Overview

overview

10

Static

static

0acb78ccdd...ad.exe

windows7_x64

10

0acb78ccdd...ad.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    0acb78ccddd5b957983294ce68aa5526b7b703c8d047bb25fcbd7692d8679dad

  • Size

    207KB

  • Sample

    220219-kbw6jsahbl

  • MD5

    36dfbe051ab87906b8de92085335bddb

  • SHA1

    932d13cc4f14f33825d236cb7ed8c50314f73365

  • SHA256

    0acb78ccddd5b957983294ce68aa5526b7b703c8d047bb25fcbd7692d8679dad

  • SHA512

    3ad79c11e252513f651c2aa066668aeb263e51643eaa15766853ae764b2fd2b65f9f631b9e701c9b1c4f05232e9b87b3cc33d84fec4930f523c45a411356eb21

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:\Documents and Settings\Admin\AppData\Local\RyukReadMe.html

Family

ryuk

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

Targets

    • Target

      0acb78ccddd5b957983294ce68aa5526b7b703c8d047bb25fcbd7692d8679dad

    • Size

      207KB

    • MD5

      36dfbe051ab87906b8de92085335bddb

    • SHA1

      932d13cc4f14f33825d236cb7ed8c50314f73365

    • SHA256

      0acb78ccddd5b957983294ce68aa5526b7b703c8d047bb25fcbd7692d8679dad

    • SHA512

      3ad79c11e252513f651c2aa066668aeb263e51643eaa15766853ae764b2fd2b65f9f631b9e701c9b1c4f05232e9b87b3cc33d84fec4930f523c45a411356eb21

    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.

    • Drops desktop.ini file(s)

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3
T1012

System Information Discovery

4
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks