Overview

overview

10

Static

static

9f8bea9fe7...1a.exe

windows7_x64

10

9f8bea9fe7...1a.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    9f8bea9fe7c238d34e4c1e1e47e4d57631b813ab7bfea50db52b229110c6a61a

  • Size

    444KB

  • Sample

    220305-sprrzsgeh4

  • MD5

    1fe2b06f573c1809a79c14da0f26f605

  • SHA1

    dc137d2c45d47d62449860f76f57dd85d34d122e

  • SHA256

    9f8bea9fe7c238d34e4c1e1e47e4d57631b813ab7bfea50db52b229110c6a61a

  • SHA512

    10070abdc4320702b3a76b229a41dc2118ec5bc42af488c5db7d3381f43f38b40f47a7b624ac623c0f8da76e5bb6f7922668ae2af6a1af8c464b82836b6c7ca1

Score
10/10
ryukdiscoveryransomware

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;"> anylcoheal1986@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

anylcoheal1986@protonmail.com

Extracted

Path

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

Family

ryuk

Ransom Note
anylcoheal1986@protonmail.com balance of shadow universe Ryuk
Emails

anylcoheal1986@protonmail.com

Targets

    • Target

      9f8bea9fe7c238d34e4c1e1e47e4d57631b813ab7bfea50db52b229110c6a61a

    • Size

      444KB

    • MD5

      1fe2b06f573c1809a79c14da0f26f605

    • SHA1

      dc137d2c45d47d62449860f76f57dd85d34d122e

    • SHA256

      9f8bea9fe7c238d34e4c1e1e47e4d57631b813ab7bfea50db52b229110c6a61a

    • SHA512

      10070abdc4320702b3a76b229a41dc2118ec5bc42af488c5db7d3381f43f38b40f47a7b624ac623c0f8da76e5bb6f7922668ae2af6a1af8c464b82836b6c7ca1

    Score
    10/10
    ryukdiscoveryransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

File Permissions Modification

1
T1222

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Tasks