Joe Sandbox Cloud Basic Analysis Report
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Linux Analysis Report
arm6.elf

Overview

General Information

Sample name:arm6.elf
Analysis ID:1628578
MD5:a20f0723e720ea004593740e0189233e
SHA1:7ebe17a407cef37b18d63e209462a95fd567b46e
SHA256:1fd9c8d2b65dbb30ac63cdc09482b66eba044b0d5836fed272101c6d98f4b27b
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Executes the "rm" command used to delete files or directories
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious

General Information

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1628578
Start date and time:2025-03-03 23:07:32 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 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:arm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@2/0

Runtime Messages

Command:/tmp/arm6.elf
PID:5423
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
  • arm6.elf (PID: 5423, Parent: 5348, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm6.elf
  • dash New Fork (PID: 5496, Parent: 3579)
  • rm (PID: 5496, Parent: 3579, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.UZelZSRIwB /tmp/tmp.Ew8UpaotHY /tmp/tmp.t9weC2qvTw
  • dash New Fork (PID: 5497, Parent: 3579)
  • rm (PID: 5497, Parent: 3579, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.UZelZSRIwB /tmp/tmp.Ew8UpaotHY /tmp/tmp.t9weC2qvTw
  • cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

  • • AV Detection
  • • Networking
  • • System Summary
  • • Persistence and Installation Behavior
  • • Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: arm6.elfVirustotal: Detection: 39%Perma Link
Source: arm6.elfReversingLabs: Detection: 42%
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: unknownNetwork traffic detected: HTTP traffic on port 443 -> 37676
Source: unknownNetwork traffic detected: HTTP traffic on port 37676 -> 443
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal48.linELF@0/0@2/0
Source: /usr/bin/dash (PID: 5496)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.UZelZSRIwB /tmp/tmp.Ew8UpaotHY /tmp/tmp.t9weC2qvTwJump to behavior
Source: /usr/bin/dash (PID: 5497)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.UZelZSRIwB /tmp/tmp.Ew8UpaotHY /tmp/tmp.t9weC2qvTwJump to behavior
Source: /tmp/arm6.elf (PID: 5423)Queries kernel information via 'uname': Jump to behavior
Source: arm6.elf, 5423.1.0000560ae4875000.0000560ae49a3000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: arm6.elf, 5423.1.0000560ae4875000.0000560ae49a3000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/arm
Source: arm6.elf, 5423.1.00007fff72e64000.00007fff72e85000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: arm6.elf, 5423.1.00007fff72e64000.00007fff72e85000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm6.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/arm6.elf
Source: arm6.elf, 5423.1.00007fff72e64000.00007fff72e85000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Mitre Att&ck Matrix

ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
File Deletion		OS 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

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: 1628578 Sample: arm6.elf Startdate: 03/03/2025 Architecture: LINUX Score: 48 12 54.217.10.153, 37676, 443 AMAZON-02US United States 2->12 14 daisy.ubuntu.com 2->14 16 Multi AV Scanner detection for submitted file 2->16 6 dash rm 2->6         started        8 dash rm 2->8         started        10 arm6.elf 2->10         started        signatures3 process4

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

SourceDetectionScannerLabelLink
arm6.elf40%VirustotalBrowse
arm6.elf42%ReversingLabsLinux.Backdoor.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.24
truefalse
    		high

    World Map of Contacted IPs

    • No. of IPs < 25%
    • 25% < No. of IPs < 50%
    • 50% < No. of IPs < 75%
    • 75% < No. of IPs

    Public IPs

    IPDomainCountryFlagASNASN NameMalicious
    54.217.10.153
    		unknownUnited States
    		16509AMAZON-02USfalse

    Joe Sandbox View / Context

    IPs

    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    54.217.10.153na.elfGet hashmaliciousPrometeiBrowse
      nshkarm6.elfGet hashmaliciousUnknownBrowse
        na.elfGet hashmaliciousPrometeiBrowse
          sh4.elfGet hashmaliciousMiraiBrowse
            arm6.elfGet hashmaliciousMiraiBrowse
              na.elfGet hashmaliciousPrometeiBrowse
                spc.elfGet hashmaliciousMirai, MoobotBrowse
                  a-r.m-6.Sakura.elfGet hashmaliciousGafgyt, MiraiBrowse
                    SecuriteInfo.com.Trojan.Linux.GenericKD.24542.21937.16674.elfGet hashmaliciousUnknownBrowse
                      hidakibest.mpsl.elfGet hashmaliciousGafgyt, MiraiBrowse

