SYMBOLCOMMON_NAMEaka. SYNONYMS
elf.satori (Back to overview)

Satori


Satori is a variation of elf.mirai which was first detected around 2017-11-27 by 360 Netlab. It uses exploit to exhibit worm-like behaviour to spread over ports 37215 and 52869 (CVE-2014-8361).

References
2021-03-17Palo Alto Networks Unit 42Haozhe Zhang, Vaibhav Singhal, Zhibin Zhang, Jun Du
@online{zhang:20210317:satori:6a1b4ac, author = {Haozhe Zhang and Vaibhav Singhal and Zhibin Zhang and Jun Du}, title = {{Satori: Mirai Botnet Variant Targeting Vantage Velocity Field Unit RCE Vulnerability}}, date = {2021-03-17}, organization = {Palo Alto Networks Unit 42}, url = {https://unit42.paloaltonetworks.com/satori-mirai-botnet-variant-targeting-vantage-velocity-field-unit-rce-vulnerability/}, language = {English}, urldate = {2021-03-22} } Satori: Mirai Botnet Variant Targeting Vantage Velocity Field Unit RCE Vulnerability
Satori
2018-09-02KrebsOnSecurityBrian Krebs
@online{krebs:20180902:alleged:caf0cb2, author = {Brian Krebs}, title = {{Alleged ‘Satori’ IoT Botnet Operator Sought Media Spotlight, Got Indicted}}, date = {2018-09-02}, organization = {KrebsOnSecurity}, url = {https://krebsonsecurity.com/2018/09/alleged-satori-iot-botnet-operator-sought-media-spotlight-got-indicted/}, language = {English}, urldate = {2020-01-13} } Alleged ‘Satori’ IoT Botnet Operator Sought Media Spotlight, Got Indicted
Satori
2018-02-12RadwareRadware
@online{radware:20180212:new:a73a365, author = {Radware}, title = {{New Satori Botnet Variant Enslaves Thousands of Dasan WiFi Routers}}, date = {2018-02-12}, organization = {Radware}, url = {https://blog.radware.com/security/botnets/2018/02/new-satori-botnet-variant-enslaves-thousands-dasan-wifi-routers/}, language = {English}, urldate = {2020-01-10} } New Satori Botnet Variant Enslaves Thousands of Dasan WiFi Routers
Satori
2018-01-18NetScoutPete Arzamendi, Matt Bing, Kirk Soluk
@online{arzamendi:20180118:arc:384a9b0, author = {Pete Arzamendi and Matt Bing and Kirk Soluk}, title = {{The ARC of Satori}}, date = {2018-01-18}, organization = {NetScout}, url = {https://www.arbornetworks.com/blog/asert/the-arc-of-satori/}, language = {English}, urldate = {2019-11-29} } The ARC of Satori
Satori
2018-01-17360 netlabRootKiter
@online{rootkiter:20180117:art:cc593ae, author = {RootKiter}, title = {{Art of Steal: Satori Variant is Robbing ETH BitCoin by Replacing Wallet Address}}, date = {2018-01-17}, organization = {360 netlab}, url = {http://blog.netlab.360.com/art-of-steal-satori-variant-is-robbing-eth-bitcoin-by-replacing-wallet-address-en/}, language = {English}, urldate = {2019-09-22} } Art of Steal: Satori Variant is Robbing ETH BitCoin by Replacing Wallet Address
Satori
2017-12-18eWeekRobert Lamos
@online{lamos:20171218:collaborative:1231f31, author = {Robert Lamos}, title = {{Collaborative Takedown Kills IoT Worm 'Satori'}}, date = {2017-12-18}, organization = {eWeek}, url = {http://www.eweek.com/security/collaborative-takedown-kills-iot-worm-satori}, language = {English}, urldate = {2019-12-20} } Collaborative Takedown Kills IoT Worm 'Satori'
Satori
2017-12-05360 netlab360 Netlab
@online{netlab:20171205:warning:fbac66a, author = {360 Netlab}, title = {{Warning: Satori, a Mirai Branch Is Spreading in Worm Style on Port 37215 and 52869}}, date = {2017-12-05}, organization = {360 netlab}, url = {http://blog.netlab.360.com/warning-satori-a-new-mirai-variant-is-spreading-in-worm-style-on-port-37215-and-52869-en/}, language = {English}, urldate = {2020-01-09} } Warning: Satori, a Mirai Branch Is Spreading in Worm Style on Port 37215 and 52869
Satori
Yara Rules
[TLP:WHITE] elf_satori_auto (20211008 | Detects elf.satori.)
rule elf_satori_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-10-07"
        version = "1"
        description = "Detects elf.satori."
        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/elf.satori"
        malpedia_rule_date = "20211007"
        malpedia_hash = "e5b790e0f888f252d49063a1251ca60ec2832535"
        malpedia_version = "20211008"
        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 = { 68???????? 6a07 e8???????? 83c40c 6a10 68???????? 6a08 }
            // n = 7, score = 100
            //   68????????           |                     
            //   6a07                 | push                7
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6a10                 | push                0x10
            //   68????????           |                     
            //   6a08                 | push                8

