Overview

overview

10

Static

static

8

c7f8289950...28.dll

windows7_x64

10

c7f8289950...28.dll

windows10-2004_x64

5

Sharing

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General

  • Target
    c7f8289950b0d8aa97dceadf2a98aef51886710d56a5283b889c9ad191531028
  • Size 130KB
  • Sample220220-cm2amsfff4
  • SHA256 c7f8289950b0d8aa97dceadf2a98aef51886710d56a5283b889c9ad191531028
  • MD5 SHA1 SHA512
Score
10/10
ryukdavediscoveryransomware

Malware Config

Extracted

Path

  • C:\$Recycle.Bin\RyukReadMe.html

  • 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
      c7f8289950b0d8aa97dceadf2a98aef51886710d56a5283b889c9ad191531028
    • Size 130KB
    • SHA256 c7f8289950b0d8aa97dceadf2a98aef51886710d56a5283b889c9ad191531028
    • MD5 SHA1 SHA512
    Score
    10/10
    ryukdiscoveryransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks