rule win_shifu_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2024-10-31"
        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 = "20241030"
        malpedia_hash = "26e26953c49c8efafbf72a38076855d578e0a2e4"
        malpedia_version = "20241030"
        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 = { 59 32c0 8d7d9c 6a08 f3aa 58 e8???????? }
            // n = 7, score = 100
            //   59                   | pop                 ecx
            //   32c0                 | xor                 al, al
            //   8d7d9c               | lea                 edi, [ebp - 0x64]
            //   6a08                 | push                8
            //   f3aa                 | rep stosb           byte ptr es:[edi], al
            //   58                   | pop                 eax
            //   e8????????           |                     

        $sequence_1 = { 50 8b470c 6a00 83c030 50 6a01 ffd3 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8b470c               | mov                 eax, dword ptr [edi + 0xc]
            //   6a00                 | push                0
            //   83c030               | add                 eax, 0x30
            //   50                   | push                eax
            //   6a01                 | push                1
            //   ffd3                 | call                ebx

        $sequence_2 = { 83c8ff ebf0 55 8bec eb0a 8b4d08 48 }
            // n = 7, score = 100
            //   83c8ff               | or                  eax, 0xffffffff
            //   ebf0                 | jmp                 0xfffffff2
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   eb0a                 | jmp                 0xc
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   48                   | dec                 eax

        $sequence_3 = { 8bc4 85c0 7411 6894000000 6a0b ba???????? e8???????? }
            // n = 7, score = 100
            //   8bc4                 | mov                 eax, esp
            //   85c0                 | test                eax, eax
            //   7411                 | je                  0x13
            //   6894000000           | push                0x94
            //   6a0b                 | push                0xb
            //   ba????????           |                     
            //   e8????????           |                     

        $sequence_4 = { 6a0c 5e e8???????? 8945f8 3bc7 0f847d030000 897808 }
            // n = 7, score = 100
            //   6a0c                 | push                0xc
            //   5e                   | pop                 esi
            //   e8????????           |                     
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   3bc7                 | cmp                 eax, edi
            //   0f847d030000         | je                  0x383
            //   897808               | mov                 dword ptr [eax + 8], edi

        $sequence_5 = { 83e203 c1e204 c1eb04 0bd3 8a1402 885601 }
            // n = 6, score = 100
            //   83e203               | and                 edx, 3
            //   c1e204               | shl                 edx, 4
            //   c1eb04               | shr                 ebx, 4
            //   0bd3                 | or                  edx, ebx
            //   8a1402               | mov                 dl, byte ptr [edx + eax]
            //   885601               | mov                 byte ptr [esi + 1], dl

        $sequence_6 = { e8???????? 8bc4 85c0 7411 6889000000 6a0a }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8bc4                 | mov                 eax, esp
            //   85c0                 | test                eax, eax
            //   7411                 | je                  0x13
            //   6889000000           | push                0x89
            //   6a0a                 | push                0xa

        $sequence_7 = { c645ff01 eb4a 807dff00 740f 8bf3 e8???????? 85c0 }
            // n = 7, score = 100
            //   c645ff01             | mov                 byte ptr [ebp - 1], 1
            //   eb4a                 | jmp                 0x4c
            //   807dff00             | cmp                 byte ptr [ebp - 1], 0
            //   740f                 | je                  0x11
            //   8bf3                 | mov                 esi, ebx
            //   e8????????           |                     
            //   85c0                 | test                eax, eax

        $sequence_8 = { 8bc4 85c0 7411 6882000000 6a0b ba???????? e8???????? }
            // n = 7, score = 100
            //   8bc4                 | mov                 eax, esp
            //   85c0                 | test                eax, eax
            //   7411                 | je                  0x13
            //   6882000000           | push                0x82
            //   6a0b                 | push                0xb
            //   ba????????           |                     
            //   e8????????           |                     

        $sequence_9 = { d1e8 8bf0 eb05 85db 7401 4b 83fb01 }
            // n = 7, score = 100
            //   d1e8                 | shr                 eax, 1
            //   8bf0                 | mov                 esi, eax
            //   eb05                 | jmp                 7
            //   85db                 | test                ebx, ebx
            //   7401                 | je                  3
            //   4b                   | dec                 ebx
            //   83fb01               | cmp                 ebx, 1

    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*))
}