17 lines
1.5 KiB
Plaintext
17 lines
1.5 KiB
Plaintext
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rule TrojanDownloader_O97M_Obfuse_AX_MTB{
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meta:
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description = "TrojanDownloader:O97M/Obfuse.AX!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
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strings :
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$a_00_0 = {53 70 6c 69 74 28 61 46 4e 32 42 6c 2c 20 43 68 72 28 31 31 20 2b 20 33 33 29 29 } //1 Split(aFN2Bl, Chr(11 + 33))
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$a_00_1 = {61 44 77 65 4a 2e 53 68 65 6c 6c 45 78 65 63 75 74 65 20 61 49 66 71 6b 2c 20 61 39 38 4e 4c 2c 20 22 20 22 2c 20 53 57 5f 53 48 4f 57 4e 4f 52 4d 41 4c } //1 aDweJ.ShellExecute aIfqk, a98NL, " ", SW_SHOWNORMAL
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$a_00_2 = {22 31 31 30 2c 31 31 35 2c 31 32 33 2c 31 30 33 2c 31 30 30 2c 31 32 31 2c 31 31 30 2c 31 32 31 22 } //1 "110,115,123,103,100,121,110,121"
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$a_00_3 = {22 31 30 34 2c 34 39 2c 38 37 2c 31 32 33 2c 31 32 31 2c 31 30 30 2c 31 30 38 2c 31 32 31 2c 31 30 36 2c 31 30 32 2c 31 31 31 2c 31 30 36 2c 31 32 37 2c 31 30 36 2c 38 37 2c 31 30 36 2c 37 30 2c 31 30 30 2c 31 30 38 2c 39 32 2c 33 37 2c 39 39 2c 31 32 37 2c 31 30 36 22 } //1 "104,49,87,123,121,100,108,121,106,102,111,106,127,106,87,106,70,100,108,92,37,99,127,106"
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$a_00_4 = {43 68 72 28 61 42 4f 59 58 29 } //1 Chr(aBOYX)
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$a_00_5 = {61 67 65 75 30 6f 28 61 37 7a 4d 67 28 61 62 5a 4f 6a 29 20 58 6f 72 20 31 31 29 } //1 ageu0o(a7zMg(abZOj) Xor 11)
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$a_00_6 = {44 69 6d 20 61 44 77 65 4a 20 41 73 20 4e 65 77 20 53 68 65 6c 6c 33 32 2e 53 68 65 6c 6c } //1 Dim aDweJ As New Shell32.Shell
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condition:
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((#a_00_0 & 1)*1+(#a_00_1 & 1)*1+(#a_00_2 & 1)*1+(#a_00_3 & 1)*1+(#a_00_4 & 1)*1+(#a_00_5 & 1)*1+(#a_00_6 & 1)*1) >=7
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} |