IP Address: 116.66.99.98Previously Malicious

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IP Address:
116.66.99.98​
Previously Malicious

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

Threat Information

Role

Attacker, Scanner

Services Targeted

RDP

Tags

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

Associated Attack Servers

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

Basic Information

IP Address

116.66.99.98

Domain

-

ISP

Shanghai OneTong Com.

Country

China

WHOIS

Created Date

-

Updated Date

-

Organization

-

First seen in Guardicore Centra

2018-03-25

Last seen in Guardicore Centra

2018-12-16

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

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

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 1e100.net: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: 2cacf7a9f1481bac812723e2da165d25ae33c01bd1db6b1d2764b7915cdf8352

6672 bytes

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IP Address: 116.66.99.98​Previously Malicious