SYMBOLCOMMON_NAMEaka. SYNONYMS
win.mars_stealer (Back to overview)

Mars Stealer


3xp0rt describes Mars Stealer as an improved successor of Oski Stealer, supporting stealing from current browsers and targeting crypto currencies and 2FA plugins.

References
2022-12-18ZAYOTEMÖmer Faruk Kayıkcı, Nisanur Çıldız, Meryem Ahıskalı
@online{kaykc:20221218:mars:dc1db9a, author = {Ömer Faruk Kayıkcı and Nisanur Çıldız and Meryem Ahıskalı}, title = {{Mars Stealer Technical Analysis Report}}, date = {2022-12-18}, organization = {ZAYOTEM}, url = {https://drive.google.com/file/d/14cmYxzowVLyuiS5qDGOKzgI2_vak2Fve/view}, language = {English}, urldate = {2022-12-20} } Mars Stealer Technical Analysis Report
Mars Stealer
2022-09-15SekoiaThreat & Detection Research Team
@online{team:20220915:privateloader:d88c7b2, author = {Threat & Detection Research Team}, title = {{PrivateLoader: the loader of the prevalent ruzki PPI service}}, date = {2022-09-15}, organization = {Sekoia}, url = {https://blog.sekoia.io/privateloader-the-loader-of-the-prevalent-ruzki-ppi-service/}, language = {English}, urldate = {2022-09-19} } PrivateLoader: the loader of the prevalent ruzki PPI service
Agent Tesla Coinminer DanaBot DCRat Eternity Stealer Glupteba Mars Stealer NetSupportManager RAT Nymaim Nymaim2 Phoenix Keylogger PrivateLoader Raccoon RedLine Stealer SmokeLoader Socelars STOP Vidar YTStealer
2022-08-02cybleCyble Research Labs
@online{labs:20220802:fake:9770cab, author = {Cyble Research Labs}, title = {{Fake Atomic Wallet Website Distributing Mars Stealer}}, date = {2022-08-02}, organization = {cyble}, url = {https://blog.cyble.com/2022/08/02/fake-atomic-wallet-website-distributing-mars-stealer/}, language = {English}, urldate = {2022-08-08} } Fake Atomic Wallet Website Distributing Mars Stealer
Mars Stealer
2022-08-02Recorded FutureInsikt Group
@techreport{group:20220802:initial:5caddb5, author = {Insikt Group}, title = {{Initial Access Brokers Are Key to Rise in Ransomware Attacks}}, date = {2022-08-02}, institution = {Recorded Future}, url = {https://go.recordedfuture.com/hubfs/reports/cta-2022-0802.pdf}, language = {English}, urldate = {2022-08-05} } Initial Access Brokers Are Key to Rise in Ransomware Attacks
Azorult BlackMatter Conti Mars Stealer Raccoon RedLine Stealer Taurus Stealer Vidar
2022-07-13KELAKELA Cyber Intelligence Center
@online{center:20220713:next:b2e43e4, author = {KELA Cyber Intelligence Center}, title = {{The Next Generation of Info Stealers}}, date = {2022-07-13}, organization = {KELA}, url = {https://ke-la.com/information-stealers-a-new-landscape/}, language = {English}, urldate = {2022-07-18} } The Next Generation of Info Stealers
Arkei Stealer Azorult BlackGuard Eternity Stealer Ginzo Stealer Mars Stealer MetaStealer Raccoon RedLine Stealer Vidar
2022-05-21Github (x-junior)Mohamed Ashraf
@online{ashraf:20220521:deep:0e3523b, author = {Mohamed Ashraf}, title = {{Deep Analysis of Mars Stealer}}, date = {2022-05-21}, organization = {Github (x-junior)}, url = {https://x-junior.github.io/malware%20analysis/MarsStealer/}, language = {English}, urldate = {2022-05-23} } Deep Analysis of Mars Stealer
Mars Stealer
2022-05-18eSentireeSentire Threat Response Unit (TRU)
@online{tru:20220518:esentire:662b9d9, author = {eSentire Threat Response Unit (TRU)}, title = {{eSentire Threat Intelligence Malware Analysis: Mars Stealer}}, date = {2022-05-18}, organization = {eSentire}, url = {https://www.esentire.com/blog/esentire-threat-intelligence-malware-analysis-mars-stealer}, language = {English}, urldate = {2022-05-24} } eSentire Threat Intelligence Malware Analysis: Mars Stealer
Mars Stealer
2022-05-17Microsoft SecurityBerman Enconado, Laurie Kirk
@online{enconado:20220517:in:c234e4d, author = {Berman Enconado and Laurie Kirk}, title = {{In hot pursuit of ‘cryware’: Defending hot wallets from attacks}}, date = {2022-05-17}, organization = {Microsoft Security}, url = {https://www.microsoft.com/security/blog/2022/05/17/in-hot-pursuit-of-cryware-defending-hot-wallets-from-attacks/}, language = {English}, urldate = {2022-05-25} } In hot pursuit of ‘cryware’: Defending hot wallets from attacks
Mars Stealer RedLine Stealer
2022-04-20InfoSec InstitutePedro Tavares
@online{tavares:20220420:mars:6bb8872, author = {Pedro Tavares}, title = {{Mars Stealer malware analysis}}, date = {2022-04-20}, organization = {InfoSec Institute}, url = {https://resources.infosecinstitute.com/topic/mars-stealer-malware-analysis/}, language = {English}, urldate = {2022-07-25} } Mars Stealer malware analysis
Mars Stealer
2022-04-11eSentireeSentire Threat Response Unit (TRU)
@online{tru:20220411:fake:e57b0f2, author = {eSentire Threat Response Unit (TRU)}, title = {{Fake Chrome Setup Leads to NetSupportManager RAT and Mars Stealer}}, date = {2022-04-11}, organization = {eSentire}, url = {https://www.esentire.com/blog/fake-chrome-setup-leads-to-netsupportmanager-rat-and-mars-stealer}, language = {English}, urldate = {2022-05-24} } Fake Chrome Setup Leads to NetSupportManager RAT and Mars Stealer
Mars Stealer NetSupportManager RAT
2022-04-10Bleeping ComputerBill Toulas
@online{toulas:20220410:new:1241933, author = {Bill Toulas}, title = {{New Meta information stealer distributed in malspam campaign}}, date = {2022-04-10}, organization = {Bleeping Computer}, url = {https://www.bleepingcomputer.com/news/security/new-meta-information-stealer-distributed-in-malspam-campaign/}, language = {English}, urldate = {2022-05-05} } New Meta information stealer distributed in malspam campaign
BlackGuard Mars Stealer Raccoon
2022-04-07SekoiaThreat & Detection Research Team
@online{team:20220407:mars:9a72e1f, author = {Threat & Detection Research Team}, title = {{Mars, a red-hot information stealer}}, date = {2022-04-07}, organization = {Sekoia}, url = {https://blog.sekoia.io/mars-a-red-hot-information-stealer/}, language = {English}, urldate = {2022-04-08} } Mars, a red-hot information stealer
Mars Stealer
2022-04-05Malwarebytes LabsAnkur Saini, Hossein Jazi, Jérôme Segura
@online{saini:20220405:colibri:ee97c2e, author = {Ankur Saini and Hossein Jazi and Jérôme Segura}, title = {{Colibri Loader combines Task Scheduler and PowerShell in clever persistence technique}}, date = {2022-04-05}, organization = {Malwarebytes Labs}, url = {https://blog.malwarebytes.com/threat-intelligence/2022/04/colibri-loader-combines-task-scheduler-and-powershell-in-clever-persistence-technique/}, language = {English}, urldate = {2022-06-09} } Colibri Loader combines Task Scheduler and PowerShell in clever persistence technique
Colibri Loader Mars Stealer
2022-03-30Cert-UACert-UA
@online{certua:20220330:mass:5bc04fd, author = {Cert-UA}, title = {{Mass distribution of the MarsStealer malware among citizens of Ukraine and domestic organizations (CERT-UA#4315)}}, date = {2022-03-30}, organization = {Cert-UA}, url = {https://cert.gov.ua/article/38606}, language = {Ukrainian}, urldate = {2022-04-04} } Mass distribution of the MarsStealer malware among citizens of Ukraine and domestic organizations (CERT-UA#4315)
Mars Stealer
2022-03-29MorphisecArnold Osipov
@online{osipov:20220329:exclusive:37a9d8b, author = {Arnold Osipov}, title = {{Exclusive Threat Research: Mars (Stealer) Attacks!}}, date = {2022-03-29}, organization = {Morphisec}, url = {https://blog.morphisec.com/threat-research-mars-stealer}, language = {English}, urldate = {2022-03-31} } Exclusive Threat Research: Mars (Stealer) Attacks!
Mars Stealer
2022-03-23InfoSec Handlers Diary BlogBrad Duncan
@online{duncan:20220323:arkei:b2a08f5, author = {Brad Duncan}, title = {{Arkei Variants: From Vidar to Mars Stealer}}, date = {2022-03-23}, organization = {InfoSec Handlers Diary Blog}, url = {https://isc.sans.edu/diary/rss/28468}, language = {English}, urldate = {2022-03-25} } Arkei Variants: From Vidar to Mars Stealer
Arkei Stealer Mars Stealer Vidar
2022-02-22CyberIntShmuel Gihon
@online{gihon:20220222:like:5154c54, author = {Shmuel Gihon}, title = {{Like Father Like Son? New Mars Stealer}}, date = {2022-02-22}, organization = {CyberInt}, url = {https://cyberint.com/blog/research/mars-stealer/}, language = {English}, urldate = {2022-03-23} } Like Father Like Son? New Mars Stealer
Mars Stealer Oski Stealer
2022-02-013xp0rt3xp0rt
@online{3xp0rt:20220201:mars:3ff37ea, author = {3xp0rt}, title = {{Mars Stealer: Oski refactoring}}, date = {2022-02-01}, organization = {3xp0rt}, url = {https://3xp0rt.com/posts/mars-stealer}, language = {English}, urldate = {2022-04-15} } Mars Stealer: Oski refactoring
Mars Stealer Oski Stealer
Yara Rules
[TLP:WHITE] win_mars_stealer_auto (20230125 | Detects win.mars_stealer.)
rule win_mars_stealer_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.mars_stealer."
        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.mars_stealer"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 8b4508 50 e8???????? 83c414 8b4d1c 51 8b5518 }
            // n = 7, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   8b4d1c               | mov                 ecx, dword ptr [ebp + 0x1c]
            //   51                   | push                ecx
            //   8b5518               | mov                 edx, dword ptr [ebp + 0x18]

