17 lines
1.1 KiB
Plaintext
17 lines
1.1 KiB
Plaintext
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rule TrojanDownloader_O97M_Obfuse_RY_MTB{
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meta:
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description = "TrojanDownloader:O97M/Obfuse.RY!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
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strings :
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$a_01_0 = {3d 20 49 73 41 72 72 61 79 28 22 22 29 } //1 = IsArray("")
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$a_03_1 = {3d 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e 46 69 65 6c 64 73 2e 49 74 65 6d 28 [0-03] 29 2e 4f 4c 45 46 6f 72 6d 61 74 2e 4f 62 6a 65 63 74 2e 47 72 6f 75 70 4e 61 6d 65 } //1
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$a_03_2 = {2e 49 74 65 6d 28 29 2e 44 6f 63 75 6d 65 6e 74 2e 41 70 70 6c 69 63 61 74 69 6f 6e 2e 53 68 65 6c 6c 45 78 65 63 75 74 65 20 [0-20] 2c } //1
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$a_01_3 = {22 43 3a 5c 57 69 6e 64 6f 77 73 5c 53 79 73 74 65 6d 33 32 22 2c 20 4e 75 6c 6c 2c 20 30 20 2a 20 31 } //1 "C:\Windows\System32", Null, 0 * 1
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$a_03_4 = {3d 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e 50 61 72 61 67 72 61 70 68 73 28 [0-10] 29 2e 52 61 6e 67 65 2e 54 65 78 74 } //1
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$a_01_5 = {3d 20 22 22 } //1 = ""
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$a_01_6 = {26 20 22 37 } //1 & "7
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condition:
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((#a_01_0 & 1)*1+(#a_03_1 & 1)*1+(#a_03_2 & 1)*1+(#a_01_3 & 1)*1+(#a_03_4 & 1)*1+(#a_01_5 & 1)*1+(#a_01_6 & 1)*1) >=7
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} |