SYMBOLCOMMON_NAMEaka. SYNONYMS
win.buhtrap (Back to overview)

Buhtrap

aka: Ratopak

Actor(s): BuhTrap


There is no description at this point.

References
2020-06-11SCYTHEJorge Orchilles
@online{orchilles:20200611:threatthursday:b0ccbb8, author = {Jorge Orchilles}, title = {{#ThreatThursday - Buhtrap}}, date = {2020-06-11}, organization = {SCYTHE}, url = {https://www.scythe.io/library/threatthursday-buhtrap}, language = {English}, urldate = {2020-06-16} } #ThreatThursday - Buhtrap
Buhtrap
2020-05-24Positive TechnologiesPT ESC Threat Intelligence
@online{intelligence:20200524:operation:2ce432b, author = {PT ESC Threat Intelligence}, title = {{Operation TA505: network infrastructure. Part 3.}}, date = {2020-05-24}, organization = {Positive Technologies}, url = {https://www.ptsecurity.com/ww-en/analytics/pt-esc-threat-intelligence/operation-ta505-part3/}, language = {English}, urldate = {2020-11-23} } Operation TA505: network infrastructure. Part 3.
AndroMut Buhtrap SmokeLoader
2019-07-11ESET ResearchJean-Ian Boutin
@online{boutin:20190711:buhtrap:ec174bc, author = {Jean-Ian Boutin}, title = {{Buhtrap group uses zero‑day in latest espionage campaigns}}, date = {2019-07-11}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2019/07/11/buhtrap-zero-day-espionage-campaigns/}, language = {English}, urldate = {2019-11-14} } Buhtrap group uses zero‑day in latest espionage campaigns
Buhtrap
2019-04-30ESET ResearchESET Research
@online{research:20190430:buhtrap:ebdeba3, author = {ESET Research}, title = {{Buhtrap backdoor and Buran ransomware distributed via major advertising platform}}, date = {2019-04-30}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2019/04/30/buhtrap-backdoor-ransomware-advertising-platform/}, language = {English}, urldate = {2019-11-14} } Buhtrap backdoor and Buran ransomware distributed via major advertising platform
Buhtrap ClipBanker RTM
2019-03-14DCSODCSO
@online{dcso:20190314:pegasusbuhtrap:2e48e0e, author = {DCSO}, title = {{Pegasus/Buhtrap analysis of the malware stage based on the leaked source code}}, date = {2019-03-14}, organization = {DCSO}, url = {https://blog.dcso.de/pegasus-buhtrap-analysis-of-the-malware-stage-based-on-the-leaked-source-code/}, language = {English}, urldate = {2020-01-07} } Pegasus/Buhtrap analysis of the malware stage based on the leaked source code
Buhtrap
2018-07-11GelosSnake BlogOmri Segev Moyal
@online{moyal:20180711:notcarbanak:b87716e, author = {Omri Segev Moyal}, title = {{NotCarbanak Mystery - Source Code Leak}}, date = {2018-07-11}, organization = {GelosSnake Blog}, url = {https://malware-research.org/carbanak-source-code-leaked/}, language = {English}, urldate = {2020-01-08} } NotCarbanak Mystery - Source Code Leak
Buhtrap
2016-02-22SymantecSymantec Security Response
@online{response:20160222:russian:c8f9d1a, author = {Symantec Security Response}, title = {{Russian bank employees received fake job offers in targeted email attack}}, date = {2016-02-22}, organization = {Symantec}, url = {https://www.symantec.com/connect/blogs/russian-bank-employees-received-fake-job-offers-targeted-email-attack}, language = {English}, urldate = {2019-11-28} } Russian bank employees received fake job offers in targeted email attack
Buhtrap BuhTrap
2016-02-22SymantecA L Johnson
@online{johnson:20160222:russian:cc3bc7b, author = {A L Johnson}, title = {{Russian bank employees received fake job offers in targeted email attack}}, date = {2016-02-22}, organization = {Symantec}, url = {https://community.broadcom.com/symantecenterprise/communities/community-home/librarydocuments/viewdocument?DocumentKey=8e498912-44f8-4ea0-ac50-4544f0fedd6c&CommunityKey=1ecf5f55-9545-44d6-b0f4-4e4a7f5f5e68&tab=librarydocuments}, language = {English}, urldate = {2020-04-21} } Russian bank employees received fake job offers in targeted email attack
Buhtrap BuhTrap
2015-04-09ESET ResearchJean-Ian Boutin
@online{boutin:20150409:operation:077f5fe, author = {Jean-Ian Boutin}, title = {{Operation Buhtrap, the trap for Russian accountants}}, date = {2015-04-09}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2015/04/09/operation-buhtrap/}, language = {English}, urldate = {2019-11-14} } Operation Buhtrap, the trap for Russian accountants
Buhtrap BuhTrap
Yara Rules
[TLP:WHITE] win_buhtrap_auto (20201014 | autogenerated rule brought to you by yara-signator)
rule win_buhtrap_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.buhtrap"
        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 = { 59 59 84c0 0f8435010000 }
            // n = 4, score = 500
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   84c0                 | test                al, al
            //   0f8435010000         | je                  0x13b

