Snort mailing list archives

Re: Win.Trojan.Kwampirs


From: Phillip Lee <phillile () sourcefire com>
Date: Fri, 27 Apr 2018 11:01:40 -0400

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 Apr 27, 2018, at 10:25 AM, Y M via Snort-sigs <snort-sigs () lists snort org> wrote:

Hi,

These are pretty weak signatures, there is little information to go by. No pcaps available.

# Title: New Orangeworm attack group targets the healthcare sector in the U.S., Europe, and Asia
# Reference: https://www.symantec.com/blogs/threat-intelligence/orangeworm-targets-healthcare-us-europe-asia 
<https://www.symantec.com/blogs/threat-intelligence/orangeworm-targets-healthcare-us-europe-asia>, 
https://content.connect.symantec.com/sites/default/files/2018-04/Orangeworm%20IOCs.pdf 
<https://content.connect.symantec.com/sites/default/files/2018-04/Orangeworm%20IOCs.pdf>

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MALWARE-CNC Win.Trojan.Kwampirs outbound connection 
attempt"; flow:to_server,established; content:"?q=kt"; fast_pattern:only; http_uri; 
pcre:"/\.(php|asp)\x3fq\x3dkt.*\x3d\x3d/U"; metadata:ruleset community, service http; 
reference:url,www.symantec.com/blogs/threat-intelligence/orangeworm-targets-healthcare-us-europe-asia 
<http://www.symantec.com/blogs/threat-intelligence/orangeworm-targets-healthcare-us-europe-asia>; 
reference:url,content.connect.symantec.com/sites/default/files/2018-04/Orangeworm%20IOCs.pdf 
<http://content.connect.symantec.com/sites/default/files/2018-04/Orangeworm%20IOCs.pdf>; classtype:trojan-activity; 
sid:8000020; rev:1;)
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"MALWARE-CNC Win.Trojan.Kwampirs outbound connection 
attempt"; flow:to_server,established; content:"?q=KT"; fast_pattern:only; http_uri; 
pcre:"/\.(php|asp)\x3fq\x3dKT.*\x3d\x3d/U"; metadata:ruleset community, service http; 
reference:url,www.symantec.com/blogs/threat-intelligence/orangeworm-targets-healthcare-us-europe-asia 
<http://www.symantec.com/blogs/threat-intelligence/orangeworm-targets-healthcare-us-europe-asia>; 
reference:url,content.connect.symantec.com/sites/default/files/2018-04/Orangeworm%20IOCs.pdf 
<http://content.connect.symantec.com/sites/default/files/2018-04/Orangeworm%20IOCs.pdf>; classtype:trojan-activity; 
sid:8000021; rev:1;)

Thanks.
YM
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