SYMBOLCOMMON_NAMEaka. SYNONYMS
win.phobos (Back to overview)

Phobos


MalwareBytes states that Phobos is one of the ransomware families that are distributed via hacked Remote Desktop (RDP) connections. This isn't surprising, as hacked RDP servers are a cheap commodity on the underground market, and can make for an attractive and cost efficient dissemination vector for threat groups.

References
2022-05-09MicrosoftMicrosoft 365 Defender Threat Intelligence Team, Microsoft Threat Intelligence Center (MSTIC)
@online{team:20220509:ransomwareasaservice:13ec472, author = {Microsoft 365 Defender Threat Intelligence Team and Microsoft Threat Intelligence Center (MSTIC)}, title = {{Ransomware-as-a-service: Understanding the cybercrime gig economy and how to protect yourself}}, date = {2022-05-09}, organization = {Microsoft}, url = {https://www.microsoft.com/security/blog/2022/05/09/ransomware-as-a-service-understanding-the-cybercrime-gig-economy-and-how-to-protect-yourself}, language = {English}, urldate = {2022-05-17} } Ransomware-as-a-service: Understanding the cybercrime gig economy and how to protect yourself
AnchorDNS BlackCat BlackMatter Conti DarkSide HelloKitty Hive LockBit REvil FAKEUPDATES Griffon ATOMSILO BazarBackdoor BlackCat BlackMatter Blister Cobalt Strike Conti DarkSide Emotet FiveHands Gozi HelloKitty Hive IcedID ISFB JSSLoader LockBit LockFile Maze NightSky Pandora Phobos Phoenix Locker PhotoLoader QakBot REvil Rook Ryuk SystemBC TrickBot WastedLocker BRONZE STARLIGHT
2022-03-03PARAFLAREBex Nitert
@online{nitert:20220303:luci:3b608e9, author = {Bex Nitert}, title = {{Luci Spools The Fun With Phobos Ransomware}}, date = {2022-03-03}, organization = {PARAFLARE}, url = {https://paraflare.com/luci-spools-the-fun-with-phobos-ransomware/}, language = {English}, urldate = {2022-03-07} } Luci Spools The Fun With Phobos Ransomware
Phobos
2021-11-05BlackberryThe BlackBerry Research & Intelligence Team
@online{team:20211105:hunter:3c7bab9, author = {The BlackBerry Research & Intelligence Team}, title = {{Hunter Becomes Hunted: Zebra2104 Hides a Herd of Malware}}, date = {2021-11-05}, organization = {Blackberry}, url = {https://blogs.blackberry.com/en/2021/11/zebra2104}, language = {English}, urldate = {2021-11-08} } Hunter Becomes Hunted: Zebra2104 Hides a Herd of Malware
Cobalt Strike DoppelDridex Mount Locker Phobos StrongPity
2021-10-07KasperskyFedor Sinitsyn, Yanis Zinchenko
@online{sinitsyn:20211007:ransomware:b5e74a3, author = {Fedor Sinitsyn and Yanis Zinchenko}, title = {{Ransomware in the CIS}}, date = {2021-10-07}, organization = {Kaspersky}, url = {https://securelist.com/cis-ransomware/104452/}, language = {English}, urldate = {2021-10-11} } Ransomware in the CIS
Cryakl Dharma Hakbit Phobos Void
2021-07-22Serviciul Român de InformațiiServiciul Român de Informații
@online{informaii:20210722:cyber:03cb12f, author = {Serviciul Român de Informații}, title = {{Cyber ​​attack with PHOBOS ransomware application}}, date = {2021-07-22}, organization = {Serviciul Român de Informații}, url = {https://www.sri.ro/articole/atac-cibernetic-cu-aplicatia-ransomware-phobos}, language = {Romanian}, urldate = {2021-07-26} } Cyber ​​attack with PHOBOS ransomware application
Phobos
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
2021-05-10Mal-Eatsmal_eats
@online{maleats:20210510:overview:50ff3b3, author = {mal_eats}, title = {{Overview of Campo, a new attack campaign targeting Japan}}, date = {2021-05-10}, organization = {Mal-Eats}, url = {https://mal-eats.net/2021/05/10/campo_new_attack_campaign_targeting_japan/}, language = {English}, urldate = {2021-05-13} } Overview of Campo, a new attack campaign targeting Japan
AnchorDNS BazarBackdoor Cobalt Strike ISFB Phobos TrickBot Zloader
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
2021-04-26CoveWareCoveWare
@online{coveware:20210426:ransomware:12586d5, author = {CoveWare}, title = {{Ransomware Attack Vectors Shift as New Software Vulnerability Exploits Abound}}, date = {2021-04-26}, organization = {CoveWare}, url = {https://www.coveware.com/blog/ransomware-attack-vectors-shift-as-new-software-vulnerability-exploits-abound}, language = {English}, urldate = {2021-05-13} } Ransomware Attack Vectors Shift as New Software Vulnerability Exploits Abound
