Joe Sandbox Cloud Basic Analysis Report
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Linux Analysis Report
arm7.elf

Overview

General Information

Sample name:arm7.elf
Analysis ID:1646131
MD5:f8284f514b6ad487a92b1c0703d552a8
SHA1:4086f18ae54e26c5a11de66def6877ef0b252b79
SHA256:e1d66b1b928c923215c1ce79d895fe086edb63d347993379122513236d99b2e9
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:68
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Yara detected Mirai
Connects to many ports of the same IP (likely port scanning)
Sample deletes itself
Sample is packed with UPX
Detected TCP or UDP traffic on non-standard ports
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
Sample listens on a socket
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:1646131
Start date and time:2025-03-23 12:12:18 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 28s
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:mal68.troj.evad.linELF@0/0@0/0

Runtime Messages

Command:/tmp/arm7.elf
PID:5490
Exit Code:0
Exit Code Info:
Killed:False
Standard Output:
Obliterate You
Standard Error:

Process Tree

  • system is lnxubuntu20
  • arm7.elf (PID: 5490, Parent: 5413, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm7.elf
    • arm7.elf New Fork (PID: 5492, Parent: 5490)
      • arm7.elf New Fork (PID: 5494, Parent: 5492)
        • arm7.elf New Fork (PID: 5496, Parent: 5494)
  • 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

Memory Dumps

SourceRuleDescriptionAuthorStrings
5490.1.00007f3f34017000.00007f3f3402b000.r-x.sdmpJoeSecurity_Mirai_9Yara detected MiraiJoe Security

    Suricata Signatures

    ⊘No Suricata rule has matched

    Joe Sandbox Signatures

    • • AV Detection
    • • Networking
    • • System Summary
    • • Data Obfuscation
    • • Hooking and other Techniques for Hiding and Protection
    • • Malware Analysis System Evasion
    • • Stealing of Sensitive Information
    • • Remote Access Functionality

    Click to jump to signature section

    Show All Signature Results

    AV Detection

    barindex
    Source: arm7.elfVirustotal: Detection: 24%Perma Link
    Source: arm7.elfReversingLabs: Detection: 30%

    Networking

    barindex
    Source: global trafficTCP traffic: 198.98.51.68 ports 1,2,3,4,5,23451
    Source: global trafficTCP traffic: 192.168.2.14:60122 -> 198.98.51.68:23451
    Source: /tmp/arm7.elf (PID: 5490)Socket: 127.0.0.1:23451Jump to behavior
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: unknownTCP traffic detected without corresponding DNS query: 198.98.51.68
    Source: arm7.elfString found in binary or memory: http://upx.sf.net
    Source: LOAD without section mappingsProgram segment: 0x8000
    Source: classification engineClassification label: mal68.troj.evad.linELF@0/0@0/0

    Data Obfuscation

    barindex
    Source: initial sampleString containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
    Source: initial sampleString containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
    Source: initial sampleString containing UPX found: $Id: UPX 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $

    Hooking and other Techniques for Hiding and Protection

    barindex
    Source: /tmp/arm7.elf (PID: 5490)File: /tmp/arm7.elfJump to behavior
    Source: arm7.elfSubmission file: segment LOAD with 7.9653 entropy (max. 8.0)
    Source: /tmp/arm7.elf (PID: 5490)Queries kernel information via 'uname': Jump to behavior
    Source: arm7.elf, 5490.1.0000557b4b152000.0000557b4b360000.rw-.sdmpBinary or memory string: K{U!/etc/qemu-binfmt/arm
    Source: arm7.elf, 5490.1.0000557b4b152000.0000557b4b360000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
    Source: arm7.elf, 5490.1.00007fffb59e5000.00007fffb5a06000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
    Source: arm7.elf, 5490.1.00007fffb59e5000.00007fffb5a06000.rw-.sdmpBinary or memory string: x86_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

    Stealing of Sensitive Information

    barindex
    Source: Yara matchFile source: 5490.1.00007f3f34017000.00007f3f3402b000.r-x.sdmp, type: MEMORY

    Remote Access Functionality

    barindex
    Source: Yara matchFile source: 5490.1.00007f3f34017000.00007f3f3402b000.r-x.sdmp, type: MEMORY

    Mitre Att&ck Matrix

    ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
    Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception11
    Obfuscated Files or Information    		OS Credential Dumping11
    Security Software Discovery    		Remote ServicesData from Local System1
    Non-Standard Port    		Exfiltration Over Other Network MediumAbuse Accessibility Features
    CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization Scripts1
    File Deletion    		LSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable MediaJunk DataExfiltration 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
    behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1646131 Sample: arm7.elf Startdate: 23/03/2025 Architecture: LINUX Score: 68 18 198.98.51.68, 23451, 60122 PONYNETUS United States 2->18 20 Multi AV Scanner detection for submitted file 2->20 22 Yara detected Mirai 2->22 24 Connects to many ports of the same IP (likely port scanning) 2->24 26 Sample is packed with UPX 2->26 9 arm7.elf 2->9         started        signatures3 process4 signatures5 28 Sample deletes itself 9->28 12 arm7.elf 9->12         started        process6 process7 14 arm7.elf 12->14         started        process8 16 arm7.elf 14->16         started       

