SYMBOLCOMMON_NAMEaka. SYNONYMS
win.8t_dropper (Back to overview)

8.t Dropper

aka: 8t_dropper, RoyalRoad

Actor(s): Hellsing, Ice Fog, Pirate Panda, RANCOR, TA428, Tick, Tonto Team, Karma Panda

VTCollection    

8T_Dropper has been used by Chinese threat actor TA428 in order to install Cotx RAT onto victim's machines during Operation LagTime IT. According to Proofpoint the attack was developed against a number of government agencies in East Asia overseeing government information technology, domestic affairs, foreign affairs, economic development, and political processes. The dropper was delivered through an RTF document exploiting CVE-2018-0798.

References
2023-04-05Medium IlanduIlan Duhin
PortDoor - APT Backdoor analysis
ACBackdoor 8.t Dropper PortDoor
2023-03-07Check Point ResearchCheck Point Research
Pandas with a Soul: Chinese Espionage Attacks Against Southeast Asian Government Entities
5.t Downloader 8.t Dropper Soul
2023-02-07MalGamyMalGamy
The Approach of TA413 for Tibetan Targets
8.t Dropper LOWZERO
2022-09-22Recorded FutureInsikt Group®
Chinese State-Sponsored Group TA413 Adopts New Capabilities in Pursuit of Tibetan Targets
8.t Dropper LOWZERO
2022-07-07Sentinel LABSTom Hegel
Targets of Interest - Russian Organizations Increasingly Under Attack By Chinese APTs
8.t Dropper Korlia Tonto Team
2021-10-26KasperskyKaspersky Lab ICS CERT
APT attacks on industrial organizations in H1 2021
8.t Dropper AllaKore AsyncRAT GoldMax LimeRAT NjRAT NoxPlayer Raindrop ReverseRAT ShadowPad Zebrocy
2021-02-28PWC UKPWC UK
Cyber Threats 2020: A Year in Retrospect
elf.wellmess FlowerPower PowGoop 8.t Dropper Agent.BTZ Agent Tesla Appleseed Ave Maria Bankshot BazarBackdoor BLINDINGCAN Chinoxy Conti Cotx RAT Crimson RAT DUSTMAN Emotet FriedEx FunnyDream Hakbit Mailto Maze METALJACK Nefilim Oblique RAT Pay2Key PlugX QakBot REvil Ryuk StoneDrill StrongPity SUNBURST SUPERNOVA TrickBot TurlaRPC Turla SilentMoon WastedLocker WellMess Winnti ZeroCleare APT10 APT23 APT27 APT31 APT41 BlackTech BRONZE EDGEWOOD Inception Framework MUSTANG PANDA Red Charon Red Nue Sea Turtle Tonto Team
2021-01-13AlienVaultTom Hegel
A Global Perspective of the SideWinder APT
8.t Dropper Koadic SideWinder
2021-01-04nao_sec blognao_sec
Royal Road! Re:Dive
8.t Dropper Chinoxy FlowCloud FunnyDream Lookback
2020-09-16RiskIQJon Gross
RiskIQ: Adventures in Cookie Land - Part 2
8.t Dropper Chinoxy Poison Ivy
2020-08-19RiskIQCory Kennedy, Jon Gross
RiskIQ Adventures in Cookie Land - Part 1
8.t Dropper Chinoxy
2020-08-19NTT SecurityFumio Ozawa, Rintaro Koike, Shogo Hayashi
Operation LagTime IT: Colorful Panda Footprint
8.t Dropper Cotx RAT Poison Ivy TA428
2020-06-03Kaspersky LabsGiampaolo Dedola, GReAT, Mark Lechtik
Cycldek: Bridging the (air) gap
8.t Dropper NewCore RAT PlugX USBCulprit GOBLIN PANDA Hellsing
2020-03-21MalwareLab.plMaciej Kotowicz
On the Royal Road
8.t Dropper
2020-03-20Medium SebdravenSébastien Larinier
New version of chinoxy backdoor using COVID19 alerts document lure
8.t Dropper Chinoxy
2020-03-12Check PointCheck Point Research
Vicious Panda: The COVID Campaign
8.t Dropper BYEBY Enfal Korlia Poison Ivy
2020-03-12Check Point ResearchCheck Point
Vicious Panda: The COVID Campaign
8.t Dropper Vicious Panda
2020-03-11Virus BulletinGhareeb Saad, Michael Raggi
Attribution is in the object: using RTF object dimensions to track APT phishing weaponizers
8.t Dropper
2020-03-04CrowdStrikeCrowdStrike
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
2019-09-22Check Point ResearchCheck Point Research
Rancor: The Year of The Phish
8.t Dropper Cobalt Strike
2019-07-23ProofpointDennis Schwarz, Michael Raggi, Proofpoint Threat Insight Team
Chinese APT “Operation LagTime IT” Targets Government Information Technology Agencies in Eastern Asia
8.t Dropper Cotx RAT Poison Ivy TA428
2019-03-05AccentureAccenture
MUDCARP's Focus on Submarine Technologies
8.t Dropper APT40
2019-01-03m4n0w4r
Another malicious document with CVE-2017–11882
8.t Dropper
2018-11-03m4n0w4r
Là 1937CN hay OceanLotus hay Lazarus …
8.t Dropper
2018-07-31Medium SebdravenSébastien Larinier
Malicious document targets Vietnamese officials
8.t Dropper
2018-07-31Medium SebdravenSébastien Larinier
Malicious document targets Vietnamese officials
8.t Dropper PlugX 1937CN
Yara Rules
[TLP:WHITE] win_8t_dropper_auto (20230808 | Detects win.8t_dropper.)
rule win_8t_dropper_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-12-06"
        version = "1"
        description = "Detects win.8t_dropper."
        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.8t_dropper"
        malpedia_rule_date = "20231130"
        malpedia_hash = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351"
        malpedia_version = "20230808"
        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 = { 741b 56 6800700000 6a01 68???????? }
            // n = 5, score = 200
            //   741b                 | je                  0x1d
            //   56                   | push                esi
            //   6800700000           | push                0x7000
            //   6a01                 | push                1
            //   68????????           |                     

