16 lines
682 B
Plaintext
16 lines
682 B
Plaintext
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rule Backdoor_Win32_Zegost_BY{
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meta:
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description = "Backdoor:Win32/Zegost.BY,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 06 00 00 "
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strings :
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$a_01_0 = {5c 73 79 73 6c 6f 67 2e 64 61 74 } //1 \syslog.dat
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$a_01_1 = {54 61 62 00 43 6c 65 61 72 } //1
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$a_00_2 = {77 69 6e 73 74 61 30 5c 64 65 66 61 75 6c 74 } //1 winsta0\default
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$a_00_3 = {68 74 74 70 2f 31 2e 31 20 34 30 33 20 66 6f 72 62 69 64 64 65 6e } //1 http/1.1 403 forbidden
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$a_00_4 = {25 73 20 73 70 25 64 } //1 %s sp%d
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$a_03_5 = {ff 5c c6 85 ?? ?? ff ff 74 c6 85 ?? ?? ff ff 63 } //1
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condition:
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((#a_01_0 & 1)*1+(#a_01_1 & 1)*1+(#a_00_2 & 1)*1+(#a_00_3 & 1)*1+(#a_00_4 & 1)*1+(#a_03_5 & 1)*1) >=5
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} |