rule win_abaddon_pos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "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 = { 750a 83fb3c 7605 e9???????? }
            // n = 4, score = 200
            //   750a                 | jne                 0xc
            //   83fb3c               | cmp                 ebx, 0x3c
            //   7605                 | jbe                 7
            //   e9????????           |                     

        $sequence_1 = { b804d00700 0faf45f4 03855cfeffff 6800d00700 50 }
            // n = 5, score = 100
            //   b804d00700           | mov                 eax, 0x7d004
            //   0faf45f4             | imul                eax, dword ptr [ebp - 0xc]
            //   03855cfeffff         | add                 eax, dword ptr [ebp - 0x1a4]
            //   6800d00700           | push                0x7d000
            //   50                   | push                eax

        $sequence_2 = { 038560feffff 6a00 6a00 50 }
            // n = 4, score = 100
            //   038560feffff         | add                 eax, dword ptr [ebp - 0x1a0]
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   50                   | push                eax

        $sequence_3 = { 4c 8b7d10 49 81c700040000 48 }
            // n = 5, score = 100
            //   4c                   | dec                 esp
            //   8b7d10               | mov                 edi, dword ptr [ebp + 0x10]
            //   49                   | dec                 ecx
            //   81c700040000         | add                 edi, 0x400
            //   48                   | dec                 eax

        $sequence_4 = { 81bea001000000dc0500 740c 81bea001000000d60600 7508 }
            // n = 4, score = 100
            //   81bea001000000dc0500     | cmp    dword ptr [esi + 0x1a0], 0x5dc00
            //   740c                 | je                  0xe
            //   81bea001000000d60600     | cmp    dword ptr [esi + 0x1a0], 0x6d600
            //   7508                 | jne                 0xa

        $sequence_5 = { 89d9 ff15???????? 48 83c420 c704030d0a0000 48 }
            // n = 6, score = 100
            //   89d9                 | mov                 ecx, ebx
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c420               | add                 esp, 0x20
            //   c704030d0a0000       | mov                 dword ptr [ebx + eax], 0xa0d
            //   48                   | dec                 eax

        $sequence_6 = { 48 0500040000 803800 7664 48 31c9 48 }
            // n = 7, score = 100
            //   48                   | dec                 eax
            //   0500040000           | add                 eax, 0x400
            //   803800               | cmp                 byte ptr [eax], 0
            //   7664                 | jbe                 0x66
            //   48                   | dec                 eax
            //   31c9                 | xor                 ecx, ecx
            //   48                   | dec                 eax

        $sequence_7 = { 83c420 48 83c408 48 83ec30 48 c7c100000000 }
            // n = 7, score = 100
            //   83c420               | add                 esp, 0x20
            //   48                   | dec                 eax
            //   83c408               | add                 esp, 8
            //   48                   | dec                 eax
            //   83ec30               | sub                 esp, 0x30
            //   48                   | dec                 eax
            //   c7c100000000         | mov                 ecx, 0

        $sequence_8 = { c786b801000000000000 c786bc01000000000000 807b0100 750c c786b001000001000000 eb0a c786b001000000000000 }
            // n = 7, score = 100
            //   c786b801000000000000     | mov    dword ptr [esi + 0x1b8], 0
            //   c786bc01000000000000     | mov    dword ptr [esi + 0x1bc], 0
            //   807b0100             | cmp                 byte ptr [ebx + 1], 0
            //   750c                 | jne                 0xe
            //   c786b001000001000000     | mov    dword ptr [esi + 0x1b0], 1
            //   eb0a                 | jmp                 0xc
            //   c786b001000000000000     | mov    dword ptr [esi + 0x1b0], 0

        $sequence_9 = { eba6 43 ebcd ffb5c8feffff }
            // n = 4, score = 100
            //   eba6                 | jmp                 0xffffffa8
            //   43                   | inc                 ebx
            //   ebcd                 | jmp                 0xffffffcf
            //   ffb5c8feffff         | push                dword ptr [ebp - 0x138]

        $sequence_10 = { ff15???????? 48 83c430 48 83ec20 48 89c1 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c430               | add                 esp, 0x30
            //   48                   | dec                 eax
            //   83ec20               | sub                 esp, 0x20
            //   48                   | dec                 eax
            //   89c1                 | mov                 ecx, eax

        $sequence_11 = { 52 ff15???????? 0186a0010000 ff86a0010000 e9???????? 6a05 ff15???????? }
            // n = 7, score = 100
            //   52                   | push                edx
            //   ff15????????         |                     
            //   0186a0010000         | add                 dword ptr [esi + 0x1a0], eax
            //   ff86a0010000         | inc                 dword ptr [esi + 0x1a0]
            //   e9????????           |                     
            //   6a05                 | push                5
            //   ff15????????         |                     

        $sequence_12 = { 81fb00010000 7607 b800010000 eb02 89d8 }
            // n = 5, score = 100
            //   81fb00010000         | cmp                 ebx, 0x100
            //   7607                 | jbe                 9
            //   b800010000           | mov                 eax, 0x100
            //   eb02                 | jmp                 4
            //   89d8                 | mov                 eax, ebx

        $sequence_13 = { c786a801000000000000 fe86a8010000 42 80beb001000001 }
            // n = 4, score = 100
            //   c786a801000000000000     | mov    dword ptr [esi + 0x1a8], 0
            //   fe86a8010000         | inc                 byte ptr [esi + 0x1a8]
            //   42                   | inc                 edx
            //   80beb001000001       | cmp                 byte ptr [esi + 0x1b0], 1

        $sequence_14 = { 7208 48 83f80c 7702 eb05 e9???????? 48 }
            // n = 7, score = 100
            //   7208                 | jb                  0xa
            //   48                   | dec                 eax
            //   83f80c               | cmp                 eax, 0xc
            //   7702                 | ja                  4
            //   eb05                 | jmp                 7
            //   e9????????           |                     
            //   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
}