20 lines
635 B
Text
20 lines
635 B
Text
rule buhtrapknock {
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meta:
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author = "Curt Wilson"
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org = "Arbor Networks ASERT"
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ref = "https://www.arbornetworks.com/blog/asert/diving-buhtrap-banking-trojan-activity/"
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hash = "a0c428ae70bfc7fff66845698fb8ce045bffb3114dde4ea2eac19561a619c6c8"
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desc = "connects to C2 and issues HTTP client request for knock.html"
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strings:
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$s1 = "C:\\Users\\dev\\Documents\\Visual Studio 2015\\Projects\\knock\\Release\\knock.pdb" ascii wide
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$s2 = "User-Agent: Mozilla/5.0 (compatible; MSIE 273.0; Windows NT 6.1; WOW64; Trident/5.0; MASP)" ascii wide
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$s3 = "/knock.html" ascii wide
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condition:
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uint16(0) == 0x5a4d and 2 of ($s*)
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}
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