15 lines
893 B
Plaintext
15 lines
893 B
Plaintext
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rule TrojanDownloader_O97M_Obfuse_TB_MTB{
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meta:
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description = "TrojanDownloader:O97M/Obfuse.TB!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
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strings :
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$a_00_0 = {53 75 62 20 41 75 74 6f 5f 4f 70 65 6e 28 29 } //1 Sub Auto_Open()
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$a_00_1 = {22 70 6f 77 65 72 73 68 65 6c 6c 2e 65 78 65 20 22 22 49 45 58 20 28 28 6e 65 77 2d 6f 62 6a 65 63 74 20 6e 65 74 2e 77 65 62 63 6c 69 65 6e 74 29 } //1 "powershell.exe ""IEX ((new-object net.webclient)
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$a_00_2 = {2e 64 6f 77 6e 6c 6f 61 64 73 74 72 69 6e 67 28 27 68 74 74 70 3a 2f 2f } //1 .downloadstring('http://
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$a_00_3 = {31 38 2e 31 34 31 2e 32 30 30 2e 39 35 2f 69 6d 67 2f 70 61 79 6c 6f 61 64 2e 74 78 74 } //1 18.141.200.95/img/payload.txt
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$a_00_4 = {53 68 65 6c 6c 20 28 65 78 65 63 29 } //1 Shell (exec)
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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) >=5
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} |