rule win_abaddon_pos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        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 = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 0f8455010000 8b85c8feffff 3905???????? 7502 ebd8 31db }
            // n = 6, score = 100
            //   0f8455010000         | je                  0x15b
            //   8b85c8feffff         | mov                 eax, dword ptr [ebp - 0x138]
            //   3905????????         |                     
            //   7502                 | jne                 4
            //   ebd8                 | jmp                 0xffffffda
            //   31db                 | xor                 ebx, ebx

        $sequence_2 = { eb27 8b8600010000 03860c010000 89867c010000 }
            // n = 4, score = 100
            //   eb27                 | jmp                 0x29
            //   8b8600010000         | mov                 eax, dword ptr [esi + 0x100]
            //   03860c010000         | add                 eax, dword ptr [esi + 0x10c]
            //   89867c010000         | mov                 dword ptr [esi + 0x17c], eax

        $sequence_3 = { ff45f4 eb06 43 e9???????? 68c8000000 ff15???????? }
            // n = 6, score = 100
            //   ff45f4               | inc                 dword ptr [ebp - 0xc]
            //   eb06                 | jmp                 8
            //   43                   | inc                 ebx
            //   e9????????           |                     
            //   68c8000000           | push                0xc8
            //   ff15????????         |                     

        $sequence_4 = { 8b8ec0050000 48 c7c200000000 ff15???????? 48 }
            // n = 5, score = 100
            //   8b8ec0050000         | mov                 ecx, dword ptr [esi + 0x5c0]
            //   48                   | dec                 eax
            //   c7c200000000         | mov                 edx, 0
            //   ff15????????         |                     
            //   48                   | dec                 eax

        $sequence_5 = { ebe4 50 ff15???????? 6a00 6a00 }
            // n = 5, score = 100
            //   ebe4                 | jmp                 0xffffffe6
            //   50                   | push                eax
            //   ff15????????         |                     
            //   6a00                 | push                0
            //   6a00                 | push                0

        $sequence_6 = { 7524 8b869c010000 b400 b202 f6f2 80fc00 7507 }
            // n = 7, score = 100
            //   7524                 | jne                 0x26
            //   8b869c010000         | mov                 eax, dword ptr [esi + 0x19c]
            //   b400                 | mov                 ah, 0
            //   b202                 | mov                 dl, 2
            //   f6f2                 | div                 dl
            //   80fc00               | cmp                 ah, 0
            //   7507                 | jne                 9

        $sequence_7 = { 49 c7c0???????? 49 c7c100000000 }
            // n = 4, score = 100
            //   49                   | dec                 ecx
            //   c7c0????????         |                     
            //   49                   | dec                 ecx
            //   c7c100000000         | mov                 ecx, 0

        $sequence_8 = { ff15???????? 48 83c420 48 83ec20 48 8b8ed0050000 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c420               | add                 esp, 0x20
            //   48                   | dec                 eax
            //   83ec20               | sub                 esp, 0x20
            //   48                   | dec                 eax
            //   8b8ed0050000         | mov                 ecx, dword ptr [esi + 0x5d0]

        $sequence_9 = { ff15???????? 48 83c430 48 8986c0050000 48 }
            // n = 6, score = 100
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c430               | add                 esp, 0x30
            //   48                   | dec                 eax
            //   8986c0050000         | mov                 dword ptr [esi + 0x5c0], eax
            //   48                   | dec                 eax

        $sequence_10 = { 48 8b8ed0050000 48 c7c200d00700 ff15???????? 48 83c420 }
            // n = 7, score = 100
            //   48                   | dec                 eax
            //   8b8ed0050000         | mov                 ecx, dword ptr [esi + 0x5d0]
            //   48                   | dec                 eax
            //   c7c200d00700         | mov                 edx, 0x7d000
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c420               | add                 esp, 0x20

        $sequence_11 = { 7205 e9???????? eb91 81be0c01000080cf0700 7607 }
            // n = 5, score = 100
            //   7205                 | jb                  7
            //   e9????????           |                     
            //   eb91                 | jmp                 0xffffff93
            //   81be0c01000080cf0700     | cmp    dword ptr [esi + 0x10c], 0x7cf80
            //   7607                 | jbe                 9

        $sequence_12 = { ff15???????? 48 83c420 c7437800000000 48 83ec20 }
            // n = 6, score = 100
            //   ff15????????         |                     
            //   48                   | dec                 eax
            //   83c420               | add                 esp, 0x20
            //   c7437800000000       | mov                 dword ptr [ebx + 0x78], 0
            //   48                   | dec                 eax
            //   83ec20               | sub                 esp, 0x20

        $sequence_13 = { 0396a0010000 01da 80beb001000001 7502 }
            // n = 4, score = 100
            //   0396a0010000         | add                 edx, dword ptr [esi + 0x1a0]
            //   01da                 | add                 edx, ebx
            //   80beb001000001       | cmp                 byte ptr [esi + 0x1b0], 1
            //   7502                 | jne                 4

        $sequence_14 = { 6800300000 6800100000 6a00 ff15???????? 83f800 7502 ebe5 }
            // n = 7, score = 100
            //   6800300000           | push                0x3000
            //   6800100000           | push                0x1000
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   83f800               | cmp                 eax, 0
            //   7502                 | jne                 4
            //   ebe5                 | jmp                 0xffffffe7

    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
}