SYMBOLCOMMON_NAMEaka. SYNONYMS
win.unidentified_020_cia_vault7 (Back to overview)

Unidentified 020 (Vault7)

Actor(s): Longhorn


There is no description at this point.

References
2017-03-07WikileaksWikileaks
@online{wikileaks:20170307:vault:839b275, author = {Wikileaks}, title = {{Vault 7: CIA Hacking Tools Revealed}}, date = {2017-03-07}, organization = {Wikileaks}, url = {https://wikileaks.org/ciav7p1/cms/page_34308128.html}, language = {English}, urldate = {2020-01-08} } Vault 7: CIA Hacking Tools Revealed
Unidentified 020 (Vault7)
Yara Rules
[TLP:WHITE] win_unidentified_020_cia_vault7_auto (20220516 | Detects win.unidentified_020_cia_vault7.)
rule win_unidentified_020_cia_vault7_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        version = "1"
        description = "Detects win.unidentified_020_cia_vault7."
        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.unidentified_020_cia_vault7"
        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 = { 8bd0 83e01f c1fa05 8b149520834100 59 }
            // n = 5, score = 200
            //   8bd0                 | mov                 edx, eax
            //   83e01f               | and                 eax, 0x1f
            //   c1fa05               | sar                 edx, 5
            //   8b149520834100       | mov                 edx, dword ptr [edx*4 + 0x418320]
            //   59                   | pop                 ecx

        $sequence_1 = { 0f8d3b010000 8b34bd20834100 85f6 0f84b9000000 }
            // n = 4, score = 200
            //   0f8d3b010000         | jge                 0x141
            //   8b34bd20834100       | mov                 esi, dword ptr [edi*4 + 0x418320]
            //   85f6                 | test                esi, esi
            //   0f84b9000000         | je                  0xbf

        $sequence_2 = { 57 8bc2 c1f805 8b048520834100 8bfa 83e71f c1e706 }
            // n = 7, score = 200
            //   57                   | push                edi
            //   8bc2                 | mov                 eax, edx
            //   c1f805               | sar                 eax, 5
            //   8b048520834100       | mov                 eax, dword ptr [eax*4 + 0x418320]
            //   8bfa                 | mov                 edi, edx
            //   83e71f               | and                 edi, 0x1f
            //   c1e706               | shl                 edi, 6

        $sequence_3 = { a3???????? c705????????7ad94000 c705????????2ed94000 c705????????67d94000 c705????????d0d84000 a3???????? c705????????fce14000 }
            // n = 7, score = 200
            //   a3????????           |                     
            //   c705????????7ad94000     |     
            //   c705????????2ed94000     |     
            //   c705????????67d94000     |     
            //   c705????????d0d84000     |     
            //   a3????????           |                     
            //   c705????????fce14000     |     

        $sequence_4 = { 8d8df2fdffff 51 89b598fbffff 668985f0fdffff }
            // n = 4, score = 200
            //   8d8df2fdffff         | lea                 ecx, [ebp - 0x20e]
            //   51                   | push                ecx
            //   89b598fbffff         | mov                 dword ptr [ebp - 0x468], esi
            //   668985f0fdffff       | mov                 word ptr [ebp - 0x210], ax

        $sequence_5 = { c1f805 8bfe 53 8d1c8520834100 }
            // n = 4, score = 200
            //   c1f805               | sar                 eax, 5
            //   8bfe                 | mov                 edi, esi
            //   53                   | push                ebx
            //   8d1c8520834100       | lea                 ebx, [eax*4 + 0x418320]

        $sequence_6 = { c1e006 8b0c8d20834100 8d440104 8020fe ff36 }
            // n = 5, score = 200
            //   c1e006               | shl                 eax, 6
            //   8b0c8d20834100       | mov                 ecx, dword ptr [ecx*4 + 0x418320]
            //   8d440104             | lea                 eax, [ecx + eax + 4]
            //   8020fe               | and                 byte ptr [eax], 0xfe
            //   ff36                 | push                dword ptr [esi]

        $sequence_7 = { 85c0 751b e8???????? c785c0f7ffffffffffff c745fcfeffffff e9???????? }
            // n = 6, score = 200
            //   85c0                 | test                eax, eax
            //   751b                 | jne                 0x1d
            //   e8????????           |                     
            //   c785c0f7ffffffffffff     | mov    dword ptr [ebp - 0x840], 0xffffffff
            //   c745fcfeffffff       | mov                 dword ptr [ebp - 4], 0xfffffffe
            //   e9????????           |                     

        $sequence_8 = { c3 3b8a74120000 7506 b804000000 }
            // n = 4, score = 200
            //   c3                   | ret                 
            //   3b8a74120000         | cmp                 ecx, dword ptr [edx + 0x1274]
            //   7506                 | jne                 8
            //   b804000000           | mov                 eax, 4

        $sequence_9 = { ff15???????? c705????????00000000 68000000f0 6a01 6a00 6a00 }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   c705????????00000000     |     
            //   68000000f0           | push                0xf0000000
            //   6a01                 | push                1
            //   6a00                 | push                0
            //   6a00                 | push                0

    condition:
        7 of them and filesize < 253952
}
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