Osx.Adware.Pirrit

[Y M <snort () outlook com>]

Hello,


Sorry for the noise [😊] . This one is also a bit old and I did not find existing signatures for it. Like the one 
before, the signatures were derived from the reference article. No pcaps are available.


alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"PUA-ADWARE Osx.Adware.Pirrit outbound connection"; 
flow:to_server,established; content:"GET"; http_method; content:"/engine/getData.php?"; fast_pattern:only; 
content:"type=service"; http_uri; content:"&file="; http_uri; metadata:ruleset community, service http; 
reference:url,objective-see.com/blog/blog_0x0E.html; classtype:trojan-activity; sid:1000844; rev:1;)

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"PUA-ADWARE Osx.Adware.Pirrit outbound connection"; 
flow:to_server,established; content:"GET"; http_method; content:"/cld?mid="; fast_pattern:only; content:"&ct="; 
http_uri; content:"User-Agent|3A 20|curl"; http_header; metadata:ruleset community, service http; 
reference:url,objective-see.com/blog/blog_0x0E.html; classtype:trojan-activity; sid:1000845; rev:1;)

alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"PUA-ADWARE Osx.Adware.Pirrit outbound connection"; 
flow:to_server,established; content:"GET"; http_method; content:"/update-effect?mid="; fast_pattern:only; 
content:"&st="; content:"User-Agent|3A 20|curl"; http_header; metadata:ruleset community, service http; 
reference:url,objective-see.com/blog/blog_0x0E.html; classtype:trojan-activity; sid:1000846; rev:1;)


Thank you.

YM

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