General

  • Target

    https://github.com/Endermanch/MalwareDatabase/tree/master/trojans

  • Sample

    240802-tqslcawaje

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___RSX0H_.txt

Family

cerber

Ransom Note
Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only one way to decrypt your files is to receive the private key and decryption program. To receive the private key and decryption program go to any decrypted folder, inside there is the special file (*_R_E_A_D___T_H_I_S_*) with complete instructions how to decrypt your files. If you cannot find any (*_R_E_A_D___T_H_I_S_*) file at your PC, follow the instructions below: ----- 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://xpcx6erilkjced3j.onion/F426-7A9C-B4FB-0098-B83F Note! This page is available via "Tor Browser" only. ----- Also you can use temporary addresses on your personal page without using "Tor Browser". ----- 1. http://xpcx6erilkjced3j.1n5mod.top/F426-7A9C-B4FB-0098-B83F 2. http://xpcx6erilkjced3j.19kdeh.top/F426-7A9C-B4FB-0098-B83F 3. http://xpcx6erilkjced3j.1mpsnr.top/F426-7A9C-B4FB-0098-B83F 4. http://xpcx6erilkjced3j.18ey8e.top/F426-7A9C-B4FB-0098-B83F 5. http://xpcx6erilkjced3j.17gcun.top/F426-7A9C-B4FB-0098-B83F ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/F426-7A9C-B4FB-0098-B83F

http://xpcx6erilkjced3j.1n5mod.top/F426-7A9C-B4FB-0098-B83F

http://xpcx6erilkjced3j.19kdeh.top/F426-7A9C-B4FB-0098-B83F

http://xpcx6erilkjced3j.1mpsnr.top/F426-7A9C-B4FB-0098-B83F

http://xpcx6erilkjced3j.18ey8e.top/F426-7A9C-B4FB-0098-B83F

http://xpcx6erilkjced3j.17gcun.top/F426-7A9C-B4FB-0098-B83F

Targets

    • Target

      https://github.com/Endermanch/MalwareDatabase/tree/master/trojans

    • Cerber

      Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

    • Modifies WinLogon for persistence

    • UAC bypass

    • Contacts a large (1109) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Drops startup file

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • 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

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

3
T1546

Change Default File Association

1
T1546.001

Netsh Helper DLL

1
T1546.007

Component Object Model Hijacking

1
T1546.015

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

3
T1546

Change Default File Association

1
T1546.001

Netsh Helper DLL

1
T1546.007

Component Object Model Hijacking

1
T1546.015

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

6
T1112

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Impair Defenses

2
T1562

Disable or Modify Tools

1
T1562.001

Disable or Modify System Firewall

1
T1562.004

Discovery

Network Service Discovery

1
T1046

Query Registry

6
T1012

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Browser Information Discovery

1
T1217

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Remote System Discovery

1
T1018

Command and Control

Web Service

1
T1102

Impact

Defacement

1
T1491

Tasks