SYMBOLCOMMON_NAMEaka. SYNONYMS
win.industrial_spy (Back to overview)

Industrial Spy


A ransomware that emerged in April 2022.

References
2022-08-01ZscalerAtinderpal Singh
@online{singh:20220801:technical:ab3b0b8, author = {Atinderpal Singh}, title = {{Technical Analysis of Industrial Spy Ransomware}}, date = {2022-08-01}, organization = {Zscaler}, url = {https://www.zscaler.com/blogs/security-research/technical-analysis-industrial-spy-ransomware}, language = {English}, urldate = {2022-08-02} } Technical Analysis of Industrial Spy Ransomware
Industrial Spy
Yara Rules
[TLP:WHITE] win_industrial_spy_auto (20230125 | Detects win.industrial_spy.)
rule win_industrial_spy_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.industrial_spy."
        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.industrial_spy"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 2bf3 7421 8bc3 488d142b 4c2bc0 8bce }
            // n = 6, score = 100
            //   2bf3                 | dec                 eax
            //   7421                 | mov                 ebx, eax
            //   8bc3                 | test                eax, eax
            //   488d142b             | je                  0x19af
            //   4c2bc0               | dec                 esp
            //   8bce                 | lea                 eax, [ebp + 0x1c0]

        $sequence_1 = { 451bd2 4423d2 4c2bc6 79d7 488b9c2440020000 4881c400020000 }
            // n = 6, score = 100
            //   451bd2               | cmp                 edi, 0x400
            //   4423d2               | ja                  0x9b8
            //   4c2bc6               | dec                 esp
            //   79d7                 | mov                 esp, esi
            //   488b9c2440020000     | dec                 esp
            //   4881c400020000       | mov                 dword ptr [ebp - 0x51], ebp

        $sequence_2 = { 488d15771a0200 448bcb bb01000000 448bc3 ff15???????? 488364243000 488d0de1c90100 }
            // n = 7, score = 100
            //   488d15771a0200       | dec                 eax
            //   448bcb               | sub                 esp, 0x20
            //   bb01000000           | dec                 eax
            //   448bc3               | lea                 ebx, [0x1b42b]
            //   ff15????????         |                     
            //   488364243000         | pop                 edi
            //   488d0de1c90100       | ret                 

        $sequence_3 = { 4883ec20 8bd9 4c8d0d491c0100 b902000000 4c8d05351c0100 }
            // n = 5, score = 100
            //   4883ec20             | dec                 eax
            //   8bd9                 | lea                 ecx, [ebp + 0xe0]
            //   4c8d0d491c0100       | inc                 ecx
            //   b902000000           | mov                 ecx, 0x80
            //   4c8d05351c0100       | dec                 esp

        $sequence_4 = { 4c8d1ddfefffff 488be9 4533d2 470fb68c1a50ff0100 }
            // n = 4, score = 100
            //   4c8d1ddfefffff       | mov                 dword ptr [esp + 0x20], ebx
            //   488be9               | dec                 esp
            //   4533d2               | lea                 ecx, [esp + 0x918]
            //   470fb68c1a50ff0100     | inc    ecx

        $sequence_5 = { e8???????? 488b9550010000 488d4df0 458bce 4a8d1cb500000000 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   488b9550010000       | dec                 esp
            //   488d4df0             | mov                 esi, ecx
            //   458bce               | dec                 eax
            //   4a8d1cb500000000     | sub                 esp, 0x90

        $sequence_6 = { c784242401000065006700 c78424280100002e007200 c784242c01000067007300 c78424300100002e007300 c784243401000063007200 c78424380100002e007300 c784243c01000063007400 }
            // n = 7, score = 100
            //   c784242401000065006700     | inc    ecx
            //   c78424280100002e007200     | or    eax, eax
            //   c784242c01000067007300     | add    eax, dword ptr [ebp - 0x34]
            //   c78424300100002e007300     | add    edx, eax
            //   c784243401000063007200     | inc    ecx
            //   c78424380100002e007300     | mov    eax, edx
            //   c784243c01000063007400     | not    eax

        $sequence_7 = { 412bd8 03c1 894714 3bf3 }
            // n = 4, score = 100
            //   412bd8               | test                eax, eax
            //   03c1                 | xor                 edx, edx
            //   894714               | dec                 ecx
            //   3bf3                 | mov                 edi, eax

        $sequence_8 = { 85f6 488d8f00010000 448bc6 480f45eb 488bd5 e8???????? 488b5c2430 }
            // n = 7, score = 100
            //   85f6                 | mov                 dword ptr [esp + 0x168], 0x620076
            //   488d8f00010000       | mov                 dword ptr [esp + 0x16c], 0x2e0073
            //   448bc6               | mov                 dword ptr [esp + 0x15c], 0x2e0062
            //   480f45eb             | mov                 dword ptr [esp + 0x160], 0x620076
            //   488bd5               | mov                 dword ptr [esp + 0x164], 0x2e0065
            //   e8????????           |                     
            //   488b5c2430           | mov                 dword ptr [esp + 0x168], 0x620076

        $sequence_9 = { 41b801010000 e8???????? 418bc6 4d8d4d10 4c8d3d40470100 41be04000000 }
            // n = 6, score = 100
            //   41b801010000         | xorps               xmm0, xmm0
            //   e8????????           |                     
            //   418bc6               | movups              xmmword ptr [esp + 0x1e8], xmm0
            //   4d8d4d10             | dec                 eax
            //   4c8d3d40470100       | lea                 edx, [esp + 0x928]
            //   41be04000000         | dec                 eax

    condition:
        7 of them and filesize < 339968
}
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