SYMBOLCOMMON_NAMEaka. SYNONYMS
win.dharma (Back to overview)

Dharma

aka: Arena, Crysis, Wadhrama, ncov
URLhaus      

According to MalwareBytes, the Dharma Ransomware family is installed manually by attackers hacking into computers over Remote Desktop Protocol Services (RDP). The attackers will scan the Internet for computers running RDP, usually on TCP port 3389, and then attempt to brute force the password for the computer.

Once they gain access to the computer they will install the ransomware and let it encrypt the computer. If the attackers are able to encrypt other computers on the network, they will attempt to do so as well.

References
2021-03-17Palo Alto Networks Unit 42Unit42
@techreport{unit42:20210317:ransomware:504cc32, author = {Unit42}, title = {{Ransomware Threat Report 2021}}, date = {2021-03-17}, institution = {Palo Alto Networks Unit 42}, url = {https://www.paloaltonetworks.com/content/dam/pan/en_US/assets/pdf/reports/Unit_42/unit42-ransomware-threat-report-2021.pdf}, language = {English}, urldate = {2021-03-19} } Ransomware Threat Report 2021
RansomEXX Dharma DoppelPaymer Gandcrab Mailto Maze Phobos Ransomware RansomEXX REvil Ryuk WastedLocker Zeppelin Ransomware
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
2021-01-08ZscalerMohd Sadique, Pradeep Kulkarni
@online{sadique:20210108:ransomware:7e4aa27, author = {Mohd Sadique and Pradeep Kulkarni}, title = {{Ransomware Delivered Using RDP Brute-Force Attack}}, date = {2021-01-08}, organization = {Zscaler}, url = {https://www.zscaler.com/blogs/security-research/ransomware-delivered-using-rdp-brute-force-attack}, language = {English}, urldate = {2021-02-09} } Ransomware Delivered Using RDP Brute-Force Attack
Dharma
2020-12-18Trend MicroMatthew Camacho, Raphael Centeno, Junestherry Salvador
@online{camacho:20201218:negasteal:e5b291f, author = {Matthew Camacho and Raphael Centeno and Junestherry Salvador}, title = {{Negasteal Uses Hastebin for Fileless Delivery of Crysis Ransomware}}, date = {2020-12-18}, organization = {Trend Micro}, url = {https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/negasteal-uses-hastebin-for-fileless-delivery-of-crysis-ransomware}, language = {English}, urldate = {2020-12-26} } Negasteal Uses Hastebin for Fileless Delivery of Crysis Ransomware
Agent Tesla Dharma
2020-08-24Group-IBOleg Skulkin
@online{skulkin:20200824:cybercriminal:f1959f3, author = {Oleg Skulkin}, title = {{Cybercriminal greeners from Iran attack companies worldwide for financial gain}}, date = {2020-08-24}, organization = {Group-IB}, url = {https://www.group-ib.com/media/iran-cybercriminals/}, language = {English}, urldate = {2020-08-25} } Cybercriminal greeners from Iran attack companies worldwide for financial gain
Dharma
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
2020-06-16The DFIR ReportThe DFIR Report
@online{report:20200616:little:bc50ff0, author = {The DFIR Report}, title = {{The Little Ransomware That Couldn’t (Dharma)}}, date = {2020-06-16}, organization = {The DFIR Report}, url = {https://thedfirreport.com/2020/06/16/the-little-ransomware-that-couldnt-dharma/}, language = {English}, urldate = {2020-06-16} } The Little Ransomware That Couldn’t (Dharma)
Dharma
2020-04-24Advanced IntelligenceBridgit Sullivan
@online{sullivan:20200424:inside:ee63bb1, author = {Bridgit Sullivan}, title = {{Inside "Phobos" Ransomware: "Dharma" Past & Underground}}, date = {2020-04-24}, organization = {Advanced Intelligence}, url = {https://www.advanced-intel.com/post/inside-phobos-ransomware-dharma-past-underground}, language = {English}, urldate = {2020-07-30} } Inside "Phobos" Ransomware: "Dharma" Past & Underground
Dharma Phobos Ransomware
2020-03-05MicrosoftMicrosoft Threat Protection Intelligence Team
@online{team:20200305:humanoperated:d90a28e, author = {Microsoft Threat Protection Intelligence Team}, title = {{Human-operated ransomware attacks: A preventable disaster}}, date = {2020-03-05}, organization = {Microsoft}, url = {https://www.microsoft.com/security/blog/2020/03/05/human-operated-ransomware-attacks-a-preventable-disaster/}, language = {English}, urldate = {2020-03-06} } Human-operated ransomware attacks: A preventable disaster
Dharma DoppelPaymer Dridex EternalPetya Gandcrab Hermes LockerGoga MegaCortex MimiKatz REvil RobinHood Ryuk SamSam TrickBot WannaCryptor
2020-03-04CrowdStrikeCrowdStrike
@techreport{crowdstrike:20200304:2020:818c85f, author = {CrowdStrike}, title = {{2020 CrowdStrike Global Threat Report}}, date = {2020-03-04}, institution = {CrowdStrike}, url = {https://go.crowdstrike.com/rs/281-OBQ-266/images/Report2020CrowdStrikeGlobalThreatReport.pdf}, language = {English}, urldate = {2020-07-24} } 2020 CrowdStrike Global Threat Report
