26 lines
2.0 KiB
Plaintext
26 lines
2.0 KiB
Plaintext
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rule TrojanDownloader_O97M_Adnel_J{
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meta:
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description = "TrojanDownloader:O97M/Adnel.J,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00 "
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strings :
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$a_01_0 = {49 66 20 28 31 33 2e 35 20 2b 20 36 34 31 20 2b 20 31 33 2e 35 20 2d 20 36 34 31 20 2b 20 31 33 2e 35 20 2b 20 36 34 31 20 2b 20 31 33 2e 35 20 2d 20 36 34 31 20 2d 20 31 29 20 3d 20 28 31 33 2e 35 20 2b 20 36 34 35 20 2b 20 31 33 2e 35 20 2d 20 36 34 35 20 2b 20 31 33 2e 35 20 2b 20 36 34 35 20 2b 20 31 33 2e 35 20 2d 20 36 34 35 20 2d 20 31 29 20 54 68 65 6e } //1 If (13.5 + 641 + 13.5 - 641 + 13.5 + 641 + 13.5 - 641 - 1) = (13.5 + 645 + 13.5 - 645 + 13.5 + 645 + 13.5 - 645 - 1) Then
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$a_01_1 = {3d 20 31 20 54 6f 20 28 32 35 30 30 20 2b 20 34 31 37 20 2b 20 32 35 30 30 20 2d 20 34 31 37 20 2b 20 32 35 30 30 20 2b 20 34 31 37 20 2b 20 32 35 30 30 20 2d 20 34 31 37 20 2d 20 31 29 } //1 = 1 To (2500 + 417 + 2500 - 417 + 2500 + 417 + 2500 - 417 - 1)
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condition:
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((#a_01_0 & 1)*1+(#a_01_1 & 1)*1) >=2
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}
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rule TrojanDownloader_O97M_Adnel_J_2{
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meta:
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description = "TrojanDownloader:O97M/Adnel.J,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
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strings :
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$a_03_0 = {2e 72 65 61 64 79 53 74 61 74 65 20 3d 20 28 [0-03] 20 2b 20 [0-03] 20 2b 20 [0-03] 20 2d 20 [0-03] 29 20 41 6e 64 20 [0-10] 2e 53 74 61 74 75 73 20 3d 20 28 [0-03] 20 2b 20 [0-03] 20 2b 20 [0-03] 20 2d 20 [0-03] 29 20 54 68 65 6e } //1
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$a_03_1 = {3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 [0-14] 28 43 68 72 24 28 [0-03] 29 20 2b 20 43 68 72 24 28 [0-03] 29 20 2b 20 43 68 72 24 28 [0-03] 29 } //1
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$a_03_2 = {57 69 74 68 20 [0-14] 2e 63 52 65 61 74 65 74 65 58 74 66 49 6c 65 28 } //1
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$a_03_3 = {3d 20 45 6e 76 69 72 6f 6e 28 [0-14] 28 43 68 72 24 28 [0-03] 29 20 2b 20 43 68 72 24 28 [0-03] 29 20 2b 20 43 68 72 24 28 [0-03] 29 20 2b 20 43 68 72 24 28 [0-03] 29 } //1
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$a_03_4 = {43 68 72 24 28 [0-03] 29 20 2b 20 43 68 72 24 28 [0-03] 29 20 2b 20 43 68 72 24 28 [0-03] 29 2c 20 22 [0-14] 22 29 29 2e 52 75 6e } //1
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condition:
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((#a_03_0 & 1)*1+(#a_03_1 & 1)*1+(#a_03_2 & 1)*1+(#a_03_3 & 1)*1+(#a_03_4 & 1)*1) >=5
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} |