                        Domains

                        MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                        daisy.ubuntu.comsplarm6.elfGet hashmaliciousUnknownBrowse
                        • 162.213.35.24
                        zerarm6.elfGet hashmaliciousUnknownBrowse
                        • 162.213.35.24
                        nabarm6.elfGet hashmaliciousUnknownBrowse
                        • 162.213.35.24
                        .i.elfGet hashmaliciousUnknownBrowse
                        • 162.213.35.24
                        .i.elfGet hashmaliciousUnknownBrowse
                        • 162.213.35.24
                        arm6.elfGet hashmaliciousMiraiBrowse
                        • 162.213.35.24
                        mips.elfGet hashmaliciousMiraiBrowse
                        • 162.213.35.25
                        mpsl.elfGet hashmaliciousMiraiBrowse
                        • 162.213.35.24
                        arm.elfGet hashmaliciousMiraiBrowse
                        • 162.213.35.25
                        yakov.arm6.elfGet hashmaliciousUnknownBrowse
                        • 162.213.35.24

                        ASNs

                        MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                        AMAZON-02USnabarm.elfGet hashmaliciousUnknownBrowse
                        • 34.218.254.181
                        nklm68k.elfGet hashmaliciousUnknownBrowse
                        • 54.192.176.97
                        morte.mpsl.elfGet hashmaliciousUnknownBrowse
                        • 108.131.187.45
                        nklx86.elfGet hashmaliciousUnknownBrowse
                        • 52.13.176.254
                        nabx86.elfGet hashmaliciousUnknownBrowse
                        • 44.247.206.174
                        morte.x64.elfGet hashmaliciousUnknownBrowse
                        • 175.41.238.255
                        jklarm5.elfGet hashmaliciousUnknownBrowse
                        • 52.36.182.197
                        nklspc.elfGet hashmaliciousUnknownBrowse
                        • 18.137.130.158
                        zermpsl.elfGet hashmaliciousUnknownBrowse
                        • 34.249.145.219
                        jklmpsl.elfGet hashmaliciousUnknownBrowse
                        • 18.153.210.49

                        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):5.975900060235059
                        TrID:
                        • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                        File name:arm6.elf
                        File size:66'808 bytes
                        MD5:a20f0723e720ea004593740e0189233e
                        SHA1:7ebe17a407cef37b18d63e209462a95fd567b46e
                        SHA256:1fd9c8d2b65dbb30ac63cdc09482b66eba044b0d5836fed272101c6d98f4b27b
                        SHA512:8781dbd7ea82cd2c83a304bc11537984418612edf12e898392d696fb22ba8bea3f18073180aa00a64a5d4fc9d02dfed16b113c80c791d61f1edaae7d27f52858
                        SSDEEP:1536:eRni027dMWUXqKa28y1jLRQ+4wajjQZYAIGHQ3sMqidmGErl:N7KWAa28y1Huwajc8mGErl
                        TLSH:CB63F746B8918B12C5D413BAFA2E118D331767B8E2DFB213DD105F247B8A82F0E77956
                        File Content Preview:.ELF..............(.....T...4...........4. ...(.....................x...x...........................x...............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.x.............-.@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:0x8154
                        Flags:0x4000002
                        ELF Header Size:52
                        Program Header Offset:52
                        Program Header Size:32
                        Number of Program Headers:3
                        Section Header Offset:66288
                        Section Header Size:40
                        Number of Section Headers:13
                        Header String Table Index:12

