rule win_listrix_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.listrix."
        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.listrix"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 66894c2464 ff15???????? 83f803 0f85b4000000 6aff 6a00 }
            // n = 6, score = 100
            //   66894c2464           | mov                 word ptr [esp + 0x64], cx
            //   ff15????????         |                     
            //   83f803               | cmp                 eax, 3
            //   0f85b4000000         | jne                 0xba
            //   6aff                 | push                -1
            //   6a00                 | push                0

        $sequence_1 = { 8bc7 c1f805 c1e606 033485e0ad4000 8b45f8 8b00 }
            // n = 6, score = 100
            //   8bc7                 | mov                 eax, edi
            //   c1f805               | sar                 eax, 5
            //   c1e606               | shl                 esi, 6
            //   033485e0ad4000       | add                 esi, dword ptr [eax*4 + 0x40ade0]
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   8b00                 | mov                 eax, dword ptr [eax]

        $sequence_2 = { ff44240c d16c2408 0f8503ffffff 8b35???????? 68???????? }
            // n = 5, score = 100
            //   ff44240c             | inc                 dword ptr [esp + 0xc]
            //   d16c2408             | shr                 dword ptr [esp + 8], 1
            //   0f8503ffffff         | jne                 0xffffff09
            //   8b35????????         |                     
            //   68????????           |                     

        $sequence_3 = { 68???????? ff15???????? 68d0070000 ffd6 }
            // n = 4, score = 100
            //   68????????           |                     
            //   ff15????????         |                     
            //   68d0070000           | push                0x7d0
            //   ffd6                 | call                esi

        $sequence_4 = { e8???????? ff15???????? c1e802 89442408 }
            // n = 4, score = 100
            //   e8????????           |                     
            //   ff15????????         |                     
            //   c1e802               | shr                 eax, 2
            //   89442408             | mov                 dword ptr [esp + 8], eax

        $sequence_5 = { 33c4 89842460010000 56 8b35???????? 68d0070000 ffd6 68dc050000 }
            // n = 7, score = 100
            //   33c4                 | xor                 eax, esp
            //   89842460010000       | mov                 dword ptr [esp + 0x160], eax
            //   56                   | push                esi
            //   8b35????????         |                     
            //   68d0070000           | push                0x7d0
            //   ffd6                 | call                esi
            //   68dc050000           | push                0x5dc

        $sequence_6 = { 6a00 6a00 8d95e4f9ffff 52 ff15???????? }
            // n = 5, score = 100
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   8d95e4f9ffff         | lea                 edx, [ebp - 0x61c]
            //   52                   | push                edx
            //   ff15????????         |                     

        $sequence_7 = { 8d85f4fdffff 50 6a00 ff15???????? 85c0 0f84a4000000 }
            // n = 6, score = 100
            //   8d85f4fdffff         | lea                 eax, [ebp - 0x20c]
            //   50                   | push                eax
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f84a4000000         | je                  0xaa

        $sequence_8 = { 8d8d78f5ffff 51 8d141b 52 8d85f4fbffff 50 56 }
            // n = 7, score = 100
            //   8d8d78f5ffff         | lea                 ecx, [ebp - 0xa88]
            //   51                   | push                ecx
            //   8d141b               | lea                 edx, [ebx + ebx]
            //   52                   | push                edx
            //   8d85f4fbffff         | lea                 eax, [ebp - 0x40c]
            //   50                   | push                eax
            //   56                   | push                esi

        $sequence_9 = { 51 8d141b 52 8d85f4fbffff 50 }
            // n = 5, score = 100
            //   51                   | push                ecx
            //   8d141b               | lea                 edx, [ebx + ebx]
            //   52                   | push                edx
            //   8d85f4fbffff         | lea                 eax, [ebp - 0x40c]
            //   50                   | push                eax

    condition:
        7 of them and filesize < 106496
}

rule win_listrix_w0 {
    meta:
        author = "Florian Roth"
        reference = "https://www.symantec.com/connect/blogs/dragonfly-western-energy-sector-targeted-sophisticated-attack-group"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.listrix"
        malpedia_version = "20180301"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $s1 = "\\Update\\Temp\\ufiles.txt" fullword wide
        $s2 = "%02d.%02d.%04d %02d:%02d" fullword wide
        $s3 = "*pass*.*" fullword wide
    condition:
        all of them
}