SYMBOLCOMMON_NAMEaka. SYNONYMS
win.nemty (Back to overview)

Nemty


Nemty is a ransomware that was discovered in September 2019. Fortinet states that they found it being distributed through similar ways as Sodinokibi and also noted artfifacts they had seen before in Gandcrab.

References
2021-04-12PTSecurityPTSecurity
@online{ptsecurity:20210412:paas:1d06836, author = {PTSecurity}, title = {{PaaS, or how hackers evade antivirus software}}, date = {2021-04-12}, organization = {PTSecurity}, url = {https://www.ptsecurity.com/ww-en/analytics/pt-esc-threat-intelligence/paas-or-how-hackers-evade-antivirus-software/}, language = {English}, urldate = {2021-04-12} } PaaS, or how hackers evade antivirus software
Amadey Bunitu Cerber Dridex ISFB KPOT Stealer Mailto Nemty Phobos Ransomware Pony Predator The Thief QakBot Raccoon RTM SmokeLoader Zeppelin Ransomware Zloader
2021-02-23CrowdStrikeCrowdStrike
@techreport{crowdstrike:20210223:2021:bf5bc4f, author = {CrowdStrike}, title = {{2021 Global Threat Report}}, date = {2021-02-23}, institution = {CrowdStrike}, url = {https://go.crowdstrike.com/rs/281-OBQ-266/images/Report2021GTR.pdf}, language = {English}, urldate = {2021-02-25} } 2021 Global Threat Report
RansomEXX Amadey Anchor Avaddon Ransomware BazarBackdoor Clop Cobalt Strike Conti Ransomware Cutwail DanaBot DarkSide DoppelPaymer Dridex Egregor Emotet Hakbit IcedID JSOutProx KerrDown LockBit Mailto Maze MedusaLocker Mespinoza Mount Locker NedDnLoader Nemty Pay2Key PlugX Pushdo PwndLocker PyXie QakBot Quasar RAT RagnarLocker Ragnarok RansomEXX REvil Ryuk Sekhmet Ransomware ShadowPad SmokeLoader Snake Ransomware SUNBURST SunCrypt TEARDROP TrickBot WastedLocker Winnti Zloader
2021-02-02CRONUPGermán Fernández
@online{fernndez:20210202:de:6ff4f3a, author = {Germán Fernández}, title = {{De ataque con Malware a incidente de Ransomware}}, date = {2021-02-02}, organization = {CRONUP}, url = {https://www.cronup.com/post/de-ataque-con-malware-a-incidente-de-ransomware}, language = {Spanish}, urldate = {2021-03-02} } De ataque con Malware a incidente de Ransomware
Avaddon Ransomware BazarBackdoor Buer Clop Cobalt Strike Conti Ransomware DanaBot Dharma Dridex Egregor Emotet Empire Downloader FriedEx GootKit IcedID MegaCortex Nemty Phorpiex PwndLocker PyXie QakBot RansomEXX REvil Ryuk SDBbot SmokeLoader TrickBot Zloader
2021-01-25Medium CSIS TechblogBenoît Ancel
@online{ancel:20210125:nemty:7e56d61, author = {Benoît Ancel}, title = {{The Nemty affiliate model}}, date = {2021-01-25}, organization = {Medium CSIS Techblog}, url = {https://medium.com/csis-techblog/the-nemty-affiliate-model-13f5cf7ab66b}, language = {English}, urldate = {2021-01-25} } The Nemty affiliate model
Nemty
2020-07-29ESET Researchwelivesecurity
@techreport{welivesecurity:20200729:threat:496355c, author = {welivesecurity}, title = {{THREAT REPORT Q2 2020}}, date = {2020-07-29}, institution = {ESET Research}, url = {https://www.welivesecurity.com/wp-content/uploads/2020/07/ESET_Threat_Report_Q22020.pdf}, language = {English}, urldate = {2020-07-30} } THREAT REPORT Q2 2020
DEFENSOR ID HiddenAd Bundlore Pirrit Agent.BTZ Cerber ClipBanker CROSSWALK Cryptowall CTB Locker DanaBot Dharma Formbook Gandcrab Grandoreiro Houdini ISFB LockBit Locky Mailto Maze Microcin Nemty NjRAT Phobos Ransomware PlugX Pony REvil Socelars STOP Ransomware Tinba TrickBot WannaCryptor
2020-05-04SentinelOneJim Walter
@online{walter:20200504:meet:7943fa2, author = {Jim Walter}, title = {{Meet NEMTY Successor, Nefilim/Nephilim Ransomware}}, date = {2020-05-04}, organization = {SentinelOne}, url = {https://labs.sentinelone.com/meet-nemty-successor-nefilim-nephilim-ransomware/}, language = {English}, urldate = {2020-06-22} } Meet NEMTY Successor, Nefilim/Nephilim Ransomware
Nefilim Ransomware Nemty
2020-04-02McAfeeAlexandre Mundo, Marc Rivero López
@online{mundo:20200402:nemty:96afa32, author = {Alexandre Mundo and Marc Rivero López}, title = {{Nemty Ransomware – Learning by Doing}}, date = {2020-04-02}, organization = {McAfee}, url = {https://www.mcafee.com/blogs/other-blogs/mcafee-labs/nemty-ransomware-learning-by-doing/}, language = {English}, urldate = {2020-04-08} } Nemty Ransomware – Learning by Doing
Nemty
2020-03-24Bleeping ComputerLawrence Abrams
@online{abrams:20200324:three:fb92d03, author = {Lawrence Abrams}, title = {{Three More Ransomware Families Create Sites to Leak Stolen Data}}, date = {2020-03-24}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/three-more-ransomware-families-create-sites-to-leak-stolen-data/}, language = {English}, urldate = {2020-03-26} } Three More Ransomware Families Create Sites to Leak Stolen Data
Clop DoppelPaymer Maze Nefilim Ransomware Nemty REvil
2020-02-18LastlineJason Zhang, Stefano Ortolani
