rule win_icedid_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        version = "1"
        description = "Detects win.icedid."
        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.icedid"
        malpedia_rule_date = "20220805"
        malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
        malpedia_version = "20220808"
        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 = { 68???????? 6a00 ff15???????? 33c0 40 }
            // n = 5, score = 1300
            //   68????????           |                     
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax

        $sequence_1 = { 0fb60d???????? 50 0fb605???????? 50 0fb605???????? 50 }
            // n = 6, score = 1300
            //   0fb60d????????       |                     
            //   50                   | push                eax
            //   0fb605????????       |                     
            //   50                   | push                eax
            //   0fb605????????       |                     
            //   50                   | push                eax

        $sequence_2 = { 742c 803e00 7427 6a3b 56 ff15???????? 8bf8 }
            // n = 7, score = 1300
            //   742c                 | je                  0x2e
            //   803e00               | cmp                 byte ptr [esi], 0
            //   7427                 | je                  0x29
            //   6a3b                 | push                0x3b
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8bf8                 | mov                 edi, eax

        $sequence_3 = { 55 8bec 56 8d4510 50 ff750c 6a00 }
            // n = 7, score = 1300
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi
            //   8d4510               | lea                 eax, [ebp + 0x10]
            //   50                   | push                eax
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   6a00                 | push                0

        $sequence_4 = { ff15???????? 85c0 7511 56 57 }
            // n = 5, score = 1300
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7511                 | jne                 0x13
            //   56                   | push                esi
            //   57                   | push                edi

        $sequence_5 = { d1c8 f7d0 d1c8 2d20010000 d1c0 f7d0 2d01910000 }
            // n = 7, score = 1300
            //   d1c8                 | ror                 eax, 1
            //   f7d0                 | not                 eax
            //   d1c8                 | ror                 eax, 1
            //   2d20010000           | sub                 eax, 0x120
            //   d1c0                 | rol                 eax, 1
            //   f7d0                 | not                 eax
            //   2d01910000           | sub                 eax, 0x9101

        $sequence_6 = { ff773c 51 51 ff15???????? }
            // n = 4, score = 1300
            //   ff773c               | push                dword ptr [edi + 0x3c]
            //   51                   | push                ecx
            //   51                   | push                ecx
            //   ff15????????         |                     

        $sequence_7 = { 50 7413 ff36 6a08 ff15???????? }
            // n = 5, score = 1300
            //   50                   | push                eax
            //   7413                 | je                  0x15
            //   ff36                 | push                dword ptr [esi]
            //   6a08                 | push                8
            //   ff15????????         |                     

        $sequence_8 = { ff15???????? 8bf7 8bc6 eb02 33c0 }
            // n = 5, score = 1300
            //   ff15????????         |                     
            //   8bf7                 | mov                 esi, edi
            //   8bc6                 | mov                 eax, esi
            //   eb02                 | jmp                 4
            //   33c0                 | xor                 eax, eax

        $sequence_9 = { c1c90d 0fbec0 03c8 46 8a06 }
            // n = 5, score = 1200
            //   c1c90d               | ror                 ecx, 0xd
            //   0fbec0               | movsx               eax, al
            //   03c8                 | add                 ecx, eax
            //   46                   | inc                 esi
            //   8a06                 | mov                 al, byte ptr [esi]

        $sequence_10 = { 8be5 5d c3 8b542404 33c9 }
            // n = 5, score = 1000
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8b542404             | mov                 edx, dword ptr [esp + 4]
            //   33c9                 | xor                 ecx, ecx

        $sequence_11 = { 8bf0 8d45fc 50 ff75fc 6a05 }
            // n = 5, score = 1000
            //   8bf0                 | mov                 esi, eax
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   6a05                 | push                5

        $sequence_12 = { 47 3b7820 72d1 5b 33c0 40 5f }
            // n = 7, score = 800
            //   47                   | inc                 edi
            //   3b7820               | cmp                 edi, dword ptr [eax + 0x20]
            //   72d1                 | jb                  0xffffffd3
            //   5b                   | pop                 ebx
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax
            //   5f                   | pop                 edi

        $sequence_13 = { eb5c 8d5004 89542414 8b12 85d2 }
            // n = 5, score = 800
            //   eb5c                 | jmp                 0x5e
            //   8d5004               | lea                 edx, [eax + 4]
            //   89542414             | mov                 dword ptr [esp + 0x14], edx
            //   8b12                 | mov                 edx, dword ptr [edx]
            //   85d2                 | test                edx, edx

        $sequence_14 = { 8d6af8 d1ed 6a00 5f 743f 8d5808 }
            // n = 6, score = 800
            //   8d6af8               | lea                 ebp, [edx - 8]
            //   d1ed                 | shr                 ebp, 1
            //   6a00                 | push                0
            //   5f                   | pop                 edi
            //   743f                 | je                  0x41
            //   8d5808               | lea                 ebx, [eax + 8]

        $sequence_15 = { 83c302 3bfd 72c4 8b542414 0302 }
            // n = 5, score = 800
            //   83c302               | add                 ebx, 2
            //   3bfd                 | cmp                 edi, ebp
            //   72c4                 | jb                  0xffffffc6
            //   8b542414             | mov                 edx, dword ptr [esp + 0x14]
            //   0302                 | add                 eax, dword ptr [edx]

        $sequence_16 = { ff5010 85c0 7407 33c0 }
            // n = 4, score = 400
            //   ff5010               | call                dword ptr [eax + 0x10]
            //   85c0                 | test                eax, eax
            //   7407                 | je                  9
            //   33c0                 | xor                 eax, eax

