SYMBOLCOMMON_NAMEaka. SYNONYMS
win.plead (Back to overview)

PLEAD

aka: DRAWDOWN, GOODTIMES, Linopid

Actor(s): BlackTech


PLEAD is a RAT used by the actor BlackTech. FireEye uses the synonyms GOODTIMES for the RAT module and DRAWDOWN for the respective downloader.

References
2020-01-14TEAMT5CiYi Yu, Aragorn Tseng
@techreport{yu:20200114:evil:20b2d83, author = {CiYi Yu and Aragorn Tseng}, title = {{Evil Hidden in Shellcode: The Evolution of Malware DBGPRINT}}, date = {2020-01-14}, institution = {TEAMT5}, url = {https://jsac.jpcert.or.jp/archive/2020/pdf/JSAC2020_2_ycy-aragorn_en.pdf}, language = {English}, urldate = {2020-04-13} } Evil Hidden in Shellcode: The Evolution of Malware DBGPRINT
PLEAD
2019-12-12FireEyeChi-en Shen, Oleg Bondarenko
@online{shen:20191212:cyber:e01baca, author = {Chi-en Shen and Oleg Bondarenko}, title = {{Cyber Threat Landscape in Japan – Revealing Threat in the Shadow}}, date = {2019-12-12}, organization = {FireEye}, url = {https://www.slideshare.net/codeblue_jp/cb19-cyber-threat-landscape-in-japan-revealing-threat-in-the-shadow-by-chi-en-shen-ashley-oleg-bondarenko}, language = {English}, urldate = {2020-04-16} } Cyber Threat Landscape in Japan – Revealing Threat in the Shadow
Cerberus TSCookie Cobalt Strike Dtrack Emotet Formbook IcedID Icefog IRONHALO Loki Password Stealer (PWS) PandaBanker PLEAD poisonplug TrickBot BlackTech
2019-11-22SANS Cyber Security SummitSveva Vittoria Scenarelli, Rachel Mullan
@techreport{scenarelli:20191122:need:00f7cef, author = {Sveva Vittoria Scenarelli and Rachel Mullan}, title = {{Need for PLEAD: BlackTech Pursuit}}, date = {2019-11-22}, institution = {SANS Cyber Security Summit}, url = {https://www.sans.org/cyber-security-summit/archives/file/summit-archive-1574947724.pdf}, language = {English}, urldate = {2020-01-20} } Need for PLEAD: BlackTech Pursuit
BLUETHER PLEAD
2019-09-18JPCERT/CCShusei Tomonaga
@online{tomonaga:20190918:malware:67390e7, author = {Shusei Tomonaga}, title = {{Malware Used by BlackTech after Network Intrusion}}, date = {2019-09-18}, organization = {JPCERT/CC}, url = {https://blogs.jpcert.or.jp/en/2019/09/tscookie-loader.html}, language = {English}, urldate = {2019-11-16} } Malware Used by BlackTech after Network Intrusion
PLEAD
2019-08-01Kaspersky LabsGReAT
@online{great:20190801:trends:5e25d5b, author = {GReAT}, title = {{APT trends report Q2 2019}}, date = {2019-08-01}, organization = {Kaspersky Labs}, url = {https://securelist.com/apt-trends-report-q2-2019/91897/}, language = {English}, urldate = {2020-08-13} } APT trends report Q2 2019
ZooPark magecart POWERSTATS Chaperone COMpfun EternalPetya FinFisher RAT HawkEye Keylogger HOPLIGHT Microcin NjRAT Olympic Destroyer PLEAD RokRAT Triton Zebrocy Microcin
2019-05-30JPCERT/CCShusei Tomonaga
@online{tomonaga:20190530:bug:cf70c8d, author = {Shusei Tomonaga}, title = {{Bug in Malware “TSCookie” - Fails to Read Configuration - (Update)}}, date = {2019-05-30}, organization = {JPCERT/CC}, url = {https://blogs.jpcert.or.jp/en/2019/05/tscookie3.html}, language = {English}, urldate = {2020-01-13} } Bug in Malware “TSCookie” - Fails to Read Configuration - (Update)
PLEAD
2019-05-14ESET ResearchAnton Cherepanov
@online{cherepanov:20190514:plead:3140588, author = {Anton Cherepanov}, title = {{Plead malware distributed via MitM attacks at router level, misusing ASUS WebStorage}}, date = {2019-05-14}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2019/05/14/plead-malware-mitm-asus-webstorage/}, language = {English}, urldate = {2019-11-14} } Plead malware distributed via MitM attacks at router level, misusing ASUS WebStorage
PLEAD BlackTech
2018-11-12JPCERT/CCShusei Tomonaga
@online{tomonaga:20181112:bug:fe13af3, author = {Shusei Tomonaga}, title = {{Bug in Malware “TSCookie” - Fails to Read Configuration}}, date = {2018-11-12}, organization = {JPCERT/CC}, url = {https://blogs.jpcert.or.jp/en/2018/11/tscookie2.html}, language = {English}, urldate = {2019-10-28} } Bug in Malware “TSCookie” - Fails to Read Configuration
PLEAD
2018-07-09ESET ResearchAnton Cherepanov
