rule HttpBrowser_RAT_dropper_Gen1 {
	meta:
		description = "Threat Group 3390 APT Sample - HttpBrowser RAT Dropper"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://snip.ly/giNB"
		date = "2015-08-06"
		score = 70
		hash1 = "808de72f1eae29e3c1b2c32be1b84c5064865a235866edf5e790d2a7ba709907"
		hash2 = "f6f966d605c5e79de462a65df437ddfca0ad4eb5faba94fc875aba51a4b894a7"
		hash3 = "f424965a35477d822bbadb821125995616dc980d3d4f94a68c87d0cd9b291df9"
		hash4 = "01441546fbd20487cb2525a0e34e635eff2abe5c3afc131c7182113220f02753"
		hash5 = "8cd8159f6e4689f572e2087394452e80e62297af02ca55fe221fe5d7570ad47b"
		hash6 = "10de38419c9a02b80ab7bf2f1f1f15f57dbb0fbc9df14b9171dc93879c5a0c53"
		hash7 = "c2fa67e970d00279cec341f71577953d49e10fe497dae4f298c2e9abdd3a48cc"
		id = "2e347024-ac5f-5e8c-a8b0-53eaa9a03979"
	strings:
		$x1 = "1001=cmd.exe" fullword ascii 
		$x2 = "1003=ShellExecuteA" fullword ascii 
		$x3 = "1002=/c del /q %s" fullword ascii
		$x4 = "1004=SetThreadPriority" fullword ascii

		/* $s1 = "pnipcn.dllUT" fullword ascii
		$s2 = "ssonsvr.exeUT" fullword ascii
		$s3 = "navlu.dllUT" fullword ascii
		$s4 = "@CONOUT$" fullword wide 
		$s5 = "VPDN_LU.exeUT" fullword ascii
		$s6 = "msi.dll.urlUT" fullword ascii
		$s7 = "setup.exeUT" fullword ascii 
		$s8 = "pnipcn.dll.urlUT" fullword ascii
		$s9 = "ldvpreg.exeUT" fullword ascii */

		$op0 = { e8 71 11 00 00 83 c4 10 ff 4d e4 8b f0 78 07 8b } /* Opcode */
		$op1 = { e8 85 34 00 00 59 59 8b 86 b4 } /* Opcode */
		$op2 = { 8b 45 0c 83 38 00 0f 84 97 } /* Opcode */
		$op3 = { 8b 45 0c 83 38 00 0f 84 98 } /* Opcode */
		$op4 = { 89 7e 0c ff 15 a0 50 40 00 59 8b d8 6a 20 59 8d } /* Opcode */
		$op5 = { 56 8d 85 cd fc ff ff 53 50 88 9d cc fc ff ff e8 } /* Opcode */
	condition:
		uint16(0) == 0x5a4d and filesize < 400KB and all of ($x*) and 1 of ($op*)
}

rule HttpBrowser_RAT_Sample1 {
	meta:
		description = "Threat Group 3390 APT Sample - HttpBrowser RAT Sample update.hancominc.com"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://snip.ly/giNB"
		date = "2015-08-06"
		score = 80
		hash1 = "be334d1f8fa65a723af65200a166c2bbdb06690c8b30fafe772600e4662fc68b"
		hash2 = "1052ad7f4d49542e4da07fa8ea59c15c40bc09a4d726fad023daafdf05866ebb"
		id = "8babf47f-006c-5001-9753-08ac08f5e861"
	strings:
		$s0 = "update.hancominc.com" fullword wide 
	condition:
		uint16(0) == 0x5a4d and filesize < 100KB and $s0
}

rule HttpBrowser_RAT_Sample2 {
	meta:
		description = "Threat Group 3390 APT Sample - HttpBrowser RAT Sample"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://snip.ly/giNB"
		date = "2015-08-06"
		score = 80
		hash1 = "c57c5a2c322af2835ae136b75283eaaeeaa6aa911340470182a9983ae47b8992"
		id = "693d381f-50b0-5f06-b725-78243b67092c"
	strings:
		$s0 = "nKERNEL32.DLL" fullword wide
		$s1 = "WUSER32.DLL" fullword wide
		$s2 = "mscoree.dll" fullword wide
		$s3 = "VPDN_LU.exeUT" fullword ascii
	condition:
		uint16(0) == 0x5a4d and filesize < 250KB and all of them
}

