SYMBOLCOMMON_NAMEaka. SYNONYMS
win.waterspout (Back to overview)

WaterSpout

Actor(s): IXESHE


There is no description at this point.

References
2014-09-03FireEyeNed Moran, Mike Oppenheim
@online{moran:20140903:darwins:1b05935, author = {Ned Moran and Mike Oppenheim}, title = {{Darwin’s Favorite APT Group}}, date = {2014-09-03}, organization = {FireEye}, url = {https://www.fireeye.com/blog/threat-research/2014/09/darwins-favorite-apt-group-2.html}, language = {English}, urldate = {2019-12-20} } Darwin’s Favorite APT Group
EtumBot ThreeByte WaterSpout IXESHE
Yara Rules
[TLP:WHITE] win_waterspout_auto (20220411 | Detects win.waterspout.)
rule win_waterspout_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.waterspout."
        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.waterspout"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { ffd3 8d4c2410 6a00 51 8d54241c }
            // n = 5, score = 200
            //   ffd3                 | call                ebx
            //   8d4c2410             | lea                 ecx, dword ptr [esp + 0x10]
            //   6a00                 | push                0
            //   51                   | push                ecx
            //   8d54241c             | lea                 edx, dword ptr [esp + 0x1c]

        $sequence_1 = { 7706 ff15???????? 8b4c241c 8d7101 8d4c2414 ff15???????? }
            // n = 6, score = 200
            //   7706                 | ja                  8
            //   ff15????????         |                     
            //   8b4c241c             | mov                 ecx, dword ptr [esp + 0x1c]
            //   8d7101               | lea                 esi, dword ptr [ecx + 1]
            //   8d4c2414             | lea                 ecx, dword ptr [esp + 0x14]
            //   ff15????????         |                     

        $sequence_2 = { 894c2424 c744242c44000000 894c2428 c744245801010000 66894c245c }
            // n = 5, score = 200
            //   894c2424             | mov                 dword ptr [esp + 0x24], ecx
            //   c744242c44000000     | mov                 dword ptr [esp + 0x2c], 0x44
            //   894c2428             | mov                 dword ptr [esp + 0x28], ecx
            //   c744245801010000     | mov                 dword ptr [esp + 0x58], 0x101
            //   66894c245c           | mov                 word ptr [esp + 0x5c], cx

        $sequence_3 = { ffd5 893e 893d???????? 893d???????? 53 }
            // n = 5, score = 200
            //   ffd5                 | call                ebp
            //   893e                 | mov                 dword ptr [esi], edi
            //   893d????????         |                     
            //   893d????????         |                     
            //   53                   | push                ebx

        $sequence_4 = { 891d???????? 6a60 e9???????? a1???????? 895c2414 }
            // n = 5, score = 200
            //   891d????????         |                     
            //   6a60                 | push                0x60
            //   e9????????           |                     
            //   a1????????           |                     
            //   895c2414             | mov                 dword ptr [esp + 0x14], ebx

        $sequence_5 = { 6a00 6a00 6802040000 53 ff15???????? 5f 5e }
            // n = 7, score = 200
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6802040000           | push                0x402
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_6 = { c6442477fb c644247843 c64424794d c644247a33 }
            // n = 4, score = 200
            //   c6442477fb           | mov                 byte ptr [esp + 0x77], 0xfb
            //   c644247843           | mov                 byte ptr [esp + 0x78], 0x43
            //   c64424794d           | mov                 byte ptr [esp + 0x79], 0x4d
            //   c644247a33           | mov                 byte ptr [esp + 0x7a], 0x33

        $sequence_7 = { 8d742408 f7d1 49 8bd1 }
            // n = 4, score = 200
            //   8d742408             | lea                 esi, dword ptr [esp + 8]
            //   f7d1                 | not                 ecx
            //   49                   | dec                 ecx
            //   8bd1                 | mov                 edx, ecx

        $sequence_8 = { 53 6a53 68???????? 56 e9???????? e8???????? 53 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   6a53                 | push                0x53
            //   68????????           |                     
            //   56                   | push                esi
            //   e9????????           |                     
            //   e8????????           |                     
            //   53                   | push                ebx

        $sequence_9 = { 8d7c241c 6804010000 f3ab b9fc070000 8dbc24a0230000 f3ab }
            // n = 6, score = 200
            //   8d7c241c             | lea                 edi, dword ptr [esp + 0x1c]
            //   6804010000           | push                0x104
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   b9fc070000           | mov                 ecx, 0x7fc
            //   8dbc24a0230000       | lea                 edi, dword ptr [esp + 0x23a0]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax

    condition:
        7 of them and filesize < 98304
}
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