Overview

overview

10

Static

static

88c513a6ec...c5.exe

windows7_x64

10

88c513a6ec...c5.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    88c513a6ec19c8f34fb699d6c2f46549e0a4c3dedd364b91b801757d7bfe4fc5

  • Size

    190KB

  • Sample

    220220-fkkfwshhem

  • MD5

    e8c26344b4adb62a9a42cf6480c88d05

  • SHA1

    41f926e43e9686382f8c84da42880c47999645fb

  • SHA256

    88c513a6ec19c8f34fb699d6c2f46549e0a4c3dedd364b91b801757d7bfe4fc5

  • SHA512

    287c49f05e2a9928c98986130e875af96d2690097ce00780bbd51034a1a5396c56d20e90ca267f8eb79c440d9b2cbf44e0082910807d934c5edad036d6277d2f

Score
10/10
ryukransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note
<html><body><p style="font-weight:bold;font-size:125%;top:0;left:0;"> [email protected] <br> [email protected] </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�������������������������������������������������������������������������������������������������������������������������������������������������������

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note
[email protected] [email protected] balance of shadow universe Ryuk

Targets

    • Target

      88c513a6ec19c8f34fb699d6c2f46549e0a4c3dedd364b91b801757d7bfe4fc5

    • Size

      190KB

    • MD5

      e8c26344b4adb62a9a42cf6480c88d05

    • SHA1

      41f926e43e9686382f8c84da42880c47999645fb

    • SHA256

      88c513a6ec19c8f34fb699d6c2f46549e0a4c3dedd364b91b801757d7bfe4fc5

    • SHA512

      287c49f05e2a9928c98986130e875af96d2690097ce00780bbd51034a1a5396c56d20e90ca267f8eb79c440d9b2cbf44e0082910807d934c5edad036d6277d2f

    Score
    10/10
    ryukransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Checks computer location settings

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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks