rule win_poohmilk_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.poohmilk."
        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.poohmilk"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { 8d85ecfdffff 50 ffd7 8d8dc8fbffff 51 8d95ecfdffff }
            // n = 6, score = 200
            //   8d85ecfdffff         | lea                 eax, [ebp - 0x214]
            //   50                   | push                eax
            //   ffd7                 | call                edi
            //   8d8dc8fbffff         | lea                 ecx, [ebp - 0x438]
            //   51                   | push                ecx
            //   8d95ecfdffff         | lea                 edx, [ebp - 0x214]

        $sequence_1 = { 3b8de4efffff 7405 83f901 7577 8b502a }
            // n = 5, score = 200
            //   3b8de4efffff         | cmp                 ecx, dword ptr [ebp - 0x101c]
            //   7405                 | je                  7
            //   83f901               | cmp                 ecx, 1
            //   7577                 | jne                 0x79
            //   8b502a               | mov                 edx, dword ptr [eax + 0x2a]

        $sequence_2 = { 8d8decfdffff 51 898598fbffff ffd3 8b3d???????? 68???????? }
            // n = 6, score = 200
            //   8d8decfdffff         | lea                 ecx, [ebp - 0x214]
            //   51                   | push                ecx
            //   898598fbffff         | mov                 dword ptr [ebp - 0x468], eax
            //   ffd3                 | call                ebx
            //   8b3d????????         |                     
            //   68????????           |                     

        $sequence_3 = { 0f84d3000000 33d2 668910 8d85d4f9ffff }
            // n = 4, score = 200
            //   0f84d3000000         | je                  0xd9
            //   33d2                 | xor                 edx, edx
            //   668910               | mov                 word ptr [eax], dx
            //   8d85d4f9ffff         | lea                 eax, [ebp - 0x62c]

        $sequence_4 = { 837e3800 7418 837e1000 7612 837e1401 750c }
            // n = 6, score = 200
            //   837e3800             | cmp                 dword ptr [esi + 0x38], 0
            //   7418                 | je                  0x1a
            //   837e1000             | cmp                 dword ptr [esi + 0x10], 0
            //   7612                 | jbe                 0x14
            //   837e1401             | cmp                 dword ptr [esi + 0x14], 1
            //   750c                 | jne                 0xe

        $sequence_5 = { 898588d2ffff 898d7cd2ffff 898d80d2ffff 898d74d2ffff 898d78d2ffff 3bd9 }
            // n = 6, score = 200
            //   898588d2ffff         | mov                 dword ptr [ebp - 0x2d78], eax
            //   898d7cd2ffff         | mov                 dword ptr [ebp - 0x2d84], ecx
            //   898d80d2ffff         | mov                 dword ptr [ebp - 0x2d80], ecx
            //   898d74d2ffff         | mov                 dword ptr [ebp - 0x2d8c], ecx
            //   898d78d2ffff         | mov                 dword ptr [ebp - 0x2d88], ecx
            //   3bd9                 | cmp                 ebx, ecx

        $sequence_6 = { 0f8574020000 0fb79d02f0ffff 0fb79500f0ffff 895e10 3bda 0f855b020000 }
            // n = 6, score = 200
            //   0f8574020000         | jne                 0x27a
            //   0fb79d02f0ffff       | movzx               ebx, word ptr [ebp - 0xffe]
            //   0fb79500f0ffff       | movzx               edx, word ptr [ebp - 0x1000]
            //   895e10               | mov                 dword ptr [esi + 0x10], ebx
            //   3bda                 | cmp                 ebx, edx
            //   0f855b020000         | jne                 0x261

        $sequence_7 = { 7323 8b470c 8b5628 51 }
            // n = 4, score = 200
            //   7323                 | jae                 0x25
            //   8b470c               | mov                 eax, dword ptr [edi + 0xc]
            //   8b5628               | mov                 edx, dword ptr [esi + 0x28]
            //   51                   | push                ecx

        $sequence_8 = { 668910 8d85d4f9ffff 6a3e 50 e8???????? 83c408 }
            // n = 6, score = 200
            //   668910               | mov                 word ptr [eax], dx
            //   8d85d4f9ffff         | lea                 eax, [ebp - 0x62c]
            //   6a3e                 | push                0x3e
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8

        $sequence_9 = { 33c0 894610 894614 894618 89461c 8b4620 8b4f28 }
            // n = 7, score = 200
            //   33c0                 | xor                 eax, eax
            //   894610               | mov                 dword ptr [esi + 0x10], eax
            //   894614               | mov                 dword ptr [esi + 0x14], eax
            //   894618               | mov                 dword ptr [esi + 0x18], eax
            //   89461c               | mov                 dword ptr [esi + 0x1c], eax
            //   8b4620               | mov                 eax, dword ptr [esi + 0x20]
            //   8b4f28               | mov                 ecx, dword ptr [edi + 0x28]

    condition:
        7 of them and filesize < 245760
}