Fwd: Current Activities :Targeted attack on FireEye

1 year ago 109

cyber-attack which has resulted in the theft of their red-team /

penetration testing tools.The attack campaign is reportedly attributed to a

highly sophisticated actor employing novel techniques to gain

access.Details of tools stolen in this cyber breach are provided below:-

AdPassHunt:- credential stealer tool that hunts Active Directory

credentials.

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Beacon:- used for several goals, such as persistence, execution, privilege

escalation, credential dumping, lateral movement etc.

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Beltalowda:- used for conducting variety of security-oriented checks on

victim machine.

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Rubeus, Fluffy:- used to Steal or Forge Kerberos Tickets.

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G2JS:- used for automating Microsoft Windows Script Host (WSH) scripts

weaponization.

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InveighZero:- used for man in middle attack like LLMNR/NBT-NS Poisoning and

SMB Relay.

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KeeFarce:- used for extracting password from memory.

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PuppyHound:- used as data collector.

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SafetyKatz:- used for credential dumping.

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Dtrim:- used as credential dumping, Process injection.

SharpZeroLogon:- used the exploit for the Zero logon vulnerability

(CVE-2020-1472) 

NoAmci:- used to bypass AMSI (Windows Antimalware Scan Interface)

detection. 

NetAssemblyInject:- used to inject C# .NET assemblies into arbitrary

Windows process. 

ImpacketObf:- used for working with network protocols. 

In addition to the red-team tools, the leaked list contains payload

exploits leveraging the listed below vulnerabilities:- 

CVE-2014-1812:- Privilege escalation in Microsoft Windows Vista SP2,

Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1,

and Windows Server 2012

CVE-2016-0167:- Privilege escalation in Microsoft Windows

CVE-2017-11774: Remote Code Execution in Microsoft Outlook 

CVE-2018- 13379:- Pre-authorization Arbitrary File Read in Fortigate SSL

VPN 

CVE-2018-15961:- Remote Code Execution in Adobe ColdFusion

CVE-2019-0604:- Remote Code Execution in Microsoft Share point

CVE-2019-0708:- Remote Code Execution in Windows Remote Desktop Services

(RDS)

CVE-2019-11580:- Remote Code Execution in Atlassian Crowd 

CVE-2019-19781:- Remote Code Execution in Citrix Application Delivery

Controller and Citrix Gateway

CVE-2019-3398:- Authenticated Remote Code Execution in Confluence

CVE-2019-8394:- Pre-authorization Arbitrary File Upload in ZoHo Manage

Engine Service Desk Plus

CVE-2020-0688:- Remote Code Execution in Microsoft Exchange

CVE-2020-1472:- Privilege Escalation in Microsoft Active Directory

CVE-2018-8581:- Privilege Escalation in Microsoft Exchange Server

CVE-2020-10189:- Remote Code Execution in ZoHo Manage Engine Desktop

Central

Recommendations and Countermeasures

Assess systems against aforementioned vulnerabilities [using vulnerability

scanning and monitoring tools] and apply appropriate patches / upgrade to

recent stable versions.

FireEye also released a repository of signatures/rules designed to detect

the use of these tools across a variety of detection technologies-

including snort YARA, Open IOCs, ClamAV which could be used for assessing

the compromise system[s]. 

Best practices

Practice good cyber hygiene; backup, update, whitelist applications, limit

privilege, and use multifactor authentication. Routinely audit

configuration and patch management programs

Deploy endpoint security tools on all endpoints; ensure they work and are

up to date. Systems and installed applications being fully patched and

updated

Deploy web and email filters on the network. Configure these devices to

scan for known bad domains, sources, and addresses; block these before

receiving and downloading messages. Scan all emails, attachments, and

downloads both on the host and at the mail gateway with a reputable

antivirus solution

Scan for and remove suspicious e-mail attachments; ensure the scanned

attachment is its "true file type" (i.e., the extension matches the file

header). Block attachments of file types: 

[exe|pif|tmp|url|vb|vbe|scr|reg|cer|pst|cmd|com|bat|dll|dat|hlp|hta|js|wsf]

Exercise caution when using removable media (e.g., USB thumb drives,

external drives, CDs, etc.). Ensure to Scan all software downloaded from

the Internet prior to executing.

Monitor network traffic for unexpected and unapproved protocols, especially

outbound to the internet (e.g., SSH, SMB, RDP).

Restrict execution of PowerShell /WSCRIPT in enterprise environment Ensure

installation and use of latest version of PowerShell, with enhanced logging

enabled. Script block logging, and transcription enabled. Send the

associated logs to a centralized log repository for monitoring and analysis

Enable Exploit Protection [Successor to EMET] that includes several client

side mitigation steps. Detailed configuration steps can be seen in

ft-defender-atp/enable-exploit-protection. Turn on attack surface reduction

rules, including rules that block credential theft, ransomware activity,

and suspicious use of PsExec and WMI.

To address malicious activity initiated through weaponized Office

documents, use rules that block advanced macro activity, executable

content, process creation, and process injection initiated by Office

applications. [To assess the impact of these rules, deploy them in audit

mode.]Turn on AMSI for Office VBA on Office 36

Utilize the Windows Defender Firewall and your network firewall to prevent

RPC and SMB communication among endpoints whenever possible. This limits

lateral movement as well as other attack activities.

References

- -fireeye-red-team-tools.html

- -team-tools

tilized-by-fireeye-red-team-tools

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