Avaddon Clop Conti DarkSide Egregor LockBit Mailto Phobos REvil Ryuk SunCrypt
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 Pony Predator The Thief QakBot Raccoon RTM SmokeLoader Zloader
2021-04-02MorphisecMichael Gorelik
@online{gorelik:20210402:fair:6f62577, author = {Michael Gorelik}, title = {{The “Fair” Upgrade Variant of Phobos Ransomware}}, date = {2021-04-02}, organization = {Morphisec}, url = {https://blog.morphisec.com/the-fair-upgrade-variant-of-phobos-ransomware}, language = {English}, urldate = {2021-04-06} } The “Fair” Upgrade Variant of Phobos Ransomware
Phobos
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
2020-10-13FortinetXiaopeng Zhang
@online{zhang:20201013:deep:e95d109, author = {Xiaopeng Zhang}, title = {{Deep Analysis – The EKING Variant of Phobos Ransomware}}, date = {2020-10-13}, organization = {Fortinet}, url = {https://www.fortinet.com/blog/threat-research/deep-analysis-the-eking-variant-of-phobos-ransomware}, language = {English}, urldate = {2020-10-20} } Deep Analysis – The EKING Variant of Phobos Ransomware
Phobos
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
2020-04-24Advanced 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
2020-03-04CrowdStrikeCrowdStrike
@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 APT23 APT31 APT39 APT40 BlackTech BuhTrap Charming Kitten CLOCKWORK SPIDER DOPPEL SPIDER FIN7 Gamaredon Group GOBLIN PANDA MONTY SPIDER MUSTANG PANDA NARWHAL SPIDER NOCTURNAL SPIDER PINCHY SPIDER SALTY SPIDER SCULLY SPIDER SMOKY SPIDER Thrip VENOM SPIDER VICEROY TIGER
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
2020-01-17SecureworksTamada 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
2020-01-10MalwarebytesJovi Umawing
@online{umawing:20200110:threat:9e615e1, author = {Jovi Umawing}, title = {{Threat spotlight: Phobos ransomware lives up to its name}}, date = {2020-01-10}, organization = {Malwarebytes}, url = {https://blog.malwarebytes.com/threat-spotlight/2020/01/threat-spotlight-phobos-ransomware-lives-up-to-its-name/}, language = {English}, urldate = {2020-01-22} } Threat spotlight: Phobos ransomware lives up to its name
Phobos
2020BlackberryBlackberry Research
@techreport{research:2020:state:e5941af, author = {Blackberry Research}, title = {{State of Ransomware}}, date = {2020}, institution = {Blackberry}, url = {https://www.blackberry.com/content/dam/blackberry-com/asset/enterprise/pdf/wp-spark-state-of-ransomware.pdf}, language = {English}, urldate = {2021-01-01} } State of Ransomware
Maze MedusaLocker Nefilim Phobos REvil Ryuk STOP
2019-07-24Malwarebyteshasherezade
@online{hasherezade:20190724:deep:c7d1aed, author = {hasherezade}, title = {{A deep dive into Phobos ransomware}}, date = {2019-07-24}, organization = {Malwarebytes}, url = {https://blog.malwarebytes.com/threat-analysis/2019/07/a-deep-dive-into-phobos-ransomware/}, language = {English}, urldate = {2020-01-13} } A deep dive into Phobos ransomware
Phobos
2019-01-29CodeWareCoveWare
@online{coveware:20190129:phobos:8423f74, author = {CoveWare}, title = {{Phobos Ransomware, A Combo of CrySiS and Dharma}}, date = {2019-01-29}, organization = {CodeWare}, url = {https://www.coveware.com/blog/phobos-ransomware-distributed-dharma-crew}, language = {English}, urldate = {2020-01-08} } Phobos Ransomware, A Combo of CrySiS and Dharma
Phobos
Yara Rules
[TLP:WHITE] win_phobos_auto (20230125 | Detects win.phobos.)
rule win_phobos_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.phobos."
        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.phobos"
        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 = { 81c6b2000000 89b7a8000000 8b75fc 6a02 8945e0 8945e4 8d45e0 }
            // n = 7, score = 100
            //   81c6b2000000         | add                 esi, 0xb2
            //   89b7a8000000         | mov                 dword ptr [edi + 0xa8], esi
            //   8b75fc               | mov                 esi, dword ptr [ebp - 4]
            //   6a02                 | push                2
            //   8945e0               | mov                 dword ptr [ebp - 0x20], eax
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   8d45e0               | lea                 eax, [ebp - 0x20]

