SYMBOLCOMMON_NAMEaka. SYNONYMS
win.kerrdown (Back to overview)

KerrDown

Actor(s): APT32

URLhaus    

There is no description at this point.

References
2021-02-24Amnesty InternationalAmnesty International
@techreport{international:20210224:click:aec5095, author = {Amnesty International}, title = {{Click and Bait: Vietnamese Human Rights Defenders Targeted with Spyware Attacks}}, date = {2021-02-24}, institution = {Amnesty International}, url = {https://www.amnesty.de/sites/default/files/2021-02/Amnesty-Bericht-Vietnam-Click-And-Bait-Blogger-Deutschland-Spionage-Menschenrechtsverteidiger-Februar-2021.pdf}, language = {English}, urldate = {2021-02-25} } Click and Bait: Vietnamese Human Rights Defenders Targeted with Spyware Attacks
KerrDown
2021-02-24Github (AmnestyTech)Amnesty International
@online{international:20210224:overview:95b80e0, author = {Amnesty International}, title = {{Overview of Ocean Lotus Samples used to target Vietnamese Human Rights Defenders}}, date = {2021-02-24}, organization = {Github (AmnestyTech)}, url = {https://github.com/AmnestyTech/investigations/tree/master/2021-02-24_vietnam}, language = {English}, urldate = {2021-02-25} } Overview of Ocean Lotus Samples used to target Vietnamese Human Rights Defenders
OceanLotus Cobalt Strike KerrDown
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 BazarBackdoor Clop Cobalt Strike Conti 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 ShadowPad SmokeLoader Snake SUNBURST SunCrypt TEARDROP TrickBot WastedLocker Winnti Zloader KNOCKOUT SPIDER OUTLAW SPIDER RIDDLE SPIDER SOLAR SPIDER VIKING SPIDER
2020-11-10Recorded FutureInsikt Group®
@techreport{group:20201110:new:97e5657, author = {Insikt Group®}, title = {{New APT32 Malware Campaign Targets Cambodian Government}}, date = {2020-11-10}, institution = {Recorded Future}, url = {https://go.recordedfuture.com/hubfs/reports/cta-2020-1110.pdf}, language = {English}, urldate = {2020-11-11} } New APT32 Malware Campaign Targets Cambodian Government
KerrDown METALJACK SOUNDBITE
2020-11-06VolexitySteven Adair, Thomas Lancaster, Volexity Threat Research
@online{adair:20201106:oceanlotus:f7b11ac, author = {Steven Adair and Thomas Lancaster and Volexity Threat Research}, title = {{OceanLotus: Extending Cyber Espionage Operations Through Fake Websites}}, date = {2020-11-06}, organization = {Volexity}, url = {https://www.volexity.com/blog/2020/11/06/oceanlotus-extending-cyber-espionage-operations-through-fake-websites/}, language = {English}, urldate = {2020-11-09} } OceanLotus: Extending Cyber Espionage Operations Through Fake Websites
Cobalt Strike KerrDown APT32
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
2020-02-13QianxinQi Anxin Threat Intelligence Center
@techreport{center:20200213:report:146d333, author = {Qi Anxin Threat Intelligence Center}, title = {{APT Report 2019}}, date = {2020-02-13}, institution = {Qianxin}, url = {https://ti.qianxin.com/uploads/2020/02/13/cb78386a082f465f259b37dae5df4884.pdf}, language = {English}, urldate = {2020-02-27} } APT Report 2019
Chrysaor Exodus Dacls VPNFilter DNSRat Griffon KopiLuwak More_eggs SQLRat AppleJeus BONDUPDATER Agent.BTZ Anchor AndroMut AppleJeus BOOSTWRITE Brambul Carbanak Cobalt Strike Dacls DistTrack DNSpionage Dtrack ELECTRICFISH FlawedAmmyy FlawedGrace Get2 Grateful POS HOPLIGHT Imminent Monitor RAT jason Joanap KerrDown KEYMARBLE Lambert LightNeuron LoJax MiniDuke PolyglotDuke PowerRatankba Rising Sun SDBbot ServHelper Snatch Stuxnet TinyMet tRat TrickBot Volgmer X-Agent Zebrocy
2020SecureworksSecureWorks
@online{secureworks:2020:tin:ccd6795, author = {SecureWorks}, title = {{TIN WOODLAWN}}, date = {2020}, organization = {Secureworks}, url = {https://www.secureworks.com/research/threat-profiles/tin-woodlawn}, language = {English}, urldate = {2020-05-23} } TIN WOODLAWN
Cobalt Strike KerrDown MimiKatz PHOREAL RatSnif Remy SOUNDBITE APT32
2019-05-31TradaHackingm4n0w4r
@online{m4n0w4r:20190531:thng:c687d46, author = {m4n0w4r}, title = {{Thưởng tết….}}, date = {2019-05-31}, organization = {TradaHacking}, url = {https://tradahacking.vn/th%C6%B0%E1%BB%9Fng-t%E1%BA%BFt-fbcbbed49da7}, language = {Vietnamese}, urldate = {2020-01-10} } Thưởng tết….
KerrDown
2019-03-24One Night in NorfolkKevin Perlow
@online{perlow:20190324:jeshell:439ae8b, author = {Kevin Perlow}, title = {{JEShell: An OceanLotus (APT32) Backdoor}}, date = {2019-03-24}, organization = {One Night in Norfolk}, url = {https://norfolkinfosec.com/jeshell-an-oceanlotus-apt32-backdoor/}, language = {English}, urldate = {2020-05-19} } JEShell: An OceanLotus (APT32) Backdoor
Cobalt Strike KerrDown
2019-02-02CyStackBach Nguyen
@online{nguyen:20190202:wordbased:89a23db, author = {Bach Nguyen}, title = {{Word-based Malware Attack}}, date = {2019-02-02}, organization = {CyStack}, url = {https://blog.cystack.net/word-based-malware-attack/}, language = {English}, urldate = {2019-12-20} } Word-based Malware Attack
KerrDown
2019-02-01Palo Alto Networks Unit 42Vicky Ray, Kaoru Hayashi
@online{ray:20190201:tracking:479c2b7, author = {Vicky Ray and Kaoru Hayashi}, title = {{Tracking OceanLotus’ new Downloader, KerrDown}}, date = {2019-02-01}, organization = {Palo Alto Networks Unit 42}, url = {https://unit42.paloaltonetworks.com/tracking-oceanlotus-new-downloader-kerrdown/}, language = {English}, urldate = {2019-10-23} } Tracking OceanLotus’ new Downloader, KerrDown
KerrDown
Yara Rules
[TLP:WHITE] win_kerrdown_auto (20230407 | Detects win.kerrdown.)
rule win_kerrdown_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.kerrdown."
        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.kerrdown"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { 2bc8 83f904 722b 83f923 772b 8bc8 51 }
            // n = 7, score = 200
            //   2bc8                 | sub                 ecx, eax
            //   83f904               | cmp                 ecx, 4
            //   722b                 | jb                  0x2d
            //   83f923               | cmp                 ecx, 0x23
            //   772b                 | ja                  0x2d
            //   8bc8                 | mov                 ecx, eax
            //   51                   | push                ecx

