796fb36f077039e
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