@online{zhang:20200218:nemty:8d6340a, author = {Jason Zhang and Stefano Ortolani}, title = {{Nemty Ransomware Scaling UP: APAC Mailboxes Swarmed by Dual Downloaders}}, date = {2020-02-18}, organization = {Lastline}, url = {https://www.lastline.com/labsblog/nemty-ransomware-scaling-up-apac-mailboxes-swarmed-dual-downloaders/}, language = {English}, urldate = {2020-02-23} } Nemty Ransomware Scaling UP: APAC Mailboxes Swarmed by Dual Downloaders
Nemty Phorpiex
2020-01-10Github (albertzsigovits)Albert Zsigovits
@online{zsigovits:20200110:nemty:7575d77, author = {Albert Zsigovits}, title = {{Nemty ransomware}}, date = {2020-01-10}, organization = {Github (albertzsigovits)}, url = {https://github.com/albertzsigovits/malware-notes/blob/master/Nemty.md}, language = {English}, urldate = {2020-01-14} } Nemty ransomware
Nemty
2019-11-04SymantecNguyen Hoang Giang, Eduardo Altares, Muhammad Hasib Latif
@online{giang:20191104:nemty:6f237c6, author = {Nguyen Hoang Giang and Eduardo Altares and Muhammad Hasib Latif}, title = {{Nemty Ransomware Expands Its Reach, Also Delivered by Trik Botnet}}, date = {2019-11-04}, organization = {Symantec}, url = {https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/nemty-ransomware-trik-botnet}, language = {English}, urldate = {2020-06-02} } Nemty Ransomware Expands Its Reach, Also Delivered by Trik Botnet
Nemty Phorpiex
2019-10-10Bleeping ComputerLawrence Abrams
@online{abrams:20191010:nemty:319e3b7, author = {Lawrence Abrams}, title = {{Nemty Ransomware Decryptor Released, Recover Files for Free}}, date = {2019-10-10}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/nemty-ransomware-decryptor-released-recover-files-for-free/}, language = {English}, urldate = {2020-01-09} } Nemty Ransomware Decryptor Released, Recover Files for Free
Nemty
2019-10-10TesorionFrank van den Hurk
@online{hurk:20191010:nemty:3be8553, author = {Frank van den Hurk}, title = {{Nemty update: decryptors for Nemty 1.5 and 1.6}}, date = {2019-10-10}, organization = {Tesorion}, url = {https://www.tesorion.nl/nemty-update-decryptors-for-nemty-1-5-and-1-6/}, language = {English}, urldate = {2019-10-23} } Nemty update: decryptors for Nemty 1.5 and 1.6
Nemty
2019-09-17FortinetJoie Salvio
@online{salvio:20190917:nemty:761b43e, author = {Joie Salvio}, title = {{Nemty Ransomware 1.0: A Threat in its Early Stage}}, date = {2019-09-17}, organization = {Fortinet}, url = {https://www.fortinet.com/blog/threat-research/nemty-ransomware-early-stage-threat.html}, language = {English}, urldate = {2020-01-13} } Nemty Ransomware 1.0: A Threat in its Early Stage
Nemty
2019-09-08Bleeping ComputerIonut Ilascu
@online{ilascu:20190908:fake:3f0addd, author = {Ionut Ilascu}, title = {{Fake PayPal Site Spreads Nemty Ransomware}}, date = {2019-09-08}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/fake-paypal-site-spreads-nemty-ransomware/}, language = {English}, urldate = {2020-01-13} } Fake PayPal Site Spreads Nemty Ransomware
Nemty
2019-09-03Bleeping ComputerIonut Ilascu
@online{ilascu:20190903:nemty:459166a, author = {Ionut Ilascu}, title = {{Nemty Ransomware Gets Distribution from RIG Exploit Kit}}, date = {2019-09-03}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/nemty-ransomware-gets-distribution-from-rig-exploit-kit/}, language = {English}, urldate = {2020-01-08} } Nemty Ransomware Gets Distribution from RIG Exploit Kit
Nemty
2019-08-26Bleeping ComputerIonut Ilascu
@online{ilascu:20190826:new:20f0561, author = {Ionut Ilascu}, title = {{New Nemty Ransomware May Spread via Compromised RDP Connections}}, date = {2019-08-26}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/new-nemty-ransomware-may-spread-via-compromised-rdp-connections/}, language = {English}, urldate = {2020-01-07} } New Nemty Ransomware May Spread via Compromised RDP Connections
Nemty
2019-08-24Github (k-vitali)Vitali Kremez
@online{kremez:20190824:notes:486e04c, author = {Vitali Kremez}, title = {{Notes on Nemty Ransomware}}, date = {2019-08-24}, organization = {Github (k-vitali)}, url = {https://raw.githubusercontent.com/k-vitali/Malware-Misc-RE/master/2019-08-24-nemty-ransomware-notes.vk.raw}, language = {English}, urldate = {2020-01-13} } Notes on Nemty Ransomware
Nemty
Yara Rules
[TLP:WHITE] win_nemty_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_nemty_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.nemty"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 7406 53 e8???????? 8347041c 5e 5b c3 }
            // n = 7, score = 300
            //   7406                 | je                  8
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8347041c             | add                 dword ptr [edi + 4], 0x1c
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   c3                   | ret                 

