ryuk

General

Target

9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f
Size

112KB
Sample

220220-erecsaged8
MD5

990b689516914e33319296bf038b8d45
SHA1

c0de363450821deb850bed1a2b6880d84bd9ec3b
SHA256

9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f
SHA512

e0d42a48a286aa21415e3d5b1e6a4ce0f2947eb0b1de6b73fd13fbd450e141975d05e00a4c332349039f41fb2d71807d9242118b6c0c69392ff9bd0aa062085d

Score

10^/10

Malware Config

Extracted

Path

C:\users\Public\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\Public\RyukReadMe.html

Family

ryuk

Ransom Note

[email protected] balance of shadow universe Ryuk

Emails

[email protected]

Targets

- Target
  
  9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f
- Size
  
  112KB
- MD5
  
  990b689516914e33319296bf038b8d45
- SHA1
  
  c0de363450821deb850bed1a2b6880d84bd9ec3b
- SHA256
  
  9a8f9a28040bf69a7179de263382b29d1b6da12efc330ada1f983e9fe9b56c7f
- SHA512
  
  e0d42a48a286aa21415e3d5b1e6a4ce0f2947eb0b1de6b73fd13fbd450e141975d05e00a4c332349039f41fb2d71807d9242118b6c0c69392ff9bd0aa062085d
Score

10^/10

ryuk discovery 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
- Loads dropped DLL
- Modifies file permissions
  discovery
behavioral1 behavioral2