SYMBOLCOMMON_NAMEaka. SYNONYMS
win.snifula (Back to overview)

Snifula

aka: Ursnif

There is no description at this point.

References
2023-07-18Kostas TSKostas
@online{kostas:20230718:ursnif:294f10f, author = {Kostas}, title = {{Ursnif VS Italy: Il PDF del Destino}}, date = {2023-07-18}, organization = {Kostas TS}, url = {https://kostas-ts.medium.com/ursnif-vs-italy-il-pdf-del-destino-5c83d6281072}, language = {English}, urldate = {2023-07-20} } Ursnif VS Italy: Il PDF del Destino
Gozi ISFB Snifula
2022-10-24Medium CSIS TechblogBenoît Ancel
@online{ancel:20221024:chapter:c870465, author = {Benoît Ancel}, title = {{Chapter 1 — From Gozi to ISFB: The history of a mythical malware family.}}, date = {2022-10-24}, organization = {Medium CSIS Techblog}, url = {https://medium.com/csis-techblog/chapter-1-from-gozi-to-isfb-the-history-of-a-mythical-malware-family-82e592577fef}, language = {English}, urldate = {2023-05-02} } Chapter 1 — From Gozi to ISFB: The history of a mythical malware family.
Gozi ISFB Snifula
2021-05-11Mal-Eatsmal_eats
@online{maleats:20210511:campo:0305ab9, author = {mal_eats}, title = {{Campo, a New Attack Campaign Targeting Japan}}, date = {2021-05-11}, organization = {Mal-Eats}, url = {https://mal-eats.net/en/2021/05/11/campo_new_attack_campaign_targeting_japan/}, language = {English}, urldate = {2021-06-01} } Campo, a New Attack Campaign Targeting Japan
AnchorDNS BazarBackdoor campoloader Cobalt Strike Phobos Snifula TrickBot Zloader
2021-02-03ZDNetCharlie Osborne
@online{osborne:20210203:ursnif:936317a, author = {Charlie Osborne}, title = {{Ursnif Trojan has targeted over 100 Italian banks}}, date = {2021-02-03}, organization = {ZDNet}, url = {https://www.zdnet.com/article/ursnif-trojan-has-targeted-over-100-italian-banks/}, language = {English}, urldate = {2021-06-29} } Ursnif Trojan has targeted over 100 Italian banks
ISFB Snifula
2020-11-27malware.loveRobert Giczewski
@online{giczewski:20201127:having:7cd6ae8, author = {Robert Giczewski}, title = {{Having fun with a Ursnif VBS dropper}}, date = {2020-11-27}, organization = {malware.love}, url = {https://malware.love/malware_analysis/reverse_engineering/2020/11/27/analyzing-a-vbs-dropper.html}, language = {English}, urldate = {2020-12-01} } Having fun with a Ursnif VBS dropper
ISFB Snifula
2020-07-23DarktraceMax Heinemeyer
@online{heinemeyer:20200723:resurgence:75f36ef, author = {Max Heinemeyer}, title = {{The resurgence of the Ursnif banking trojan}}, date = {2020-07-23}, organization = {Darktrace}, url = {https://www.darktrace.com/en/blog/the-resurgence-of-the-ursnif-banking-trojan/}, language = {English}, urldate = {2021-06-29} } The resurgence of the Ursnif banking trojan
ISFB Snifula
2013-05-29CIRCLCIRCL
@techreport{circl:20130529:malware:cd9f6f8, author = {CIRCL}, title = {{Malware analysis report of a Backdoor.Snifula variant}}, date = {2013-05-29}, institution = {CIRCL}, url = {https://www.circl.lu/assets/files/tr-13/tr-13-snifula-analysis-report-v1.3.pdf}, language = {English}, urldate = {2019-07-11} } Malware analysis report of a Backdoor.Snifula variant
Snifula
Yara Rules
[TLP:WHITE] win_snifula_auto (20230715 | Detects win.snifula.)
rule win_snifula_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.snifula."
        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.snifula"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 83c414 68???????? 56 68???????? 8bd8 8945fc e8???????? }
            // n = 7, score = 200
            //   83c414               | add                 esp, 0x14
            //   68????????           |                     
            //   56                   | push                esi
            //   68????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   e8????????           |                     

        $sequence_1 = { 8d4df4 51 8b4e04 03c8 51 e8???????? }
            // n = 6, score = 200
            //   8d4df4               | lea                 ecx, [ebp - 0xc]
            //   51                   | push                ecx
            //   8b4e04               | mov                 ecx, dword ptr [esi + 4]
            //   03c8                 | add                 ecx, eax
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_2 = { 53 eb46 8bc3 2b45fc 8945f4 40 50 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   eb46                 | jmp                 0x48
            //   8bc3                 | mov                 eax, ebx
            //   2b45fc               | sub                 eax, dword ptr [ebp - 4]
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   40                   | inc                 eax
            //   50                   | push                eax

        $sequence_3 = { ff75f8 ff75f4 68???????? 56 ff15???????? 83c414 68???????? }
            // n = 7, score = 200
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   68????????           |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   83c414               | add                 esp, 0x14
            //   68????????           |                     

        $sequence_4 = { 8b45f8 5f c9 c20400 56 }
            // n = 5, score = 200
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   5f                   | pop                 edi
            //   c9                   | leave               
            //   c20400               | ret                 4
            //   56                   | push                esi

        $sequence_5 = { 85c0 7405 397d08 7407 c7461403000000 f70600000040 7407 }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   7405                 | je                  7
            //   397d08               | cmp                 dword ptr [ebp + 8], edi
            //   7407                 | je                  9
            //   c7461403000000       | mov                 dword ptr [esi + 0x14], 3
            //   f70600000040         | test                dword ptr [esi], 0x40000000
            //   7407                 | je                  9

        $sequence_6 = { 8b0424 59 c20400 57 6a0c 6a40 33ff }
            // n = 7, score = 200
            //   8b0424               | mov                 eax, dword ptr [esp]
            //   59                   | pop                 ecx
            //   c20400               | ret                 4
            //   57                   | push                edi
            //   6a0c                 | push                0xc
            //   6a40                 | push                0x40
            //   33ff                 | xor                 edi, edi

        $sequence_7 = { bf???????? eb19 6a0d 5d 68???????? }
            // n = 5, score = 200
            //   bf????????           |                     
            //   eb19                 | jmp                 0x1b
            //   6a0d                 | push                0xd
            //   5d                   | pop                 ebp
            //   68????????           |                     

        $sequence_8 = { 6a00 ff35???????? ffd6 53 8bf0 }
            // n = 5, score = 200
            //   6a00                 | push                0
            //   ff35????????         |                     
            //   ffd6                 | call                esi
            //   53                   | push                ebx
            //   8bf0                 | mov                 esi, eax

        $sequence_9 = { 53 a3???????? ff15???????? a3???????? 3bc3 7505 6a02 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   a3????????           |                     
            //   ff15????????         |                     
            //   a3????????           |                     
            //   3bc3                 | cmp                 eax, ebx
            //   7505                 | jne                 7
            //   6a02                 | push                2

    condition:
        7 of them and filesize < 188416
}
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