SYMBOLCOMMON_NAMEaka. SYNONYMS
win.byeby (Back to overview)

BYEBY

Actor(s): Calypso group, Karma Panda


There is no description at this point.

References
2020-05-14ESET ResearchPeter Kálnai
@online{klnai:20200514:mikroceen:b259a8c, author = {Peter Kálnai}, title = {{Mikroceen: Spying backdoor leveraged in high‑profile networks in Central Asia}}, date = {2020-05-14}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2020/05/14/mikroceen-spying-backdoor-high-profile-networks-central-asia/}, language = {English}, urldate = {2020-05-14} } Mikroceen: Spying backdoor leveraged in high‑profile networks in Central Asia
BYEBY Microcin Microcin
2020-05-14Avast DecodedLuigino Camastra
@online{camastra:20200514:planted:03eab5a, author = {Luigino Camastra}, title = {{APT Group Planted Backdoors Targeting High Profile Networks in Central Asia}}, date = {2020-05-14}, organization = {Avast Decoded}, url = {https://decoded.avast.io/luigicamastra/apt-group-planted-backdoors-targeting-high-profile-networks-in-central-asia/}, language = {English}, urldate = {2020-05-14} } APT Group Planted Backdoors Targeting High Profile Networks in Central Asia
BYEBY Microcin Microcin
2020-03-12Check PointCheck Point Research
@online{research:20200312:vicious:3218bb8, author = {Check Point Research}, title = {{Vicious Panda: The COVID Campaign}}, date = {2020-03-12}, organization = {Check Point}, url = {https://research.checkpoint.com/2020/vicious-panda-the-covid-campaign/}, language = {English}, urldate = {2020-03-13} } Vicious Panda: The COVID Campaign
8.t Dropper BYEBY Enfal Korlia Poison Ivy
2019-10-31PTSecurityPTSecurity
@online{ptsecurity:20191031:calypso:adaf761, author = {PTSecurity}, title = {{Calypso APT: new group attacking state institutions}}, date = {2019-10-31}, organization = {PTSecurity}, url = {https://www.ptsecurity.com/ww-en/analytics/calypso-apt-2019/}, language = {English}, urldate = {2020-01-12} } Calypso APT: new group attacking state institutions
BYEBY FlyingDutchman Hussar PlugX
2017-09-28Palo Alto Networks Unit 42Josh Grunzweig, Robert Falcone
@online{grunzweig:20170928:threat:835bf8e, author = {Josh Grunzweig and Robert Falcone}, title = {{Threat Actors Target Government of Belarus Using CMSTAR Trojan}}, date = {2017-09-28}, organization = {Palo Alto Networks Unit 42}, url = {https://researchcenter.paloaltonetworks.com/2017/09/unit42-threat-actors-target-government-belarus-using-cmstar-trojan}, language = {English}, urldate = {2019-12-20} } Threat Actors Target Government of Belarus Using CMSTAR Trojan
BYEBY CMSTAR
Yara Rules
[TLP:WHITE] win_byeby_auto (20210616 | Detects win.byeby.)
rule win_byeby_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        version = "1"
        description = "Detects win.byeby."
        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.byeby"
        malpedia_rule_date = "20210604"
        malpedia_hash = "be09d5d71e77373c0f538068be31a2ad4c69cfbd"
        malpedia_version = "20210616"
        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 = { c1f805 8bf7 83e61f c1e606 03348518ab0110 8975dc 8b02 }
            // n = 7, score = 100
            //   c1f805               | sar                 eax, 5
            //   8bf7                 | mov                 esi, edi
            //   83e61f               | and                 esi, 0x1f
            //   c1e606               | shl                 esi, 6
            //   03348518ab0110       | add                 esi, dword ptr [eax*4 + 0x1001ab18]
            //   8975dc               | mov                 dword ptr [ebp - 0x24], esi
            //   8b02                 | mov                 eax, dword ptr [edx]

        $sequence_1 = { 89442438 8d442438 50 68???????? ffd7 40 }
            // n = 6, score = 100
            //   89442438             | mov                 dword ptr [esp + 0x38], eax
            //   8d442438             | lea                 eax, dword ptr [esp + 0x38]
            //   50                   | push                eax
            //   68????????           |                     
            //   ffd7                 | call                edi
            //   40                   | inc                 eax

        $sequence_2 = { e8???????? 8b35???????? 8d8424d0000000 83c40c 68???????? 50 ffd6 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b35????????         |                     
            //   8d8424d0000000       | lea                 eax, dword ptr [esp + 0xd0]
            //   83c40c               | add                 esp, 0xc
            //   68????????           |                     
            //   50                   | push                eax
            //   ffd6                 | call                esi

        $sequence_3 = { 6a00 50 c745f865786500 c685e8feffff00 e8???????? 83c40c 8d85e8feffff }
            // n = 7, score = 100
            //   6a00                 | push                0
            //   50                   | push                eax
            //   c745f865786500       | mov                 dword ptr [ebp - 8], 0x657865
            //   c685e8feffff00       | mov                 byte ptr [ebp - 0x118], 0
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8d85e8feffff         | lea                 eax, dword ptr [ebp - 0x118]

        $sequence_4 = { 50 e8???????? 8b1d???????? 8d85ccfeffff 83c418 50 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b1d????????         |                     
            //   8d85ccfeffff         | lea                 eax, dword ptr [ebp - 0x134]
            //   83c418               | add                 esp, 0x18
            //   50                   | push                eax

        $sequence_5 = { c1ff05 83e61f c1e606 8b0cbd18ab0110 f6440e0401 743d }
            // n = 6, score = 100
            //   c1ff05               | sar                 edi, 5
            //   83e61f               | and                 esi, 0x1f
            //   c1e606               | shl                 esi, 6
            //   8b0cbd18ab0110       | mov                 ecx, dword ptr [edi*4 + 0x1001ab18]
            //   f6440e0401           | test                byte ptr [esi + ecx + 4], 1
            //   743d                 | je                  0x3f

        $sequence_6 = { 6a00 ff15???????? a3???????? 8d44240c 50 ff35???????? }
            // n = 6, score = 100
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   a3????????           |                     
            //   8d44240c             | lea                 eax, dword ptr [esp + 0xc]
            //   50                   | push                eax
            //   ff35????????         |                     

        $sequence_7 = { 8bc8 e8???????? 8bf8 eb02 33ff 6a38 }
            // n = 6, score = 100
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   eb02                 | jmp                 4
            //   33ff                 | xor                 edi, edi
            //   6a38                 | push                0x38

        $sequence_8 = { ff15???????? 6a00 8d442438 50 }
            // n = 4, score = 100
            //   ff15????????         |                     
            //   6a00                 | push                0
            //   8d442438             | lea                 eax, dword ptr [esp + 0x38]
            //   50                   | push                eax

        $sequence_9 = { 50 ff15???????? 50 ff95b8fbffff 85c0 7508 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   ff15????????         |                     
            //   50                   | push                eax
            //   ff95b8fbffff         | call                dword ptr [ebp - 0x448]
            //   85c0                 | test                eax, eax
            //   7508                 | jne                 0xa

    condition:
        7 of them and filesize < 253952
}
Download all Yara Rules