rule TrojanDownloader_O97M_Emotet_UW_MTB{ meta: description = "TrojanDownloader:O97M/Emotet.UW!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 05 00 00 " strings : $a_03_0 = {44 6f 20 57 68 69 6c 65 20 [0-40] 2e 20 5f } //1 $a_03_1 = {43 72 65 61 74 65 28 [0-20] 20 26 20 90 05 0f 06 41 2d 5a 61 2d 7a 2c } //1 $a_03_2 = {3d 20 53 70 6c 69 74 28 22 [0-60] 77 [0-60] 22 20 2b 20 6d 61 75 75 77 75 77 75 20 2b 20 63 6b 6c 6f 77 2c 20 69 64 73 66 65 65 65 29 } //1 $a_03_3 = {3d 20 53 70 6c 69 74 28 22 [0-60] 77 [0-70] 22 20 2b 20 63 73 20 2b 20 63 76 2c 20 65 77 61 29 } //1 $a_03_4 = {3d 20 53 70 6c 69 74 28 22 [0-60] 77 [0-70] 22 20 2b 20 64 73 66 65 20 2b 20 76 64 73 2c 20 77 65 66 66 29 } //1 condition: ((#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) >=3 }