rule win_woolger_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.woolger"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 8b550c 8b4508 8b0d???????? 57 52 }
            // n = 5, score = 200
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b0d????????         |                     
            //   57                   | push                edi
            //   52                   | push                edx

        $sequence_1 = { e9???????? 83f825 750a be???????? e9???????? 83f826 }
            // n = 6, score = 200
            //   e9????????           |                     
            //   83f825               | cmp                 eax, 0x25
            //   750a                 | jne                 0xc
            //   be????????           |                     
            //   e9????????           |                     
            //   83f826               | cmp                 eax, 0x26

        $sequence_2 = { ffd7 68???????? 56 8985f4f4ffff ffd7 8dbdfcf8ffff 8985f8f4ffff }
            // n = 7, score = 200
            //   ffd7                 | call                edi
            //   68????????           |                     
            //   56                   | push                esi
            //   8985f4f4ffff         | mov                 dword ptr [ebp - 0xb0c], eax
            //   ffd7                 | call                edi
            //   8dbdfcf8ffff         | lea                 edi, [ebp - 0x704]
            //   8985f8f4ffff         | mov                 dword ptr [ebp - 0xb08], eax

        $sequence_3 = { 83c40c 8bc8 8a10 40 84d2 75f9 8dbdfcf8ffff }
            // n = 7, score = 200
            //   83c40c               | add                 esp, 0xc
            //   8bc8                 | mov                 ecx, eax
            //   8a10                 | mov                 dl, byte ptr [eax]
            //   40                   | inc                 eax
            //   84d2                 | test                dl, dl
            //   75f9                 | jne                 0xfffffffb
            //   8dbdfcf8ffff         | lea                 edi, [ebp - 0x704]

        $sequence_4 = { a1???????? 8b0d???????? 8995fcfeffff 0fb615???????? }
            // n = 4, score = 200
            //   a1????????           |                     
            //   8b0d????????         |                     
            //   8995fcfeffff         | mov                 dword ptr [ebp - 0x104], edx
            //   0fb615????????       |                     

        $sequence_5 = { 57 0fb7d6 6a02 52 ff15???????? }
            // n = 5, score = 200
            //   57                   | push                edi
            //   0fb7d6               | movzx               edx, si
            //   6a02                 | push                2
            //   52                   | push                edx
            //   ff15????????         |                     

        $sequence_6 = { 50 f3a4 ff15???????? 6a00 ff15???????? 6a00 }
            // n = 6, score = 200
            //   50                   | push                eax
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   ff15????????         |                     
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   6a00                 | push                0

        $sequence_7 = { 52 ff15???????? e8???????? bf???????? e8???????? bf???????? }
            // n = 6, score = 200
            //   52                   | push                edx
            //   ff15????????         |                     
            //   e8????????           |                     
            //   bf????????           |                     
            //   e8????????           |                     
            //   bf????????           |                     

        $sequence_8 = { ffd6 2480 3c80 6a14 0f9485f5feffff }
            // n = 5, score = 200
            //   ffd6                 | call                esi
            //   2480                 | and                 al, 0x80
            //   3c80                 | cmp                 al, 0x80
            //   6a14                 | push                0x14
            //   0f9485f5feffff       | sete                byte ptr [ebp - 0x10b]

        $sequence_9 = { 51 8b4f04 8d95f0feffff 52 8b17 8d85fcfeffff 50 }
            // n = 7, score = 200
            //   51                   | push                ecx
            //   8b4f04               | mov                 ecx, dword ptr [edi + 4]
            //   8d95f0feffff         | lea                 edx, [ebp - 0x110]
            //   52                   | push                edx
            //   8b17                 | mov                 edx, dword ptr [edi]
            //   8d85fcfeffff         | lea                 eax, [ebp - 0x104]
            //   50                   | push                eax

    condition:
        7 of them and filesize < 196608
}

/*
	Yara Rule Set
	Author: Florian Roth
	Date: 2015-09-01
	Identifier: Rocket Kitten Keylogger
*/
rule win_woolger_w0 {
	meta:
		description = "Detects Keylogger used in Rocket Kitten APT"
		author = "Florian Roth"
		reference = "https://goo.gl/SjQhlp"
		date = "2015-09-01"
		super_rule = 1
		hash1 = "1c9e519dca0468a87322bebe2a06741136de7969a4eb3efda0ab8db83f0807b4"
		hash2 = "495a15f9f30d6f6096a97c2bd8cc5edd4d78569b8d541b1d5a64169f8109bc5b"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.woolger"
        malpedia_version = "20170521"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
	strings:
		$x1 = "\\Release\\CWoolger.pdb" ascii
		$x2 = "WoolenLoger\\obj\\x86\\Release" ascii
		$x3 = "D:\\Yaser Logers\\"
		$z1 = "woolger" fullword wide
		$s1 = "oShellLink.TargetPath = \"" fullword ascii
		$s2 = "wscript.exe " fullword ascii
		$s3 = "strSTUP = WshShell.SpecialFolders(\"Startup\")" fullword ascii
		$s4 = "[CapsLock]" fullword ascii
	condition:
		/* File detection */
		(uint16(0) == 0x5a4d and filesize < 200KB and (1 of ($x*) or ($z1 and 2 of ($s*)))) or
		/* Memory detection */
		($z1 and all of ($s*)) 
}