From ee4ab682cf63467aaf91c1c00bfeeaaa1657217c Mon Sep 17 00:00:00 2001
From: Benjamin DELPY <benjamin@gentilkiwi.com>
Date: Thu, 14 May 2015 13:53:04 +0200
Subject: [PATCH] Small update to Yara rules

---
 kiwi_passwords.yar | 143 +++++++++++++++++++++++++++------------------
 1 file changed, 86 insertions(+), 57 deletions(-)

diff --git a/kiwi_passwords.yar b/kiwi_passwords.yar
index 71e130d..4795d57 100644
--- a/kiwi_passwords.yar
+++ b/kiwi_passwords.yar
@@ -2,61 +2,90 @@
 	http://blog.gentilkiwi.com
 	benjamin@gentilkiwi.com
 	Licence : http://creativecommons.org/licenses/by/3.0/fr/
-*/
-rule mimikatz
-{
-	meta:
-		description		= "mimikatz"
-		author			= "Benjamin DELPY (gentilkiwi)"
-		tool_author		= "Benjamin DELPY (gentilkiwi)"
-	strings:
-		$exe_x86_1		= { 89 71 04 89 [0-3] 30 8d 04 bd }
-		$exe_x86_2		= { 89 79 04 89 [0-3] 38 8d 04 b5 }
-		
-		$exe_x64_1		= { 4c 03 d8 49 [0-3] 8b 03 48 89 }
-		$exe_x64_2		= { 4c 8b df 49 [0-3] c1 e3 04 48 [0-3] 8b cb 4c 03 [0-3] d8 }
-
-		$dll_1			= {	c7 0? 00 00 01 00 [4-14] c7 0? 01 00 00 00 }
-		$dll_2			= { c7 0? 10 02 00 00 ?? 89 4? }
-		
-		$sys_x86		= { a0 00 00 00 24 02 00 00 40 00 00 00 [0-4] b8 00 00 00 6c 02 00 00 40 00 00 00 }
-		$sys_x64		= { 88 01 00 00 3c 04 00 00 40 00 00 00 [0-4] e8 02 00 00 f8 02 00 00 40 00 00 00 }
-	condition:
-		(all of ($exe_x86_*)) or (all of ($exe_x64_*)) or (all of ($dll_*)) or (any of ($sys_*))
-}
-
-rule mimikatz_lsass_mdmp
-{
-	meta:
-		description		= "LSASS minidump file for mimikatz"
-		author			= "Benjamin DELPY (gentilkiwi)"
-	strings:
-		$lsass			= "System32\\lsass.exe"	wide nocase
-	condition:
-		(uint32(0) == 0x504d444d) and $lsass
-}
-
-rule mimikatz_kirbi_ticket
-{
-	meta:
-		description		= "KiRBi ticket for mimikatz"
-		author			= "Benjamin DELPY (gentilkiwi)"
-	strings:
-		$asn1			= { 76 82 ?? ?? 30 82 ?? ?? a0 03 02 01 05 a1 03 02 01 16 }
-	condition:
-		$asn1 at 0
-}
-
-rule wce
-{
-	meta:
-		description		= "wce"
-		author			= "Benjamin DELPY (gentilkiwi)"
-		tool_author		= "Hernan Ochoa (hernano)"
-	strings:
-		$hex_legacy		= { 8b ff 55 8b ec 6a 00 ff 75 0c ff 75 08 e8 [0-3] 5d c2 08 00 }
-		$hex_x86		= { 8d 45 f0 50 8d 45 f8 50 8d 45 e8 50 6a 00 8d 45 fc 50 [0-8] 50 72 69 6d 61 72 79 00 }
-		$hex_x64		= { ff f3 48 83 ec 30 48 8b d9 48 8d 15 [0-16] 50 72 69 6d 61 72 79 00 }
-	condition:
-		any of them
+*/
+rule mimikatz
+{
+	meta:
