SYMBOLCOMMON_NAMEaka. SYNONYMS
win.remy (Back to overview)

Remy

aka: WINDSHIELD

There is no description at this point.

References
2020SecureworksSecureWorks
@online{secureworks:2020:tin:ccd6795, author = {SecureWorks}, title = {{TIN WOODLAWN}}, date = {2020}, organization = {Secureworks}, url = {https://www.secureworks.com/research/threat-profiles/tin-woodlawn}, language = {English}, urldate = {2020-05-23} } TIN WOODLAWN
Cobalt Strike KerrDown MimiKatz PHOREAL RatSnif Remy SOUNDBITE APT32
2019-04-02CylanceCylance Research, Intelligence Team
@online{research:20190402:report:83c188f, author = {Cylance Research and Intelligence Team}, title = {{Report: OceanLotus APT Group Leveraging Steganography}}, date = {2019-04-02}, organization = {Cylance}, url = {https://threatvector.cylance.com/en_us/home/report-oceanlotus-apt-group-leveraging-steganography.html}, language = {English}, urldate = {2019-10-22} } Report: OceanLotus APT Group Leveraging Steganography
Remy
Yara Rules
[TLP:WHITE] win_remy_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_remy_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.remy"
        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 = { 55 8bec 83ec20 33c0 8b0cc538714300 3b4d0c }
            // n = 6, score = 200
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec20               | sub                 esp, 0x20
            //   33c0                 | xor                 eax, eax
            //   8b0cc538714300       | mov                 ecx, dword ptr [eax*8 + 0x437138]
            //   3b4d0c               | cmp                 ecx, dword ptr [ebp + 0xc]

        $sequence_1 = { 33db 53 53 53 6a01 68???????? 8bfa }
            // n = 7, score = 200
            //   33db                 | xor                 ebx, ebx
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   6a01                 | push                1
            //   68????????           |                     
            //   8bfa                 | mov                 edi, edx

        $sequence_2 = { 83c404 885dfc be0f000000 885d0c 895d1c 897520 397d3c }
            // n = 7, score = 200
            //   83c404               | add                 esp, 4
            //   885dfc               | mov                 byte ptr [ebp - 4], bl
            //   be0f000000           | mov                 esi, 0xf
            //   885d0c               | mov                 byte ptr [ebp + 0xc], bl
            //   895d1c               | mov                 dword ptr [ebp + 0x1c], ebx
            //   897520               | mov                 dword ptr [ebp + 0x20], esi
            //   397d3c               | cmp                 dword ptr [ebp + 0x3c], edi

        $sequence_3 = { 3ac3 7509 c745fcffffffff eb52 8b7734 56 }
            // n = 6, score = 200
            //   3ac3                 | cmp                 al, bl
            //   7509                 | jne                 0xb
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   eb52                 | jmp                 0x54
            //   8b7734               | mov                 esi, dword ptr [edi + 0x34]
            //   56                   | push                esi

        $sequence_4 = { 7409 50 e8???????? 83c404 8d7344 e8???????? 8db55cffffff }
            // n = 7, score = 200
            //   7409                 | je                  0xb
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8d7344               | lea                 esi, [ebx + 0x44]
            //   e8????????           |                     
            //   8db55cffffff         | lea                 esi, [ebp - 0xa4]

        $sequence_5 = { c1e907 0fb6b1f0f54200 8b4d0c 0fb77cb102 8b88bc160000 bb10000000 2bdf }
            // n = 7, score = 200
            //   c1e907               | shr                 ecx, 7
            //   0fb6b1f0f54200       | movzx               esi, byte ptr [ecx + 0x42f5f0]
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   0fb77cb102           | movzx               edi, word ptr [ecx + esi*4 + 2]
            //   8b88bc160000         | mov                 ecx, dword ptr [eax + 0x16bc]
            //   bb10000000           | mov                 ebx, 0x10
            //   2bdf                 | sub                 ebx, edi

        $sequence_6 = { 6a02 50 ff15???????? 8b561c 52 ff15???????? 897e1c }
            // n = 7, score = 200
            //   6a02                 | push                2
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8b561c               | mov                 edx, dword ptr [esi + 0x1c]
            //   52                   | push                edx
            //   ff15????????         |                     
            //   897e1c               | mov                 dword ptr [esi + 0x1c], edi

        $sequence_7 = { 8985b8feffff 3bc3 0f84dc010000 8b8db4feffff 8d85ccfeffff 50 51 }
            // n = 7, score = 200
            //   8985b8feffff         | mov                 dword ptr [ebp - 0x148], eax
            //   3bc3                 | cmp                 eax, ebx
            //   0f84dc010000         | je                  0x1e2
            //   8b8db4feffff         | mov                 ecx, dword ptr [ebp - 0x14c]
            //   8d85ccfeffff         | lea                 eax, [ebp - 0x134]
            //   50                   | push                eax
            //   51                   | push                ecx

        $sequence_8 = { 8d956cffffff 66c78560feffff3000 c7853cffffff203e4d2f c78540ffffff3e4b4c42 c78544ffffff48471e51 66c78548ffffff3000 c78594feffff303a424d }
            // n = 7, score = 200
            //   8d956cffffff         | lea                 edx, [ebp - 0x94]
            //   66c78560feffff3000     | mov    word ptr [ebp - 0x1a0], 0x30
            //   c7853cffffff203e4d2f     | mov    dword ptr [ebp - 0xc4], 0x2f4d3e20
            //   c78540ffffff3e4b4c42     | mov    dword ptr [ebp - 0xc0], 0x424c4b3e
            //   c78544ffffff48471e51     | mov    dword ptr [ebp - 0xbc], 0x511e4748
            //   66c78548ffffff3000     | mov    word ptr [ebp - 0xb8], 0x30
            //   c78594feffff303a424d     | mov    dword ptr [ebp - 0x16c], 0x4d423a30

        $sequence_9 = { 7560 ff15???????? 3de5030000 7453 c745fcfeffffff eb7a 8d9648100000 }
            // n = 7, score = 200
            //   7560                 | jne                 0x62
            //   ff15????????         |                     
            //   3de5030000           | cmp                 eax, 0x3e5
            //   7453                 | je                  0x55
            //   c745fcfeffffff       | mov                 dword ptr [ebp - 4], 0xfffffffe
            //   eb7a                 | jmp                 0x7c
            //   8d9648100000         | lea                 edx, [esi + 0x1048]

    condition:
        7 of them and filesize < 507904
}
Download all Yara Rules