        $sequence_1 = { 8b41fc 3bc1 732d 2bc8 83f904 722b 83f923 }
            // n = 7, score = 200
            //   8b41fc               | mov                 eax, dword ptr [ecx - 4]
            //   3bc1                 | cmp                 eax, ecx
            //   732d                 | jae                 0x2f
            //   2bc8                 | sub                 ecx, eax
            //   83f904               | cmp                 ecx, 4
            //   722b                 | jb                  0x2d
            //   83f923               | cmp                 ecx, 0x23

        $sequence_2 = { 0f854d0d0000 eb00 f30f7e442404 660f2815???????? 660f28c8 660f28f8 }
            // n = 6, score = 200
            //   0f854d0d0000         | jne                 0xd53
            //   eb00                 | jmp                 2
            //   f30f7e442404         | movq                xmm0, qword ptr [esp + 4]
            //   660f2815????????     |                     
            //   660f28c8             | movapd              xmm1, xmm0
            //   660f28f8             | movapd              xmm7, xmm0

        $sequence_3 = { c60100 e8???????? e8???????? 8b442430 }
            // n = 4, score = 200
            //   c60100               | mov                 byte ptr [ecx], 0
            //   e8????????           |                     
            //   e8????????           |                     
            //   8b442430             | mov                 eax, dword ptr [esp + 0x30]

        $sequence_4 = { 7cec 8b4de0 33f6 8b45dc }
            // n = 4, score = 200
            //   7cec                 | jl                  0xffffffee
            //   8b4de0               | mov                 ecx, dword ptr [ebp - 0x20]
            //   33f6                 | xor                 esi, esi
            //   8b45dc               | mov                 eax, dword ptr [ebp - 0x24]

        $sequence_5 = { 33f6 c747140f000000 b8cd220000 837f1410 }
            // n = 4, score = 200
            //   33f6                 | xor                 esi, esi
            //   c747140f000000       | mov                 dword ptr [edi + 0x14], 0xf
            //   b8cd220000           | mov                 eax, 0x22cd
            //   837f1410             | cmp                 dword ptr [edi + 0x14], 0x10

        $sequence_6 = { e8???????? 8b442430 83c418 83f810 722f 8b4c2404 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   8b442430             | mov                 eax, dword ptr [esp + 0x30]
            //   83c418               | add                 esp, 0x18
            //   83f810               | cmp                 eax, 0x10
            //   722f                 | jb                  0x31
            //   8b4c2404             | mov                 ecx, dword ptr [esp + 4]

        $sequence_7 = { 83c40c 8b0d???????? 83ff10 8935???????? b8???????? }
            // n = 5, score = 200
            //   83c40c               | add                 esp, 0xc
            //   8b0d????????         |                     
            //   83ff10               | cmp                 edi, 0x10
            //   8935????????         |                     
            //   b8????????           |                     

        $sequence_8 = { 8b3d???????? 83c40c 8b0d???????? 83ff10 8935???????? b8???????? }
            // n = 6, score = 200
            //   8b3d????????         |                     
            //   83c40c               | add                 esp, 0xc
            //   8b0d????????         |                     
            //   83ff10               | cmp                 edi, 0x10
            //   8935????????         |                     
            //   b8????????           |                     

        $sequence_9 = { 8a45eb 243f 884de5 02c2 33f6 8845e6 0fb64435e4 }
            // n = 7, score = 200
            //   8a45eb               | mov                 al, byte ptr [ebp - 0x15]
            //   243f                 | and                 al, 0x3f
            //   884de5               | mov                 byte ptr [ebp - 0x1b], cl
            //   02c2                 | add                 al, dl
            //   33f6                 | xor                 esi, esi
            //   8845e6               | mov                 byte ptr [ebp - 0x1a], al
            //   0fb64435e4           | movzx               eax, byte ptr [ebp + esi - 0x1c]

    condition:
        7 of them and filesize < 278528
}
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