SYMBOLCOMMON_NAMEaka. SYNONYMS
win.emdivi (Back to overview)

Emdivi

Actor(s): Stone Panda


There is no description at this point.

References
2019-11-11Virus BulletinShusei Tomonaga, Tomoaki Tani, Hiroshi Soeda, Wataru Takahashi
@online{tomonaga:20191111:cases:ac5f1b3, author = {Shusei Tomonaga and Tomoaki Tani and Hiroshi Soeda and Wataru Takahashi}, title = {{APT cases exploiting vulnerabilities in region‑specific software}}, date = {2019-11-11}, organization = {Virus Bulletin}, url = {https://www.virusbulletin.com/virusbulletin/2020/05/vb2019-paper-apt-cases-exploiting-vulnerabilities-regionspecific-software/}, language = {English}, urldate = {2020-05-13} } APT cases exploiting vulnerabilities in region‑specific software
NodeRAT Emdivi PlugX
2017-07-27Trend MicroBenson Sy, CH Lei, Kawabata Kohei
@online{sy:20170727:chessmaster:7d3e4b3, author = {Benson Sy and CH Lei and Kawabata Kohei}, title = {{ChessMaster Makes its Move: A Look into the Campaign’s Cyberespionage Arsenal}}, date = {2017-07-27}, organization = {Trend Micro}, url = {http://blog.trendmicro.com/trendlabs-security-intelligence/chessmaster-cyber-espionage-campaign/}, language = {English}, urldate = {2020-01-13} } ChessMaster Makes its Move: A Look into the Campaign’s Cyberespionage Arsenal
Emdivi
2016-06-13Macnica NetworksMacnica Networks
@techreport{networks:20160613:survey:c78b147, author = {Macnica Networks}, title = {{Survey of the actual situation of the large-scale cyber spy activity that hit Japan | 1st edition}}, date = {2016-06-13}, institution = {Macnica Networks}, url = {https://www.macnica.net/file/security_report_20160613.pdf}, language = {Japanese}, urldate = {2021-03-02} } Survey of the actual situation of the large-scale cyber spy activity that hit Japan | 1st edition
Emdivi PlugX
2015-11-19JPCERT/CCYou Nakatsuru
@online{nakatsuru:20151119:decrypting:8be1808, author = {You Nakatsuru}, title = {{Decrypting Strings in Emdivi}}, date = {2015-11-19}, organization = {JPCERT/CC}, url = {http://blog.jpcert.or.jp/2015/11/decrypting-strings-in-emdivi.html}, language = {English}, urldate = {2019-11-28} } Decrypting Strings in Emdivi
Emdivi
2015-09-01Trend MicroBenson Sy
@online{sy:20150901:attackers:3703ecf, author = {Benson Sy}, title = {{Attackers Target Organizations in Japan; Transform Local Sites into C&C Servers for EMDIVI Backdoor}}, date = {2015-09-01}, organization = {Trend Micro}, url = {http://blog.trendmicro.com/trendlabs-security-intelligence/attackers-target-organizations-in-japan-transform-local-sites-into-cc-servers-for-emdivi-backdoor/}, language = {English}, urldate = {2019-12-17} } Attackers Target Organizations in Japan; Transform Local Sites into C&C Servers for EMDIVI Backdoor
Emdivi
2015-08-20Kaspersky LabsSuguru Ishimaru
@online{ishimaru:20150820:new:d553aa4, author = {Suguru Ishimaru}, title = {{New activity of the Blue Termite APT}}, date = {2015-08-20}, organization = {Kaspersky Labs}, url = {https://securelist.com/new-activity-of-the-blue-termite-apt/71876/}, language = {English}, urldate = {2019-12-20} } New activity of the Blue Termite APT
Emdivi
Yara Rules
[TLP:WHITE] win_emdivi_auto (20210616 | Detects win.emdivi.)
rule win_emdivi_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        version = "1"
        description = "Detects win.emdivi."
        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.emdivi"
        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 = { 41 41 3bce 72db 889c15b3fdffff }
            // n = 5, score = 300
            //   41                   | inc                 ecx
            //   41                   | inc                 ecx
            //   3bce                 | cmp                 ecx, esi
            //   72db                 | jb                  0xffffffdd
            //   889c15b3fdffff       | mov                 byte ptr [ebp + edx - 0x24d], bl

