Overview

overview

10

Static

static

1

URLScan

urlscan

https://github.com/t...

windows11-21h2-x64

10

Resubmissions

21/05/2024, 19:57

240521-ypbcwsgg7x 10

21/05/2024, 16:17

240521-trkxwsbf3v 10

21/05/2024, 14:21

240521-rn7w5sha41 10

20/05/2024, 11:20

240520-nfmdpahb49 10

19/05/2024, 06:44

240519-hhgckaeh71 10

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General

  • Target

    https://github.com/theevilteam/KILLER-CLOWN-extracted/raw/main/3MB%20Online%20Install.exe

  • Sample

    240520-nfmdpahb49

Score
10/10
bootkitdefense_evasionevasionexecutionimpactpersistencepyinstallerransomwaretrojan

Malware Config

Targets

    • Target

      https://github.com/theevilteam/KILLER-CLOWN-extracted/raw/main/3MB%20Online%20Install.exe

    Score
    10/10
    bootkitdefense_evasionevasionexecutionimpactpersistencepyinstallerransomwaretrojan

    • Modifies WinLogon for persistence

      persistence

    • UAC bypass

      evasiontrojan

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Installed Components in the registry

      persistence

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

      persistence

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware

    • Suspicious use of SetThreadContext

    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Scheduled Task/Job

1
T1053

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Winlogon Helper DLL

1
T1547.004

Event Triggered Execution

1
T1546

Change Default File Association

1
T1546.001

Scheduled Task/Job

1
T1053

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

1
T1562

Disable or Modify Tools

1
T1562.001

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

8
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

1
T1490

Tasks