ryuk

General

Target

9eb7abf2228ad28d8b7f571e0495d4a35da40607f04355307077975e271553b8.exe
Size

119KB
Sample

220902-qqp9faghg7
MD5

c68395e474088d5339972e2bf5a30f3c
SHA1

502e42240969399c09337ecc7b5ca8fc1ba4baf3
SHA256

9eb7abf2228ad28d8b7f571e0495d4a35da40607f04355307077975e271553b8
SHA512

5320fe8144071dde940ebd0285e6fcf573d36c28ea51fca3b5aecc49bfe5ffcf25d1afbd294e0d0b565a3a621d5ea189b075d868bbef521f2e1fe6702e8be75a
SSDEEP

1536:j/t3fhrg5rw0lQa2+T37us7RidSkPq9IiJ/EXrAyPca7m94nqHBmQSsWZcdH2kB/:lG55XP0Vq9IiKXrxkKNqHBmEHNVKA

Score

10^/10

Malware Config

Extracted

Path

C:\users\Public\RyukReadMe.html

Family

ryuk

Ransom Note

contact balance of shadow universe Ryuk $password = 'BVb1qR2'; $torlink = 'http://oc6mkf4efqrjp2ue6qp6vmz4ofyjmlo6dtqiklqb2q546bnqeu66tbyd.onion'; function info(){alert("INSTRUCTION:\r\n1. Download tor browser.\r\n2. Open link through tor browser: " + $torlink + "\r\n3. Fill the form, your password: "+ $password +"\r\nWe will contact you shortly.\r\nAlways send files for test decryption.");};

URLs

http://oc6mkf4efqrjp2ue6qp6vmz4ofyjmlo6dtqiklqb2q546bnqeu66tbyd.onion

Targets

- Target
  
  9eb7abf2228ad28d8b7f571e0495d4a35da40607f04355307077975e271553b8.exe
- Size
  
  119KB
- MD5
  
  c68395e474088d5339972e2bf5a30f3c
- SHA1
  
  502e42240969399c09337ecc7b5ca8fc1ba4baf3
- SHA256
  
  9eb7abf2228ad28d8b7f571e0495d4a35da40607f04355307077975e271553b8
- SHA512
  
  5320fe8144071dde940ebd0285e6fcf573d36c28ea51fca3b5aecc49bfe5ffcf25d1afbd294e0d0b565a3a621d5ea189b075d868bbef521f2e1fe6702e8be75a
- SSDEEP
  
  1536:j/t3fhrg5rw0lQa2+T37us7RidSkPq9IiJ/EXrAyPca7m94nqHBmQSsWZcdH2kB/:lG55XP0Vq9IiKXrxkKNqHBmEHNVKA
Score

10^/10

ryuk discovery 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
- Modifies file permissions
  discovery
- Drops desktop.ini file(s)
behavioral1 behavioral2

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

1

T1222

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks

Sharing

General

Malware Config

Extracted

Targets

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Modifies file permissions

Drops desktop.ini file(s)

MITRE ATT&CK Enterprise v6

Tasks

static1

behavioral1

behavioral2