SYMBOLCOMMON_NAMEaka. SYNONYMS
win.doublefantasy (Back to overview)

DoubleFantasy

aka: VALIDATOR

Actor(s): Equation Group


There is no description at this point.

References
2020-08-27fmnagisa wordpressFacundo M
@online{m:20200827:revisiting:bac6d3b, author = {Facundo M}, title = {{Revisiting EquationGroup’s FANNY… or is it DEMENTIAWHEEL?}}, date = {2020-08-27}, organization = {fmnagisa wordpress}, url = {https://fmnagisa.wordpress.com/2020/08/27/revisiting-equationgroups-fanny-worm-or-dementiawheel/}, language = {English}, urldate = {2020-10-04} } Revisiting EquationGroup’s FANNY… or is it DEMENTIAWHEEL?
DoubleFantasy Fanny
2020-08-15Twitter (@Int2e_)Adrien B
@online{b:20200815:doublefantasy:6c843b6, author = {Adrien B}, title = {{Tweet on DoubleFantasy}}, date = {2020-08-15}, organization = {Twitter (@Int2e_)}, url = {https://twitter.com/Int2e_/status/1294565186939092994}, language = {English}, urldate = {2020-08-18} } Tweet on DoubleFantasy
DoubleFantasy
2015-02-16Kaspersky LabsGReAT
@online{great:20150216:equation:ad81ead, author = {GReAT}, title = {{Equation: The Death Star of Malware Galaxy}}, date = {2015-02-16}, organization = {Kaspersky Labs}, url = {https://securelist.com/equation-the-death-star-of-malware-galaxy/68750/}, language = {English}, urldate = {2022-05-23} } Equation: The Death Star of Malware Galaxy
DoubleFantasy EquationDrug Fanny GROK
Yara Rules
[TLP:WHITE] win_doublefantasy_auto (20221125 | Detects win.doublefantasy.)
rule win_doublefantasy_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.doublefantasy."
        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.doublefantasy"
        malpedia_rule_date = "20221118"
        malpedia_hash = "e0702e2e6d1d00da65c8a29a4ebacd0a4c59e1af"
        malpedia_version = "20221125"
        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 = { 8a80ad8c2700 eb02 32c0 84c0 7410 33d2 }
            // n = 6, score = 200
            //   8a80ad8c2700         | mov                 al, byte ptr [eax + 0x278cad]
            //   eb02                 | jmp                 4
            //   32c0                 | xor                 al, al
            //   84c0                 | test                al, al
            //   7410                 | je                  0x12
            //   33d2                 | xor                 edx, edx

        $sequence_1 = { 0fb64002 83e03f 8a80908c2700 eb02 }
            // n = 4, score = 200
            //   0fb64002             | movzx               eax, byte ptr [eax + 2]
            //   83e03f               | and                 eax, 0x3f
            //   8a80908c2700         | mov                 al, byte ptr [eax + 0x278c90]
            //   eb02                 | jmp                 4

        $sequence_2 = { 7405 a3???????? 890b 3905???????? 7572 a1???????? 8d5438ff }
            // n = 7, score = 200
            //   7405                 | je                  7
            //   a3????????           |                     
            //   890b                 | mov                 dword ptr [ebx], ecx
            //   3905????????         |                     
            //   7572                 | jne                 0x74
            //   a1????????           |                     
            //   8d5438ff             | lea                 edx, [eax + edi - 1]

        $sequence_3 = { e8???????? 8d8528fdffff 50 8d8528feffff 50 }
            // n = 5, score = 200
            //   e8????????           |                     
            //   8d8528fdffff         | lea                 eax, [ebp - 0x2d8]
            //   50                   | push                eax
            //   8d8528feffff         | lea                 eax, [ebp - 0x1d8]
            //   50                   | push                eax

        $sequence_4 = { 53 8d55cc 52 8d55d4 }
            // n = 4, score = 200
            //   53                   | push                ebx
            //   8d55cc               | lea                 edx, [ebp - 0x34]
            //   52                   | push                edx
            //   8d55d4               | lea                 edx, [ebp - 0x2c]

        $sequence_5 = { 7c97 8b45e4 8b08 8d5580 52 }
            // n = 5, score = 200
            //   7c97                 | jl                  0xffffff99
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8d5580               | lea                 edx, [ebp - 0x80]
            //   52                   | push                edx

