rule win_abaddon_pos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.abaddon_pos."
        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.abaddon_pos"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 80beb401000002 750f 80beb801000001 7506 }
            // n = 4, score = 100
            //   80beb401000002       | cmp                 byte ptr [esi + 0x1b4], 2
            //   750f                 | jne                 0x11
            //   80beb801000001       | cmp                 byte ptr [esi + 0x1b8], 1
            //   7506                 | jne                 8

        $sequence_1 = { 83f80c 7702 eb05 e9???????? 31db c786ac01000000000000 }
            // n = 6, score = 100
            //   83f80c               | cmp                 eax, 0xc
            //   7702                 | ja                  4
            //   eb05                 | jmp                 7
            //   e9????????           |                     
            //   31db                 | xor                 ebx, ebx
            //   c786ac01000000000000     | mov    dword ptr [esi + 0x1ac], 0

        $sequence_2 = { 48 c7c1f4010000 ff15???????? 48 83c420 48 }
            // n = 6, score = 100
            //   48                   | dec                 eax
            //   c7c1f4010000         | mov                 ecx, 0x1f4
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c420               | add                 esp, 0x20
            //   48                   | dec                 eax

        $sequence_3 = { 8908 83c008 8d95e4feffff 52 50 ff15???????? 6a00 }
            // n = 7, score = 100
            //   8908                 | mov                 dword ptr [eax], ecx
            //   83c008               | add                 eax, 8
            //   8d95e4feffff         | lea                 edx, [ebp - 0x11c]
            //   52                   | push                edx
            //   50                   | push                eax
            //   ff15????????         |                     
            //   6a00                 | push                0

        $sequence_4 = { 80fa5e 741c 80fa3d 7417 80fa00 7612 80fa7c }
            // n = 7, score = 100
            //   80fa5e               | cmp                 dl, 0x5e
            //   741c                 | je                  0x1e
            //   80fa3d               | cmp                 dl, 0x3d
            //   7417                 | je                  0x19
            //   80fa00               | cmp                 dl, 0
            //   7612                 | jbe                 0x14
            //   80fa7c               | cmp                 dl, 0x7c

        $sequence_5 = { 48 89d9 48 c7c280000000 ff15???????? }
            // n = 5, score = 100
            //   48                   | dec                 eax
            //   89d9                 | mov                 ecx, ebx
            //   48                   | dec                 eax
            //   c7c280000000         | mov                 edx, 0x80
            //   ff15????????         |                     

        $sequence_6 = { 0faf45f4 03855cfeffff 6800d00700 50 ff15???????? }
            // n = 5, score = 100
            //   0faf45f4             | imul                eax, dword ptr [ebp - 0xc]
            //   03855cfeffff         | add                 eax, dword ptr [ebp - 0x1a4]
            //   6800d00700           | push                0x7d000
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_7 = { 8986b8050000 48 83f800 0f844e030000 48 }
            // n = 5, score = 100
            //   8986b8050000         | mov                 dword ptr [esi + 0x5b8], eax
            //   48                   | dec                 eax
            //   83f800               | cmp                 eax, 0
            //   0f844e030000         | je                  0x354
            //   48                   | dec                 eax

        $sequence_8 = { 8b9ec8050000 48 8918 48 83c008 }
            // n = 5, score = 100
            //   8b9ec8050000         | mov                 ebx, dword ptr [esi + 0x5c8]
            //   48                   | dec                 eax
            //   8918                 | mov                 dword ptr [eax], ebx
            //   48                   | dec                 eax
            //   83c008               | add                 eax, 8

        $sequence_9 = { 48 83c420 48 8b86d0050000 48 0500040000 }
            // n = 6, score = 100
            //   48                   | dec                 eax
            //   83c420               | add                 esp, 0x20
            //   48                   | dec                 eax
            //   8b86d0050000         | mov                 eax, dword ptr [esi + 0x5d0]
            //   48                   | dec                 eax
            //   0500040000           | add                 eax, 0x400

        $sequence_10 = { c786e4050000c2a510a5 66c786e2050000456b 66c786e00500000200 48 8b86d0050000 }
            // n = 5, score = 100
            //   c786e4050000c2a510a5     | mov    dword ptr [esi + 0x5e4], 0xa510a5c2
            //   66c786e2050000456b     | mov    word ptr [esi + 0x5e2], 0x6b45
            //   66c786e00500000200     | mov    word ptr [esi + 0x5e0], 2
            //   48                   | dec                 eax
            //   8b86d0050000         | mov                 eax, dword ptr [esi + 0x5d0]

        $sequence_11 = { 7402 eb68 8b5d08 81c300040000 53 ff15???????? }
            // n = 6, score = 100
            //   7402                 | je                  4
            //   eb68                 | jmp                 0x6a
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]
            //   81c300040000         | add                 ebx, 0x400
            //   53                   | push                ebx
            //   ff15????????         |                     

        $sequence_12 = { 7508 6a05 ff15???????? 8b86a0010000 3b86a4010000 0f83e6030000 }
            // n = 6, score = 100
            //   7508                 | jne                 0xa
            //   6a05                 | push                5
            //   ff15????????         |                     
            //   8b86a0010000         | mov                 eax, dword ptr [esi + 0x1a0]
            //   3b86a4010000         | cmp                 eax, dword ptr [esi + 0x1a4]
            //   0f83e6030000         | jae                 0x3ec

        $sequence_13 = { ff15???????? 6a1c 8d9600010000 52 ff15???????? 6a1c 8d9600010000 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   6a1c                 | push                0x1c
            //   8d9600010000         | lea                 edx, [esi + 0x100]
            //   52                   | push                edx
            //   ff15????????         |                     
            //   6a1c                 | push                0x1c
            //   8d9600010000         | lea                 edx, [esi + 0x100]

        $sequence_14 = { 48 8b8ec0050000 48 c7c200000000 ff15???????? 48 83c420 }
            // n = 7, score = 100
            //   48                   | dec                 eax
            //   8b8ec0050000         | mov                 ecx, dword ptr [esi + 0x5c0]
            //   48                   | dec                 eax
            //   c7c200000000         | mov                 edx, 0
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c420               | add                 esp, 0x20

        $sequence_15 = { 48 83c000 48 8b9eb8050000 48 }
            // n = 5, score = 100
            //   48                   | dec                 eax
            //   83c000               | add                 eax, 0
            //   48                   | dec                 eax
            //   8b9eb8050000         | mov                 ebx, dword ptr [esi + 0x5b8]
            //   48                   | dec                 eax

    condition:
        7 of them and filesize < 40960
}

rule win_abaddon_pos_w0 {
    meta:
        author = "Darien Huss, Proofpoint"
        description = "AbaddonPOS"
        reference = "md5,317f9c57f7983e2608d5b2f00db954ff"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.abaddon_pos"
        malpedia_version = "20180322"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $s1 = "devil_host" fullword ascii
        $s2 = "Chrome" fullword ascii
        $s3 = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run" fullword ascii
        $i1 = { 31 ?? 81 ?? 55 89 E5 8B 74 }
    condition:
        all of ($s*) or $i1
}