rule win_sakula_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.sakula_rat."
        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.sakula_rat"
        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 = { 6a00 6800010000 6a00 6a00 68???????? }
            // n = 5, score = 300
            //   6a00                 | mov                 dword ptr [esp + 0x28], edi
            //   6800010000           | dec                 eax
            //   6a00                 | mov                 dword ptr [esp + 0x20], ebx
            //   6a00                 | xor                 ecx, ecx
            //   68????????           |                     

        $sequence_1 = { 83c404 a1???????? 8b0d???????? 8b15???????? }
            // n = 4, score = 200
            //   83c404               | push                dword ptr [ebp + 8]
            //   a1????????           |                     
            //   8b0d????????         |                     
            //   8b15????????         |                     

        $sequence_2 = { 57 53 e8???????? 56 e8???????? 83c434 }
            // n = 6, score = 200
            //   57                   | cmp                 eax, 0
            //   53                   | je                  0x1a0
            //   e8????????           |                     
            //   56                   | mov                 dword ptr [eax], 0xc
            //   e8????????           |                     
            //   83c434               | mov                 dword ptr [eax + 8], 1

        $sequence_3 = { a1???????? 33c4 89842450020000 53 33db }
            // n = 5, score = 200
            //   a1????????           |                     
            //   33c4                 | push                0xfde9
            //   89842450020000       | push                eax
            //   53                   | push                eax
            //   33db                 | mov                 dword ptr [ebp - 4], eax

        $sequence_4 = { 8bf9 6800000080 57 ff15???????? }
            // n = 4, score = 200
            //   8bf9                 | push                0
            //   6800000080           | push                0x100
            //   57                   | push                0
            //   ff15????????         |                     

        $sequence_5 = { 6a01 ffd7 85c0 56 }
            // n = 4, score = 200
            //   6a01                 | mov                 eax, dword ptr [ebp - 8]
            //   ffd7                 | push                dword ptr [eax]
            //   85c0                 | cmp                 eax, 0
            //   56                   | je                  0x86

        $sequence_6 = { 3c56 7405 3456 880411 }
            // n = 4, score = 200
            //   3c56                 | add                 esp, 8
            //   7405                 | cmp                 eax, 0
            //   3456                 | jne                 0x12
            //   880411               | xor                 eax, eax

        $sequence_7 = { e8???????? 83c40c 6a00 6a00 57 53 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   83c40c               | push                0x2cc
            //   6a00                 | mov                 dword ptr [ebp - 0x28], eax
            //   6a00                 | push                1
            //   57                   | push                0
            //   53                   | lea                 eax, [ebp - 0x24]

        $sequence_8 = { 68e9fd0000 e8???????? 50 50 }
            // n = 4, score = 100
            //   68e9fd0000           | lea                 eax, [ebp - 8]
            //   e8????????           |                     
            //   50                   | push                eax
            //   50                   | push                dword ptr [ebp - 4]

        $sequence_9 = { ff15???????? 8364245800 ff15???????? 488d542458 488bc8 ff15???????? }
            // n = 6, score = 100
            //   ff15????????         |                     
            //   8364245800           | int3                
            //   ff15????????         |                     
            //   488d542458           | dec                 eax
            //   488bc8               | mov                 ebx, dword ptr [esp + 0x50]
            //   ff15????????         |                     

        $sequence_10 = { 488d55e0 4533c9 4533c0 33c9 c744242804000000 895c2420 ff15???????? }
            // n = 7, score = 100
            //   488d55e0             | dec                 eax
            //   4533c9               | mov                 dword ptr [ebp - 1], ebx
            //   4533c0               | dec                 eax
            //   33c9                 | lea                 edx, [ebp - 0x20]
            //   c744242804000000     | inc                 ebp
            //   895c2420             | xor                 ecx, ecx
            //   ff15????????         |                     

        $sequence_11 = { 6858020000 8b45fc 052c010000 50 e8???????? eb02 }
            // n = 6, score = 100
            //   6858020000           | xor                 ebx, ebx
            //   8b45fc               | xor                 eax, eax
            //   052c010000           | dec                 eax
            //   50                   | mov                 eax, dword ptr [ecx]
            //   e8????????           |                     
            //   eb02                 | call                dword ptr [eax + 0x28]

        $sequence_12 = { 8b45f8 ff30 e8???????? 83f800 0f847b000000 68cc020000 e8???????? }
            // n = 7, score = 100
            //   8b45f8               | push                0
            //   ff30                 | push                0x100
            //   e8????????           |                     
            //   83f800               | push                0
            //   0f847b000000         | push                0
            //   68cc020000           | mov                 dword ptr [ebp - 0x18], eax
            //   e8????????           |                     

        $sequence_13 = { e8???????? 8945e8 83f800 0f84a8000000 83f8ff 0f849f000000 8d45f8 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8945e8               | dec                 eax
            //   83f800               | mov                 dword ptr [ebp + 7], ebx
            //   0f84a8000000         | and                 dword ptr [esp + 0x58], 0
            //   83f8ff               | dec                 eax
            //   0f849f000000         | lea                 edx, [esp + 0x58]
            //   8d45f8               | dec                 eax

        $sequence_14 = { 448d4260 e8???????? 33db 33c0 }
            // n = 4, score = 100
            //   448d4260             | dec                 eax
            //   e8????????           |                     
            //   33db                 | and                 dword ptr [esp + 0x20], 0
            //   33c0                 | and                 dword ptr [esp + 0x58], 0

