SYMBOLCOMMON_NAMEaka. SYNONYMS
win.wmighost (Back to overview)

WMI Ghost

aka: Wimmie, Syndicasec

Actor(s): Thrip


There is no description at this point.

References
2018-06-19SymantecSecurity Response Attack Investigation Team
@online{team:20180619:thrip:4662184, author = {Security Response Attack Investigation Team}, title = {{Thrip: Espionage Group Hits Satellite, Telecoms, and Defense Companies}}, date = {2018-06-19}, organization = {Symantec}, url = {https://www.symantec.com/blogs/threat-intelligence/thrip-hits-satellite-telecoms-defense-targets}, language = {English}, urldate = {2020-01-09} } Thrip: Espionage Group Hits Satellite, Telecoms, and Defense Companies
Catchamas Rikamanu Spedear WMI Ghost Thrip
2017-07-17Secrary BlogLasha Khasaia
@online{khasaia:20170717:wmighost:20b59d3, author = {Lasha Khasaia}, title = {{WMIGhost / Wimmie - WMI malware}}, date = {2017-07-17}, organization = {Secrary Blog}, url = {https://secrary.com/ReversingMalware/WMIGhost/}, language = {English}, urldate = {2019-12-24} } WMIGhost / Wimmie - WMI malware
WMI Ghost
Yara Rules
[TLP:WHITE] win_wmighost_auto (20220516 | Detects win.wmighost.)
rule win_wmighost_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        version = "1"
        description = "Detects win.wmighost."
        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.wmighost"
        malpedia_rule_date = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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 = { 5d c3 55 8bec b9???????? ff15???????? }
            // n = 6, score = 100
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   b9????????           |                     
            //   ff15????????         |                     

        $sequence_1 = { 50 8d8df0fcffff 51 e8???????? 83c408 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   8d8df0fcffff         | lea                 ecx, [ebp - 0x310]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c408               | add                 esp, 8

        $sequence_2 = { 57 8d4510 898588aeffff 8b8d88aeffff 51 8b550c }
            // n = 6, score = 100
            //   57                   | push                edi
            //   8d4510               | lea                 eax, [ebp + 0x10]
            //   898588aeffff         | mov                 dword ptr [ebp - 0x5178], eax
            //   8b8d88aeffff         | mov                 ecx, dword ptr [ebp - 0x5178]
            //   51                   | push                ecx
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]

        $sequence_3 = { d1e1 51 e8???????? 83c404 8945c8 8b55c8 }
            // n = 6, score = 100
            //   d1e1                 | shl                 ecx, 1
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8945c8               | mov                 dword ptr [ebp - 0x38], eax
            //   8b55c8               | mov                 edx, dword ptr [ebp - 0x38]

        $sequence_4 = { ff15???????? 8d958cfeffff 52 ff15???????? 66c7858cfeffffd607 }
            // n = 5, score = 100
            //   ff15????????         |                     
            //   8d958cfeffff         | lea                 edx, [ebp - 0x174]
            //   52                   | push                edx
            //   ff15????????         |                     
            //   66c7858cfeffffd607     | mov    word ptr [ebp - 0x174], 0x7d6

        $sequence_5 = { 837df000 7d12 68???????? 8b45e8 50 8b4df0 }
            // n = 6, score = 100
            //   837df000             | cmp                 dword ptr [ebp - 0x10], 0
            //   7d12                 | jge                 0x14
            //   68????????           |                     
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]
            //   50                   | push                eax
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]

        $sequence_6 = { 837dfcff 7505 e9???????? 6a02 }
            // n = 4, score = 100
            //   837dfcff             | cmp                 dword ptr [ebp - 4], -1
            //   7505                 | jne                 7
            //   e9????????           |                     
            //   6a02                 | push                2

        $sequence_7 = { 8b45ec 50 8b4de4 51 6aff }
            // n = 5, score = 100
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   50                   | push                eax
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   51                   | push                ecx
            //   6aff                 | push                -1

        $sequence_8 = { ff5240 8945fc 837dfc00 7d12 68???????? 8b4df8 }
            // n = 6, score = 100
            //   ff5240               | call                dword ptr [edx + 0x40]
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   837dfc00             | cmp                 dword ptr [ebp - 4], 0
            //   7d12                 | jge                 0x14
            //   68????????           |                     
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]

        $sequence_9 = { 85c9 0f849a000000 6a10 6a00 8d559c }
            // n = 5, score = 100
            //   85c9                 | test                ecx, ecx
            //   0f849a000000         | je                  0xa0
            //   6a10                 | push                0x10
            //   6a00                 | push                0
            //   8d559c               | lea                 edx, [ebp - 0x64]

    condition:
        7 of them and filesize < 49152
}
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