        $sequence_1 = { ff74240c e8???????? 83c40c c3 8b442408 83f801 }
            // n = 6, score = 200
            //   ff74240c             | push                dword ptr [esp + 0xc]
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   c3                   | ret                 
            //   8b442408             | mov                 eax, dword ptr [esp + 8]
            //   83f801               | cmp                 eax, 1

        $sequence_2 = { c6440c0e6e 8d4c2408 51 683f000f00 50 }
            // n = 5, score = 200
            //   c6440c0e6e           | mov                 byte ptr [esp + ecx + 0xe], 0x6e
            //   8d4c2408             | lea                 ecx, [esp + 8]
            //   51                   | push                ecx
            //   683f000f00           | push                0xf003f
            //   50                   | push                eax

        $sequence_3 = { 68???????? 50 ff15???????? 85c0 7559 8b4c2408 51 }
            // n = 7, score = 200
            //   68????????           |                     
            //   50                   | push                eax
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7559                 | jne                 0x5b
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]
            //   51                   | push                ecx

        $sequence_4 = { 50 ff15???????? 85c0 7559 8b4c2408 }
            // n = 5, score = 200
            //   50                   | push                eax
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7559                 | jne                 0x5b
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]

        $sequence_5 = { 49 c6440c0c52 c6440c0d75 c6440c0e6e }
            // n = 4, score = 200
            //   49                   | dec                 ecx
            //   c6440c0c52           | mov                 byte ptr [esp + ecx + 0xc], 0x52
            //   c6440c0d75           | mov                 byte ptr [esp + ecx + 0xd], 0x75
            //   c6440c0e6e           | mov                 byte ptr [esp + ecx + 0xe], 0x6e

        $sequence_6 = { 68???????? 6a02 50 8b442418 }
            // n = 4, score = 200
            //   68????????           |                     
            //   6a02                 | push                2
            //   50                   | push                eax
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]

        $sequence_7 = { 7559 8b4c2408 51 ff15???????? }
            // n = 4, score = 200
            //   7559                 | jne                 0x5b
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]
            //   51                   | push                ecx
            //   ff15????????         |                     

        $sequence_8 = { 6800700000 6a01 68???????? e8???????? 56 e8???????? }
            // n = 6, score = 200
            //   6800700000           | push                0x7000
            //   6a01                 | push                1
            //   68????????           |                     
            //   e8????????           |                     
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_9 = { ff15???????? 8d942410010000 6804010000 52 68???????? }
            // n = 5, score = 200
            //   ff15????????         |                     
            //   8d942410010000       | lea                 edx, [esp + 0x110]
            //   6804010000           | push                0x104
            //   52                   | push                edx
            //   68????????           |                     

    condition:
        7 of them and filesize < 147456
}
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