        $sequence_15 = { a3???????? 50 ff75fc e8???????? 58 c9 c3 }
            // n = 7, score = 100
            //   a3????????           |                     
            //   50                   | mov                 ecx, eax
            //   ff75fc               | dec                 eax
            //   e8????????           |                     
            //   58                   | mov                 esi, dword ptr [eax + 8]
            //   c9                   | inc                 esp
            //   c3                   | lea                 eax, [edx + 0x60]

        $sequence_16 = { 33c9 448bc8 897c2428 48895c2420 ff15???????? }
            // n = 5, score = 100
            //   33c9                 | mov                 dword ptr [esp + 0x28], 4
            //   448bc8               | mov                 dword ptr [esp + 0x20], ebx
            //   897c2428             | xor                 ecx, ecx
            //   48895c2420           | mov                 edi, eax
            //   ff15????????         |                     

        $sequence_17 = { e8???????? 33c9 ff15???????? cc 488b5c2450 488b742460 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   33c9                 | xor                 eax, eax
            //   ff15????????         |                     
            //   cc                   | dec                 eax
            //   488b5c2450           | lea                 ecx, [ebp - 0x1e]
            //   488b742460           | xor                 edx, edx

        $sequence_18 = { e8???????? 488bce c745e770000000 c7451705000000 48895dff }
            // n = 5, score = 100
            //   e8????????           |                     
            //   488bce               | dec                 eax
            //   c745e770000000       | mov                 ecx, esi
            //   c7451705000000       | mov                 dword ptr [ebp - 0x19], 0x70
            //   48895dff             | mov                 dword ptr [ebp + 0x17], 5

        $sequence_19 = { 33c9 ff15???????? 8bf8 8d5c0008 ff15???????? }
            // n = 5, score = 100
            //   33c9                 | inc                 ebp
            //   ff15????????         |                     
            //   8bf8                 | xor                 eax, eax
            //   8d5c0008             | xor                 ecx, ecx
            //   ff15????????         |                     

        $sequence_20 = { 50 ff7508 e8???????? 83c408 83f800 7506 31c0 }
            // n = 7, score = 100
            //   50                   | cmp                 eax, esi
            //   ff7508               | je                  0x81
            //   e8????????           |                     
            //   83c408               | dec                 esp
            //   83f800               | lea                 ecx, [ebp - 0x29]
            //   7506                 | dec                 esp
            //   31c0                 | lea                 eax, [0x1d79]

        $sequence_21 = { 33c0 488d4de2 33d2 41b8ce070000 c744247068000000 c745ac01000000 66895db0 }
            // n = 7, score = 100
            //   33c0                 | lea                 ebx, [eax + eax + 8]
            //   488d4de2             | xor                 ecx, ecx
            //   33d2                 | inc                 esp
            //   41b8ce070000         | mov                 ecx, eax
            //   c744247068000000     | mov                 dword ptr [esp + 0x28], edi
            //   c745ac01000000       | dec                 eax
            //   66895db0             | mov                 dword ptr [esp + 0x20], ebx

        $sequence_22 = { 8945d8 6a01 e8???????? 6a00 8d45dc }
            // n = 5, score = 100
            //   8945d8               | cmp                 eax, 0
            //   6a01                 | je                  0xb4
            //   e8????????           |                     
            //   6a00                 | cmp                 eax, -1
            //   8d45dc               | je                  0xb4

    condition:
        7 of them and filesize < 229376
}

/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/
rule win_sakula_rat_w0 {
    meta:
        description = "Sakula v1.0"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "=%s&type=%d"
        $m4 = "?photoid="
        $m5 = "iexplorer"
                $m6 = "net start \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"

    condition:
        all of ($m*) and not $v1_1
}

/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_sakula_rat_w1 {
    meta:
        description = "Sakula v1.1"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "=%s&type=%d"
        $m4 = "?photoid="
        $m5 = "iexplorer"
                $m6 = "net start \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"

    condition:
        all of them
}

/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/


rule win_sakula_rat_w2 {
    meta:
        description = "Sakula v1.2"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""
        $v1_1 = "MicroPlayerUpdate.exe"
        $v1_2 = "CCPUpdate"

    condition:
        $m1 and $m2 and $m3 and $v1_2 and not $v1_1
}

/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/


rule win_sakula_rat_w3 {
    meta:
        description = "Sakula v1.3"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""

        $v1_3 = { 81 3E 78 03 00 00 75 57  8D 54 24 14 52 68 0C 05 41 00 68 01 00 00 80 FF  15 00 F0 40 00 85 C0 74 10 8B 44 24 14 68 2C 31  41 00 50 FF 15 10 F0 40 00 8B 4C 24 14 51 FF 15  24 F0 40 00 E8 0F 09 00 }

    condition:
        all of them
}

/*
    This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as    long as you use it under this license.

*/

rule win_sakula_rat_w4 {
    meta:
        description = "Sakula v1.4"
        date = "2015-10-13"
        author = "Airbus Defence and Space Cybersecurity CSIRT - Yoann Francou"
		source = "https://github.com/mattulm/sfiles_yara/blob/master/malware/Sakula.yar"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sakula_rat"
        malpedia_version = "20170517"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $m1 = "%d_of_%d_for_%s_on_%s"
        $m2 = "/c ping 127.0.0.1 & del /q \"%s\""
        $m3 = "cmd.exe /c rundll32 \"%s\""

        $v1_4 = { 50 E8 CD FC FF FF 83 C4  04 68 E8 03 00 00 FF D7 56 E8 54 12 00 00 E9 AE  FE FF FF E8 13 F5 FF FF }

    condition:
        all of them
}