SYMBOLCOMMON_NAMEaka. SYNONYMS
win.plurox (Back to overview)

Plurox


There is no description at this point.

References
2019-09-23Random REsysopfb
@online{sysopfb:20190923:diving:d62f498, author = {sysopfb}, title = {{Diving into Pluroxs DNS based protection layer}}, date = {2019-09-23}, organization = {Random RE}, url = {https://sysopfb.github.io/malware,/crypters/2019/09/23/Plurox-packer-layer-unpacked.html}, language = {English}, urldate = {2020-01-06} } Diving into Pluroxs DNS based protection layer
Plurox
2019-06-18Kaspersky LabsAnton Kuzmenko
@online{kuzmenko:20190618:plurox:14d4e0d, author = {Anton Kuzmenko}, title = {{Plurox: Modular backdoor}}, date = {2019-06-18}, organization = {Kaspersky Labs}, url = {https://securelist.com/plurox-modular-backdoor/91213/}, language = {English}, urldate = {2019-12-20} } Plurox: Modular backdoor
Plurox
Yara Rules
[TLP:WHITE] win_plurox_auto (20211008 | Detects win.plurox.)
rule win_plurox_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-10-07"
        version = "1"
        description = "Detects win.plurox."
        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.plurox"
        malpedia_rule_date = "20211007"
        malpedia_hash = "e5b790e0f888f252d49063a1251ca60ec2832535"
        malpedia_version = "20211008"
        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 = { 0416 128bc606091a f6870f1a000000 e10d 21c9 8918 }
            // n = 6, score = 100
            //   0416                 | add                 al, 0x16
            //   128bc606091a         | adc                 cl, byte ptr [ebx + 0x1a0906c6]
            //   f6870f1a000000       | test                byte ptr [edi + 0x1a0f], 0
            //   e10d                 | loope               0xf
            //   21c9                 | and                 ecx, ecx
            //   8918                 | mov                 dword ptr [eax], ebx

        $sequence_1 = { 0a20 0816 ec bbf2000000 }
            // n = 4, score = 100
            //   0a20                 | or                  ah, byte ptr [eax]
            //   0816                 | or                  byte ptr [esi], dl
            //   ec                   | in                  al, dx
            //   bbf2000000           | mov                 ebx, 0xf2

        $sequence_2 = { 300f 353e0fee3c 031e 2200 }
            // n = 4, score = 100
            //   300f                 | xor                 byte ptr [edi], cl
            //   353e0fee3c           | xor                 eax, 0x3cee0f3e
            //   031e                 | add                 ebx, dword ptr [esi]
            //   2200                 | and                 al, byte ptr [eax]

        $sequence_3 = { 624a8b 0416 128bc606091a f6870f1a000000 e10d 21c9 }
            // n = 6, score = 100
            //   624a8b               | bound               ecx, qword ptr [edx - 0x75]
            //   0416                 | add                 al, 0x16
            //   128bc606091a         | adc                 cl, byte ptr [ebx + 0x1a0906c6]
            //   f6870f1a000000       | test                byte ptr [edi + 0x1a0f], 0
            //   e10d                 | loope               0xf
            //   21c9                 | and                 ecx, ecx

        $sequence_4 = { 94 f8 21480e 2a15???????? 6f }
            // n = 5, score = 100
            //   94                   | xchg                eax, esp
            //   f8                   | clc                 
            //   21480e               | and                 dword ptr [eax + 0xe], ecx
            //   2a15????????         |                     
            //   6f                   | outsd               dx, dword ptr [esi]

        $sequence_5 = { 6808486409 58 0000 00e4 0487 58 }
            // n = 6, score = 100
            //   6808486409           | push                0x9644808
            //   58                   | pop                 eax
            //   0000                 | add                 byte ptr [eax], al
            //   00e4                 | add                 ah, ah
            //   0487                 | add                 al, 0x87
            //   58                   | pop                 eax

        $sequence_6 = { 0925???????? 0000 c48dcd713240 89f5 }
            // n = 4, score = 100
            //   0925????????         |                     
            //   0000                 | add                 byte ptr [eax], al
            //   c48dcd713240         | les                 ecx, ptr [ebp + 0x403271cd]
            //   89f5                 | mov                 ebp, esi

        $sequence_7 = { 0416 128bc606091a f6870f1a000000 e10d }
            // n = 4, score = 100
            //   0416                 | add                 al, 0x16
            //   128bc606091a         | adc                 cl, byte ptr [ebx + 0x1a0906c6]
            //   f6870f1a000000       | test                byte ptr [edi + 0x1a0f], 0
            //   e10d                 | loope               0xf

        $sequence_8 = { 0442 6808486409 58 0000 }
            // n = 4, score = 100
            //   0442                 | add                 al, 0x42
            //   6808486409           | push                0x9644808
            //   58                   | pop                 eax
            //   0000                 | add                 byte ptr [eax], al

        $sequence_9 = { 0d04b8ca08 6af3 dac9 0000 00ee }
            // n = 5, score = 100
            //   0d04b8ca08           | or                  eax, 0x8cab804
            //   6af3                 | push                -0xd
            //   dac9                 | fcmove              st(0), st(1)
            //   0000                 | add                 byte ptr [eax], al
            //   00ee                 | add                 dh, ch

    condition:
        7 of them and filesize < 475136
}
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