IP Address: 1.214.151.94Malicious

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IP Address:
1.214.151.94​
Malicious

This IP address attempted an attack on a machine protected by Guardicore Centra

Threat Information

Role

Attacker, Scanner

Services Targeted

RDP

Tags

Service Start System Shutdown Port 3389 Scan RDP Brute Force Service Configuration Execute from Share Service Stop DNS Query Access Share Successful RDP Login Download and Execute Post Reboot Rename Service Creation Known Malware Service Deletion RDP Access Suspicious Domain System File Modification Morto

Associated Attack Servers

dos1.jifr.net ss.jifr.net ms.jifr.info flt1.jifr.net ms.jifr.net ms.jifr.co.cc ms.jifr.co.be

Basic Information

IP Address

1.214.151.94

Domain

-

ISP

LG DACOM Corporation

Country

Korea, Republic of

WHOIS

Created Date

-

Updated Date

-

Organization

-

First seen in Guardicore Centra

2019-04-14

Last seen in Guardicore Centra

2020-07-11

What is Guardicore Centra
Guardicore Centra is a data center and cloud security solution that protects the organization's core assets, using flexible, quickly deployed and easy to understand micro-segmentation controls. Centra generates in-context security incidents, with details on attacker tools and techniques, that help IR teams prioritize incident investigation and reduce dwell time. Learn More

Attack Flow

A user logged in using RDP with the following credentials: administrator / ******** - Authentication policy: Correct Password (Part of a Brute Force Attempt)

Successful RDP Login RDP Brute Force

a.dll was loaded from the remote share \\tsclient\a by c:\windows\system32\rundll32.exe

Execute from Share

The file C:\WINDOWS\clb.dll was downloaded and loaded by c:\windows\regedit.exe

Download and Execute

c:\windows\regedit.exe installed and started c:\windows\temp\ntshrui.dll as a service named Ias under service group netsvcs

Service Start Service Creation

Process netsvcs Service Group attempted to access suspicious domains: dos1.jifr.net, flt1.jifr.net, ms.jifr.co.be, ms.jifr.info, ms.jifr.net and ss.jifr.net

Access Suspicious Domain DNS Query

Service Ias was stopped

Service Stop

System file c:\windows\clb.dllbak was modified 25 times

System File Modification

c:\windows\regedit.exe installed c:\windows\system32\sens32.dll as a service named SENS under service group netsvcs

Service Creation

c:\windows\offline web pages\cache.txt was renamed to c:\windows\system32\sens32.dll by c:\windows\system32\svchost.exe ( pending reboot )

Post Reboot Rename

Process netsvcs Service Group attempted to access domains: ms.jifr.co.cc

DNS Query

Process netsvcs Service Group generated outgoing network traffic to: 192.168.8.10:3389, 192.168.8.11:3389, 192.168.8.12:3389, 192.168.8.13:3389, 192.168.8.14:3389, 192.168.8.15:3389, 192.168.8.16:3389, 192.168.8.17:3389, 192.168.8.18:3389, 192.168.8.19:3389, 192.168.8.1:3389, 192.168.8.20:3389, 192.168.8.21:3389, 192.168.8.22:3389, 192.168.8.23:3389, 192.168.8.24:3389, 192.168.8.25:3389, 192.168.8.26:3389, 192.168.8.27:3389, 192.168.8.2:3389, 192.168.8.3:3389, 192.168.8.4:3389, 192.168.8.5:3389, 192.168.8.6:3389, 192.168.8.7:3389, 192.168.8.8:3389, 192.168.8.9:3389 and 74.125.71.104:80

c:\windows\system32\rundll32.exe attempted shutdown of type Shut down all processes running in the logon session of the process with reason: Unspecified

System Shutdown

Process netsvcs Service Group scanned port 3389 on 27 IP Addresses

Port 3389 Scan

Connection was closed due to user inactivity

Associated Files

C:\WINDOWS\Temp\ntshrui.dll

SHA256: de69d024f4033bb9c31ab8b54b551f5ed1ac6ec985f1b404dfb4af7adf626dc1

6672 bytes

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IP Address: 1.214.151.94​Malicious