IP Address: 23.88.177.110Malicious

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IP Address:
23.88.177.110​
Malicious

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

Threat Information

Role

Attacker

Services Targeted

RDP

Tags

RDP Outgoing Connection Execute from Share Known Malware Post Reboot Rename Service Start DNS Query Download and Execute Access Suspicious Domain Successful RDP Login Service Deletion Service Creation Access Share Morto Service Configuration Service Stop

Connect Back Servers

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

192.168.8.1 192.168.8.5 192.168.8.4 192.168.8.2 192.168.8.3

Basic Information

IP Address

23.88.177.110

Domain

-

ISP

Enzu

Country

United States

WHOIS

Created Date

-

Updated Date

-

Organization

-

First seen in Guardicore Centra

2019-07-07

Last seen in Guardicore Centra

2020-02-22

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: White List

Successful RDP Login

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

Execute from Share

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

Service Creation Service Start

The file C:\WINDOWS\Temp\ntshrui.dll was downloaded and loaded by c:\windows\system32\svchost.exe

Download and Execute

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

Outgoing Connection Access Suspicious Domain DNS Query

Service Ias was stopped

Service Stop

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

DNS Query

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

Service Creation

Process netsvcs Service Group generated outgoing network traffic to: 192.168.8.1:3389, 192.168.8.2:3389, 192.168.8.3:3389, 192.168.8.4:3389, 192.168.8.5:3389 and 74.125.71.104:80

Outgoing Connection

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

Connection was closed due to user inactivity

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IP Address: 23.88.177.110​Malicious