Overview

overview

10

Static

static

1

URLScan

urlscan

https://github.com/p...

windows11-21h2-x64

10

Sharing

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General

  • Target

    https://github.com/pankoza2-pl/malwaredatabase-old/blob/main/Covid29-Ransomware/Covid29%20Ransomware.zip

  • Sample

    240415-yd3yrsgf8t

Score
10/10
chaosbootkitevasionpersistenceransomwarespywarestealertrojanupx

Malware Config

Targets

    • Target

      https://github.com/pankoza2-pl/malwaredatabase-old/blob/main/Covid29-Ransomware/Covid29%20Ransomware.zip

    Score
    10/10
    chaosbootkitevasionpersistenceransomwarespywarestealertrojanupx

    • Chaos

      Ransomware family first seen in June 2021.

      ransomwarechaos

    • Chaos Ransomware

    • UAC bypass

      evasiontrojan

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Disables Task Manager via registry modification

      evasion

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

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

      bootkitpersistence

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Persistence

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

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

3
T1070

File Deletion

3
T1070.004

Modify Registry

3
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

Remote System Discovery

1
T1018

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Exfiltration

Impact

Defacement

1
T1491

Inhibit System Recovery

4
T1490

Tasks