ryuk

General

Target

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2
Size

196KB
Sample

220220-depgjshabn
MD5

35fb90e465df48871ee78df492fe22de
SHA1

ddfba2e525968f6aedf050613f32b124b13f776a
SHA256

b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2
SHA512

60511d000df87164627fb6053049e82be0833e60a8b8a7ae30e93084e4293e250f1a7b2a4eaf3d875408a304e845ae548ff2cd68d6f604090cdc5be3d168d5f7

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\RyukReadMe.html

Family

ryuk

Ransom Note

[email protected] balance of shadow universe Ryuk

Emails

[email protected]

Targets

- Target
  
  b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2
- Size
  
  196KB
- MD5
  
  35fb90e465df48871ee78df492fe22de
- SHA1
  
  ddfba2e525968f6aedf050613f32b124b13f776a
- SHA256
  
  b6a77965f94dfc6f0ed0a3465e8d17e998328a9659ef860fbe2396bb0014f8a2
- SHA512
  
  60511d000df87164627fb6053049e82be0833e60a8b8a7ae30e93084e4293e250f1a7b2a4eaf3d875408a304e845ae548ff2cd68d6f604090cdc5be3d168d5f7
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