rule win_shifu_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.shifu."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.shifu"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { 33ff 8b1d???????? 397df8 7405 ff75f8 ffd3 397dfc }
            // n = 7, score = 100
            //   33ff                 | xor                 edi, edi
            //   8b1d????????         |                     
            //   397df8               | cmp                 dword ptr [ebp - 8], edi
            //   7405                 | je                  7
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ffd3                 | call                ebx
            //   397dfc               | cmp                 dword ptr [ebp - 4], edi

        $sequence_1 = { e8???????? 85c0 7509 e8???????? 85c0 740a e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7509                 | jne                 0xb
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   740a                 | je                  0xc
            //   e8????????           |                     

        $sequence_2 = { 881c11 ff07 8b0f 8b8660af0100 8a9659af0100 8b5d08 881401 }
            // n = 7, score = 100
            //   881c11               | mov                 byte ptr [ecx + edx], bl
            //   ff07                 | inc                 dword ptr [edi]
            //   8b0f                 | mov                 ecx, dword ptr [edi]
            //   8b8660af0100         | mov                 eax, dword ptr [esi + 0x1af60]
            //   8a9659af0100         | mov                 dl, byte ptr [esi + 0x1af59]
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]
            //   881401               | mov                 byte ptr [ecx + eax], dl

        $sequence_3 = { ff75f8 e8???????? 85c0 7532 395d0c 7478 ffd7 }
            // n = 7, score = 100
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7532                 | jne                 0x34
            //   395d0c               | cmp                 dword ptr [ebp + 0xc], ebx
            //   7478                 | je                  0x7a
            //   ffd7                 | call                edi

        $sequence_4 = { 57 8b7818 8b4014 03d6 03ce 03de }
            // n = 6, score = 100
            //   57                   | push                edi
            //   8b7818               | mov                 edi, dword ptr [eax + 0x18]
            //   8b4014               | mov                 eax, dword ptr [eax + 0x14]
            //   03d6                 | add                 edx, esi
            //   03ce                 | add                 ecx, esi
            //   03de                 | add                 ebx, esi

        $sequence_5 = { 58 e8???????? 8bc4 bf8c000000 85c0 740d 57 }
            // n = 7, score = 100
            //   58                   | pop                 eax
            //   e8????????           |                     
            //   8bc4                 | mov                 eax, esp
            //   bf8c000000           | mov                 edi, 0x8c
            //   85c0                 | test                eax, eax
            //   740d                 | je                  0xf
            //   57                   | push                edi

        $sequence_6 = { f7da 897de0 89bd48ffffff 8945f8 89bd0cffffff 897dd8 897dec }
            // n = 7, score = 100
            //   f7da                 | neg                 edx
            //   897de0               | mov                 dword ptr [ebp - 0x20], edi
            //   89bd48ffffff         | mov                 dword ptr [ebp - 0xb8], edi
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   89bd0cffffff         | mov                 dword ptr [ebp - 0xf4], edi
            //   897dd8               | mov                 dword ptr [ebp - 0x28], edi
            //   897dec               | mov                 dword ptr [ebp - 0x14], edi

        $sequence_7 = { 740d ff35???????? 56 57 e8???????? c705????????01000000 }
            // n = 6, score = 100
            //   740d                 | je                  0xf
            //   ff35????????         |                     
            //   56                   | push                esi
            //   57                   | push                edi
            //   e8????????           |                     
            //   c705????????01000000     |     

        $sequence_8 = { 85db 7401 4b 83fb01 734a 837de800 7417 }
            // n = 7, score = 100
            //   85db                 | test                ebx, ebx
            //   7401                 | je                  3
            //   4b                   | dec                 ebx
            //   83fb01               | cmp                 ebx, 1
            //   734a                 | jae                 0x4c
            //   837de800             | cmp                 dword ptr [ebp - 0x18], 0
            //   7417                 | je                  0x19

        $sequence_9 = { 7405 80fbef 7506 097e1b 09461f b900004000 }
            // n = 6, score = 100
            //   7405                 | je                  7
            //   80fbef               | cmp                 bl, 0xef
            //   7506                 | jne                 8
            //   097e1b               | or                  dword ptr [esi + 0x1b], edi
            //   09461f               | or                  dword ptr [esi + 0x1f], eax
            //   b900004000           | mov                 ecx, 0x400000

    condition:
        7 of them and filesize < 344064
}

rule win_shifu_w0 {
	meta:
		description = "Detects SHIFU Banking Trojan"
		author = "Florian Roth"
		contribution = "Daniel Plohmann"
		reference = "http://goo.gl/52n8WE"
		date = "2015-10-31"
		score = 70
		hash = "0066d1c8053ff8b0c07418c7f8d20e5cd64007bb850944269f611febd0c1afe0"
		hash = "3956d32a870d81be34cafc867769b2a2f55a96360070f1cb3d9addc2918357d5"
		hash = "3fde1b2b50fcb36a695f1e6bc577cd930c2343066d98982cf982393e55bfce0d"
		hash = "457ad4a4d4e675fe09f63873ca3364434dc872dde7d9b64ce7db919eaff47485"
		hash = "51edba913e8b83d1388b1be975957e439015289d51d3d5774d501551f220df6f"
		hash = "6611a2b79a3acf0003b1197aa5bfe488a33db69b663c79c6c5b023e86818d38b"
		hash = "72e239924faebf8209f8e3d093f264f778a55efb56b619f26cea73b1c4feb7a4"
		hash = "7a29cb641b9ac33d1bb405d364bc6e9c7ce3e218a8ff295b75ca0922cf418290"
		hash = "92fe4f9a87c796e993820d1bda8040aced36e316de67c9c0c5fc71aadc41e0f8"
		hash = "93ecb6bd7c76e1b66f8c176418e73e274e2c705986d4ac9ede9d25db4091ab05"
		hash = "a0b7fac69a4eb32953c16597da753b15060f6eba452d150109ff8aabc2c56123"
		hash = "a8b6e798116ce0b268e2c9afac61536b8722e86b958bd2ee95c6ecdec86130c9"
		hash = "d6244c1177b679b3d67f6cec34fe0ae87fba21998d4f5024d8eeaf15ca242503"
		hash = "dcc9c38e695ffd121e793c91ca611a4025a116321443297f710a47ce06afb36d"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/shifu_trojan.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.shifu"
        malpedia_version = "20170603"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
	strings:
		$x1 = "\\Gather\\Dividerail.pdb" ascii

		$s0 = "\\payload\\payload.x86.pdb" ascii
		$s1 = "USER_PRIV_GUEST" fullword wide
		$s2 = "USER_PRIV_ADMIN" fullword wide
		$s3 = "USER_PRIV_USER" fullword wide
		$s4 = "%ws\\%ws" wide
	condition:
		($x1 or 5 of ($s*))
}