22 lines
823 B
Text
22 lines
823 B
Text
import "pe"
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rule SUSP_Unsigned_GoogleUpdate {
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meta:
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description = "Detects suspicious unsigned GoogleUpdate.exe"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2019-08-05"
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score = 60
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hash1 = "5aa84aa5c90ec34b7f7d75eb350349ae3aa5060f3ad6dd0520e851626e9f8354"
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id = "2575b882-3526-5c42-9d50-83fb0b7df3f5"
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strings:
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/* OriginalName GoogleUpdate.exe */
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$ac1 = { 00 4F 00 72 00 69 00 67 00 69 00 6E 00 61 00 6C
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00 46 00 69 00 6C 00 65 00 6E 00 61 00 6D 00 65
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00 00 00 47 00 6F 00 6F 00 67 00 6C 00 65 00 55
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00 70 00 64 00 61 00 74 00 65 00 2E 00 65 00 78
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00 65 }
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condition:
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uint16(0) == 0x5a4d and filesize < 2000KB and $ac1
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and pe.number_of_signatures < 1
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}
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