Overview

overview

10

Static

static

2a97228a72...12.exe

windows7_x64

10

2a97228a72...12.exe

windows10-2004_x64

8

Sharing

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General

  • Target

    2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

  • Size

    193KB

  • Sample

    220220-ky7kssagc7

  • MD5

    cfb761465693bd4511f038d8e468e62e

  • SHA1

    c8d64b3d2208a3cf40f4d9c182c9829beaa1eb86

  • SHA256

    2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

  • SHA512

    2622751f9f5ab89287a1d88c9f027a7117549fcd0280f104a598c7953713d32e6ce5adfdd26abec709e1c848b8bc9f50e5226185721a22d2b3573d2d0264d36c

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> </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] balance of shadow universe Ryuk

Targets

    • Target

      2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

    • Size

      193KB

    • MD5

      cfb761465693bd4511f038d8e468e62e

    • SHA1

      c8d64b3d2208a3cf40f4d9c182c9829beaa1eb86

    • SHA256

      2a97228a72f59f4a7095efcadf5adf6d2f6365e094b7c3de34348ab38a3e9912

    • SHA512

      2622751f9f5ab89287a1d88c9f027a7117549fcd0280f104a598c7953713d32e6ce5adfdd26abec709e1c848b8bc9f50e5226185721a22d2b3573d2d0264d36c

    Score
    10/10
    ryukransomware

    • 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

    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