rule win_typehash_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.typehash"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 8a9405ecfcffff ebe3 80a0c03b410000 40 }
            // n = 4, score = 100
            //   8a9405ecfcffff       | mov                 dl, byte ptr [ebp + eax - 0x314]
            //   ebe3                 | jmp                 0xffffffe5
            //   80a0c03b410000       | and                 byte ptr [eax + 0x413bc0], 0
            //   40                   | inc                 eax

        $sequence_1 = { 0f8496020000 8b4c2460 53 53 8d94248c000000 6a03 }
            // n = 6, score = 100
            //   0f8496020000         | je                  0x29c
            //   8b4c2460             | mov                 ecx, dword ptr [esp + 0x60]
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   8d94248c000000       | lea                 edx, [esp + 0x8c]
            //   6a03                 | push                3

        $sequence_2 = { 57 55 8d4c2418 88442418 e8???????? 8a0d???????? }
            // n = 6, score = 100
            //   57                   | push                edi
            //   55                   | push                ebp
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   88442418             | mov                 byte ptr [esp + 0x18], al
            //   e8????????           |                     
            //   8a0d????????         |                     

        $sequence_3 = { 0f84ca000000 8b560c 8b4e08 8d049504000000 50 }
            // n = 5, score = 100
            //   0f84ca000000         | je                  0xd0
            //   8b560c               | mov                 edx, dword ptr [esi + 0xc]
            //   8b4e08               | mov                 ecx, dword ptr [esi + 8]
            //   8d049504000000       | lea                 eax, [edx*4 + 4]
            //   50                   | push                eax

        $sequence_4 = { 83c8ff c20400 83c8ff c3 56 8bf1 e8???????? }
            // n = 7, score = 100
            //   83c8ff               | or                  eax, 0xffffffff
            //   c20400               | ret                 4
            //   83c8ff               | or                  eax, 0xffffffff
            //   c3                   | ret                 
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx
            //   e8????????           |                     

        $sequence_5 = { 7427 48 754b bf???????? 83c9ff 33c0 }
            // n = 6, score = 100
            //   7427                 | je                  0x29
            //   48                   | dec                 eax
            //   754b                 | jne                 0x4d
            //   bf????????           |                     
            //   83c9ff               | or                  ecx, 0xffffffff
            //   33c0                 | xor                 eax, eax

        $sequence_6 = { 51 50 ff561c 83c408 8b460c 47 }
            // n = 6, score = 100
            //   51                   | push                ecx
            //   50                   | push                eax
            //   ff561c               | call                dword ptr [esi + 0x1c]
            //   83c408               | add                 esp, 8
            //   8b460c               | mov                 eax, dword ptr [esi + 0xc]
            //   47                   | inc                 edi

        $sequence_7 = { 33d2 f2ae f7d1 49 c68424c800000001 b31f }
            // n = 6, score = 100
            //   33d2                 | xor                 edx, edx
            //   f2ae                 | repne scasb         al, byte ptr es:[edi]
            //   f7d1                 | not                 ecx
            //   49                   | dec                 ecx
            //   c68424c800000001     | mov                 byte ptr [esp + 0xc8], 1
            //   b31f                 | mov                 bl, 0x1f

        $sequence_8 = { 3bc8 8974243c 8bf8 7263 8b35???????? }
            // n = 5, score = 100
            //   3bc8                 | cmp                 ecx, eax
            //   8974243c             | mov                 dword ptr [esp + 0x3c], esi
            //   8bf8                 | mov                 edi, eax
            //   7263                 | jb                  0x65
            //   8b35????????         |                     

        $sequence_9 = { 83c404 e9???????? 0f86dafeffff 6a02 8d542450 }
            // n = 5, score = 100
            //   83c404               | add                 esp, 4
            //   e9????????           |                     
            //   0f86dafeffff         | jbe                 0xfffffee0
            //   6a02                 | push                2
            //   8d542450             | lea                 edx, [esp + 0x50]

    condition:
        7 of them and filesize < 180224
}

rule win_typehash_w0 {
    meta:
        author  = "Jeff White (karttoon@gmail.com) @noottrak"
        date    = "15APR2020"
        comment = "All hashes in block comment for each change"
        hash01 = "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
}