        $sequence_1 = { 8bcf 8b35???????? 03f1 83f810 }
            // n = 4, score = 300
            //   8bcf                 | mov                 ecx, edi
            //   8b35????????         |                     
            //   03f1                 | add                 esi, ecx
            //   83f810               | cmp                 eax, 0x10

        $sequence_2 = { 83f906 7524 83f801 7507 }
            // n = 4, score = 300
            //   83f906               | cmp                 ecx, 6
            //   7524                 | jne                 0x26
            //   83f801               | cmp                 eax, 1
            //   7507                 | jne                 9

        $sequence_3 = { 83f803 7515 be???????? eb13 83f90a 7509 be???????? }
            // n = 7, score = 300
            //   83f803               | cmp                 eax, 3
            //   7515                 | jne                 0x17
            //   be????????           |                     
            //   eb13                 | jmp                 0x15
            //   83f90a               | cmp                 ecx, 0xa
            //   7509                 | jne                 0xb
            //   be????????           |                     

        $sequence_4 = { be???????? 8bca 3bc7 7302 8bce 030d???????? }
            // n = 6, score = 300
            //   be????????           |                     
            //   8bca                 | mov                 ecx, edx
            //   3bc7                 | cmp                 eax, edi
            //   7302                 | jae                 4
            //   8bce                 | mov                 ecx, esi
            //   030d????????         |                     

        $sequence_5 = { ffb5f8fbffff 8d85fcfbffff 50 89b5f4fbffff ffd7 }
            // n = 5, score = 300
            //   ffb5f8fbffff         | push                dword ptr [ebp - 0x408]
            //   8d85fcfbffff         | lea                 eax, [ebp - 0x404]
            //   50                   | push                eax
            //   89b5f4fbffff         | mov                 dword ptr [ebp - 0x40c], esi
            //   ffd7                 | call                edi

        $sequence_6 = { 8945fc 53 56 57 ff35???????? e8???????? 8b15???????? }
            // n = 7, score = 300
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi
            //   ff35????????         |                     
            //   e8????????           |                     
            //   8b15????????         |                     

        $sequence_7 = { ff7534 e8???????? 837d3810 8bf8 8b4524 }
            // n = 5, score = 300
            //   ff7534               | push                dword ptr [ebp + 0x34]
            //   e8????????           |                     
            //   837d3810             | cmp                 dword ptr [ebp + 0x38], 0x10
            //   8bf8                 | mov                 edi, eax
            //   8b4524               | mov                 eax, dword ptr [ebp + 0x24]

        $sequence_8 = { 8d5dd8 50 ff75d8 8bc6 e8???????? a1???????? }
            // n = 6, score = 300
            //   8d5dd8               | lea                 ebx, [ebp - 0x28]
            //   50                   | push                eax
            //   ff75d8               | push                dword ptr [ebp - 0x28]
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   a1????????           |                     

        $sequence_9 = { 8b4110 3bc6 7302 8bf0 8bc6 }
            // n = 5, score = 300
            //   8b4110               | mov                 eax, dword ptr [ecx + 0x10]
            //   3bc6                 | cmp                 eax, esi
            //   7302                 | jae                 4
            //   8bf0                 | mov                 esi, eax
            //   8bc6                 | mov                 eax, esi

    condition:
        7 of them and filesize < 204800
}
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