Overview

overview

10

Static

static

88b1b49666...35.exe

windows7_x64

10

88b1b49666...35.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335

  • Size

    575KB

  • Sample

    220305-zy55asahgl

  • MD5

    6cad2f7dc809b9353a31753a438aef4e

  • SHA1

    459d816bb020f5da8257076a36d0ffd1f1f02d76

  • SHA256

    88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335

  • SHA512

    a67367990452bf21b7c0d0682c598422c78a5ed455a5d5e684d8fabb43366b0e9f9cd579a5f18123f6b1f97945f789904929838d1d893b70f450bfeafb243bb8

Score
10/10
ryukdiscoveryransomware

Malware Config

Extracted

Path

C:\users\Public\RyukReadMe.html

Family

ryuk

Ransom Note
<html><body><p style="font-weight:bold;font-size:125%;top:0;left:0;"> naebrahedin1986@protonmail.com <br> </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�
Emails

naebrahedin1986@protonmail.com

Extracted

Path

C:\$Recycle.Bin\RyukReadMe.html

Family

ryuk

Ransom Note
naebrahedin1986@protonmail.com balance of shadow universe Ryuk
Emails

naebrahedin1986@protonmail.com

Targets

    • Target

      88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335

    • Size

      575KB

    • MD5

      6cad2f7dc809b9353a31753a438aef4e

    • SHA1

      459d816bb020f5da8257076a36d0ffd1f1f02d76

    • SHA256

      88b1b4966650de59cef20c340b28739c52dc9ead91d9959a338a8e531ad38335

    • SHA512

      a67367990452bf21b7c0d0682c598422c78a5ed455a5d5e684d8fabb43366b0e9f9cd579a5f18123f6b1f97945f789904929838d1d893b70f450bfeafb243bb8

    Score
    10/10
    ryukdiscoveryransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • 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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks