SYMBOLCOMMON_NAMEaka. SYNONYMS
win.miragefox (Back to overview)

MirageFox

Actor(s): Mirage


There is no description at this point.

References
2019-10-16Jay Rosenberg
@online{rosenberg:20191016:apt15:d226ae8, author = {Jay Rosenberg}, title = {{APT15}}, date = {2019-10-16}, url = {https://www.intezer.com/miragefox-apt15-resurfaces-with-new-tools-based-on-old-ones/}, language = {English}, urldate = {2019-10-16} } APT15
Mirage MirageFox APT15
Yara Rules
[TLP:WHITE] win_miragefox_auto (20221125 | Detects win.miragefox.)
rule win_miragefox_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.miragefox."
        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.miragefox"
        malpedia_rule_date = "20221118"
        malpedia_hash = "e0702e2e6d1d00da65c8a29a4ebacd0a4c59e1af"
        malpedia_version = "20221125"
        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???????? 85c0 0f84f6000000 8d85c0feffff }
            // n = 4, score = 100
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f84f6000000         | je                  0xfc
            //   8d85c0feffff         | lea                 eax, [ebp - 0x140]

        $sequence_1 = { e8???????? 83660c00 59 59 5f 5b 8b4df4 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83660c00             | and                 dword ptr [esi + 0xc], 0
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   5f                   | pop                 edi
            //   5b                   | pop                 ebx
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]

        $sequence_2 = { 5e 33c0 64890d00000000 5b c9 c20400 ff45ec }
            // n = 7, score = 100
            //   5e                   | pop                 esi
            //   33c0                 | xor                 eax, eax
            //   64890d00000000       | mov                 dword ptr fs:[0], ecx
            //   5b                   | pop                 ebx
            //   c9                   | leave               
            //   c20400               | ret                 4
            //   ff45ec               | inc                 dword ptr [ebp - 0x14]

        $sequence_3 = { 33f6 59 3bc6 59 7560 }
            // n = 5, score = 100
            //   33f6                 | xor                 esi, esi
            //   59                   | pop                 ecx
            //   3bc6                 | cmp                 eax, esi
            //   59                   | pop                 ecx
            //   7560                 | jne                 0x62

        $sequence_4 = { ff75f4 57 ff15???????? 50 8945e8 }
            // n = 5, score = 100
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   57                   | push                edi
            //   ff15????????         |                     
            //   50                   | push                eax
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax

        $sequence_5 = { eb1b 8b4514 f6c303 7509 8b0c85c05e2a00 eb07 8b0c85f45e2a00 }
            // n = 7, score = 100
            //   eb1b                 | jmp                 0x1d
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   f6c303               | test                bl, 3
            //   7509                 | jne                 0xb
            //   8b0c85c05e2a00       | mov                 ecx, dword ptr [eax*4 + 0x2a5ec0]
            //   eb07                 | jmp                 9
            //   8b0c85f45e2a00       | mov                 ecx, dword ptr [eax*4 + 0x2a5ef4]

        $sequence_6 = { 8d8db0fbffff e8???????? 8365fc00 b808880000 }
            // n = 4, score = 100
            //   8d8db0fbffff         | lea                 ecx, [ebp - 0x450]
            //   e8????????           |                     
            //   8365fc00             | and                 dword ptr [ebp - 4], 0
            //   b808880000           | mov                 eax, 0x8808

        $sequence_7 = { f68141f72a0004 89750c 7453 803e00 7504 }
            // n = 5, score = 100
            //   f68141f72a0004       | test                byte ptr [ecx + 0x2af741], 4
            //   89750c               | mov                 dword ptr [ebp + 0xc], esi
            //   7453                 | je                  0x55
            //   803e00               | cmp                 byte ptr [esi], 0
            //   7504                 | jne                 6

        $sequence_8 = { f3a5 8d4d2c e8???????? 8d4d0c e8???????? ebdc }
            // n = 6, score = 100
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8d4d2c               | lea                 ecx, [ebp + 0x2c]
            //   e8????????           |                     
            //   8d4d0c               | lea                 ecx, [ebp + 0xc]
            //   e8????????           |                     
            //   ebdc                 | jmp                 0xffffffde

        $sequence_9 = { 8d45f4 50 6819000200 56 68???????? 6801000080 ff15???????? }
            // n = 7, score = 100
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   6819000200           | push                0x20019
            //   56                   | push                esi
            //   68????????           |                     
            //   6801000080           | push                0x80000001
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 286720
}
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