+		description		= "mimikatz"
+		author			= "Benjamin DELPY (gentilkiwi)"
+		tool_author		= "Benjamin DELPY (gentilkiwi)"
+
+	strings:
+		$exe_x86_1		= { 89 71 04 89 [0-3] 30 8d 04 bd }
+		$exe_x86_2		= { 89 79 04 89 [0-3] 38 8d 04 b5 }
+		
+		$exe_x64_1		= { 4c 03 d8 49 [0-3] 8b 03 48 89 }
+		$exe_x64_2		= { 4c 8b df 49 [0-3] c1 e3 04 48 [0-3] 8b cb 4c 03 [0-3] d8 }
+
+		$dll_1			= { c7 0? 00 00 01 00 [4-14] c7 0? 01 00 00 00 }
+		$dll_2			= { c7 0? 10 02 00 00 ?? 89 4? }
+		
+		$sys_x86		= { a0 00 00 00 24 02 00 00 40 00 00 00 [0-4] b8 00 00 00 6c 02 00 00 40 00 00 00 }
+		$sys_x64		= { 88 01 00 00 3c 04 00 00 40 00 00 00 [0-4] e8 02 00 00 f8 02 00 00 40 00 00 00 }
+
+	condition:
+		(all of ($exe_x86_*)) or (all of ($exe_x64_*)) or (all of ($dll_*)) or (any of ($sys_*))
+}
+
+
+rule mimikatz_lsass_mdmp
+{
+	meta:
+		description		= "LSASS minidump file for mimikatz"
+		author			= "Benjamin DELPY (gentilkiwi)"
+
+	strings:
+		$lsass			= "System32\\lsass.exe"	wide nocase
+
+	condition:
+		(uint32(0) == 0x504d444d) and $lsass
+}
+
+
+rule mimikatz_kirbi_ticket
+{
+	meta:
+		description		= "KiRBi ticket for mimikatz"
+		author			= "Benjamin DELPY (gentilkiwi)"
+
+	strings:
+		$asn1			= { 76 82 ?? ?? 30 82 ?? ?? a0 03 02 01 05 a1 03 02 01 16 }
+
+	condition:
+		$asn1 at 0
+}
+
+
+rule wce
+{
+	meta:
+		description		= "wce"
+		author			= "Benjamin DELPY (gentilkiwi)"
+		tool_author		= "Hernan Ochoa (hernano)"
+
+	strings:
+		$hex_legacy		= { 8b ff 55 8b ec 6a 00 ff 75 0c ff 75 08 e8 [0-3] 5d c2 08 00 }
+		$hex_x86		= { 8d 45 f0 50 8d 45 f8 50 8d 45 e8 50 6a 00 8d 45 fc 50 [0-8] 50 72 69 6d 61 72 79 00 }
+		$hex_x64		= { ff f3 48 83 ec 30 48 8b d9 48 8d 15 [0-16] 50 72 69 6d 61 72 79 00 }
+
+	condition:
+		any of them
+}
+
+
+rule lsadump
+{
+	meta:
+		description		= "LSA dump programe (bootkey/syskey) - pwdump and others"
+		author			= "Benjamin DELPY (gentilkiwi)"
+
+	strings:
+		$str_sam_inc	= "\\Domains\\Account" ascii nocase
+		$str_sam_exc	= "\\Domains\\Account\\Users\\Names\\" ascii nocase
+		$hex_api_call	= {(41 b8 | 68) 00 00 00 02 [0-64] (68 | ba) ff 07 0f 00 }
+		$str_msv_lsa	= { 4c 53 41 53 52 56 2e 44 4c 4c 00 [0-32] 6d 73 76 31 5f 30 2e 64 6c 6c 00 }
+		$hex_bkey		= { 4b 53 53 4d [20-70] 05 00 01 00}
+
+	condition:
+		($str_sam_inc and not $str_sam_exc) or $hex_api_call or $str_msv_lsa or $hex_bkey
 }
\ No newline at end of file