@online{cherepanov:20180709:certificates:ae214b6, author = {Anton Cherepanov}, title = {{Certificates stolen from Taiwanese tech‑companies misused in Plead malware campaign}}, date = {2018-07-09}, organization = {ESET Research}, url = {https://www.welivesecurity.com/2018/07/09/certificates-stolen-taiwanese-tech-companies-plead-malware-campaign/}, language = {English}, urldate = {2019-11-14} } Certificates stolen from Taiwanese tech‑companies misused in Plead malware campaign
PLEAD BlackTech
2018-06-08JPCERT/CCShusei Tomonaga
@online{tomonaga:20180608:plead:046d5bc, author = {Shusei Tomonaga}, title = {{PLEAD Downloader Used by BlackTech}}, date = {2018-06-08}, organization = {JPCERT/CC}, url = {https://blog.jpcert.or.jp/2018/06/plead-downloader-used-by-blacktech.html}, language = {English}, urldate = {2020-01-06} } PLEAD Downloader Used by BlackTech
PLEAD
2018-03-06Shusei Tomonaga
@online{tomonaga:20180306:malware:f5fea73, author = {Shusei Tomonaga}, title = {{Malware “TSCookie”}}, date = {2018-03-06}, url = {http://blog.jpcert.or.jp/2018/03/malware-tscooki-7aa0.html}, language = {English}, urldate = {2020-01-07} } Malware “TSCookie”
PLEAD
2018-01-10FreebufTencent Computer Manager
@online{manager:20180110:analysis:3a5fe83, author = {Tencent Computer Manager}, title = {{Analysis of BlackTech's latest APT attack}}, date = {2018-01-10}, organization = {Freebuf}, url = {http://www.freebuf.com/column/159865.html}, language = {English}, urldate = {2020-01-08} } Analysis of BlackTech's latest APT attack
PLEAD
2017-06-22Trend MicroLenart Bermejo, Razor Huang, CH Lei
@online{bermejo:20170622:following:7126b3b, author = {Lenart Bermejo and Razor Huang and CH Lei}, title = {{Following the Trail of BlackTech’s Cyber Espionage Campaigns}}, date = {2017-06-22}, organization = {Trend Micro}, url = {https://blog.trendmicro.com/trendlabs-security-intelligence/following-trail-blacktech-cyber-espionage-campaigns/}, language = {English}, urldate = {2019-12-24} } Following the Trail of BlackTech’s Cyber Espionage Campaigns
PLEAD BlackTech
2017-06Trend MicroLenart Bermejo, Razor Huang, CH Lei
@techreport{bermejo:201706:following:61e6dae, author = {Lenart Bermejo and Razor Huang and CH Lei}, title = {{Following the Trail of BlackTech’s Cyber Espionage Campaigns}}, date = {2017-06}, institution = {Trend Micro}, url = {https://documents.trendmicro.com/assets/appendix-following-the-trail-of-blacktechs-cyber-espionage-campaigns.pdf}, language = {English}, urldate = {2020-01-07} } Following the Trail of BlackTech’s Cyber Espionage Campaigns
PLEAD
2016-04-13FireEyeDaniel Regalado, Taha Karim, Varun Jian, Erye Hernandez
@online{regalado:20160413:ghosts:5d2944f, author = {Daniel Regalado and Taha Karim and Varun Jian and Erye Hernandez}, title = {{Ghosts in the Endpoint}}, date = {2016-04-13}, organization = {FireEye}, url = {https://www.fireeye.com/blog/threat-research/2016/04/ghosts_in_the_endpoi.html}, language = {English}, urldate = {2020-04-20} } Ghosts in the Endpoint
PLEAD
2014-07-02Trend MicroKervin Alintanahin, Ronnie Giagone
@online{alintanahin:20140702:kivars:4fe6877, author = {Kervin Alintanahin and Ronnie Giagone}, title = {{KIVARS With Venom: Targeted Attacks Upgrade with 64-bit “Support”}}, date = {2014-07-02}, organization = {Trend Micro}, url = {https://blog.trendmicro.com/trendlabs-security-intelligence/kivars-with-venom-targeted-attacks-upgrade-with-64-bit-support/}, language = {English}, urldate = {2020-06-19} } KIVARS With Venom: Targeted Attacks Upgrade with 64-bit “Support”
FakeWord KIVARS PLEAD Poison RAT Zeus
Yara Rules
[TLP:WHITE] win_plead_auto (20200529 | autogenerated rule brought to you by yara-signator)
rule win_plead_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.plead"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        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 / approach 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 = { 59 894510 0f878f000000 3bc3 0f8482000000 }
            // n = 5, score = 900
            //   59                   | pop                 ecx
            //   894510               | mov                 dword ptr [ebp + 0x10], eax
            //   0f878f000000         | ja                  0x95
            //   3bc3                 | cmp                 eax, ebx
            //   0f8482000000         | je                  0x88

