ryuk

General

Target

02f95431883571b60ac8aba1827e84e0_JaffaCakes118
Size

5.3MB
Sample

240427-lsyldagf6x
MD5

02f95431883571b60ac8aba1827e84e0
SHA1

24bd00d1ca12306728a7f25b1847c8c10ca65355
SHA256

8742ac94fd7adcb26361b7973f8a66a06968ae04f7d92d4876640d144eb43834
SHA512

05bba479971f7516e72a83fcc2722199724fce42b14268dd43f6c691cb2f857846832b9d2f891a55419eeddce181f7ccda5793ddba45b3cae87061a6444d5b8a
SSDEEP

98304:UxAWvB1FMUPdzjgAOH5XJtAyciIAW8ysGb4E/JOcdLYB27PtiSA1p+gaH:UxPKUPVjPOZUilW8y2E5qC

Score

10^/10

Malware Config

Extracted

Path

C:\users\Public\RyukReadMe.html

Family

ryuk

Ransom Note

nyazanorut1971@protonmail.com balance of shadow universe Ryuk

Emails

nyazanorut1971@protonmail.com

Targets

- Target
  
  02f95431883571b60ac8aba1827e84e0_JaffaCakes118
- Size
  
  5.3MB
- MD5
  
  02f95431883571b60ac8aba1827e84e0
- SHA1
  
  24bd00d1ca12306728a7f25b1847c8c10ca65355
- SHA256
  
  8742ac94fd7adcb26361b7973f8a66a06968ae04f7d92d4876640d144eb43834
- SHA512
  
  05bba479971f7516e72a83fcc2722199724fce42b14268dd43f6c691cb2f857846832b9d2f891a55419eeddce181f7ccda5793ddba45b3cae87061a6444d5b8a
- SSDEEP
  
  98304:UxAWvB1FMUPdzjgAOH5XJtAyciIAW8ysGb4E/JOcdLYB27PtiSA1p+gaH:UxPKUPVjPOZUilW8y2E5qC
Score

10^/10

ryuk dave discovery ransomware vmprotect
- Ryuk
  Ransomware distributed via existing botnets, often Trickbot or Emotet.
  ransomware ryuk
- Renames multiple (187) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Dave packer
  Detects executable using a packer named 'Dave' by the community, based on a string at the end.
  dave
- Executes dropped EXE
- Loads dropped DLL
- Modifies file permissions
  discovery
- VMProtect packed file
  Detects executables packed with VMProtect commercial packer.
  vmprotect
behavioral1 behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

1

T1222

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks

Sharing

General

Malware Config

Extracted

Targets

Renames multiple (187) files with added filename extension

Dave packer

Executes dropped EXE

Loads dropped DLL

Modifies file permissions

VMProtect packed file

MITRE ATT&CK Matrix ATT&CK v13

Tasks

static1

behavioral1

behavioral2