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Overview

overview

10

Static

static

e63a0fdaaa...5a.exe

windows7_x64

10

e63a0fdaaa...5a.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a

  • Size

    190KB

  • Sample

    220220-bbfn5agaep

  • MD5

    fb0cc68e9679d61aa39779cabc5e6196

  • SHA1

    fe91a5a32aa26e92925426b88f810b215610d8b4

  • SHA256

    e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a

  • SHA512

    12ae1da23953ba65108aa2358942a77c442e57580fde053b435569d7ac15af6b077a8febf4d2d36489ca4aae130e6a737d4ff2e60f0aebecc9fe491f4614b54e

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

      e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a

    • Size

      190KB

    • MD5

      fb0cc68e9679d61aa39779cabc5e6196

    • SHA1

      fe91a5a32aa26e92925426b88f810b215610d8b4

    • SHA256

      e63a0fdaaaf0aa3363522e1db78c9f06babb6cfb452aa8cd139aee77e8cbc15a

    • SHA512

      12ae1da23953ba65108aa2358942a77c442e57580fde053b435569d7ac15af6b077a8febf4d2d36489ca4aae130e6a737d4ff2e60f0aebecc9fe491f4614b54e

    Score
    10/10
    ryukransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks