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
2021-04-27CrowdStrikeJosh Dalman, Kamil Janton, Eben Kaplan
@online{dalman:20210427:ransomware:8242ac5, author = {Josh Dalman and Kamil Janton and Eben Kaplan}, title = {{Ransomware Preparedness: A Call to Action}}, date = {2021-04-27}, organization = {CrowdStrike}, url = {https://www.crowdstrike.com/blog/ransomware-preparedness-a-call-to-action/}, language = {English}, urldate = {2021-05-31} } Ransomware Preparedness: A Call to Action
Dharma GlobeImposter Maze Phobos CIRCUS SPIDER TRAVELING SPIDER
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 RansomEXX REvil Ryuk WastedLocker
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 BazarBackdoor Buer Clop Cobalt Strike Conti 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
2020-08-12CERT SantéCERT Santé
@online{sant:20200812:retour:1243ccf, author = {CERT Santé}, title = {{Retour d’expérience suite à une attaque par rançongiciel contre une structure de santé}}, date = {2020-08-12}, organization = {CERT Santé}, url = {https://cyberveille-sante.gouv.fr/cyberveille-sante/1821-france-retour-dexperience-suite-une-attaque-par-rancongiciel-contre-une}, language = {French}, urldate = {2021-08-03} } Retour d’expérience suite à une attaque par rançongiciel contre une structure de santé
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 PlugX Pony REvil Socelars STOP 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
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 DoppelDridex DoppelPaymer Dridex Emotet FlawedAmmyy FriedEx Gandcrab Get2 IcedID ISFB KerrDown LightNeuron LockerGoga Maze MECHANICAL Necurs Nokki Outlook Backdoor Phobos Predator The Thief QakBot REvil RobinHood Ryuk SDBbot Skipper SmokeLoader TerraRecon TerraStealer TerraTV TinyLoader TrickBot vidar Winnti ANTHROPOID SPIDER APT31 APT39 BlackTech BuhTrap Charming Kitten CLOCKWORK SPIDER DOPPEL SPIDER FIN7 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 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 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
2019-01-22Twitter (@JakubKroustek)Jakub Křoustek
@online{koustek:20190122:frequently:67caefe, author = {Jakub Křoustek}, title = {{Frequently updated Twitter thread with many Dharma samples}}, date = {2019-01-22}, organization = {Twitter (@JakubKroustek)}, url = {https://twitter.com/JakubKroustek/status/1087808550309675009}, language = {English}, urldate = {2021-05-19} } Frequently updated Twitter thread with many Dharma samples
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 (20210616 | Detects win.dharma.)
rule win_dharma_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        version = "1"
        description = "Detects win.dharma."
        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.dharma"
        malpedia_rule_date = "20210604"
        malpedia_hash = "be09d5d71e77373c0f538068be31a2ad4c69cfbd"
        malpedia_version = "20210616"
        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 = { 51 e8???????? 83c40c 8b55bc 52 e8???????? 83c404 }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b55bc               | mov                 edx, dword ptr [ebp - 0x44]
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_1 = { 8b4d08 8b5124 8b4508 8b4818 0fb71451 f7da 1bd2 }
            // n = 7, score = 100
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b5124               | mov                 edx, dword ptr [ecx + 0x24]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b4818               | mov                 ecx, dword ptr [eax + 0x18]
            //   0fb71451             | movzx               edx, word ptr [ecx + edx*2]
            //   f7da                 | neg                 edx
            //   1bd2                 | sbb                 edx, edx

        $sequence_2 = { 8b4508 8b4814 c1e908 8b5508 884a5c 8b4508 8b4d08 }
            // n = 7, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b4814               | mov                 ecx, dword ptr [eax + 0x14]
            //   c1e908               | shr                 ecx, 8
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   884a5c               | mov                 byte ptr [edx + 0x5c], cl
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]

        $sequence_3 = { 81e6ff00ff00 6a08 8b550c 8b4208 50 e8???????? 83c408 }
            // n = 7, score = 100
            //   81e6ff00ff00         | and                 esi, 0xff00ff
            //   6a08                 | push                8
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   8b4208               | mov                 eax, dword ptr [edx + 8]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8

        $sequence_4 = { e8???????? 83c408 8b45f0 50 e8???????? 8d4c0002 51 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d4c0002             | lea                 ecx, dword ptr [eax + eax + 2]
            //   51                   | push                ecx

        $sequence_5 = { 51 e8???????? 83c404 8945e8 837de800 7508 8b45e8 }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   837de800             | cmp                 dword ptr [ebp - 0x18], 0
            //   7508                 | jne                 0xa
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]

        $sequence_6 = { 0fb702 83e864 f7d8 1bc0 83e006 83c00a }
            // n = 6, score = 100
            //   0fb702               | movzx               eax, word ptr [edx]
            //   83e864               | sub                 eax, 0x64
            //   f7d8                 | neg                 eax
            //   1bc0                 | sbb                 eax, eax
            //   83e006               | and                 eax, 6
            //   83c00a               | add                 eax, 0xa

        $sequence_7 = { c1e918 8b148db8bb4000 81e2000000ff 8b45e4 c1e810 25ff000000 8b0c85b8bf4000 }
            // n = 7, score = 100
            //   c1e918               | shr                 ecx, 0x18
            //   8b148db8bb4000       | mov                 edx, dword ptr [ecx*4 + 0x40bbb8]
            //   81e2000000ff         | and                 edx, 0xff000000
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   c1e810               | shr                 eax, 0x10
            //   25ff000000           | and                 eax, 0xff
            //   8b0c85b8bf4000       | mov                 ecx, dword ptr [eax*4 + 0x40bfb8]

        $sequence_8 = { 8b4d10 51 8b5508 52 e8???????? 85c0 7457 }
            // n = 7, score = 100
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   51                   | push                ecx
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   52                   | push                edx
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7457                 | je                  0x59

        $sequence_9 = { 668b55f4 66d1e2 668955f4 ebe2 0fb745f8 0fb74df4 23c1 }
            // n = 7, score = 100
            //   668b55f4             | mov                 dx, word ptr [ebp - 0xc]
            //   66d1e2               | shl                 dx, 1
            //   668955f4             | mov                 word ptr [ebp - 0xc], dx
            //   ebe2                 | jmp                 0xffffffe4
            //   0fb745f8             | movzx               eax, word ptr [ebp - 8]
            //   0fb74df4             | movzx               ecx, word ptr [ebp - 0xc]
            //   23c1                 | and                 eax, ecx

    condition:
        7 of them and filesize < 204800
}
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