        $sequence_1 = { 3bf3 7405 395d0c 771b e8???????? 6a16 }
            // n = 6, score = 300
            //   3bf3                 | cmp                 esi, ebx
            //   7405                 | je                  7
            //   395d0c               | cmp                 dword ptr [ebp + 0xc], ebx
            //   771b                 | ja                  0x1d
            //   e8????????           |                     
            //   6a16                 | push                0x16

        $sequence_2 = { ff45fc e8???????? 3945fc 0f8e75ffffff e9???????? 8b45fc }
            // n = 6, score = 300
            //   ff45fc               | inc                 dword ptr [ebp - 4]
            //   e8????????           |                     
            //   3945fc               | cmp                 dword ptr [ebp - 4], eax
            //   0f8e75ffffff         | jle                 0xffffff7b
            //   e9????????           |                     
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]

        $sequence_3 = { 7404 8bf3 eb17 f6c307 740f 8d73ff }
            // n = 6, score = 300
            //   7404                 | je                  6
            //   8bf3                 | mov                 esi, ebx
            //   eb17                 | jmp                 0x19
            //   f6c307               | test                bl, 7
            //   740f                 | je                  0x11
            //   8d73ff               | lea                 esi, dword ptr [ebx - 1]

        $sequence_4 = { 8bfe 3375fc c1ef03 33fb }
            // n = 4, score = 300
            //   8bfe                 | mov                 edi, esi
            //   3375fc               | xor                 esi, dword ptr [ebp - 4]
            //   c1ef03               | shr                 edi, 3
            //   33fb                 | xor                 edi, ebx

        $sequence_5 = { 8d7e44 6a08 5a 8bc7 8d4df4 }
            // n = 5, score = 300
            //   8d7e44               | lea                 edi, dword ptr [esi + 0x44]
            //   6a08                 | push                8
            //   5a                   | pop                 edx
            //   8bc7                 | mov                 eax, edi
            //   8d4df4               | lea                 ecx, dword ptr [ebp - 0xc]

        $sequence_6 = { 55 8bec 53 56 6a03 5b }
            // n = 6, score = 300
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   53                   | push                ebx
            //   56                   | push                esi
            //   6a03                 | push                3
            //   5b                   | pop                 ebx

        $sequence_7 = { 8bd8 3bde 7f04 33c0 eb46 8d4301 50 }
            // n = 7, score = 300
            //   8bd8                 | mov                 ebx, eax
            //   3bde                 | cmp                 ebx, esi
            //   7f04                 | jg                  6
            //   33c0                 | xor                 eax, eax
            //   eb46                 | jmp                 0x48
            //   8d4301               | lea                 eax, dword ptr [ebx + 1]
            //   50                   | push                eax

        $sequence_8 = { be00020000 56 8d85ecfaffff 53 50 e8???????? }
            // n = 6, score = 300
            //   be00020000           | mov                 esi, 0x200
            //   56                   | push                esi
            //   8d85ecfaffff         | lea                 eax, dword ptr [ebp - 0x514]
            //   53                   | push                ebx
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_9 = { c1ef05 c1e602 33f7 8bf8 3345fc c1ef03 }
            // n = 6, score = 300
            //   c1ef05               | shr                 edi, 5
            //   c1e602               | shl                 esi, 2
            //   33f7                 | xor                 esi, edi
            //   8bf8                 | mov                 edi, eax
            //   3345fc               | xor                 eax, dword ptr [ebp - 4]
            //   c1ef03               | shr                 edi, 3

    condition:
        7 of them and filesize < 581632
}
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