rule win_deputydog_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.deputydog."
        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.deputydog"
        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 = { 5b 8bcb f7f1 8b4d0c 8d048504000000 }
            // n = 5, score = 100
            //   5b                   | pop                 ebx
            //   8bcb                 | mov                 ecx, ebx
            //   f7f1                 | div                 ecx
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   8d048504000000       | lea                 eax, [eax*4 + 4]

        $sequence_1 = { 56 8d4de0 c645fc05 ff15???????? 8d45d0 50 }
            // n = 6, score = 100
            //   56                   | push                esi
            //   8d4de0               | lea                 ecx, [ebp - 0x20]
            //   c645fc05             | mov                 byte ptr [ebp - 4], 5
            //   ff15????????         |                     
            //   8d45d0               | lea                 eax, [ebp - 0x30]
            //   50                   | push                eax

        $sequence_2 = { 8bc8 e8???????? 8bf0 ff7514 8b06 834dfcff }
            // n = 6, score = 100
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   ff7514               | push                dword ptr [ebp + 0x14]
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   834dfcff             | or                  dword ptr [ebp - 4], 0xffffffff

        $sequence_3 = { 33c0 8dbd1ef9ffff f3ab 66ab 8d851cf9ffff 50 56 }
            // n = 7, score = 100
            //   33c0                 | xor                 eax, eax
            //   8dbd1ef9ffff         | lea                 edi, [ebp - 0x6e2]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   66ab                 | stosw               word ptr es:[edi], ax
            //   8d851cf9ffff         | lea                 eax, [ebp - 0x6e4]
            //   50                   | push                eax
            //   56                   | push                esi

        $sequence_4 = { 0f95c1 8d85ccfeffff 41 50 }
            // n = 4, score = 100
            //   0f95c1               | setne               cl
            //   8d85ccfeffff         | lea                 eax, [ebp - 0x134]
            //   41                   | inc                 ecx
            //   50                   | push                eax

        $sequence_5 = { 8d85a4fbffff 50 ffd6 8b4dfc 83c410 8d85a4fbffff 50 }
            // n = 7, score = 100
            //   8d85a4fbffff         | lea                 eax, [ebp - 0x45c]
            //   50                   | push                eax
            //   ffd6                 | call                esi
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   83c410               | add                 esp, 0x10
            //   8d85a4fbffff         | lea                 eax, [ebp - 0x45c]
            //   50                   | push                eax

        $sequence_6 = { 8d45ed 50 e8???????? 8d45e8 6a09 50 }
            // n = 6, score = 100
            //   8d45ed               | lea                 eax, [ebp - 0x13]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d45e8               | lea                 eax, [ebp - 0x18]
            //   6a09                 | push                9
            //   50                   | push                eax

        $sequence_7 = { 33c0 8dbdbafbffff f3ab 66ab 8d85b8fbffff 6804010000 }
            // n = 6, score = 100
            //   33c0                 | xor                 eax, eax
            //   8dbdbafbffff         | lea                 edi, [ebp - 0x446]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   66ab                 | stosw               word ptr es:[edi], ax
            //   8d85b8fbffff         | lea                 eax, [ebp - 0x448]
            //   6804010000           | push                0x104

        $sequence_8 = { 32c0 e9???????? 57 bf???????? 6683bdd8fdffff2e 7448 f685acfdffff10 }
            // n = 7, score = 100
            //   32c0                 | xor                 al, al
            //   e9????????           |                     
            //   57                   | push                edi
            //   bf????????           |                     
            //   6683bdd8fdffff2e     | cmp                 word ptr [ebp - 0x228], 0x2e
            //   7448                 | je                  0x4a
            //   f685acfdffff10       | test                byte ptr [ebp - 0x254], 0x10

        $sequence_9 = { 7575 6a2c e8???????? 59 894508 3bc6 8975fc }
            // n = 7, score = 100
            //   7575                 | jne                 0x77
            //   6a2c                 | push                0x2c
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   894508               | mov                 dword ptr [ebp + 8], eax
            //   3bc6                 | cmp                 eax, esi
            //   8975fc               | mov                 dword ptr [ebp - 4], esi

    condition:
        7 of them and filesize < 90112
}