    Screenshots

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    Thumbnails

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


    windows-stand

    Antivirus, Machine Learning and Genetic Malware Detection

    Initial Sample

    SourceDetectionScannerLabelLink
    arm7.elf24%VirustotalBrowse
    arm7.elf31%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

    ⊘No contacted domains info
    NameSourceMaliciousAntivirus DetectionReputation
    http://upx.sf.netarm7.elffalse
      		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
      198.98.51.68
      		unknownUnited States
      		53667PONYNETUStrue

      Joe Sandbox View / Context

      IPs

      ⊘No context

      Domains

      ⊘No context

      ASNs

      MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
      PONYNETUSboatnet.ppc.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.m68k.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.arm7.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.mips.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.x86.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.sh4.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.mpsl.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.arm.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      boatnet.spc.elfGet hashmaliciousMiraiBrowse
      • 209.141.40.172
      pp.pd.exeGet hashmaliciousUnknownBrowse
      • 198.98.57.55

      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 (GNU/Linux), statically linked, no section header
      Entropy (8bit):7.980197524186947
      TrID:
      • ELF Executable and Linkable format (generic) (4004/1) 100.00%
      File name:arm7.elf
      File size:54'236 bytes
      MD5:f8284f514b6ad487a92b1c0703d552a8
      SHA1:4086f18ae54e26c5a11de66def6877ef0b252b79
      SHA256:e1d66b1b928c923215c1ce79d895fe086edb63d347993379122513236d99b2e9
      SHA512:780b4a2cb7dd19c735cada0fe70e6ab7cfbb4fc21bdc1324d6ab32435feff94198c4cee5f1e3bd39f5e11fb04a3c777a496dac776199091d0321b2648d7bdeac
      SSDEEP:1536:sOup5EcrTpTwFSznV/aZ1L2LdCi9/zd2b:sOup5EcrT6FSznV/aZ1L24Wdu
      TLSH:313302227F8A81334CA62C7269F64842566A5BFCF1AEB0D61078464C7514E9B2DE3B53
      File Content Preview:.ELF..............(.........4...........4. ...(..........................................w...w...w..................Q.td...............................OUPX!.........,...,......k..........?.E.h;....#..$...o....&..n.. {v..3PC.2...]VZ..R.....2.JL......E...3.

      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 - Linux
      ABI Version:0
      Entry Point Address:0xff10
      Flags:0x4000002
      ELF Header Size:52
      Program Header Offset:52
      Program Header Size:32
      Number of Program Headers:3
      Section Header Offset:0
      Section Header Size:40
      Number of Section Headers:0
      Header String Table Index:0

      Program Segments

      TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
      LOAD0x00x80000x80000x90fd0x90fd7.96530x5R E0x8000
      LOAD0x779c0x2779c0x2779c0x00x00.00000x6RW 0x8000
      GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

      Network Behavior

      Download Network PCAP: filtered – full

      TimestampSource PortDest PortSource IPDest IP
      Mar 23, 2025 12:13:06.448688984 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:13:06.539036989 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:13:06.539129972 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:13:06.548094034 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:13:06.641177893 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:13:06.641227007 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:13:06.732245922 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:13:16.553917885 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:13:16.644351006 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:13:16.644375086 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:13:16.644423008 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:13:31.762276888 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:13:31.762468100 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:13:46.851730108 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:13:46.851819038 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:14:01.942969084 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:14:01.943315983 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:14:16.691412926 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:14:16.786919117 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:14:16.787108898 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:14:31.924921989 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:14:31.925208092 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:14:47.020127058 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:14:47.020442963 CET6012223451192.168.2.14198.98.51.68
      Mar 23, 2025 12:15:02.111560106 CET2345160122198.98.51.68192.168.2.14
      Mar 23, 2025 12:15:02.112123966 CET6012223451192.168.2.14198.98.51.68

      System Behavior

      General

      Start time (UTC):11:13:05
      Start date (UTC):23/03/2025
      Path:/tmp/arm7.elf
      Arguments:/tmp/arm7.elf
      File size:4956856 bytes
      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

      File Activities

      Process Activities

      System Activities

      Network Activities


      General

      Start time (UTC):11:13:05
      Start date (UTC):23/03/2025
      Path:/tmp/arm7.elf
      Arguments:-
      File size:4956856 bytes
      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

      Process Activities

      Network Activities


      General

      Start time (UTC):11:13:05
      Start date (UTC):23/03/2025
      Path:/tmp/arm7.elf
      Arguments:-
      File size:4956856 bytes
      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

      File Activities

      Process Activities


      General

      Start time (UTC):11:13:05
      Start date (UTC):23/03/2025
      Path:/tmp/arm7.elf
      Arguments:-
      File size:4956856 bytes
      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

      File Activities

      Process Activities