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 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
2020-02-13QianxinQi 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 elf.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 (20211008 | Detects win.kerrdown.)
rule win_kerrdown_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-10-07"
        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 = "20211007"
        malpedia_hash = "e5b790e0f888f252d49063a1251ca60ec2832535"
        malpedia_version = "20211008"
        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 = { 8ac8 8ad4 c0ea04 8ac4 c0e102 80e203 02d1 }
            // n = 7, score = 200
            //   8ac8                 | mov                 cl, al
            //   8ad4                 | mov                 dl, ah
            //   c0ea04               | shr                 dl, 4
            //   8ac4                 | mov                 al, ah
            //   c0e102               | shl                 cl, 2
            //   80e203               | and                 dl, 3
            //   02d1                 | add                 dl, cl

        $sequence_1 = { 8bcf e8???????? 43 3bde 7ced 8bc7 8b4df4 }
            // n = 7, score = 200
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     
            //   43                   | inc                 ebx
            //   3bde                 | cmp                 ebx, esi
            //   7ced                 | jl                  0xffffffef
            //   8bc7                 | mov                 eax, edi
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]

        $sequence_2 = { 6a00 ff15???????? 837d1c10 8d4d08 ff7518 0f434d08 }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   837d1c10             | cmp                 dword ptr [ebp + 0x1c], 0x10
            //   8d4d08               | lea                 ecx, dword ptr [ebp + 8]
            //   ff7518               | push                dword ptr [ebp + 0x18]
            //   0f434d08             | cmovae              ecx, dword ptr [ebp + 8]

        $sequence_3 = { e8???????? 88441de8 43 83fb04 7ce3 8b45e8 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   88441de8             | mov                 byte ptr [ebp + ebx - 0x18], al
            //   43                   | inc                 ebx
            //   83fb04               | cmp                 ebx, 4
            //   7ce3                 | jl                  0xffffffe5
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]

        $sequence_4 = { 0f878d000000 3bfe 7366 52 56 }
            // n = 5, score = 200
            //   0f878d000000         | ja                  0x93
            //   3bfe                 | cmp                 edi, esi
            //   7366                 | jae                 0x68
            //   52                   | push                edx
            //   56                   | push                esi

        $sequence_5 = { e8???????? 85c0 0f84ee200000 c3 833d????????ff 7503 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f84ee200000         | je                  0x20f4
            //   c3                   | ret                 
            //   833d????????ff       |                     
            //   7503                 | jne                 5

        $sequence_6 = { 0f43c1 85f6 741b 56 }
            // n = 4, score = 200
            //   0f43c1               | cmovae              eax, ecx
            //   85f6                 | test                esi, esi
            //   741b                 | je                  0x1d
            //   56                   | push                esi

        $sequence_7 = { b9???????? 2bc2 50 68???????? e8???????? 5f 5d }
            // n = 7, score = 200
            //   b9????????           |                     
            //   2bc2                 | sub                 eax, edx
            //   50                   | push                eax
            //   68????????           |                     
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5d                   | pop                 ebp

        $sequence_8 = { c745f800000000 83feff 7438 6a00 8d45f8 50 }
            // n = 6, score = 200
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0
            //   83feff               | cmp                 esi, -1
            //   7438                 | je                  0x3a
            //   6a00                 | push                0
            //   8d45f8               | lea                 eax, dword ptr [ebp - 8]
            //   50                   | push                eax

        $sequence_9 = { 8935???????? b8???????? 0f43c1 c6043000 5e b8???????? 5f }
            // n = 7, score = 200
            //   8935????????         |                     
            //   b8????????           |                     
            //   0f43c1               | cmovae              eax, ecx
            //   c6043000             | mov                 byte ptr [eax + esi], 0
            //   5e                   | pop                 esi
            //   b8????????           |                     
            //   5f                   | pop                 edi

    condition:
        7 of them and filesize < 278528
}
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