        $sequence_1 = { 8b4c2414 40 89442410 3bc3 }
            // n = 4, score = 400
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]
            //   40                   | inc                 eax
            //   89442410             | mov                 dword ptr [esp + 0x10], eax
            //   3bc3                 | cmp                 eax, ebx

        $sequence_2 = { ff15???????? 85c0 7506 56 ff75f0 ffd7 }
            // n = 6, score = 400
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7506                 | jne                 8
            //   56                   | push                esi
            //   ff75f0               | push                dword ptr [ebp - 0x10]
            //   ffd7                 | call                edi

        $sequence_3 = { 8d4701 50 ff15???????? 59 8b4dfc 53 895df8 }
            // n = 7, score = 400
            //   8d4701               | lea                 eax, [edi + 1]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   59                   | pop                 ecx
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   53                   | push                ebx
            //   895df8               | mov                 dword ptr [ebp - 8], ebx

        $sequence_4 = { 50 6a2b 50 ff15???????? 56 ff75dc ffd7 }
            // n = 7, score = 400
            //   50                   | push                eax
            //   6a2b                 | push                0x2b
            //   50                   | push                eax
            //   ff15????????         |                     
            //   56                   | push                esi
            //   ff75dc               | push                dword ptr [ebp - 0x24]
            //   ffd7                 | call                edi

        $sequence_5 = { 4e 75d0 33db 5f ff75ec 8b35???????? }
            // n = 6, score = 400
            //   4e                   | dec                 esi
            //   75d0                 | jne                 0xffffffd2
            //   33db                 | xor                 ebx, ebx
            //   5f                   | pop                 edi
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   8b35????????         |                     

        $sequence_6 = { ff5218 85c0 7907 32c0 }
            // n = 4, score = 400
            //   ff5218               | call                dword ptr [edx + 0x18]
            //   85c0                 | test                eax, eax
            //   7907                 | jns                 9
            //   32c0                 | xor                 al, al

        $sequence_7 = { 790d a1???????? 50 8b08 ff5108 eb82 57 }
            // n = 7, score = 400
            //   790d                 | jns                 0xf
            //   a1????????           |                     
            //   50                   | push                eax
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   ff5108               | call                dword ptr [ecx + 8]
            //   eb82                 | jmp                 0xffffff84
            //   57                   | push                edi

        $sequence_8 = { 68d9e65ec5 6a0a 68???????? e8???????? }
            // n = 4, score = 100
            //   68d9e65ec5           | push                0xc55ee6d9
            //   6a0a                 | push                0xa
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_9 = { 395864 75f8 897864 e9???????? 55 }
            // n = 5, score = 100
            //   395864               | cmp                 dword ptr [eax + 0x64], ebx
            //   75f8                 | jne                 0xfffffffa
            //   897864               | mov                 dword ptr [eax + 0x64], edi
            //   e9????????           |                     
            //   55                   | push                ebp

        $sequence_10 = { 53 ff15???????? 85c0 7420 33c9 668908 83c002 }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7420                 | je                  0x22
            //   33c9                 | xor                 ecx, ecx
            //   668908               | mov                 word ptr [eax], cx
            //   83c002               | add                 eax, 2

        $sequence_11 = { 83c410 84c0 7431 53 8d45f8 }
            // n = 5, score = 100
            //   83c410               | add                 esp, 0x10
            //   84c0                 | test                al, al
            //   7431                 | je                  0x33
            //   53                   | push                ebx
            //   8d45f8               | lea                 eax, [ebp - 8]

        $sequence_12 = { e8???????? c20400 8b442408 48 7519 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   c20400               | ret                 4
            //   8b442408             | mov                 eax, dword ptr [esp + 8]
            //   48                   | dec                 eax
            //   7519                 | jne                 0x1b

        $sequence_13 = { 8bce e8???????? 83c404 6a00 57 }
            // n = 5, score = 100
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   6a00                 | push                0
            //   57                   | push                edi

        $sequence_14 = { 6a00 56 ff7508 8b75fc 57 8bc3 e8???????? }
            // n = 7, score = 100
            //   6a00                 | push                0
            //   56                   | push                esi
            //   ff7508               | push                dword ptr [ebp + 8]
            //   8b75fc               | mov                 esi, dword ptr [ebp - 4]
            //   57                   | push                edi
            //   8bc3                 | mov                 eax, ebx
            //   e8????????           |                     

    condition:
        7 of them and filesize < 131072
}
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