ryuk

General

Target

73dba5d04608fbc2fc53ea986585f0b35bdc24a7bb30c6b43e83a5a9278cd16b
Size

202KB
Sample

220220-gfxq4ahcd7
MD5

c49c19e172c2c6f8390bd26258557b18
SHA1

641d8da9c08060b04fc63b07c61e1c891d5d393a
SHA256

73dba5d04608fbc2fc53ea986585f0b35bdc24a7bb30c6b43e83a5a9278cd16b
SHA512

a66789da1fd31f46f04937ed507662ec0bf68c13f27f1cb0a63ddcc977f33073f3769abdcb4206651781f0e2151c93d7155358367dd1a43d4216200968e220bc

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
  
  73dba5d04608fbc2fc53ea986585f0b35bdc24a7bb30c6b43e83a5a9278cd16b
- Size
  
  202KB
- MD5
  
  c49c19e172c2c6f8390bd26258557b18
- SHA1
  
  641d8da9c08060b04fc63b07c61e1c891d5d393a
- SHA256
  
  73dba5d04608fbc2fc53ea986585f0b35bdc24a7bb30c6b43e83a5a9278cd16b
- SHA512
  
  a66789da1fd31f46f04937ed507662ec0bf68c13f27f1cb0a63ddcc977f33073f3769abdcb4206651781f0e2151c93d7155358367dd1a43d4216200968e220bc
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