IP Address: Malicious

Weekly Summary

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Top Threats

Cyber Threat Intelligence

Discover Malicious IPs and Domains with Guardicore Cyber Threat Feed

IP Address:​
Previously Malicious

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

Threat Information



Services Targeted



HTTP Outgoing Connection Malicious File Access Suspicious Domain Listening Service Stop Service Deletion Persistency - Logon Download File Service Creation Download and Execute SMB Null Session Login MSRPC Service Start DNS Query SMB Share Connect Successful SMB Login SMB

Connect Back Servers

lstn.net hnpt.com.vn nns.ne.jp pldt.net vdrs.net

Basic Information

IP Address




Fars Province University of Medical Science and He


Iran, Islamic Republic of


Created Date


Updated Date




First seen in Guardicore Centra


Last seen in Guardicore Centra


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 SMB from ME41 with the following username: administrator - Authentication policy: Correct Password

Successful SMB Login

c:\windows\stm8.inf was downloaded

Download File

c:\windows\isass.exe was identified as malicious by YARA according to rules: Rat Ratdecoders, Packer Compiler Signatures, Antidebug Antivm Index, Packers Index, Antidebug Antivm, Packer, Peid and Malw Pe Sections

Malicious File

c:\windows\system32\services.exe installed and started c:\windows\isass.exe as a service named wgautr

Service Start Service Creation

The file c:\windows\isass.exe was downloaded and executed

Download and Execute

Process c:\windows\isass.exe attempted to access domains: gmail.com

DNS Query

Process c:\windows\isass.exe started listening on port 53


c:\windows\isass.exe set the command line c:\windows\Isass.exe %1 to run using Persistency - Logon

Persistency - Logon

Process c:\windows\isass.exe generated outgoing network traffic to:, hnpt.com.vn:53, vdrs.net:443,,, lstn.net:53,,, pldt.net:53 and nns.ne.jp:53

Outgoing Connection

Process c:\windows\isass.exe attempted to access suspicious domains: pldt.net, vdrs.net and hnpt.com.vn

Access Suspicious Domain

Service wgautr was stopped

Service Stop

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IP Address:​Previously Malicious