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 (20201014 | autogenerated rule brought to you by yara-signator)
rule win_sedll_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sedll"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 50 8d45c4 c745c843005200 0f57c0 }
            // n = 4, score = 100
            //   50                   | push                eax
            //   8d45c4               | lea                 eax, [ebp - 0x3c]
            //   c745c843005200       | mov                 dword ptr [ebp - 0x38], 0x520043
            //   0f57c0               | xorps               xmm0, xmm0

        $sequence_1 = { 0fbed8 8b45fc 8a440701 0fbec0 50 51 ff15???????? }
            // n = 7, score = 100
            //   0fbed8               | movsx               ebx, al
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   8a440701             | mov                 al, byte ptr [edi + eax + 1]
            //   0fbec0               | movsx               eax, al
            //   50                   | push                eax
            //   51                   | push                ecx
            //   ff15????????         |                     

        $sequence_2 = { 56 895df4 ff15???????? 83f8ff 7508 5e }
            // n = 6, score = 100
            //   56                   | push                esi
            //   895df4               | mov                 dword ptr [ebp - 0xc], ebx
            //   ff15????????         |                     
            //   83f8ff               | cmp                 eax, -1
            //   7508                 | jne                 0xa
            //   5e                   | pop                 esi

        $sequence_3 = { 8b5d18 56 57 8b3d???????? 6a00 6a00 }
            // n = 6, score = 100
            //   8b5d18               | mov                 ebx, dword ptr [ebp + 0x18]
            //   56                   | push                esi
            //   57                   | push                edi
            //   8b3d????????         |                     
            //   6a00                 | push                0
            //   6a00                 | push                0

        $sequence_4 = { 50 8b08 ff5120 8b45f8 6a00 }
            // n = 5, score = 100
            //   50                   | push                eax
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   ff5120               | call                dword ptr [ecx + 0x20]
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   6a00                 | push                0

        $sequence_5 = { 2bca 8d75f0 8bd3 83e904 7211 8b02 3b06 }
            // n = 7, score = 100
            //   2bca                 | sub                 ecx, edx
            //   8d75f0               | lea                 esi, [ebp - 0x10]
            //   8bd3                 | mov                 edx, ebx
            //   83e904               | sub                 ecx, 4
            //   7211                 | jb                  0x13
            //   8b02                 | mov                 eax, dword ptr [edx]
            //   3b06                 | cmp                 eax, dword ptr [esi]

        $sequence_6 = { 6a00 56 e8???????? 83c40c 33ff 85db }
            // n = 6, score = 100
            //   6a00                 | push                0
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   33ff                 | xor                 edi, edi
            //   85db                 | test                ebx, ebx

        $sequence_7 = { 753d 83c104 83c204 83ee04 73ef 8b4d08 }
            // n = 6, score = 100
            //   753d                 | jne                 0x3f
            //   83c104               | add                 ecx, 4
            //   83c204               | add                 edx, 4
            //   83ee04               | sub                 esi, 4
            //   73ef                 | jae                 0xfffffff1
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]

        $sequence_8 = { ffd7 8bf0 56 ff15???????? 83c404 6a00 }
            // n = 6, score = 100
            //   ffd7                 | call                edi
            //   8bf0                 | mov                 esi, eax
            //   56                   | push                esi
            //   ff15????????         |                     
            //   83c404               | add                 esp, 4
            //   6a00                 | push                0

        $sequence_9 = { 68???????? 6a17 6a00 8d45e4 50 }
            // n = 5, score = 100
            //   68????????           |                     
            //   6a17                 | push                0x17
            //   6a00                 | push                0
            //   8d45e4               | lea                 eax, [ebp - 0x1c]
            //   50                   | push                eax

    condition:
        7 of them and filesize < 65536
}
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