rule HttpBrowser_RAT_Gen {
	meta:
		description = "Threat Group 3390 APT Sample - HttpBrowser RAT Generic"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://snip.ly/giNB"
		date = "2015-08-06"
		score = 90
		hash1 = "0299493ccb175d452866f5e21d023d3e92cd8d28452517d1d19c0f05f2c5ca27"
		hash2 = "065d055a90da59b4bdc88b97e537d6489602cb5dc894c5c16aff94d05c09abc7"
		hash3 = "05c7291db880f94c675eea336ecd66338bd0b1d49ad239cc17f9df08106e6684"
		hash4 = "07133f291fe022cd14346cd1f0a649aa2704ec9ccadfab809ca9c48b91a7d81b"
		hash5 = "0f8893e87ddec3d98e39a57f7cd530c28e36d596ea0a1d9d1e993dc2cae0a64d"
		hash6 = "108e6633744da6efe773eb78bd0ac804920add81c3dde4b26e953056ac1b26c5"
		hash7 = "1052ad7f4d49542e4da07fa8ea59c15c40bc09a4d726fad023daafdf05866ebb"
		hash8 = "1277ede988438d4168bb5b135135dd3b9ae7d9badcdf1421132ca4692dd18386"
		hash9 = "19be90c152f7a174835fd05a0b6f722e29c648969579ed7587ae036679e66a7b"
		hash10 = "1e7133bf5a9fe5e462321aafc2b7770b8e4183a66c7fef14364a0c3f698a29af"
		hash11 = "2264e5e8fcbdcb29027798b200939ecd8d1d3ad1ef0aef2b8ce7687103a3c113"
		hash12 = "2a1bdeb0a021fb0bdbb328bd4b65167d1f954c871fc33359cb5ea472bad6e13e"
		hash13 = "259a2e0508832d0cf3f4f5d9e9e1adde17102d2804541a9587a9a4b6f6f86669"
		hash14 = "240d9ce148091e72d8f501dbfbc7963997d5c2e881b4da59a62975ddcbb77ca2"
		hash15 = "211a1b195cf2cc70a2caf8f1aafb8426eb0e4bae955e85266490b12b5322aa16"
		hash16 = "2d25c6868c16085c77c58829d538b8f3dbec67485f79a059f24e0dce1e804438"
		hash17 = "2d932d764dd9b91166361d8c023d64a4480b5b587a6087b0ce3d2ac92ead8a7d"
		hash18 = "3556722d9aa37beadfa6ba248a66576f767e04b09b239d3fb0479fa93e0ba3fd"
		hash19 = "365e1d4180e93d7b87ba28ce4369312cbae191151ac23ff4a35f45440cb9be48"
		hash20 = "36c49f18ce3c205152eef82887eb3070e9b111d35a42b534b2fb2ee535b543c0"
		hash21 = "3eeb1fd1f0d8ab33f34183893c7346ddbbf3c19b94ba3602d377fa2e84aaad81"
		hash22 = "3fa8d13b337671323e7fe8b882763ec29b6786c528fa37da773d95a057a69d9a"
		id = "0ba9facb-7385-56ce-9e20-d86261a39cd1"
	strings:
		$s0 = "%d|%s|%04d/%02d/%02d %02d:%02d:%02d|%ld|%d" fullword wide 
		$s1 = "HttpBrowser/1.0" fullword wide
		$s2 = "set cmd : %s" ascii fullword
		$s3 = "\\config.ini" wide fullword
	condition:
		uint16(0) == 0x5a4d and filesize < 45KB and filesize > 20KB and all of them
}

rule HttpBrowser_RAT_dropper_Gen2 {
	meta:
		description = "Threat Group 3390 APT Sample - HttpBrowser RAT Dropper"
		license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
		author = "Florian Roth (Nextron Systems)"
		reference = "http://snip.ly/giNB"
		date = "2015-08-06"
		score = 70
		hash1 = "c57c5a2c322af2835ae136b75283eaaeeaa6aa911340470182a9983ae47b8992"
		hash2 = "dfa984174268a9f364d856fd47cfaca75804640f849624d69d81fcaca2b57166"
		id = "cd559642-a102-5946-8a7f-16c10e7f746d"
	strings:
		$s1 = "navlu.dll.urlUT" fullword ascii
		$s2 = "VPDN_LU.exeUT" fullword ascii
		$s3 = "pnipcn.dllUT" fullword ascii
		$s4 = "\\ssonsvr.exe" ascii
		$s5 = "/c del /q %s" fullword ascii
		$s6 = "\\setup.exe" ascii 
		$s7 = "msi.dllUT" fullword ascii

		$op0 = { 8b 45 0c 83 38 00 0f 84 98 } /* Opcode */
		$op1 = { e8 dd 07 00 00 ff 35 d8 fb 40 00 8b 35 7c a0 40 } /* Opcode */
		$op2 = { 83 fb 08 75 2c 8b 0d f8 af 40 00 89 4d dc 8b 0d } /* Opcode */
		$op3 = { c7 43 18 8c 69 40 00 e9 da 01 00 00 83 7d f0 00 } /* Opcode */
		$op4 = { 6a 01 e9 7c f8 ff ff bf 1a 40 00 96 1b 40 00 01 } /* Opcode */
	condition:
		uint16(0) == 0x5a4d and filesize < 400KB and 3 of ($s*) and 1 of ($op*)
}