32 lines
1.2 KiB
Text
32 lines
1.2 KiB
Text
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import "pe"
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rule MAL_Nitol_Malware_Jan19_1 {
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meta:
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description = "Detects Nitol Malware"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://twitter.com/shotgunner101/status/1084602413691166721"
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date = "2019-01-14"
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hash1 = "fe65f6a79528802cb61effc064476f7b48233fb0f245ddb7de5b7cc8bb45362e"
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id = "5b9968a8-31ba-593b-9e01-b69a4e31fe65"
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strings:
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$xc1 = { 00 25 75 20 25 73 00 00 00 30 2E 30 2E 30 2E 30
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00 25 75 20 4D 42 00 00 00 25 64 2A 25 75 25 73
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00 7E 4D 48 7A }
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$xc2 = "GET ^&&%$%$^" ascii
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$n1 = ".htmGET " ascii
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$s1 = "User-Agent:Mozilla/4.0 (compatible; MSIE %d.00; Windows NT %d.0; MyIE 3.01)" fullword ascii
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$s2 = "User-Agent:Mozilla/4.0 (compatible; MSIE %d.0; Windows NT %d.1; SV1)" fullword ascii
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$s3 = "User-Agent:Mozilla/5.0 (X11; U; Linux i686; en-US; re:1.4.0) Gecko/20080808 Firefox/%d.0" fullword ascii
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$s4 = "User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 1000KB and (
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pe.imphash() == "286870a926664a5129b8b68ed0d4a8eb" or
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1 of ($x*) or
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#n1 > 4 or
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4 of them
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)
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}
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