        $sequence_1 = { 8d440002 8945f8 8d45f4 50 6819010200 }
            // n = 5, score = 100
            //   8d440002             | lea                 eax, [eax + eax + 2]
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   6819010200           | push                0x20119

        $sequence_2 = { ff7510 ff15???????? 8945fc 83f8ff 0f849c010000 ff75ec 8d4620 }
            // n = 7, score = 100
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   ff15????????         |                     
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   83f8ff               | cmp                 eax, -1
            //   0f849c010000         | je                  0x1a2
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   8d4620               | lea                 eax, [esi + 0x20]

        $sequence_3 = { ff7508 e8???????? 83c40c 8bd8 66ff4b04 66ff4e04 }
            // n = 6, score = 100
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8bd8                 | mov                 ebx, eax
            //   66ff4b04             | dec                 word ptr [ebx + 4]
            //   66ff4e04             | dec                 word ptr [esi + 4]

        $sequence_4 = { e8???????? 59 59 ff45f4 837dd800 743e 837dec00 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   ff45f4               | inc                 dword ptr [ebp - 0xc]
            //   837dd800             | cmp                 dword ptr [ebp - 0x28], 0
            //   743e                 | je                  0x40
            //   837dec00             | cmp                 dword ptr [ebp - 0x14], 0

        $sequence_5 = { 5b c6043080 3bc3 40 730e }
            // n = 5, score = 100
            //   5b                   | pop                 ebx
            //   c6043080             | mov                 byte ptr [eax + esi], 0x80
            //   3bc3                 | cmp                 eax, ebx
            //   40                   | inc                 eax
            //   730e                 | jae                 0x10

        $sequence_6 = { 8b4508 ebeb 8b7df8 eb1b 0fb707 }
            // n = 5, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   ebeb                 | jmp                 0xffffffed
            //   8b7df8               | mov                 edi, dword ptr [ebp - 8]
            //   eb1b                 | jmp                 0x1d
            //   0fb707               | movzx               eax, word ptr [edi]

        $sequence_7 = { eb01 4f ff75fc e8???????? 59 }
            // n = 5, score = 100
            //   eb01                 | jmp                 3
            //   4f                   | dec                 edi
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_8 = { 57 50 e8???????? 8b4604 ff760c }
            // n = 5, score = 100
            //   57                   | push                edi
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b4604               | mov                 eax, dword ptr [esi + 4]
            //   ff760c               | push                dword ptr [esi + 0xc]

        $sequence_9 = { 837e0800 7446 8b06 85c0 7440 8b0f 894e04 }
            // n = 7, score = 100
            //   837e0800             | cmp                 dword ptr [esi + 8], 0
            //   7446                 | je                  0x48
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   85c0                 | test                eax, eax
            //   7440                 | je                  0x42
            //   8b0f                 | mov                 ecx, dword ptr [edi]
            //   894e04               | mov                 dword ptr [esi + 4], ecx

    condition:
        7 of them and filesize < 139264
}
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