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 (20220411 | Detects win.aveo.)
rule win_aveo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.aveo."
        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.aveo"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { 3816 7503 8845fd fec0 }
            // n = 4, score = 200
            //   3816                 | cmp                 byte ptr [esi], dl
            //   7503                 | jne                 5
            //   8845fd               | mov                 byte ptr [ebp - 3], al
            //   fec0                 | inc                 al

        $sequence_1 = { 68???????? ff15???????? 6800010000 8d8df4fdffff 51 6a00 }
            // n = 6, score = 200
            //   68????????           |                     
            //   ff15????????         |                     
            //   6800010000           | push                0x100
            //   8d8df4fdffff         | lea                 ecx, dword ptr [ebp - 0x20c]
            //   51                   | push                ecx
            //   6a00                 | push                0

        $sequence_2 = { 83c404 8944242c 3bc7 7513 }
            // n = 4, score = 200
            //   83c404               | add                 esp, 4
            //   8944242c             | mov                 dword ptr [esp + 0x2c], eax
            //   3bc7                 | cmp                 eax, edi
            //   7513                 | jne                 0x15

        $sequence_3 = { 8d8dfefeffff 6a00 51 8995f8feffff 668985fcfeffff }
            // n = 5, score = 200
            //   8d8dfefeffff         | lea                 ecx, dword ptr [ebp - 0x102]
            //   6a00                 | push                0
            //   51                   | push                ecx
            //   8995f8feffff         | mov                 dword ptr [ebp - 0x108], edx
            //   668985fcfeffff       | mov                 word ptr [ebp - 0x104], ax

        $sequence_4 = { 8be5 5d c3 880430 5f 8be5 }
            // n = 6, score = 200
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   880430               | mov                 byte ptr [eax + esi], al
            //   5f                   | pop                 edi
            //   8be5                 | mov                 esp, ebp

        $sequence_5 = { 83c40c 68???????? 8d9578feffff 68???????? 52 e8???????? 83c40c }
            // n = 7, score = 200
            //   83c40c               | add                 esp, 0xc
            //   68????????           |                     
            //   8d9578feffff         | lea                 edx, dword ptr [ebp - 0x188]
            //   68????????           |                     
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_6 = { 899df0fdffff e8???????? 83c404 8985f8fdffff 3bc3 7515 68???????? }
            // n = 7, score = 200
            //   899df0fdffff         | mov                 dword ptr [ebp - 0x210], ebx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8985f8fdffff         | mov                 dword ptr [ebp - 0x208], eax
            //   3bc3                 | cmp                 eax, ebx
            //   7515                 | jne                 0x17
            //   68????????           |                     

        $sequence_7 = { c3 5e 5b 8d4702 }
            // n = 4, score = 200
            //   c3                   | ret                 
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8d4702               | lea                 eax, dword ptr [edi + 2]

        $sequence_8 = { 8bec 8b4508 56 8d34c550154100 833e00 }
            // n = 5, score = 200
            //   8bec                 | mov                 ebp, esp
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   56                   | push                esi
            //   8d34c550154100       | lea                 esi, dword ptr [eax*8 + 0x411550]
            //   833e00               | cmp                 dword ptr [esi], 0

        $sequence_9 = { 53 8d95e8faffff 52 8885eafaffff ff15???????? 8d85f8fcffff 68???????? }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   8d95e8faffff         | lea                 edx, dword ptr [ebp - 0x518]
            //   52                   | push                edx
            //   8885eafaffff         | mov                 byte ptr [ebp - 0x516], al
            //   ff15????????         |                     
            //   8d85f8fcffff         | lea                 eax, dword ptr [ebp - 0x308]
            //   68????????           |                     

    condition:
        7 of them and filesize < 180224
}
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