rule win_jripbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.jripbot."
        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.jripbot"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { ff15???????? 50 ff15???????? 89442410 85c0 7511 56 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   50                   | push                eax
            //   ff15????????         |                     
            //   89442410             | mov                 dword ptr [esp + 0x10], eax
            //   85c0                 | test                eax, eax
            //   7511                 | jne                 0x13
            //   56                   | push                esi

        $sequence_1 = { ff7368 e8???????? 8b436c 83c424 83c010 e8???????? }
            // n = 6, score = 100
            //   ff7368               | push                dword ptr [ebx + 0x68]
            //   e8????????           |                     
            //   8b436c               | mov                 eax, dword ptr [ebx + 0x6c]
            //   83c424               | add                 esp, 0x24
            //   83c010               | add                 eax, 0x10
            //   e8????????           |                     

        $sequence_2 = { 895c2424 85db 7527 03ff 8b442418 7407 c60000 }
            // n = 7, score = 100
            //   895c2424             | mov                 dword ptr [esp + 0x24], ebx
            //   85db                 | test                ebx, ebx
            //   7527                 | jne                 0x29
            //   03ff                 | add                 edi, edi
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   7407                 | je                  9
            //   c60000               | mov                 byte ptr [eax], 0

        $sequence_3 = { 2bc2 d1f8 51 89442460 e8???????? 59 89442430 }
            // n = 7, score = 100
            //   2bc2                 | sub                 eax, edx
            //   d1f8                 | sar                 eax, 1
            //   51                   | push                ecx
            //   89442460             | mov                 dword ptr [esp + 0x60], eax
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   89442430             | mov                 dword ptr [esp + 0x30], eax

        $sequence_4 = { 33c0 e8???????? 8b3d???????? 83c410 33db 85c0 7465 }
            // n = 7, score = 100
            //   33c0                 | xor                 eax, eax
            //   e8????????           |                     
            //   8b3d????????         |                     
            //   83c410               | add                 esp, 0x10
            //   33db                 | xor                 ebx, ebx
            //   85c0                 | test                eax, eax
            //   7465                 | je                  0x67

        $sequence_5 = { e8???????? 50 be???????? e8???????? 50 8d44242c 50 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   50                   | push                eax
            //   be????????           |                     
            //   e8????????           |                     
            //   50                   | push                eax
            //   8d44242c             | lea                 eax, [esp + 0x2c]
            //   50                   | push                eax

        $sequence_6 = { ff7508 8945e4 ffd7 33f6 895de0 395d10 725e }
            // n = 7, score = 100
            //   ff7508               | push                dword ptr [ebp + 8]
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   ffd7                 | call                edi
            //   33f6                 | xor                 esi, esi
            //   895de0               | mov                 dword ptr [ebp - 0x20], ebx
            //   395d10               | cmp                 dword ptr [ebp + 0x10], ebx
            //   725e                 | jb                  0x60

        $sequence_7 = { 75e3 eb06 33d2 85d2 7505 6ad2 58 }
            // n = 7, score = 100
            //   75e3                 | jne                 0xffffffe5
            //   eb06                 | jmp                 8
            //   33d2                 | xor                 edx, edx
            //   85d2                 | test                edx, edx
            //   7505                 | jne                 7
            //   6ad2                 | push                -0x2e
            //   58                   | pop                 eax

        $sequence_8 = { 7418 8bc6 8d7802 668b10 83c002 663bd3 75f5 }
            // n = 7, score = 100
            //   7418                 | je                  0x1a
            //   8bc6                 | mov                 eax, esi
            //   8d7802               | lea                 edi, [eax + 2]
            //   668b10               | mov                 dx, word ptr [eax]
            //   83c002               | add                 eax, 2
            //   663bd3               | cmp                 dx, bx
            //   75f5                 | jne                 0xfffffff7

        $sequence_9 = { 837c240c00 7477 57 ff15???????? a1???????? 8935???????? 85c0 }
            // n = 7, score = 100
            //   837c240c00           | cmp                 dword ptr [esp + 0xc], 0
            //   7477                 | je                  0x79
            //   57                   | push                edi
            //   ff15????????         |                     
            //   a1????????           |                     
            //   8935????????         |                     
            //   85c0                 | test                eax, eax

    condition:
        7 of them and filesize < 507904
}

rule win_jripbot_w0 {
	meta:
		author = "Florian Roth"
		reference = "https://securelist.com/blog/research/71275/wild-neutron-economic-espionage-threat-actor-returns-with-new-tricks/"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.jripbot"
        malpedia_version = "20180301"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
	strings:
		$s0 = "LiveUpdater.exe" fullword wide /* PEStudio Blacklist: strings */ /* score: '25.00' */
		$s1 = "id-at-postalAddress" fullword ascii /* PEStudio Blacklist: strings */ /* score: '18.00' */
		$s2 = "%d -> %d (default)" fullword wide /* PEStudio Blacklist: strings */ /* score: '17.00' */
		$s3 = "%s%s%s=%d,%s=%d,%s=%d," fullword wide /* score: '15.00' */
		$s8 = "id-ce-keyUsage" fullword ascii /* score: '12.00' */
		$s9 = "Key Usage" fullword ascii /* score: '12.00' */
		$s32 = "UPDATE_ID" fullword wide /* PEStudio Blacklist: strings */ /* score: '9.00' */
		$s37 = "id-at-commonName" fullword ascii /* score: '8.00' */
		$s38 = "2008R2" fullword wide /* PEStudio Blacklist: os */ /* score: '8.00' */
		$s39 = "RSA-alt" fullword ascii /* PEStudio Blacklist: strings */ /* score: '8.00' */
		$s40 = "%02d.%04d.%s" fullword wide /* score: '7.02' */
	condition:
		all of them
}