ET WEB_CLIENT Hex Obfuscation of String.fromCharCode %u UTF-8 Encoding

SID: 2012042Rev: 40 views
Sourceet/open
CreatedDecember 11, 2010
UpdatedJuly 26, 2019
Classificationbad-unknown
alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT Hex Obfuscation of String.fromCharCode %u UTF-8 Encoding"; flow:established,to_client; content:"%u53%u74%u72%u69%u6e%u67%u2e%u66%u72%u6f%u6d%u43%u68%u61%u72%u43%u6f%u64%u65"; nocase; reference:url,cansecwest.com/slides07/csw07-nazario.pdf; reference:url,www.sophos.com/security/technical-papers/malware_with_your_mocha.html; classtype:bad-unknown; sid:2012042; rev:4; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_12_11, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2019_07_26;)

References

urlcansecwest.com/slides07/csw07-nazario.pdf
urlwww.sophos.com/security/technical-papers/malware_with_your_mocha.html

Metadata

affected productWeb_Browser_Plugins
attack targetClient_Endpoint
created at2010_12_11
deploymentPerimeter
signature severityMajor
tagWeb_Client_Attacks
updated at2019_07_26

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