        $sequence_1 = { 74eb e9???????? 0fbe19 b800000080 41 }
            // n = 5, score = 100
            //   74eb                 | je                  0xffffffed
            //   e9????????           |                     
            //   0fbe19               | movsx               ebx, byte ptr [ecx]
            //   b800000080           | mov                 eax, 0x80000000
            //   41                   | inc                 ecx

        $sequence_2 = { 0f8ecf000000 8b54240c 833a0b 0f84c2000000 83f827 76b9 }
            // n = 6, score = 100
            //   0f8ecf000000         | jle                 0xd5
            //   8b54240c             | mov                 edx, dword ptr [esp + 0xc]
            //   833a0b               | cmp                 dword ptr [edx], 0xb
            //   0f84c2000000         | je                  0xc8
            //   83f827               | cmp                 eax, 0x27
            //   76b9                 | jbe                 0xffffffbb

        $sequence_3 = { 56 53 e8???????? 88442442 6a00 6a0c }
            // n = 6, score = 100
            //   56                   | push                esi
            //   53                   | push                ebx
            //   e8????????           |                     
            //   88442442             | mov                 byte ptr [esp + 0x42], al
            //   6a00                 | push                0
            //   6a0c                 | push                0xc

        $sequence_4 = { 53 83ec1c e8???????? 85c0 0f8ff7000000 40 0f84f0000000 }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   83ec1c               | sub                 esp, 0x1c
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f8ff7000000         | jg                  0xfd
            //   40                   | inc                 eax
            //   0f84f0000000         | je                  0xf6

        $sequence_5 = { 83c410 85c0 89c6 7e4a 8d3c03 eb41 8b4308 }
            // n = 7, score = 100
            //   83c410               | add                 esp, 0x10
            //   85c0                 | test                eax, eax
            //   89c6                 | mov                 esi, eax
            //   7e4a                 | jle                 0x4c
            //   8d3c03               | lea                 edi, dword ptr [ebx + eax]
            //   eb41                 | jmp                 0x43
            //   8b4308               | mov                 eax, dword ptr [ebx + 8]

        $sequence_6 = { c3 56 31f6 53 bb???????? 83ec04 0fb605???????? }
            // n = 7, score = 100
            //   c3                   | ret                 
            //   56                   | push                esi
            //   31f6                 | xor                 esi, esi
            //   53                   | push                ebx
            //   bb????????           |                     
            //   83ec04               | sub                 esp, 4
            //   0fb605????????       |                     

        $sequence_7 = { a3???????? 0f8ffa130000 40 0f84f3130000 e8???????? e8???????? }
            // n = 6, score = 100
            //   a3????????           |                     
            //   0f8ffa130000         | jg                  0x1400
            //   40                   | inc                 eax
            //   0f84f3130000         | je                  0x13f9
            //   e8????????           |                     
            //   e8????????           |                     

        $sequence_8 = { 6a04 56 53 e8???????? 8844243a 83c420 6a00 }
            // n = 7, score = 100
            //   6a04                 | push                4
            //   56                   | push                esi
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8844243a             | mov                 byte ptr [esp + 0x3a], al
            //   83c420               | add                 esp, 0x20
            //   6a00                 | push                0

        $sequence_9 = { e8???????? 83c40c 6a15 68???????? 6a1e e8???????? 83c40c }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6a15                 | push                0x15
            //   68????????           |                     
            //   6a1e                 | push                0x1e
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

    condition:
        7 of them and filesize < 118528
}
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