ryuk

General

Target

f270d56ba05344b7c1d3bdf0afbe8e0bbf3cc7fee569ccfdbb1fa1294b2e85d0
Size

113KB
Sample

220220-aqd86sehd8
MD5

8c7e7e483cd51fd209709cadcb982bcb
SHA1

fcce16c3e4906feec110e93fdf75f8a12b86cad8
SHA256

f270d56ba05344b7c1d3bdf0afbe8e0bbf3cc7fee569ccfdbb1fa1294b2e85d0
SHA512

32d6e10d6de35703adc71c17dc1a3722781210edd897f20a7be8eed1e39b8613f105ae86213bc0496167406cfdb4debeaceb1c87336b08894cf409795583f69b

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]

Targets

- Target
  
  f270d56ba05344b7c1d3bdf0afbe8e0bbf3cc7fee569ccfdbb1fa1294b2e85d0
- Size
  
  113KB
- MD5
  
  8c7e7e483cd51fd209709cadcb982bcb
- SHA1
  
  fcce16c3e4906feec110e93fdf75f8a12b86cad8
- SHA256
  
  f270d56ba05344b7c1d3bdf0afbe8e0bbf3cc7fee569ccfdbb1fa1294b2e85d0
- SHA512
  
  32d6e10d6de35703adc71c17dc1a3722781210edd897f20a7be8eed1e39b8613f105ae86213bc0496167406cfdb4debeaceb1c87336b08894cf409795583f69b
Score

10^/10

ryuk discovery persistence ransomware
- Ryuk
  Ransomware distributed via existing botnets, often Trickbot or Emotet.
  ransomware ryuk
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Executes dropped EXE
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL
- Modifies file permissions
  discovery
- Adds Run key to start application
  persistence
behavioral1 behavioral2