        $sequence_6 = { ff15???????? 8945e0 3bc6 7459 53 50 6aff }
            // n = 7, score = 200
            //   ff15????????         |                     
            //   8945e0               | mov                 dword ptr [ebp - 0x20], eax
            //   3bc6                 | cmp                 eax, esi
            //   7459                 | je                  0x5b
            //   53                   | push                ebx
            //   50                   | push                eax
            //   6aff                 | push                -1

        $sequence_7 = { 33c0 85c9 7616 8da42400000000 8d50fd 891485a4ab2700 40 }
            // n = 7, score = 200
            //   33c0                 | xor                 eax, eax
            //   85c9                 | test                ecx, ecx
            //   7616                 | jbe                 0x18
            //   8da42400000000       | lea                 esp, [esp]
            //   8d50fd               | lea                 edx, [eax - 3]
            //   891485a4ab2700       | mov                 dword ptr [eax*4 + 0x27aba4], edx
            //   40                   | inc                 eax

        $sequence_8 = { 52 8d9528fdffff 52 6a2c 50 ff510c }
            // n = 6, score = 200
            //   52                   | push                edx
            //   8d9528fdffff         | lea                 edx, [ebp - 0x2d8]
            //   52                   | push                edx
            //   6a2c                 | push                0x2c
            //   50                   | push                eax
            //   ff510c               | call                dword ptr [ecx + 0xc]

        $sequence_9 = { 68???????? e8???????? 8b4605 c68094a3270000 ff35???????? }
            // n = 5, score = 200
            //   68????????           |                     
            //   e8????????           |                     
            //   8b4605               | mov                 eax, dword ptr [esi + 5]
            //   c68094a3270000       | mov                 byte ptr [eax + 0x27a394], 0
            //   ff35????????         |                     

        $sequence_10 = { 8a91908c2700 8b4c2408 8811 33d2 }
            // n = 4, score = 200
            //   8a91908c2700         | mov                 dl, byte ptr [ecx + 0x278c90]
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]
            //   8811                 | mov                 byte ptr [ecx], dl
            //   33d2                 | xor                 edx, edx

        $sequence_11 = { 837c241001 8a92908c2700 885101 7e1c 0fb67002 33d2 }
            // n = 6, score = 200
            //   837c241001           | cmp                 dword ptr [esp + 0x10], 1
            //   8a92908c2700         | mov                 dl, byte ptr [edx + 0x278c90]
            //   885101               | mov                 byte ptr [ecx + 1], dl
            //   7e1c                 | jle                 0x1e
            //   0fb67002             | movzx               esi, byte ptr [eax + 2]
            //   33d2                 | xor                 edx, edx

        $sequence_12 = { c68094a3270000 ff35???????? ff35???????? e8???????? }
            // n = 4, score = 200
            //   c68094a3270000       | mov                 byte ptr [eax + 0x27a394], 0
            //   ff35????????         |                     
            //   ff35????????         |                     
            //   e8????????           |                     

        $sequence_13 = { 5d c20400 55 8bec 837d0c00 68???????? }
            // n = 6, score = 200
            //   5d                   | pop                 ebp
            //   c20400               | ret                 4
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   837d0c00             | cmp                 dword ptr [ebp + 0xc], 0
            //   68????????           |                     

        $sequence_14 = { 8b442404 0fb608 c1e902 8a91908c2700 8b4c2408 }
            // n = 5, score = 200
            //   8b442404             | mov                 eax, dword ptr [esp + 4]
            //   0fb608               | movzx               ecx, byte ptr [eax]
            //   c1e902               | shr                 ecx, 2
            //   8a91908c2700         | mov                 dl, byte ptr [ecx + 0x278c90]
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]

        $sequence_15 = { ff75e0 ff15???????? 897de0 c3 682c020000 }
            // n = 5, score = 200
            //   ff75e0               | push                dword ptr [ebp - 0x20]
            //   ff15????????         |                     
            //   897de0               | mov                 dword ptr [ebp - 0x20], edi
            //   c3                   | ret                 
            //   682c020000           | push                0x22c

    condition:
        7 of them and filesize < 172032
}
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