                        Sections

                        NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                        NULL0x00x00x00x00x0000
                        .initPROGBITS0x80940x940x100x00x6AX004
                        .textPROGBITS0x80b00xb00xf39c0x00x6AX0016
                        .finiPROGBITS0x1744c0xf44c0x100x00x6AX004
                        .rodataPROGBITS0x1745c0xf45c0x91c0x00x2A004
                        .init_arrayINIT_ARRAY0x180040x100080x40x00x3WA004
                        .fini_arrayFINI_ARRAY0x180080x1000c0x40x00x3WA004
                        .jcrPROGBITS0x1800c0x100100x40x00x3WA004
                        .gotPROGBITS0x180100x100140x740x40x3WA004
                        .dataPROGBITS0x180840x100880x1f40x00x3WA004
                        .bssNOBITS0x182780x1027c0x35640x00x3WA004
                        .ARM.attributesARM_ATTRIBUTES0x00x1027c0x100x00x0001
                        .shstrtabSTRTAB0x00x1028c0x620x00x0001

                        Program Segments

                        TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                        LOAD0x00x80000x80000xfd780xfd786.03420x5R E0x8000.init .text .fini .rodata
                        LOAD0x100040x180040x180000x2780xb7d83.19270x6RW 0x8000.init_array .fini_array .jcr .got .data .bss
                        GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                        Network Behavior

                        Download Network PCAP: filtered – full

                        Network Port Distribution

                        • Total Packets: 4
                        • • 443 (HTTPS)
                        • • 53 (DNS)
                        TimestampSource PortDest PortSource IPDest IP
                        Mar 3, 2025 23:08:38.746809006 CET37676443192.168.2.1354.217.10.153
                        Mar 3, 2025 23:08:38.752490997 CET4433767654.217.10.153192.168.2.13
                        Mar 3, 2025 23:08:38.752562046 CET37676443192.168.2.1354.217.10.153
                        TimestampSource PortDest PortSource IPDest IP
                        Mar 3, 2025 23:08:11.999140978 CET5247153192.168.2.131.1.1.1
                        Mar 3, 2025 23:08:11.999191999 CET5205253192.168.2.131.1.1.1
                        Mar 3, 2025 23:08:12.006388903 CET53520521.1.1.1192.168.2.13
                        Mar 3, 2025 23:08:12.007139921 CET53524711.1.1.1192.168.2.13

                        DNS Queries

                        TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
                        Mar 3, 2025 23:08:11.999140978 CET192.168.2.131.1.1.10x5f7eStandard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
                        Mar 3, 2025 23:08:11.999191999 CET192.168.2.131.1.1.10x6567Standard query (0)daisy.ubuntu.com28IN (0x0001)false

                        DNS Answers

                        TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                        Mar 3, 2025 23:08:12.007139921 CET1.1.1.1192.168.2.130x5f7eNo error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
                        Mar 3, 2025 23:08:12.007139921 CET1.1.1.1192.168.2.130x5f7eNo error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

                        System Behavior

                        General

                        Start time (UTC):22:08:09
                        Start date (UTC):03/03/2025
                        Path:/tmp/arm6.elf
                        Arguments:/tmp/arm6.elf
                        File size:4956856 bytes
                        MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                        File Activities

                        Process Activities

                        System Activities


                        General

                        Start time (UTC):22:08:37
                        Start date (UTC):03/03/2025
                        Path:/usr/bin/dash
                        Arguments:-
                        File size:129816 bytes
                        MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                        Process Activities


                        General

                        Start time (UTC):22:08:37
                        Start date (UTC):03/03/2025
                        Path:/usr/bin/rm
                        Arguments:rm -f /tmp/tmp.UZelZSRIwB /tmp/tmp.Ew8UpaotHY /tmp/tmp.t9weC2qvTw
                        File size:72056 bytes
                        MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                        File Activities


                        General

                        Start time (UTC):22:08:37
                        Start date (UTC):03/03/2025
                        Path:/usr/bin/dash
                        Arguments:-
                        File size:129816 bytes
                        MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                        Process Activities


                        General

                        Start time (UTC):22:08:37
                        Start date (UTC):03/03/2025
                        Path:/usr/bin/rm
                        Arguments:rm -f /tmp/tmp.UZelZSRIwB /tmp/tmp.Ew8UpaotHY /tmp/tmp.t9weC2qvTw
                        File size:72056 bytes
                        MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                        File Activities