SYMBOLCOMMON_NAMEaka. SYNONYMS
win.aveo (Back to overview)

Aveo


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References
2020SecureworksSecureWorks
@online{secureworks:2020:bronze:79d8dd2, author = {SecureWorks}, title = {{BRONZE OVERBROOK}}, date = {2020}, organization = {Secureworks}, url = {https://www.secureworks.com/research/threat-profiles/bronze-overbrook}, language = {English}, urldate = {2020-05-23} } BRONZE OVERBROOK
Aveo DDKONG IsSpace PLAINTEE PlugX Rambo DragonOK
2016-08-16Palo Alto Networks Unit 42Josh Grunzweig, Robert Falcone
@online{grunzweig:20160816:aveo:6f3cf5c, author = {Josh Grunzweig and Robert Falcone}, title = {{Aveo Malware Family Targets Japanese Speaking Users}}, date = {2016-08-16}, organization = {Palo Alto Networks Unit 42}, url = {http://researchcenter.paloaltonetworks.com/2016/08/unit42-aveo-malware-family-targets-japanese-speaking-users/}, language = {English}, urldate = {2019-12-20} } Aveo Malware Family Targets Japanese Speaking Users
Aveo
Yara Rules
[TLP:WHITE] win_aveo_auto (20201014 | autogenerated rule brought to you by yara-signator)
rule win_aveo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.aveo"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 50 51 897c2424 ffd6 }
            // n = 4, score = 200
            //   50                   | push                eax
            //   51                   | push                ecx
            //   897c2424             | mov                 dword ptr [esp + 0x24], edi
            //   ffd6                 | call                esi

        $sequence_1 = { 83f86d 0f84e7000000 85f6 7567 80bdf4efffff44 }
            // n = 5, score = 200
            //   83f86d               | cmp                 eax, 0x6d
            //   0f84e7000000         | je                  0xed
            //   85f6                 | test                esi, esi
            //   7567                 | jne                 0x69
            //   80bdf4efffff44       | cmp                 byte ptr [ebp - 0x100c], 0x44

        $sequence_2 = { c1f805 8b0485002e4100 83e61f c1e606 8d443004 8020fe ff15???????? }
            // n = 7, score = 200
            //   c1f805               | sar                 eax, 5
            //   8b0485002e4100       | mov                 eax, dword ptr [eax*4 + 0x412e00]
            //   83e61f               | and                 esi, 0x1f
            //   c1e606               | shl                 esi, 6
            //   8d443004             | lea                 eax, [eax + esi + 4]
            //   8020fe               | and                 byte ptr [eax], 0xfe
            //   ff15????????         |                     

        $sequence_3 = { 8d55e8 68???????? 52 e8???????? 8b45e8 8b4dec }
            // n = 6, score = 200
            //   8d55e8               | lea                 edx, [ebp - 0x18]
            //   68????????           |                     
            //   52                   | push                edx
            //   e8????????           |                     
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]

        $sequence_4 = { 57 8d4c2414 51 6a01 68???????? 52 897c2424 }
            // n = 7, score = 200
            //   57                   | push                edi
            //   8d4c2414             | lea                 ecx, [esp + 0x14]
            //   51                   | push                ecx
            //   6a01                 | push                1
            //   68????????           |                     
            //   52                   | push                edx
            //   897c2424             | mov                 dword ptr [esp + 0x24], edi

        $sequence_5 = { 83c8ff eb1b 8bc6 c1f805 8b0485002e4100 83e61f }
            // n = 6, score = 200
            //   83c8ff               | or                  eax, 0xffffffff
            //   eb1b                 | jmp                 0x1d
            //   8bc6                 | mov                 eax, esi
            //   c1f805               | sar                 eax, 5
            //   8b0485002e4100       | mov                 eax, dword ptr [eax*4 + 0x412e00]
            //   83e61f               | and                 esi, 0x1f

        $sequence_6 = { 754e 53 57 8d3c8558234100 }
            // n = 4, score = 200
            //   754e                 | jne                 0x50
            //   53                   | push                ebx
            //   57                   | push                edi
            //   8d3c8558234100       | lea                 edi, [eax*4 + 0x412358]

        $sequence_7 = { 8995f8feffff 668985fcfeffff e8???????? 68ff010000 8d95f5f9ffff 6a00 52 }
            // n = 7, score = 200
            //   8995f8feffff         | mov                 dword ptr [ebp - 0x108], edx
            //   668985fcfeffff       | mov                 word ptr [ebp - 0x104], ax
            //   e8????????           |                     
            //   68ff010000           | push                0x1ff
            //   8d95f5f9ffff         | lea                 edx, [ebp - 0x60b]
            //   6a00                 | push                0
            //   52                   | push                edx

        $sequence_8 = { 3c32 750e 8d8c241a020000 e8???????? }
            // n = 4, score = 200
            //   3c32                 | cmp                 al, 0x32
            //   750e                 | jne                 0x10
            //   8d8c241a020000       | lea                 ecx, [esp + 0x21a]
            //   e8????????           |                     

        $sequence_9 = { 83f83c 762a 56 e8???????? 8d044524234100 }
            // n = 5, score = 200
            //   83f83c               | cmp                 eax, 0x3c
            //   762a                 | jbe                 0x2c
            //   56                   | push                esi
            //   e8????????           |                     
            //   8d044524234100       | lea                 eax, [eax*2 + 0x412324]

    condition:
        7 of them and filesize < 180224
}
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