        $sequence_1 = { 8b95f4f9ffff 52 ff15???????? a1???????? }
            // n = 4, score = 100
            //   8b95f4f9ffff         | mov                 edx, dword ptr [ebp - 0x60c]
            //   52                   | push                edx
            //   ff15????????         |                     
            //   a1????????           |                     

        $sequence_2 = { ff15???????? 83c404 8985d0feffff 8b85d0feffff 8945f4 6a00 8d4dfc }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   83c404               | add                 esp, 4
            //   8985d0feffff         | mov                 dword ptr [ebp - 0x130], eax
            //   8b85d0feffff         | mov                 eax, dword ptr [ebp - 0x130]
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   6a00                 | push                0
            //   8d4dfc               | lea                 ecx, [ebp - 4]

        $sequence_3 = { e8???????? 83c404 8bc8 8b85f4fbffff 33d2 f7f1 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8bc8                 | mov                 ecx, eax
            //   8b85f4fbffff         | mov                 eax, dword ptr [ebp - 0x40c]
            //   33d2                 | xor                 edx, edx
            //   f7f1                 | div                 ecx

        $sequence_4 = { 6bc934 034dfc 898d3cfbffff b904000000 bf???????? }
            // n = 5, score = 100
            //   6bc934               | imul                ecx, ecx, 0x34
            //   034dfc               | add                 ecx, dword ptr [ebp - 4]
            //   898d3cfbffff         | mov                 dword ptr [ebp - 0x4c4], ecx
            //   b904000000           | mov                 ecx, 4
            //   bf????????           |                     

        $sequence_5 = { e8???????? 83c40c 8b450c 0fb70cc5ba664100 }
            // n = 4, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   0fb70cc5ba664100     | movzx               ecx, word ptr [eax*8 + 0x4166ba]

        $sequence_6 = { 51 ff15???????? 8d95a8fcffff 52 8d85a0fbffff }
            // n = 5, score = 100
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8d95a8fcffff         | lea                 edx, [ebp - 0x358]
            //   52                   | push                edx
            //   8d85a0fbffff         | lea                 eax, [ebp - 0x460]

        $sequence_7 = { 51 ff15???????? 8b95d4d6ffff 52 8d8578ecffff 50 }
            // n = 6, score = 100
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8b95d4d6ffff         | mov                 edx, dword ptr [ebp - 0x292c]
            //   52                   | push                edx
            //   8d8578ecffff         | lea                 eax, [ebp - 0x1388]
            //   50                   | push                eax

        $sequence_8 = { e8???????? 8b4508 83e001 740d 8b4dfc 51 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   83e001               | and                 eax, 1
            //   740d                 | je                  0xf
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   51                   | push                ecx

        $sequence_9 = { 50 ff15???????? 83c404 8985dcf7ffff 8b85dcf7ffff }
            // n = 5, score = 100
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83c404               | add                 esp, 4
            //   8985dcf7ffff         | mov                 dword ptr [ebp - 0x824], eax
            //   8b85dcf7ffff         | mov                 eax, dword ptr [ebp - 0x824]

    condition:
        7 of them and filesize < 219136
}
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