MESSAGETAP More_eggs 8.t Dropper Anchor BabyShark BadNews Clop Cobalt Strike CobInt Cobra Carbon System Cutwail DanaBot Dharma DoppelPaymer Dridex Emotet FlawedAmmyy FriedEx Gandcrab Get2 IcedID ISFB KerrDown LightNeuron LockerGoga Maze MECHANICAL Necurs Nokki Outlook Backdoor Phobos Ransomware Predator The Thief QakBot REvil RobinHood Ryuk SDBbot Skipper SmokeLoader TerraRecon TerraStealer TerraTV TinyLoader TrickBot vidar Winnti ANTHROPOID SPIDER Anunak APT31 APT39 BlackTech BuhTrap Charming Kitten CLOCKWORD SPIDER DOPPEL SPIDER Gamaredon Group Leviathan MONTY SPIDER Mustang Panda NARWHAL SPIDER NOCTURNAL SPIDER Pinchy Spider Pirate Panda Salty Spider SCULLY SPIDER SMOKY SPIDER Thrip VENOM SPIDER
2020-02-25RSA ConferenceJoel DeCapua
@online{decapua:20200225:feds:423f929, author = {Joel DeCapua}, title = {{Feds Fighting Ransomware: How the FBI Investigates and How You Can Help}}, date = {2020-02-25}, organization = {RSA Conference}, url = {https://www.youtube.com/watch?v=LUxOcpIRxmg}, language = {English}, urldate = {2020-03-04} } Feds Fighting Ransomware: How the FBI Investigates and How You Can Help
FastCash Cerber Defray Dharma FriedEx Gandcrab GlobeImposter Mamba Phobos Ransomware Rapid Ransom REvil Ryuk SamSam Zeus
2020-01-29ANSSIANSSI
@techreport{anssi:20200129:tat:3d59e6e, author = {ANSSI}, title = {{État de la menace rançongiciel}}, date = {2020-01-29}, institution = {ANSSI}, url = {https://www.cert.ssi.gouv.fr/uploads/CERTFR-2020-CTI-001.pdf}, language = {English}, urldate = {2020-02-03} } État de la menace rançongiciel
Clop Dharma FriedEx Gandcrab LockerGoga Maze MegaCortex REvil RobinHood Ryuk SamSam
2020-01-17SecureworksTamada Kiyotaka, Keita Yamazaki, You Nakatsuru
@techreport{kiyotaka:20200117:is:969ff38, author = {Tamada Kiyotaka and Keita Yamazaki and You Nakatsuru}, title = {{Is It Wrong to Try to Find APT Techniques in Ransomware Attack?}}, date = {2020-01-17}, institution = {Secureworks}, url = {https://jsac.jpcert.or.jp/archive/2020/pdf/JSAC2020_1_tamada-yamazaki-nakatsuru_en.pdf}, language = {English}, urldate = {2020-04-06} } Is It Wrong to Try to Find APT Techniques in Ransomware Attack?
Defray Dharma FriedEx Gandcrab GlobeImposter Matrix Ransom MedusaLocker Phobos Ransomware REvil Ryuk SamSam Scarab Ransomware
2019-05-08Trend MicroRaphael Centeno
@online{centeno:20190508:dharma:cc5ac04, author = {Raphael Centeno}, title = {{Dharma Ransomware Uses AV Tool to Distract from Malicious Activities}}, date = {2019-05-08}, organization = {Trend Micro}, url = {https://blog.trendmicro.com/trendlabs-security-intelligence/dharma-ransomware-uses-av-tool-to-distract-from-malicious-activities/}, language = {English}, urldate = {2020-01-06} } Dharma Ransomware Uses AV Tool to Distract from Malicious Activities
Dharma
2018-07-10Carbon BlackJared Myers
@online{myers:20180710:carbon:cc54d00, author = {Jared Myers}, title = {{Carbon Black TAU Threat Analysis: Recent Dharma Ransomware Highlights Attackers’ Continued Use of Open-Source Tools}}, date = {2018-07-10}, organization = {Carbon Black}, url = {https://www.carbonblack.com/2018/07/10/carbon-black-tau-threat-analysis-recent-dharma-ransomware-highlights-attackers-continued-use-open-source-tools/}, language = {English}, urldate = {2020-01-10} } Carbon Black TAU Threat Analysis: Recent Dharma Ransomware Highlights Attackers’ Continued Use of Open-Source Tools
Dharma
2017-08-25Bleeping ComputerLawrence Abrams
@online{abrams:20170825:new:a2d73b9, author = {Lawrence Abrams}, title = {{New Arena Crysis Ransomware Variant Released}}, date = {2017-08-25}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/new-arena-crysis-ransomware-variant-released/}, language = {English}, urldate = {2019-12-20} } New Arena Crysis Ransomware Variant Released
Dharma
Yara Rules
[TLP:WHITE] win_dharma_auto (20201023 | autogenerated rule brought to you by yara-signator)
rule win_dharma_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.dharma"
        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 = { 8b4818 51 e8???????? 83c408 2500ff00ff 0bf0 8b55f4 }
            // n = 7, score = 100
            //   8b4818               | mov                 ecx, dword ptr [eax + 0x18]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   2500ff00ff           | and                 eax, 0xff00ff00
            //   0bf0                 | or                  esi, eax
            //   8b55f4               | mov                 edx, dword ptr [ebp - 0xc]

