IP Address: 223.223.202.83Previously Malicious

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IP Address:
223.223.202.83​
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 Download and Execute Service Deletion DNS Query CMD Service Configuration Malicious File Service Creation Service Start Access Suspicious Domain Service Stop Post Reboot Rename Successful RDP Login Execute from Share Morto Access Share Modification System Shutdown

Associated Attack Servers

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

Basic Information

IP Address

223.223.202.83

Domain

-

ISP

BeiJing guangdianxinchuang communication &

Country

China

WHOIS

Created Date

-

Updated Date

-

Organization

-

First seen in Guardicore Centra

2017-02-17

Last seen in Guardicore Centra

2019-06-16

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

\\TSCLIENT\A\a.dll was identified as malicious by YARA according to rules: Packer, Maldoc Somerules, Peid and Packer Compiler Signatures

Malicious File

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

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

Service Creation

The file C:\WINDOWS\Temp\ntshrui.dll was downloaded and loaded by netsvcs Service Group

Download and Execute

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

DNS Query

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

DNS Query Access Suspicious Domain

Service Ias was stopped

Service Stop

C:\WINDOWS\clb.dll was identified as malicious by YARA according to rules: Packer, Maldoc Somerules, Peid and Packer Compiler Signatures

Malicious File

C:\WINDOWS\Temp\ntshrui.dll was identified as malicious by YARA according to rules: Packer, Maldoc Somerules, Peid and Packer Compiler Signatures

Malicious File

C:\WINDOWS\clb.dllbak was identified as malicious by YARA according to rules: Packer, Maldoc Somerules, Peid and Packer Compiler Signatures

Malicious File

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

Post Reboot Rename

Process netsvcs Service Group generated outgoing network traffic to: 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

Associated Files

C:\WINDOWS\clb.dll

SHA256: 6f272917e98fd8302d6a4e628ed8deb016d1107a8f827846ce8e2af5eee32a27

6672 bytes

C:\WINDOWS\Temp\ntshrui.dll

SHA256: 725405a4613249feac3d117939a6cc0fd0ff97d2ce25e8857c7b2f2000217d00

6672 bytes

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IP Address: 223.223.202.83​Previously Malicious