18 lines
1.3 KiB
Plaintext
18 lines
1.3 KiB
Plaintext
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rule TrojanDownloader_O97M_TrickBot_B_MTB{
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meta:
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description = "TrojanDownloader:O97M/TrickBot.B!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,08 00 08 00 08 00 00 "
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strings :
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$a_01_0 = {23 49 66 20 56 42 41 37 20 54 68 65 6e } //1 #If VBA7 Then
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$a_03_1 = {44 65 63 6c 61 72 65 20 50 74 72 53 61 66 65 20 46 75 6e 63 74 69 6f 6e 20 41 63 74 69 76 61 74 65 4b 65 79 62 6f 61 72 64 4c 61 79 6f 75 74 20 4c 69 62 20 22 75 73 65 72 33 32 22 20 28 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 2c 20 42 79 56 61 6c 20 66 6c 61 67 73 20 41 73 20 4c 6f 6e 67 50 74 72 29 20 41 73 20 4c 6f 6e 67 50 74 72 } //1
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$a_01_2 = {2a 20 53 69 6e 28 30 20 2b 20 30 20 2a 20 54 29 } //1 * Sin(0 + 0 * T)
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$a_03_3 = {2a 20 43 6f 73 28 [0-10] 20 2a 20 54 29 } //1
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$a_03_4 = {53 70 61 63 65 24 28 73 6c 65 6e 29 [0-10] 44 69 6d } //1
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$a_03_5 = {4d 69 64 24 28 72 65 73 2c 20 69 2c 20 31 29 20 3d 20 4d 69 64 24 28 73 72 63 2c 20 69 20 2a 20 [0-03] 2c 20 31 29 [0-10] 4e 65 78 74 } //1
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$a_03_6 = {2e 54 61 67 20 46 6f 72 20 42 69 6e 61 72 79 20 41 73 20 23 [0-10] 50 75 74 20 23 31 2c } //1
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$a_03_7 = {2e 43 61 70 74 69 6f 6e [0-15] 4e 65 78 74 [0-10] 45 6e 64 20 49 66 } //1
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condition:
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((#a_01_0 & 1)*1+(#a_03_1 & 1)*1+(#a_01_2 & 1)*1+(#a_03_3 & 1)*1+(#a_03_4 & 1)*1+(#a_03_5 & 1)*1+(#a_03_6 & 1)*1+(#a_03_7 & 1)*1) >=8
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} |