SYMBOLCOMMON_NAMEaka. SYNONYMS
win.slickshoes (Back to overview)

SLICKSHOES

Actor(s): Lazarus Group


There is no description at this point.

References
2020-02-25SentinelOneJim Walter
@online{walter:20200225:dprk:735f095, author = {Jim Walter}, title = {{DPRK Hidden Cobra Update: North Korean Malicious Cyber Activity}}, date = {2020-02-25}, organization = {SentinelOne}, url = {https://labs.sentinelone.com/dprk-hidden-cobra-update-north-korean-malicious-cyber-activity/}, language = {English}, urldate = {2020-02-27} } DPRK Hidden Cobra Update: North Korean Malicious Cyber Activity
ARTFULPIE BISTROMATH BUFFETLINE CHEESETRAY HOPLIGHT HOTCROISSANT SLICKSHOES
2020-02-14US-CERTUS-CERT
@online{uscert:20200214:malware:e48897a, author = {US-CERT}, title = {{Malware Analysis Report (AR20–045B): MAR-10265965-2.v1 - North Korean Trojan: SLICKSHOES}}, date = {2020-02-14}, organization = {US-CERT}, url = {https://www.us-cert.gov/ncas/analysis-reports/ar20-045b}, language = {English}, urldate = {2020-02-27} } Malware Analysis Report (AR20–045B): MAR-10265965-2.v1 - North Korean Trojan: SLICKSHOES
SLICKSHOES
Yara Rules
[TLP:WHITE] win_slickshoes_auto (20220411 | Detects win.slickshoes.)
rule win_slickshoes_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.slickshoes."
        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.slickshoes"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { e9???????? 5f 81e71f000000 be00000000 89e8 81c240000000 09de }
            // n = 7, score = 100
            //   e9????????           |                     
            //   5f                   | pop                 edi
            //   81e71f000000         | and                 edi, 0x1f
            //   be00000000           | mov                 esi, 0
            //   89e8                 | mov                 eax, ebp
            //   81c240000000         | add                 edx, 0x40
            //   09de                 | or                  esi, ebx

        $sequence_1 = { ff3424 5a 83c404 55 e9???????? 81c3007e1d7e 5a }
            // n = 7, score = 100
            //   ff3424               | push                dword ptr [esp]
            //   5a                   | pop                 edx
            //   83c404               | add                 esp, 4
            //   55                   | push                ebp
            //   e9????????           |                     
            //   81c3007e1d7e         | add                 ebx, 0x7e1d7e00
            //   5a                   | pop                 edx

        $sequence_2 = { e9???????? 52 56 53 bb426aaf77 e9???????? 4a }
            // n = 7, score = 100
            //   e9????????           |                     
            //   52                   | push                edx
            //   56                   | push                esi
            //   53                   | push                ebx
            //   bb426aaf77           | mov                 ebx, 0x77af6a42
            //   e9????????           |                     
            //   4a                   | dec                 edx

        $sequence_3 = { f7d3 31d8 31c3 31d8 68c326cd5d 893424 beaaa85b7d }
            // n = 7, score = 100
            //   f7d3                 | not                 ebx
            //   31d8                 | xor                 eax, ebx
            //   31c3                 | xor                 ebx, eax
            //   31d8                 | xor                 eax, ebx
            //   68c326cd5d           | push                0x5dcd26c3
            //   893424               | mov                 dword ptr [esp], esi
            //   beaaa85b7d           | mov                 esi, 0x7d5ba8aa

        $sequence_4 = { 89f6 29c0 01cb 09fe 81ee80000000 8b3b 89ee }
            // n = 7, score = 100
            //   89f6                 | mov                 esi, esi
            //   29c0                 | sub                 eax, eax
            //   01cb                 | add                 ebx, ecx
            //   09fe                 | or                  esi, edi
            //   81ee80000000         | sub                 esi, 0x80
            //   8b3b                 | mov                 edi, dword ptr [ebx]
            //   89ee                 | mov                 esi, ebp

        $sequence_5 = { e9???????? 313424 333424 8b2424 e9???????? 55 e9???????? }
            // n = 7, score = 100
            //   e9????????           |                     
            //   313424               | xor                 dword ptr [esp], esi
            //   333424               | xor                 esi, dword ptr [esp]
            //   8b2424               | mov                 esp, dword ptr [esp]
            //   e9????????           |                     
            //   55                   | push                ebp
            //   e9????????           |                     

        $sequence_6 = { e9???????? 89542404 e9???????? 57 bf9bdb5f56 81f7299ac419 09fa }
            // n = 7, score = 100
            //   e9????????           |                     
            //   89542404             | mov                 dword ptr [esp + 4], edx
            //   e9????????           |                     
            //   57                   | push                edi
            //   bf9bdb5f56           | mov                 edi, 0x565fdb9b
            //   81f7299ac419         | xor                 edi, 0x19c49a29
            //   09fa                 | or                  edx, edi

        $sequence_7 = { fb 81f300000080 0500000000 21db 09c7 81e9ffffff7f 668b10 }
            // n = 7, score = 100
            //   fb                   | sti                 
            //   81f300000080         | xor                 ebx, 0x80000000
            //   0500000000           | add                 eax, 0
            //   21db                 | and                 ebx, ebx
            //   09c7                 | or                  edi, eax
            //   81e9ffffff7f         | sub                 ecx, 0x7fffffff
            //   668b10               | mov                 dx, word ptr [eax]

        $sequence_8 = { ff3424 8b1c24 81c404000000 52 e9???????? 81ea2115465f 81ea47d5ee7d }
            // n = 7, score = 100
            //   ff3424               | push                dword ptr [esp]
            //   8b1c24               | mov                 ebx, dword ptr [esp]
            //   81c404000000         | add                 esp, 4
            //   52                   | push                edx
            //   e9????????           |                     
            //   81ea2115465f         | sub                 edx, 0x5f461521
            //   81ea47d5ee7d         | sub                 edx, 0x7deed547

        $sequence_9 = { e9???????? 83c404 50 b804000000 01c3 58 53 }
            // n = 7, score = 100
            //   e9????????           |                     
            //   83c404               | add                 esp, 4
            //   50                   | push                eax
            //   b804000000           | mov                 eax, 4
            //   01c3                 | add                 ebx, eax
            //   58                   | pop                 eax
            //   53                   | push                ebx

    condition:
        7 of them and filesize < 11198464
}
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