16 lines
793 B
Text
16 lines
793 B
Text
rule NK_GOLDBACKDOOR_injected_shellcode
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{
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meta:
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author= "Silas Cutler (silas@Stairwell.com)"
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description = "Detection for injected shellcode that decodes GOLDBACKDOOR"
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reference = "https://stairwell.com/news/threat-research-the-ink-stained-trail-of-goldbackdoor/"
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version = "0.1"
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strings:
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$dec_routine = { 8A 19 57 8B FA 8B 51 01 83 C1 05 85 D2 74 0E 56 8B C1 8B F2 30 18 40 83 EE 01 75 F8 5E 57 }
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$rtlfillmemory_load = {B9 4B 17 CD 5B 55 56 33 ED 55 6A 10 50 E8 86 00 00 00 FF D0}
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$ = "StartModule"
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$log_file_name = {C7 44 24 3C 25 6C 6F 63 50 8D 44 24 40 C7 44 24 44 61 6C 61 70 50 B9 BD 88 17 75 C7 44 24 4C 70 64 61 74 C7 44 24 50 61 25 5C 6C C7 44 24 54 6F 67 5F 67 C7 44 24 58 6F 6C 64 32 C7 44 24 5C 2E 74 78 74}
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$ = { B9 8E 8A DD 8D 8B F0 E8 E9 FB FF FF FF D0 }
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condition:
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3 of them
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}
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