        $sequence_1 = { 8b08 51 e8???????? 83c404 85c0 7505 }
            // n = 6, score = 100
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   85c0                 | test                eax, eax
            //   7505                 | jne                 7

        $sequence_2 = { f7da 8955fc 8b4508 50 e8???????? 8b45fc 8be5 }
            // n = 7, score = 100
            //   f7da                 | neg                 edx
            //   8955fc               | mov                 dword ptr [ebp - 4], edx
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   8be5                 | mov                 esp, ebp

        $sequence_3 = { 83c001 8945f0 8b4df0 3b4df4 0f83ad000000 8b55f0 c1e205 }
            // n = 7, score = 100
            //   83c001               | add                 eax, 1
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]
            //   3b4df4               | cmp                 ecx, dword ptr [ebp - 0xc]
            //   0f83ad000000         | jae                 0xb3
            //   8b55f0               | mov                 edx, dword ptr [ebp - 0x10]
            //   c1e205               | shl                 edx, 5

        $sequence_4 = { 50 6a00 8b4dac 51 e8???????? 83c40c 8b55ac }
            // n = 7, score = 100
            //   50                   | push                eax
            //   6a00                 | push                0
            //   8b4dac               | mov                 ecx, dword ptr [ebp - 0x54]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b55ac               | mov                 edx, dword ptr [ebp - 0x54]

        $sequence_5 = { 8b450c 0fbf4804 894dfc 8b550c 8b420c 8b4dfc 0fb74c48fe }
            // n = 7, score = 100
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   0fbf4804             | movsx               ecx, word ptr [eax + 4]
            //   894dfc               | mov                 dword ptr [ebp - 4], ecx
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   8b420c               | mov                 eax, dword ptr [edx + 0xc]
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   0fb74c48fe           | movzx               ecx, word ptr [eax + ecx*2 - 2]

        $sequence_6 = { 8b4514 50 8b4d08 8b5110 52 }
            // n = 5, score = 100
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   50                   | push                eax
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b5110               | mov                 edx, dword ptr [ecx + 0x10]
            //   52                   | push                edx

        $sequence_7 = { 8b45e8 8b4808 894dd8 8b55e8 83c20c 52 e8???????? }
            // n = 7, score = 100
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]
            //   8b4808               | mov                 ecx, dword ptr [eax + 8]
            //   894dd8               | mov                 dword ptr [ebp - 0x28], ecx
            //   8b55e8               | mov                 edx, dword ptr [ebp - 0x18]
            //   83c20c               | add                 edx, 0xc
            //   52                   | push                edx
            //   e8????????           |                     

        $sequence_8 = { 3301 8b55f8 c1ea08 81e2ff000000 8b0c95b8bf4000 81e10000ff00 33c1 }
            // n = 7, score = 100
            //   3301                 | xor                 eax, dword ptr [ecx]
            //   8b55f8               | mov                 edx, dword ptr [ebp - 8]
            //   c1ea08               | shr                 edx, 8
            //   81e2ff000000         | and                 edx, 0xff
            //   8b0c95b8bf4000       | mov                 ecx, dword ptr [edx*4 + 0x40bfb8]
            //   81e10000ff00         | and                 ecx, 0xff0000
            //   33c1                 | xor                 eax, ecx

        $sequence_9 = { 6a04 8d55fc 52 8b45e4 50 e8???????? }
            // n = 6, score = 100
            //   6a04                 | push                4
            //   8d55fc               | lea                 edx, [ebp - 4]
            //   52                   | push                edx
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   50                   | push                eax
            //   e8????????           |                     

    condition:
        7 of them and filesize < 204800
}
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