SYMBOLCOMMON_NAMEaka. SYNONYMS
win.sedll (Back to overview)

SeDll

Actor(s): Leviathan


There is no description at this point.

References
2020SecureworksSecureWorks
@online{secureworks:2020:bronze:e8ad4fb, author = {SecureWorks}, title = {{BRONZE MOHAWK}}, date = {2020}, organization = {Secureworks}, url = {https://www.secureworks.com/research/threat-profiles/bronze-mohawk}, language = {English}, urldate = {2020-05-23} } BRONZE MOHAWK
AIRBREAK scanbox BLACKCOFFEE CHINACHOPPER Cobalt Strike Derusbi homefry murkytop SeDll Leviathan
2018-11-13Recorded FutureInsikt Group
@online{group:20181113:chinese:6141b55, author = {Insikt Group}, title = {{Chinese Threat Actor TEMP.Periscope Targets UK-Based Engineering Company Using Russian APT Techniques}}, date = {2018-11-13}, organization = {Recorded Future}, url = {https://www.recordedfuture.com/chinese-threat-actor-tempperiscope/}, language = {English}, urldate = {2020-01-13} } Chinese Threat Actor TEMP.Periscope Targets UK-Based Engineering Company Using Russian APT Techniques
SeDll Leviathan
2018-03-16FireEyeFireEye
@online{fireeye:20180316:suspected:2a77316, author = {FireEye}, title = {{Suspected Chinese Cyber Espionage Group (TEMP.Periscope) Targeting U.S. Engineering and Maritime Industries}}, date = {2018-03-16}, organization = {FireEye}, url = {https://www.fireeye.com/blog/threat-research/2018/03/suspected-chinese-espionage-group-targeting-maritime-and-engineering-industries.html}, language = {English}, urldate = {2019-12-20} } Suspected Chinese Cyber Espionage Group (TEMP.Periscope) Targeting U.S. Engineering and Maritime Industries
badflick BLACKCOFFEE CHINACHOPPER homefry murkytop SeDll Leviathan
2017-10-16ProofpointAxel F, Pierre T
@online{f:20171016:leviathan:a898346, author = {Axel F and Pierre T}, title = {{Leviathan: Espionage actor spearphishes maritime and defense targets}}, date = {2017-10-16}, organization = {Proofpoint}, url = {https://www.proofpoint.com/us/threat-insight/post/leviathan-espionage-actor-spearphishes-maritime-and-defense-targets}, language = {English}, urldate = {2019-12-20} } Leviathan: Espionage actor spearphishes maritime and defense targets
NanHaiShu SeDll Leviathan
Yara Rules
[TLP:WHITE] win_sedll_auto (20220516 | Detects win.sedll.)
rule win_sedll_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        version = "1"
        description = "Detects win.sedll."
        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.sedll"
        malpedia_rule_date = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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 = { 83c410 6a00 6a00 ff75f4 }
            // n = 4, score = 200
            //   83c410               | add                 esp, 0x10
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   ff75f4               | push                dword ptr [ebp - 0xc]

        $sequence_1 = { 75f9 2bca 8d75f0 8bd3 }
            // n = 4, score = 200
            //   75f9                 | jne                 0xfffffffb
            //   2bca                 | sub                 ecx, edx
            //   8d75f0               | lea                 esi, [ebp - 0x10]
            //   8bd3                 | mov                 edx, ebx

        $sequence_2 = { 8b45fc 8a440701 0fbec0 50 }
            // n = 4, score = 200
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   8a440701             | mov                 al, byte ptr [edi + eax + 1]
            //   0fbec0               | movsx               eax, al
            //   50                   | push                eax

        $sequence_3 = { 83c602 6685c9 75f5 8bff 668b06 }
            // n = 5, score = 200
            //   83c602               | add                 esi, 2
            //   6685c9               | test                cx, cx
            //   75f5                 | jne                 0xfffffff7
            //   8bff                 | mov                 edi, edi
            //   668b06               | mov                 ax, word ptr [esi]

        $sequence_4 = { 85c0 0f8488000000 6a01 6a00 8d45f8 }
            // n = 5, score = 200
            //   85c0                 | test                eax, eax
            //   0f8488000000         | je                  0x8e
            //   6a01                 | push                1
            //   6a00                 | push                0
            //   8d45f8               | lea                 eax, [ebp - 8]

        $sequence_5 = { 8806 46 3b7dec 0f8c36ffffff }
            // n = 4, score = 200
            //   8806                 | mov                 byte ptr [esi], al
            //   46                   | inc                 esi
            //   3b7dec               | cmp                 edi, dword ptr [ebp - 0x14]
            //   0f8c36ffffff         | jl                  0xffffff3c

        $sequence_6 = { 85c0 b801000000 0f44d8 8b442418 46 }
            // n = 5, score = 200
            //   85c0                 | test                eax, eax
            //   b801000000           | mov                 eax, 1
            //   0f44d8               | cmove               ebx, eax
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   46                   | inc                 esi

        $sequence_7 = { 85c0 b801000000 0f44d8 8b442418 46 3b742410 7cdb }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   b801000000           | mov                 eax, 1
            //   0f44d8               | cmove               ebx, eax
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   46                   | inc                 esi
            //   3b742410             | cmp                 esi, dword ptr [esp + 0x10]
            //   7cdb                 | jl                  0xffffffdd

        $sequence_8 = { 5d c20c00 8b4510 33d2 }
            // n = 4, score = 200
            //   5d                   | pop                 ebp
            //   c20c00               | ret                 0xc
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   33d2                 | xor                 edx, edx

        $sequence_9 = { 83c404 33db 8b450c 85c0 7402 8930 ff75fc }
            // n = 7, score = 200
            //   83c404               | add                 esp, 4
            //   33db                 | xor                 ebx, ebx
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   85c0                 | test                eax, eax
            //   7402                 | je                  4
            //   8930                 | mov                 dword ptr [eax], esi
            //   ff75fc               | push                dword ptr [ebp - 4]

    condition:
        7 of them and filesize < 65536
}
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