Re: Osx.Trojan.OceanLotus variant

[Phillip Lee <phillile () sourcefire com>]

Yaser,

Thanks for your submission. We will review the rules and get back to you when they're finished. 

Regards,
Phil Lee
Cisco Talos

> On May 1, 2018, at 9:12 AM, Y M via Snort-sigs <snort-sigs () lists snort org> wrote:
>
> Hi,
>
> Below rules are driven from the reference. No pcap is available, so testing was only done for syntax.
>
> # Date: 2018-04-28
> # Title: New MacOS Backdoor Linked to OceanLotus Found
> # Reference: 
> https://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/ 
> <https://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/>, 
> https://www.virustotal.com/#/file/673ee7a57ba3c5a2384aeb17a66058e59f0a4d0cddc4f01fe32f369f6a845c8f/behavior 
> <https://www.virustotal.com/#/file/673ee7a57ba3c5a2384aeb17a66058e59f0a4d0cddc4f01fe32f369f6a845c8f/behavior>
> # Tests: syntax only
>
> # Hashes: 673ee7a57ba3c5a2384aeb17a66058e59f0a4d0cddc4f01fe32f369f6a845c8f, 
> 4da8365241c6b028a13b82d852c4f0155eb3d902782c6a538ac007a44a7d61b4
> alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MALWARE-CNC Osx.Trojan.OceanLotus variant outbound 
> connection"; flow:to_server,established; content:"POST"; http_method; content:"User-Agent: curl/"; fast_pattern:only; 
> http_header; content:".js"; http_uri; pcre:"/\/[a-zA-Z0-9]{10,}\.js/U"; metadata:ruleset community, service http; 
> reference:url,blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/ 
> <http://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/>; 
> classtype:trojan-activity; sid:8000027; rev:1;)
> alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MALWARE-CNC Osx.Trojan.OceanLotus variant outbound 
> connection"; flow:to_server,established; content:"GET"; http_method; content:"User-Agent: curl/"; fast_pattern:only; 
> http_header; content:"Cookie: m_pixel_ratio="; http_header; content:".css"; http_uri; content:!"Connection"; 
> http_header; content:!"Content"; http_header; pcre:"/Cookie\x3a\x20m_pixel_ratio\x3d[a-f0-9]{32}\x3b/H"; 
> metadata:ruleset community, service http; 
> reference:url,blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/ 
> <http://blog.trendmicro.com/trendlabs-security-intelligence/new-macos-backdoor-linked-to-oceanlotus-found/>; 
> classtype:trojan-activity; sid:8000028; rev:1;)
>
> Thanks.
> YM
> _______________________________________________
> Snort-sigs mailing list
> Snort-sigs () lists snort org <mailto:Snort-sigs () lists snort org>
> https://lists.snort.org/mailman/listinfo/snort-sigs <https://lists.snort.org/mailman/listinfo/snort-sigs>
>
> Please visit http://blog.snort.org <http://blog.snort.org/> for the latest news about Snort!
>
> Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette 
> <https://snort.org/faq/what-is-the-mailing-list-etiquette>
>
> Visit the Snort.org <http://snort.org/> to subscribe to the official Snort ruleset, make sure to stay up to date to 
> catch the most <a href=" https://snort.org/downloads/#rule-downloads 
> <https://snort.org/downloads/#rule-downloads>">emerging threats</a>!

_______________________________________________
Snort-sigs mailing list
Snort-sigs () lists snort org
https://lists.snort.org/mailman/listinfo/snort-sigs

Please visit http://blog.snort.org for the latest news about Snort!

Please follow these rules: https://snort.org/faq/what-is-the-mailing-list-etiquette

Visit the Snort.org to subscribe to the official Snort ruleset, make sure to stay up to date to catch the most <a 
href=" https://snort.org/downloads/#rule-downloads";>emerging threats</a>!