27 lines
1.6 KiB
Plaintext
27 lines
1.6 KiB
Plaintext
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rule TrojanDownloader_O97M_Obfuse_EO{
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meta:
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description = "TrojanDownloader:O97M/Obfuse.EO,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00 "
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strings :
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$a_02_0 = {44 69 6d 20 [0-20] 20 41 73 20 43 75 72 72 65 6e 63 79 } //1
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$a_02_1 = {53 74 72 52 65 76 65 72 73 65 28 53 74 72 52 65 76 65 72 73 65 28 [0-20] 28 } //1
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condition:
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((#a_02_0 & 1)*1+(#a_02_1 & 1)*1) >=2
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}
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rule TrojanDownloader_O97M_Obfuse_EO_2{
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meta:
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description = "TrojanDownloader:O97M/Obfuse.EO,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 06 00 00 "
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strings :
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$a_03_0 = {43 72 65 61 74 65 [0-01] 20 [0-10] 20 2b 20 [0-25] 20 2b 20 } //2
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$a_03_1 = {47 65 74 4f 62 6a 65 63 74 28 [0-10] 20 2b 20 22 53 74 61 22 20 2b 20 22 72 74 75 70 22 29 } //1
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$a_01_2 = {47 65 74 4f 62 6a 65 63 74 28 22 77 69 6e 6d 67 6d 74 73 3a 57 69 6e 33 32 5f 50 72 6f 63 65 73 73 22 20 2b 20 22 53 74 61 22 20 2b 20 22 72 74 75 70 22 29 29 } //1 GetObject("winmgmts:Win32_Process" + "Sta" + "rtup"))
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$a_01_3 = {47 65 74 4f 62 6a 65 63 74 28 22 77 69 6e 6d 22 20 2b 20 22 67 6d 74 73 3a 57 69 6e 33 32 5f 50 72 6f 63 65 73 73 22 20 2b 20 22 53 74 61 22 20 2b 20 22 72 74 75 70 22 29 29 } //1 GetObject("winm" + "gmts:Win32_Process" + "Sta" + "rtup"))
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$a_01_4 = {47 65 74 4f 62 6a 65 63 74 28 22 77 69 6e 6d 22 20 2b 20 22 67 6d 74 73 3a 57 22 20 2b 20 22 69 6e 33 32 5f 50 72 6f 63 65 73 73 22 20 2b 20 22 53 74 61 22 20 2b 20 22 72 74 75 70 22 29 29 } //1 GetObject("winm" + "gmts:W" + "in32_Process" + "Sta" + "rtup"))
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$a_03_5 = {53 68 6f 77 57 69 6e 64 6f 77 20 3d 20 [0-14] 20 } //1
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condition:
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((#a_03_0 & 1)*2+(#a_03_1 & 1)*1+(#a_01_2 & 1)*1+(#a_01_3 & 1)*1+(#a_01_4 & 1)*1+(#a_03_5 & 1)*1) >=4
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} |