SYMBOLCOMMON_NAMEaka. SYNONYMS
win.backswap (Back to overview)

BackSwap


There is no description at this point.

References
2020-08-09F5 LabsRemi Cohen, Debbie Walkowski
@online{cohen:20200809:banking:8718999, author = {Remi Cohen and Debbie Walkowski}, title = {{Banking Trojans: A Reference Guide to the Malware Family Tree}}, date = {2020-08-09}, organization = {F5 Labs}, url = {https://www.f5.com/labs/articles/education/banking-trojans-a-reference-guide-to-the-malware-family-tree}, language = {English}, urldate = {2021-06-29} } Banking Trojans: A Reference Guide to the Malware Family Tree
BackSwap Carberp Citadel DanaBot Dridex Dyre Emotet Gozi Kronos PandaBanker Ramnit Shylock SpyEye Tinba TrickBot Vawtrak Zeus
2018-11-30Check PointItay Cohen
@online{cohen:20181130:evolution:045e447, author = {Itay Cohen}, title = {{The Evolution of BackSwap}}, date = {2018-11-30}, organization = {Check Point}, url = {https://research.checkpoint.com/the-evolution-of-backswap/}, language = {English}, urldate = {2020-01-10} } The Evolution of BackSwap
BackSwap
2018-10Group-IBGroup-IB
@techreport{groupib:201810:hitech:420711f, author = {Group-IB}, title = {{Hi-Tech Crime Trends 2018}}, date = {2018-10}, institution = {Group-IB}, url = {https://www.fintechsecurity.com.hk/slides/01.Dmitry-Annual-Group-IB-report-High-Tech-Crime-Trends.pdf}, language = {English}, urldate = {2021-02-09} } Hi-Tech Crime Trends 2018
BackSwap Cobalt Strike Cutlet Meterpreter
2018-08-22IBMLimor Kessem
@online{kessem:20180822:backswap:73c04f5, author = {Limor Kessem}, title = {{BackSwap Malware Now Targets Six Banks in Spain}}, date = {2018-08-22}, organization = {IBM}, url = {https://securityintelligence.com/backswap-malware-now-targets-six-banks-in-spain/}, language = {English}, urldate = {2019-12-20} } BackSwap Malware Now Targets Six Banks in Spain
BackSwap
2018-08-06CyberbitHod Gavriel, Boris Erbesfeld
@online{gavriel:20180806:backswap:f13384a, author = {Hod Gavriel and Boris Erbesfeld}, title = {{BackSwap Banker Malware Hides Inside Replicas of Legitimate Programs}}, date = {2018-08-06}, organization = {Cyberbit}, url = {https://www.cyberbit.com/backswap-banker-malware-hides-inside-replicas-of-legitimate-programs/}, language = {English}, urldate = {2020-08-21} } BackSwap Banker Malware Hides Inside Replicas of Legitimate Programs
BackSwap
2018-06-29F5Ruby Cohen, Doron Voolf
@online{cohen:20180629:backswap:1605a3d, author = {Ruby Cohen and Doron Voolf}, title = {{BackSwap Defrauds Online Banking Customers Using Hidden Input Fields}}, date = {2018-06-29}, organization = {F5}, url = {https://www.f5.com/labs/articles/threat-intelligence/backswap-defrauds-online-banking-customers-using-hidden-input-fi}, language = {English}, urldate = {2020-01-10} } BackSwap Defrauds Online Banking Customers Using Hidden Input Fields
BackSwap
2018-06-19CERT.PLHubert Barc
@online{barc:20180619:backswap:f0869a4, author = {Hubert Barc}, title = {{Backswap malware analysis}}, date = {2018-06-19}, organization = {CERT.PL}, url = {https://www.cert.pl/en/news/single/backswap-malware-analysis/}, language = {English}, urldate = {2019-12-10} } Backswap malware analysis
BackSwap
2018-05-25ESET ResearchMichal Poslušný
@online{poslun:20180525:backswap:709ad89, author = {Michal Poslušný}, title = {{BackSwap malware finds innovative ways to empty bank accounts}}, date = {2018-05-25}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2018/05/25/backswap-malware-empty-bank-accounts/}, language = {English}, urldate = {2019-11-14} } BackSwap malware finds innovative ways to empty bank accounts
BackSwap
Yara Rules
[TLP:WHITE] win_backswap_auto (20211008 | Detects win.backswap.)
rule win_backswap_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-10-07"
        version = "1"
        description = "Detects win.backswap."
        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.backswap"
        malpedia_rule_date = "20211007"
        malpedia_hash = "e5b790e0f888f252d49063a1251ca60ec2832535"
        malpedia_version = "20211008"
        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 = { 5b c9 c21000 83f0ff }
            // n = 4, score = 400
            //   5b                   | pop                 ebx
            //   c9                   | leave               
            //   c21000               | ret                 0x10
            //   83f0ff               | xor                 eax, 0xffffffff

