Overview

overview

10

Static

static

9513433ce6...16.exe

windows7_x64

10

9513433ce6...16.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    9513433ce6dbc871cdcca5cfb9be3c3b3f023331553f5b7bb996b47e1c39c316

  • Size

    121KB

  • Sample

    220220-ezz98agfc8

  • MD5

    a846277644734a79f5367050e39508dd

  • SHA1

    cecc43a1fab79846fb2a1790a95ac6a4c5d66579

  • SHA256

    9513433ce6dbc871cdcca5cfb9be3c3b3f023331553f5b7bb996b47e1c39c316

  • SHA512

    92b9a790e192b68afae0a2b5cfd3d29de41fcb4e5f2724f2f468790afce7b95b7ffe8124784f9d3552b97fdf75ff534723bffefe99ccbb6f8fb789bbd46faf47

Score
10/10
ryukdiscoveryransomware

Malware Config

Extracted

Path

C:\users\Public\RyukReadMe.html

Family

ryuk

Ransom Note
contact balance of shadow universe Ryuk 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.");};

Targets

    • Target

      9513433ce6dbc871cdcca5cfb9be3c3b3f023331553f5b7bb996b47e1c39c316

    • Size

      121KB

    • MD5

      a846277644734a79f5367050e39508dd

    • SHA1

      cecc43a1fab79846fb2a1790a95ac6a4c5d66579

    • SHA256

      9513433ce6dbc871cdcca5cfb9be3c3b3f023331553f5b7bb996b47e1c39c316

    • SHA512

      92b9a790e192b68afae0a2b5cfd3d29de41fcb4e5f2724f2f468790afce7b95b7ffe8124784f9d3552b97fdf75ff534723bffefe99ccbb6f8fb789bbd46faf47

    Score
    10/10
    ryukdiscoveryransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Modifies file permissions

      discovery
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Permissions Modification

1
T1222

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks