47 lines
1.9 KiB
Text
47 lines
1.9 KiB
Text
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/*
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Copyright
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=========
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Copyright (C) 2013 Trustwave Holdings, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>
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---------
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This YARA signature will attempt to detect instances of the newly discovered
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Apache iFrame injection module. Please take a minute to look at the references
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contained in the metadata section of the rule for further information.
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This signature attempts to identify the unique XTEA function used for config
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decryption. Additionally, it will attempt to identify the XTEA keys discovered
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in the samples already encountered by SpiderLabs.
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*/
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rule apacheInjectionXtea {
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meta:
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description = "Detection for new Apache injection module spotted in wild."
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in_the_wild = true
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reference1 = "http://blog.sucuri.net/2013/06/new-apache-module-injection.html"
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reference2 = "TBD"
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strings:
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$xteaFunction = { 8B 0F 8B 57 04 B8 F3 3A 62 CC 41 89 C0 41 89 C9 41 89 CA 41 C1 E8 0B 41 C1 E2 04 41 C1 E9 05 41 83 E0 03 45 31 D1 46 8B 04 86 41 01 C9 41 01 C0 05 47 86 C8 61 45 31 C8 44 29 C2 49 89 C0 41 83 E0 03 41 89 D1 41 89 D2 46 8B 04 86 41 C1 E9 05 41 C1 E2 04 45 31 D1 41 01 D1 41 01 C0 45 31 C8 44 29 C1 85 C0 75 A3 89 0F 89 57 04 C3 }
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$xteaKey1 = { 4A F5 5E 5E B9 8A E1 63 30 16 B6 15 23 51 66 03 }
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$xteaKey2 = { 68 2C 16 4A 30 A8 14 1F 1E AD 0D 24 E1 0E 10 01 }
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condition:
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$xteaFunction or any of ($xteaKey*)
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}
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