        $sequence_17 = { a808 75f5 a804 7406 }
            // n = 4, score = 400
            //   a808                 | test                al, 8
            //   75f5                 | jne                 0xfffffff7
            //   a804                 | test                al, 4
            //   7406                 | je                  8

        $sequence_18 = { ff15???????? 85c0 750a b8010000c0 }
            // n = 4, score = 400
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   750a                 | jne                 0xc
            //   b8010000c0           | mov                 eax, 0xc0000001

        $sequence_19 = { 48 8364244000 48 8d4510 }
            // n = 4, score = 200
            //   48                   | dec                 eax
            //   8364244000           | and                 dword ptr [esp + 0x40], 0
            //   48                   | dec                 eax
            //   8d4510               | lea                 eax, [ebp + 0x10]

        $sequence_20 = { 668905???????? e8???????? 0bd8 85db 7505 }
            // n = 5, score = 200
            //   668905????????       |                     
            //   e8????????           |                     
            //   0bd8                 | or                  ebx, eax
            //   85db                 | test                ebx, ebx
            //   7505                 | jne                 7

        $sequence_21 = { 48 8945e0 48 8bd8 48 85c0 }
            // n = 6, score = 200
            //   48                   | dec                 eax
            //   8945e0               | mov                 dword ptr [ebp - 0x20], eax
            //   48                   | dec                 eax
            //   8bd8                 | mov                 ebx, eax
            //   48                   | dec                 eax
            //   85c0                 | test                eax, eax

        $sequence_22 = { 85c0 7507 b806000000 eb11 8b442438 f7d8 1bc0 }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   7507                 | jne                 9
            //   b806000000           | mov                 eax, 6
            //   eb11                 | jmp                 0x13
            //   8b442438             | mov                 eax, dword ptr [esp + 0x38]
            //   f7d8                 | neg                 eax
            //   1bc0                 | sbb                 eax, eax

        $sequence_23 = { 8bcf 41 ff506b 49 }
            // n = 4, score = 200
            //   8bcf                 | mov                 ecx, edi
            //   41                   | inc                 ecx
            //   ff506b               | call                dword ptr [eax + 0x6b]
            //   49                   | dec                 ecx

        $sequence_24 = { 4883ff04 0f8210010000 4883ef04 48897c2430 4885db 753d 4885ff }
            // n = 7, score = 100
            //   4883ff04             | mov                 ebx, dword ptr [esp + 0x28]
            //   0f8210010000         | dec                 esp
            //   4883ef04             | cmp                 ebx, dword ptr [esp + 0x30]
            //   48897c2430           | jae                 0x13
            //   4885db               | dec                 esp
            //   753d                 | mov                 esi, dword ptr [esp + 0x20]
            //   4885ff               | jmp                 0xffffffb4

        $sequence_25 = { 4289448440 488b5c2428 4c3b5c2430 7307 4c8b742420 eba1 488bb590020000 }
            // n = 7, score = 100
            //   4289448440           | add                 ecx, eax
            //   488b5c2428           | rol                 ecx, 3
            //   4c3b5c2430           | dec                 eax
            //   7307                 | cmp                 edx, edi
            //   4c8b742420           | jb                  0xfffffff7
            //   eba1                 | inc                 esp
            //   488bb590020000       | cmp                 ecx, ecx

        $sequence_26 = { 03c8 c1c103 483bd7 72ef 443bc9 7458 4585d2 }
            // n = 7, score = 100
            //   03c8                 | dec                 eax
            //   c1c103               | test                edi, edi
            //   483bd7               | je                  0xff
            //   72ef                 | dec                 eax
            //   443bc9               | mov                 ecx, eax
            //   7458                 | dec                 esp
            //   4585d2               | lea                 eax, [edi + 1]

        $sequence_27 = { e9???????? ff15???????? 33c0 eb05 b801000000 488b5c2440 }
            // n = 6, score = 100
            //   e9????????           |                     
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   eb05                 | jmp                 7
            //   b801000000           | mov                 eax, 1
            //   488b5c2440           | dec                 eax

        $sequence_28 = { 4885ff 0f84f9000000 ff15???????? 488bc8 4c8d4701 }
            // n = 5, score = 100
            //   4885ff               | inc                 ebp
            //   0f84f9000000         | xor                 eax, eax
            //   ff15????????         |                     
            //   488bc8               | mov                 dword ptr [eax - 0x38], 3
            //   4c8d4701             | mov                 edx, 0x80000000

        $sequence_29 = { 4533c0 c740c803000000 ba00000080 ff15???????? }
            // n = 4, score = 100
            //   4533c0               | dec                 eax
            //   c740c803000000       | test                ebx, ebx
            //   ba00000080           | je                  0x1d
            //   ff15????????         |                     

        $sequence_30 = { 4585d2 7420 4885db 741b }
            // n = 4, score = 100
            //   4585d2               | mov                 ebx, dword ptr [esp + 0x40]
            //   7420                 | inc                 ebp
            //   4885db               | test                edx, edx
            //   741b                 | je                  0x22

        $sequence_31 = { 488bf2 488bd9 ff15???????? 4885c0 7504 33c0 eb7e }
            // n = 7, score = 100
            //   488bf2               | je                  0x65
            //   488bd9               | inc                 ebp
            //   ff15????????         |                     
            //   4885c0               | test                edx, edx
            //   7504                 | inc                 edx
            //   33c0                 | mov                 dword ptr [esp + eax*4 + 0x40], eax
            //   eb7e                 | dec                 eax

    condition:
        7 of them and filesize < 303104
}