        $sequence_1 = { 8a07 38d8 74f4 e8???????? 74ed 33c0 eb04 }
            // n = 7, score = 400
            //   8a07                 | mov                 al, byte ptr [edi]
            //   38d8                 | cmp                 al, bl
            //   74f4                 | je                  0xfffffff6
            //   e8????????           |                     
            //   74ed                 | je                  0xffffffef
            //   33c0                 | xor                 eax, eax
            //   eb04                 | jmp                 6

        $sequence_2 = { ff4508 8bfb 3bd3 0f8572ffffff 33c9 }
            // n = 5, score = 400
            //   ff4508               | inc                 dword ptr [ebp + 8]
            //   8bfb                 | mov                 edi, ebx
            //   3bd3                 | cmp                 edx, ebx
            //   0f8572ffffff         | jne                 0xffffff78
            //   33c9                 | xor                 ecx, ecx

        $sequence_3 = { 33c9 e9???????? b32a 397d14 7412 }
            // n = 5, score = 400
            //   33c9                 | xor                 ecx, ecx
            //   e9????????           |                     
            //   b32a                 | mov                 bl, 0x2a
            //   397d14               | cmp                 dword ptr [ebp + 0x14], edi
            //   7412                 | je                  0x14

        $sequence_4 = { 33c9 33d2 8bdf 4b eb1c 85c9 }
            // n = 6, score = 400
            //   33c9                 | xor                 ecx, ecx
            //   33d2                 | xor                 edx, edx
            //   8bdf                 | mov                 ebx, edi
            //   4b                   | dec                 ebx
            //   eb1c                 | jmp                 0x1e
            //   85c9                 | test                ecx, ecx

        $sequence_5 = { 7482 8b7508 ff4508 8bfb 3bd3 0f8572ffffff 33c9 }
            // n = 7, score = 400
            //   7482                 | je                  0xffffff84
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   ff4508               | inc                 dword ptr [ebp + 8]
            //   8bfb                 | mov                 edi, ebx
            //   3bd3                 | cmp                 edx, ebx
            //   0f8572ffffff         | jne                 0xffffff78
            //   33c9                 | xor                 ecx, ecx

        $sequence_6 = { 3bd3 0f8572ffffff 33c9 e9???????? }
            // n = 4, score = 400
            //   3bd3                 | cmp                 edx, ebx
            //   0f8572ffffff         | jne                 0xffffff78
            //   33c9                 | xor                 ecx, ecx
            //   e9????????           |                     

        $sequence_7 = { 3a06 7482 8b7508 ff4508 8bfb }
            // n = 5, score = 400
            //   3a06                 | cmp                 al, byte ptr [esi]
            //   7482                 | je                  0xffffff84
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   ff4508               | inc                 dword ptr [ebp + 8]
            //   8bfb                 | mov                 edi, ebx

        $sequence_8 = { 8b750c 8b7d08 8b4d10 d1e9 f366a5 59 }
            // n = 6, score = 400
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   d1e9                 | shr                 ecx, 1
            //   f366a5               | rep movsw           word ptr es:[edi], word ptr [esi]
            //   59                   | pop                 ecx

        $sequence_9 = { 55 8bec 56 57 51 fc }
            // n = 6, score = 400
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi
            //   57                   | push                edi
            //   51                   | push                ecx
            //   fc                   | cld                 

    condition:
        7 of them and filesize < 122880
}
[TLP:WHITE] win_backswap_w0   (20180620 | No description)
rule win_backswap_w0 {
    meta:
        author = "psrok/des"
        module = "tinba"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.backswap"
        malpedia_version = "20180620"
        malpedia_license = "CC BY-NC-SA 4.0"
        malpedia_sharing = "TLP:WHITE"
    strings:
        $api_routine = { B8 07 00 00 00 F7 ?? 8B ?? 0F B6 ?? 03 ?? 47 80 ?? ?? 75 EC }
        $api_loadlib = { E4 5A 57 5A }
        $api_getmodulehandle = { 27 D4 2B C0 }
        $rcxor = { 80 74 01 FF 08 80 74 01 FF 07 80 74 01 FF 06 }
        $str1 = "RespectMyAuthority"
        $str2 = "MozillaWindowClass"
        $get_urls_to_inject = { 50 FF [1-5] 8D 83 [4] FF D0 85 C0 74 [1] E8 }
    condition:
        all of ($api*) or ( ( all of ($str*) or $get_urls_to_inject ) and $rcxor )
}
Download all Yara Rules