        $sequence_1 = { 56 e8???????? 40 50 6a01 ff15???????? 83c40c }
            // n = 7, score = 900
            //   56                   | push                esi
            //   e8????????           |                     
            //   40                   | inc                 eax
            //   50                   | push                eax
            //   6a01                 | push                1
            //   ff15????????         |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_2 = { 3bf7 740f ebda 33f6 c745fcf8ffffff }
            // n = 5, score = 900
            //   3bf7                 | cmp                 esi, edi
            //   740f                 | je                  0x11
            //   ebda                 | jmp                 0xffffffdc
            //   33f6                 | xor                 esi, esi
            //   c745fcf8ffffff       | mov                 dword ptr [ebp - 4], 0xfffffff8

        $sequence_3 = { 53 51 ffd0 8bf8 57 ff15???????? }
            // n = 6, score = 900
            //   53                   | push                ebx
            //   51                   | push                ecx
            //   ffd0                 | call                eax
            //   8bf8                 | mov                 edi, eax
            //   57                   | push                edi
            //   ff15????????         |                     

        $sequence_4 = { 0faf45fc 8907 83c704 ff4d0c }
            // n = 4, score = 900
            //   0faf45fc             | imul                eax, dword ptr [ebp - 4]
            //   8907                 | mov                 dword ptr [edi], eax
            //   83c704               | add                 edi, 4
            //   ff4d0c               | dec                 dword ptr [ebp + 0xc]

        $sequence_5 = { 8b4514 56 881c30 ff15???????? 3bc3 59 }
            // n = 6, score = 900
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   56                   | push                esi
            //   881c30               | mov                 byte ptr [eax + esi], bl
            //   ff15????????         |                     
            //   3bc3                 | cmp                 eax, ebx
            //   59                   | pop                 ecx

        $sequence_6 = { 85c0 750f 56 ff15???????? 6afe 58 e9???????? }
            // n = 7, score = 900
            //   85c0                 | test                eax, eax
            //   750f                 | jne                 0x11
            //   56                   | push                esi
            //   ff15????????         |                     
            //   6afe                 | push                -2
            //   58                   | pop                 eax
            //   e9????????           |                     

        $sequence_7 = { 897518 bf00800000 57 53 56 }
            // n = 5, score = 900
            //   897518               | mov                 dword ptr [ebp + 0x18], esi
            //   bf00800000           | mov                 edi, 0x8000
            //   57                   | push                edi
            //   53                   | push                ebx
            //   56                   | push                esi

        $sequence_8 = { 8975fc 75ec 8bc6 5e 8be5 }
            // n = 5, score = 600
            //   8975fc               | mov                 dword ptr [ebp - 4], esi
            //   75ec                 | jne                 0xffffffee
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi
            //   8be5                 | mov                 esp, ebp

        $sequence_9 = { 81c418020000 c21000 8b8c241c020000 68???????? }
            // n = 4, score = 600
            //   81c418020000         | add                 esp, 0x218
            //   c21000               | ret                 0x10
            //   8b8c241c020000       | mov                 ecx, dword ptr [esp + 0x21c]
            //   68????????           |                     

        $sequence_10 = { 8b8c241c020000 68???????? 51 ff15???????? 33c0 81c418020000 c21000 }
            // n = 7, score = 600
            //   8b8c241c020000       | mov                 ecx, dword ptr [esp + 0x21c]
            //   68????????           |                     
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   81c418020000         | add                 esp, 0x218
            //   c21000               | ret                 0x10

