SYMBOLCOMMON_NAMEaka. SYNONYMS
win.domino (Back to overview)

Minodo

VTCollection    

Since late February 2023, Minodo Backdoor campaigns have been employed to deliver either the Project Nemesis information stealer or more sophisticated backdoors like Cobalt Strike. This backdoor collects basic system information, which it then transmits to the C2 server. In return, it receives an AES-encrypted payload. Notably, the Minodo Backdoor is designed to contact a different C2 address for domain-joined systems. This suggests that more capable backdoors, such as Cobalt Strike, are downloaded on higher-value targets instead of Project Nemesis.

References
2023-04-14Security IntelligenceCharlotte Hammond, Ole Villadsen
Ex-Conti and FIN7 Actors Collaborate with New Domino Backdoor
Minodo
2023-04-14IBMCharlotte Hammond, Ole Villadsen
Ex-Conti and FIN7 Actors Collaborate with New Domino Backdoor
Minodo Nemesis
Yara Rules
[TLP:WHITE] win_domino_auto (20251219 | Detects win.domino.)
rule win_domino_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-01-05"
        version = "1"
        description = "Detects win.domino."
        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.domino"
        malpedia_rule_date = "20260105"
        malpedia_hash = "19b79e7cab4eaf532122e5b45a77dd8f6bb5cc79"
        malpedia_version = "20251219"
        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 = { 41b800300000 488bd6 33c9 4c8bf6 ff15???????? }
            // n = 5, score = 200
            //   41b800300000         | mov                 ecx, edi
            //   488bd6               | test                eax, eax
            //   33c9                 | jle                 0x2eb
            //   4c8bf6               | mov                 edx, eax
            //   ff15????????         |                     

        $sequence_1 = { 488bd1 b940000000 ff15???????? 448b442438 }
            // n = 4, score = 200
            //   488bd1               | mov                 eax, 0x8664
            //   b940000000           | dec                 ebp
            //   ff15????????         |                     
            //   448b442438           | mov                 esp, eax

        $sequence_2 = { 7509 488b5b08 483b1f 75e9 }
            // n = 4, score = 200
            //   7509                 | inc                 ebp
            //   488b5b08             | xor                 ecx, ecx
            //   483b1f               | dec                 eax
            //   75e9                 | lea                 eax, [esp + 0x50]

        $sequence_3 = { 488b4de7 ff15???????? 488b4def 33d2 ff15???????? 4c8d9c24a0000000 8bc3 }
            // n = 7, score = 200
            //   488b4de7             | dec                 eax
            //   ff15????????         |                     
            //   488b4def             | lea                 eax, [esp + 0x22]
            //   33d2                 | dec                 eax
            //   ff15????????         |                     
            //   4c8d9c24a0000000     | sub                 ebx, eax
            //   8bc3                 | dec                 eax

        $sequence_4 = { 488d942450010000 b904010000 ff15???????? 4c8d4c2440 }
            // n = 4, score = 200
            //   488d942450010000     | dec                 eax
            //   b904010000           | mov                 ecx, eax
            //   ff15????????         |                     
            //   4c8d4c2440           | dec                 eax

        $sequence_5 = { 7518 66c7030206 ff15???????? 894302 b806000000 e9???????? }
            // n = 6, score = 200
            //   7518                 | mov                 ecx, ebp
            //   66c7030206           | inc                 ecx
            //   ff15????????         |                     
            //   894302               | add                 esi, esp
            //   b806000000           | dec                 esp
            //   e9????????           |                     

        $sequence_6 = { 750f 66c7030101 b802000000 e9???????? 488d942450010000 b904010000 ff15???????? }
            // n = 7, score = 200
            //   750f                 | mov                 byte ptr [eax], 0
            //   66c7030101           | dec                 eax
            //   b802000000           | inc                 eax
            //   e9????????           |                     
            //   488d942450010000     | je                  0x186e
            //   b904010000           | dec                 eax
            //   ff15????????         |                     

        $sequence_7 = { ff15???????? 85c0 7434 488b4d7f }
            // n = 4, score = 200
            //   ff15????????         |                     
            //   85c0                 | mov                 eax, 6
            //   7434                 | mov                 word ptr [ebx], 0x702
            //   488b4d7f             | jmp                 0x19e

        $sequence_8 = { ff15???????? 488bf0 4885c0 7513 66c7030203 ff15???????? }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   488bf0               | dec                 esp
            //   4885c0               | lea                 edx, [esp + 0x20]
            //   7513                 | inc                 esp
            //   66c7030203           | mov                 byte ptr [esp + eax + 0x20], al
            //   ff15????????         |                     

        $sequence_9 = { ff15???????? 488bcf 894302 ff15???????? }
            // n = 4, score = 200
            //   ff15????????         |                     
            //   488bcf               | cmp                 word ptr [edi + 4], ax
            //   894302               | jne                 0x12c
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 50176
}
Download all Yara Rules