ryuk

General

Target

e33cc528ba4611636e7d1f52f634f46cb0fe9ae7e25250b04723452f994aaddf
Size

192KB
Sample

220220-bgkv2afbh8
MD5

ce36b667dc2411b83ab678a66c42065a
SHA1

40a41587d785406e2d5c8b782492f18b8c034305
SHA256

e33cc528ba4611636e7d1f52f634f46cb0fe9ae7e25250b04723452f994aaddf
SHA512

503f0fc072271880a13bb412eee27191e8d2f1d0af51daf5d4d55be6f33843f6427a0155e1600d447526147a7647e1c883853e30fe72a57904bd613af16104ff

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

Family

ryuk

Ransom Note

[email protected] balance of shadow universe Ryuk

Emails

[email protected]

Targets

- Target
  
  e33cc528ba4611636e7d1f52f634f46cb0fe9ae7e25250b04723452f994aaddf
- Size
  
  192KB
- MD5
  
  ce36b667dc2411b83ab678a66c42065a
- SHA1
  
  40a41587d785406e2d5c8b782492f18b8c034305
- SHA256
  
  e33cc528ba4611636e7d1f52f634f46cb0fe9ae7e25250b04723452f994aaddf
- SHA512
  
  503f0fc072271880a13bb412eee27191e8d2f1d0af51daf5d4d55be6f33843f6427a0155e1600d447526147a7647e1c883853e30fe72a57904bd613af16104ff
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