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 (20201023 | autogenerated rule brought to you by yara-signator)
rule win_wmighost_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.wmighost"
        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 = { c645fc03 51 8bcc 8965c0 }
            // n = 4, score = 100
            //   c645fc03             | mov                 byte ptr [ebp - 4], 3
            //   51                   | push                ecx
            //   8bcc                 | mov                 ecx, esp
            //   8965c0               | mov                 dword ptr [ebp - 0x40], esp

        $sequence_1 = { 8955ec c745fcffffffff 8d4d08 e8???????? }
            // n = 4, score = 100
            //   8955ec               | mov                 dword ptr [ebp - 0x14], edx
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   e8????????           |                     

        $sequence_2 = { 8965f0 8d4de8 e8???????? c745fc00000000 }
            // n = 4, score = 100
            //   8965f0               | mov                 dword ptr [ebp - 0x10], esp
            //   8d4de8               | lea                 ecx, [ebp - 0x18]
            //   e8????????           |                     
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0

        $sequence_3 = { 83c404 8945c8 8b55c8 8955e4 8b45ec 50 }
            // n = 6, score = 100
            //   83c404               | add                 esp, 4
            //   8945c8               | mov                 dword ptr [ebp - 0x38], eax
            //   8b55c8               | mov                 edx, dword ptr [ebp - 0x38]
            //   8955e4               | mov                 dword ptr [ebp - 0x1c], edx
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   50                   | push                eax

        $sequence_4 = { 64892500000000 83ec08 894dec c745fc00000000 8d4d08 e8???????? }
            // n = 6, score = 100
            //   64892500000000       | mov                 dword ptr fs:[0], esp
            //   83ec08               | sub                 esp, 8
            //   894dec               | mov                 dword ptr [ebp - 0x14], ecx
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   e8????????           |                     

        $sequence_5 = { ff15???????? e9???????? c745fcffffffff 8d4d84 }
            // n = 4, score = 100
            //   ff15????????         |                     
            //   e9????????           |                     
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   8d4d84               | lea                 ecx, [ebp - 0x7c]

        $sequence_6 = { 51 ff15???????? 8d95fcfeffff 52 6804010000 }
            // n = 5, score = 100
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8d95fcfeffff         | lea                 edx, [ebp - 0x104]
            //   52                   | push                edx
            //   6804010000           | push                0x104

        $sequence_7 = { 52 6a00 ff15???????? 6aff 8b459c 50 }
            // n = 6, score = 100
            //   52                   | push                edx
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   6aff                 | push                -1
            //   8b459c               | mov                 eax, dword ptr [ebp - 0x64]
            //   50                   | push                eax

        $sequence_8 = { 6a00 6880000000 6a04 6a00 6a01 6800000040 8d95f8feffff }
            // n = 7, score = 100
            //   6a00                 | push                0
            //   6880000000           | push                0x80
            //   6a04                 | push                4
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   6800000040           | push                0x40000000
            //   8d95f8feffff         | lea                 edx, [ebp - 0x108]

        $sequence_9 = { 6800280000 8d858cd6ffff 50 ff15???????? 83c410 }
            // n = 5, score = 100
            //   6800280000           | push                0x2800
            //   8d858cd6ffff         | lea                 eax, [ebp - 0x2974]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83c410               | add                 esp, 0x10

    condition:
        7 of them and filesize < 49152
}
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