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 (20210616 | Detects win.kerrdown.)
rule win_kerrdown_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        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 = "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 = { 7cef 33db 0f1f4000 8a441de8 }
            // n = 4, score = 200
            //   7cef                 | jl                  0xfffffff1
            //   33db                 | xor                 ebx, ebx
            //   0f1f4000             | nop                 dword ptr [eax]
            //   8a441de8             | mov                 al, byte ptr [ebp + ebx - 0x18]

        $sequence_1 = { b8???????? 0f43c1 c6043000 5e }
            // n = 4, score = 200
            //   b8????????           |                     
            //   0f43c1               | cmovae              eax, ecx
            //   c6043000             | mov                 byte ptr [eax + esi], 0
            //   5e                   | pop                 esi

        $sequence_2 = { 8855e4 33db 8a55ea 8aca }
            // n = 4, score = 200
            //   8855e4               | mov                 byte ptr [ebp - 0x1c], dl
            //   33db                 | xor                 ebx, ebx
            //   8a55ea               | mov                 dl, byte ptr [ebp - 0x16]
            //   8aca                 | mov                 cl, dl

        $sequence_3 = { 3bde 7ced 8bc7 8b4df4 64890d00000000 }
            // n = 5, score = 200
            //   3bde                 | cmp                 ebx, esi
            //   7ced                 | jl                  0xffffffef
            //   8bc7                 | mov                 eax, edi
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   64890d00000000       | mov                 dword ptr fs:[0], ecx

        $sequence_4 = { 50 8d45f4 64a300000000 6a40 6800100000 c745fc00000000 ff7518 }
            // n = 7, score = 200
            //   50                   | push                eax
            //   8d45f4               | lea                 eax, dword ptr [ebp - 0xc]
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   6a40                 | push                0x40
            //   6800100000           | push                0x1000
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   ff7518               | push                dword ptr [ebp + 0x18]

        $sequence_5 = { 837f1410 897dd4 897710 7202 8b0f c60100 }
            // n = 6, score = 200
            //   837f1410             | cmp                 dword ptr [edi + 0x14], 0x10
            //   897dd4               | mov                 dword ptr [ebp - 0x2c], edi
            //   897710               | mov                 dword ptr [edi + 0x10], esi
            //   7202                 | jb                  4
            //   8b0f                 | mov                 ecx, dword ptr [edi]
            //   c60100               | mov                 byte ptr [ecx], 0

        $sequence_6 = { 3d???????? 762a ff750c 83ff10 ba???????? b8???????? }
            // n = 6, score = 200
            //   3d????????           |                     
            //   762a                 | jbe                 0x2c
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   83ff10               | cmp                 edi, 0x10
            //   ba????????           |                     
            //   b8????????           |                     

        $sequence_7 = { 56 8b750c 83fefe 0f878d000000 3bfe }
            // n = 5, score = 200
            //   56                   | push                esi
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   83fefe               | cmp                 esi, -2
            //   0f878d000000         | ja                  0x93
            //   3bfe                 | cmp                 edi, esi

        $sequence_8 = { 0f1f4000 8a19 48 8945dc 80fb3d }
            // n = 5, score = 200
            //   0f1f4000             | nop                 dword ptr [eax]
            //   8a19                 | mov                 bl, byte ptr [ecx]
            //   48                   | dec                 eax
            //   8945dc               | mov                 dword ptr [ebp - 0x24], eax
            //   80fb3d               | cmp                 bl, 0x3d

        $sequence_9 = { 8b3d???????? 83c40c 8b0d???????? 83ff10 8935???????? b8???????? }
            // n = 6, score = 200
            //   8b3d????????         |                     
            //   83c40c               | add                 esp, 0xc
            //   8b0d????????         |                     
            //   83ff10               | cmp                 edi, 0x10
            //   8935????????         |                     
            //   b8????????           |                     

    condition:
        7 of them and filesize < 278528
}
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