General

  • Target

    https://bazaar.abuse.ch/sample/854f83b6ec1d1aa20a2f68a6c763b529f341c532c1d9e0625088bafc57bab10b/

  • Sample

    240802-x4dacswhjm

Malware Config

Extracted

Family

cobaltstrike

C2

http://57.154.15.121:1314/JYNl

Attributes
  • user_agent

    User-Agent: Mozilla/5.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/5.0)

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___WSPZKR_.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/4029-E2AC-5C06-0098-B547 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/4029-E2AC-5C06-0098-B547 2. http://xpcx6erilkjced3j.19kdeh.top/4029-E2AC-5C06-0098-B547 3. http://xpcx6erilkjced3j.1mpsnr.top/4029-E2AC-5C06-0098-B547 4. http://xpcx6erilkjced3j.18ey8e.top/4029-E2AC-5C06-0098-B547 5. http://xpcx6erilkjced3j.17gcun.top/4029-E2AC-5C06-0098-B547 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs

http://xpcx6erilkjced3j.onion/4029-E2AC-5C06-0098-B547

http://xpcx6erilkjced3j.1n5mod.top/4029-E2AC-5C06-0098-B547

http://xpcx6erilkjced3j.19kdeh.top/4029-E2AC-5C06-0098-B547

http://xpcx6erilkjced3j.1mpsnr.top/4029-E2AC-5C06-0098-B547

http://xpcx6erilkjced3j.18ey8e.top/4029-E2AC-5C06-0098-B547

http://xpcx6erilkjced3j.17gcun.top/4029-E2AC-5C06-0098-B547

Targets

    • Target

      https://bazaar.abuse.ch/sample/854f83b6ec1d1aa20a2f68a6c763b529f341c532c1d9e0625088bafc57bab10b/

    • Cerber

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

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

    • Contacts a large (1172) amount of remote hosts

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

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Checks whether UAC is enabled

    • 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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Discovery

Network Service Discovery

1
T1046

Query Registry

5
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

2
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