rule win_shifu_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 8bf3 f3a5 8b4d08 898134010000 e9???????? b800000100 }
            // n = 6, score = 100
            //   8bf3                 | mov                 esi, ebx
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   898134010000         | mov                 dword ptr [ecx + 0x134], eax
            //   e9????????           |                     
            //   b800000100           | mov                 eax, 0x10000

        $sequence_1 = { e8???????? 85c0 7415 ff35???????? 68???????? 68???????? e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7415                 | je                  0x17
            //   ff35????????         |                     
            //   68????????           |                     
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_2 = { 0fb65906 33d8 23da c1e808 33049df8ce3602 0fb65907 33d8 }
            // n = 7, score = 100
            //   0fb65906             | movzx               ebx, byte ptr [ecx + 6]
            //   33d8                 | xor                 ebx, eax
            //   23da                 | and                 ebx, edx
            //   c1e808               | shr                 eax, 8
            //   33049df8ce3602       | xor                 eax, dword ptr [ebx*4 + 0x236cef8]
            //   0fb65907             | movzx               ebx, byte ptr [ecx + 7]
            //   33d8                 | xor                 ebx, eax

        $sequence_3 = { 89430c 85c0 0f84b0030000 c16dfc0e 836d080e 83630800 c70304000000 }
            // n = 7, score = 100
            //   89430c               | mov                 dword ptr [ebx + 0xc], eax
            //   85c0                 | test                eax, eax
            //   0f84b0030000         | je                  0x3b6
            //   c16dfc0e             | shr                 dword ptr [ebp - 4], 0xe
            //   836d080e             | sub                 dword ptr [ebp + 8], 0xe
            //   83630800             | and                 dword ptr [ebx + 8], 0
            //   c70304000000         | mov                 dword ptr [ebx], 4

        $sequence_4 = { 72ee 85c9 0f84dc000000 8bdf 894df4 8b45ec 803c0302 }
            // n = 7, score = 100
            //   72ee                 | jb                  0xfffffff0
            //   85c9                 | test                ecx, ecx
            //   0f84dc000000         | je                  0xe2
            //   8bdf                 | mov                 ebx, edi
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   803c0302             | cmp                 byte ptr [ebx + eax], 2

        $sequence_5 = { ff15???????? 85c0 745d 8b75f8 e8???????? 8945fc 3bc7 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   745d                 | je                  0x5f
            //   8b75f8               | mov                 esi, dword ptr [ebp - 8]
            //   e8????????           |                     
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   3bc7                 | cmp                 eax, edi

        $sequence_6 = { e8???????? 8b4d08 c1e110 03f1 85c0 751b 8d4508 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   c1e110               | shl                 ecx, 0x10
            //   03f1                 | add                 esi, ecx
            //   85c0                 | test                eax, eax
            //   751b                 | jne                 0x1d
            //   8d4508               | lea                 eax, [ebp + 8]

        $sequence_7 = { 6a03 53 53 ff75f0 ff75e4 50 ff15???????? }
            // n = 7, score = 100
            //   6a03                 | push                3
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   ff75f0               | push                dword ptr [ebp - 0x10]
            //   ff75e4               | push                dword ptr [ebp - 0x1c]
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_8 = { 33c0 5e c9 c20c00 55 8bec 85c9 }
            // n = 7, score = 100
            //   33c0                 | xor                 eax, eax
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c20c00               | ret                 0xc
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   85c9                 | test                ecx, ecx

        $sequence_9 = { ff15???????? 895e08 a1???????? 8906 c74604???????? 897004 57 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   895e08               | mov                 dword ptr [esi + 8], ebx
            //   a1????????           |                     
            //   8906                 | mov                 dword ptr [esi], eax
            //   c74604????????       |                     
            //   897004               | mov                 dword ptr [eax + 4], esi
            //   57                   | push                edi

    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*))
}