rule win_typehash_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.typehash."
        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.typehash"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { 8b0d???????? 8bf9 3bc7 7302 8bf8 }
            // n = 5, score = 100
            //   8b0d????????         |                     
            //   8bf9                 | mov                 edi, ecx
            //   3bc7                 | cmp                 eax, edi
            //   7302                 | jae                 4
            //   8bf8                 | mov                 edi, eax

        $sequence_1 = { 03f0 3bc8 8974243c 8bf8 7263 8b35???????? }
            // n = 6, score = 100
            //   03f0                 | add                 esi, eax
            //   3bc8                 | cmp                 ecx, eax
            //   8974243c             | mov                 dword ptr [esp + 0x3c], esi
            //   8bf8                 | mov                 edi, eax
            //   7263                 | jb                  0x65
            //   8b35????????         |                     

        $sequence_2 = { 83e61f 8b0485e03d4100 8b04f0 83f8ff 7404 85c0 7503 }
            // n = 7, score = 100
            //   83e61f               | and                 esi, 0x1f
            //   8b0485e03d4100       | mov                 eax, dword ptr [eax*4 + 0x413de0]
            //   8b04f0               | mov                 eax, dword ptr [eax + esi*8]
            //   83f8ff               | cmp                 eax, -1
            //   7404                 | je                  6
            //   85c0                 | test                eax, eax
            //   7503                 | jne                 5

        $sequence_3 = { 74e7 3b4614 77e2 8b4e1c 5f 5e 5d }
            // n = 7, score = 100
            //   74e7                 | je                  0xffffffe9
            //   3b4614               | cmp                 eax, dword ptr [esi + 0x14]
            //   77e2                 | ja                  0xffffffe4
            //   8b4e1c               | mov                 ecx, dword ptr [esi + 0x1c]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp

        $sequence_4 = { c68424cc00000001 e8???????? 8b44241c 3d00280000 7312 68???????? e8???????? }
            // n = 7, score = 100
            //   c68424cc00000001     | mov                 byte ptr [esp + 0xcc], 1
            //   e8????????           |                     
            //   8b44241c             | mov                 eax, dword ptr [esp + 0x1c]
            //   3d00280000           | cmp                 eax, 0x2800
            //   7312                 | jae                 0x14
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_5 = { c705????????01000000 50 a3???????? e8???????? 8db64c2c4100 }
            // n = 5, score = 100
            //   c705????????01000000     |     
            //   50                   | push                eax
            //   a3????????           |                     
            //   e8????????           |                     
            //   8db64c2c4100         | lea                 esi, dword ptr [esi + 0x412c4c]

        $sequence_6 = { 8d4c2418 e8???????? 84c0 7427 }
            // n = 4, score = 100
            //   8d4c2418             | lea                 ecx, dword ptr [esp + 0x18]
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7427                 | je                  0x29

        $sequence_7 = { 8b0d???????? 3d00280000 895c2424 7211 51 6800280000 8d4c2418 }
            // n = 7, score = 100
            //   8b0d????????         |                     
            //   3d00280000           | cmp                 eax, 0x2800
            //   895c2424             | mov                 dword ptr [esp + 0x24], ebx
            //   7211                 | jb                  0x13
            //   51                   | push                ecx
            //   6800280000           | push                0x2800
            //   8d4c2418             | lea                 ecx, dword ptr [esp + 0x18]

        $sequence_8 = { 68d0070000 ff15???????? b940000000 33c0 bf???????? f3ab 8bc5 }
            // n = 7, score = 100
            //   68d0070000           | push                0x7d0
            //   ff15????????         |                     
            //   b940000000           | mov                 ecx, 0x40
            //   33c0                 | xor                 eax, eax
            //   bf????????           |                     
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8bc5                 | mov                 eax, ebp

        $sequence_9 = { 8d4c2430 e8???????? 6a01 8d4c2450 c68424cc00000001 e8???????? bf???????? }
            // n = 7, score = 100
            //   8d4c2430             | lea                 ecx, dword ptr [esp + 0x30]
            //   e8????????           |                     
            //   6a01                 | push                1
            //   8d4c2450             | lea                 ecx, dword ptr [esp + 0x50]
            //   c68424cc00000001     | mov                 byte ptr [esp + 0xcc], 1
            //   e8????????           |                     
            //   bf????????           |                     

    condition:
        7 of them and filesize < 180224
}

rule win_typehash_w0 {
    meta:
        author = "Jeff White (karttoon@gmail.com) @noottrak"
        date = "15APR2020"
        hash = "d81ba465fe59e7d600f7ab0e8161246a5badd8ae2c3084f76442fb49f6585e95"
        description = "Detects an observed Negastealer campaign payload"
        source = "https://github.com/karttoon/iocs/blob/899dac6045a73045baa8966a16b7402d625ee26b/Negasteal/troj_win_negasteal.yar"

        malpedia_rule_date = "20200817"
        malpedia_hash = ""
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.typehash"
        malpedia_version = "20201007"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    strings:
	    $s1 = "Mozilla/5.0 (Windows NT 5.2) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.122 Safari/534.30"
	    $s2 = "news.php"
	    $s3 = "http://%s/%s"
	    $s4 = "type=0"
	    $s5 = "time=%s"
    condition:
	    all of them
}