        $sequence_11 = { 8b8c242c020000 51 ff15???????? 8d54240c 52 ff15???????? 8d842420010000 }
            // n = 7, score = 600
            //   8b8c242c020000       | mov                 ecx, dword ptr [esp + 0x22c]
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8d54240c             | lea                 edx, [esp + 0xc]
            //   52                   | push                edx
            //   ff15????????         |                     
            //   8d842420010000       | lea                 eax, [esp + 0x120]

        $sequence_12 = { 52 53 50 8b1d???????? ffd3 85c0 743b }
            // n = 7, score = 600
            //   52                   | push                edx
            //   53                   | push                ebx
            //   50                   | push                eax
            //   8b1d????????         |                     
            //   ffd3                 | call                ebx
            //   85c0                 | test                eax, eax
            //   743b                 | je                  0x3d

        $sequence_13 = { 6a00 6a00 50 c705????????00000000 ff15???????? 33c0 81c418020000 }
            // n = 7, score = 600
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   50                   | push                eax
            //   c705????????00000000     |     
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   81c418020000         | add                 esp, 0x218

        $sequence_14 = { 7e1c 55 8bc7 33d2 }
            // n = 4, score = 600
            //   7e1c                 | jle                 0x1e
            //   55                   | push                ebp
            //   8bc7                 | mov                 eax, edi
            //   33d2                 | xor                 edx, edx

        $sequence_15 = { 8b4c2408 81ec18020000 8d41d0 3de0000000 }
            // n = 4, score = 600
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]
            //   81ec18020000         | sub                 esp, 0x218
            //   8d41d0               | lea                 eax, [ecx - 0x30]
            //   3de0000000           | cmp                 eax, 0xe0

        $sequence_16 = { 648b1530000000 8b520c 8b521c 8b5a08 }
            // n = 4, score = 200
            //   648b1530000000       | mov                 edx, dword ptr fs:[0x30]
            //   8b520c               | mov                 edx, dword ptr [edx + 0xc]
            //   8b521c               | mov                 edx, dword ptr [edx + 0x1c]
            //   8b5a08               | mov                 ebx, dword ptr [edx + 8]

        $sequence_17 = { 8b733c 8b741e78 03f3 56 8b7620 03f3 }
            // n = 6, score = 200
            //   8b733c               | mov                 esi, dword ptr [ebx + 0x3c]
            //   8b741e78             | mov                 esi, dword ptr [esi + ebx + 0x78]
            //   03f3                 | add                 esi, ebx
            //   56                   | push                esi
            //   8b7620               | mov                 esi, dword ptr [esi + 0x20]
            //   03f3                 | add                 esi, ebx

        $sequence_18 = { 8945f4 e8???????? 85c0 0f849f020000 8945f0 6a0c 8d4de0 }
            // n = 7, score = 100
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f849f020000         | je                  0x2a5
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   6a0c                 | push                0xc
            //   8d4de0               | lea                 ecx, [ebp - 0x20]

        $sequence_19 = { 394510 747e 394514 7679 8b4d0c }
            // n = 5, score = 100
            //   394510               | cmp                 dword ptr [ebp + 0x10], eax
            //   747e                 | je                  0x80
            //   394514               | cmp                 dword ptr [ebp + 0x14], eax
            //   7679                 | jbe                 0x7b
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]

        $sequence_20 = { 895704 3bda 0f8568ffffff e8???????? 8b7df0 e9???????? }
            // n = 6, score = 100
            //   895704               | mov                 dword ptr [edi + 4], edx
            //   3bda                 | cmp                 ebx, edx
            //   0f8568ffffff         | jne                 0xffffff6e
            //   e8????????           |                     
            //   8b7df0               | mov                 edi, dword ptr [ebp - 0x10]
            //   e9????????           |                     

        $sequence_21 = { ff5648 eb0d ff75f8 e8???????? 8b45f8 eb02 }
            // n = 6, score = 100
            //   ff5648               | call                dword ptr [esi + 0x48]
            //   eb0d                 | jmp                 0xf
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   eb02                 | jmp                 4

        $sequence_22 = { 85c0 741d ff7304 50 ff750c }
            // n = 5, score = 100
            //   85c0                 | test                eax, eax
            //   741d                 | je                  0x1f
            //   ff7304               | push                dword ptr [ebx + 4]
            //   50                   | push                eax
            //   ff750c               | push                dword ptr [ebp + 0xc]

        $sequence_23 = { 03c2 46 e2f5 5a 5e }
            // n = 5, score = 100
            //   03c2                 | add                 eax, edx
            //   46                   | inc                 esi
            //   e2f5                 | loop                0xfffffff7
            //   5a                   | pop                 edx
            //   5e                   | pop                 esi

    condition:
        7 of them and filesize < 8224768
}
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