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Linux Analysis Report
boatnet.arm5.elf

Overview

General Information

Sample name:boatnet.arm5.elf
Analysis ID:1582555
MD5:5680b553d7990383ac30728dc210c7e9
SHA1:2e17845d26e6d90797cd711ba6cdfcdffe513447
SHA256:754c52a5236f701b2b83914f478c1bace8f1735a00f7702b3b70f80059b9be62
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:68
Range:0 - 100
Whitelisted:false

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Sample is packed with UPX
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
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)
Yara signature match

Classification

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1582555
Start date and time:2024-12-30 21:23:07 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 25s
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:boatnet.arm5.elf
Detection:MAL
Classification:mal68.troj.evad.linELF@0/0@0/0
  • VT rate limit hit for: boatnet.arm5.elf
Command:/tmp/boatnet.arm5.elf
PID:6248
Exit Code:127
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • boatnet.arm5.elf (PID: 6248, Parent: 6171, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/boatnet.arm5.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
6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security
    6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmpLinux_Trojan_Gafgyt_28a2fe0cunknownunknown
    • 0xa858:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa86c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa880:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa894:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa8a8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa8bc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa8d0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa8e4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa8f8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa90c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa920:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa934:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa948:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa95c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa970:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa984:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa998:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa9ac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa9c0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa9d4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    • 0xa9e8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
    6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmpLinux_Trojan_Gafgyt_ea92cca8unknownunknown
    • 0xadb0:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64
    No Suricata rule has matched

    Click to jump to signature section

    Show All Signature Results

    AV Detection

    barindex
    Source: boatnet.arm5.elfReversingLabs: Detection: 36%
    Source: global trafficTCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
    Source: global trafficTCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
    Source: global trafficTCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
    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: 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: boatnet.arm5.elfString found in binary or memory: http://upx.sf.net
    Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
    Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443

    System Summary

    barindex
    Source: 6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
    Source: 6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
    Source: LOAD without section mappingsProgram segment: 0x8000
    Source: 6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
    Source: 6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
    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. $
    Source: boatnet.arm5.elfSubmission file: segment LOAD with 7.8927 entropy (max. 8.0)
    Source: /tmp/boatnet.arm5.elf (PID: 6248)Queries kernel information via 'uname': Jump to behavior
    Source: boatnet.arm5.elf, 6248.1.000055fc528f5000.000055fc52a63000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
    Source: boatnet.arm5.elf, 6248.1.00007ffd91d99000.00007ffd91dba000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/boatnet.arm5.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/boatnet.arm5.elf
    Source: boatnet.arm5.elf, 6248.1.000055fc528f5000.000055fc52a63000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
    Source: boatnet.arm5.elf, 6248.1.00007ffd91d99000.00007ffd91dba000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm

    Stealing of Sensitive Information

    barindex
    Source: Yara matchFile source: 6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmp, type: MEMORY

    Remote Access Functionality

    barindex
    Source: Yara matchFile source: 6248.1.00007f6eac017000.00007f6eac023000.r-x.sdmp, type: MEMORY
    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
    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
    SourceDetectionScannerLabelLink
    boatnet.arm5.elf37%ReversingLabsLinux.Trojan.Multiverze
    No Antivirus matches
    No Antivirus matches
    No Antivirus matches
    No contacted domains info
    NameSourceMaliciousAntivirus DetectionReputation
    http://upx.sf.netboatnet.arm5.elffalse
      high
      • No. of IPs < 25%
      • 25% < No. of IPs < 50%
      • 50% < No. of IPs < 75%
      • 75% < No. of IPs
      IPDomainCountryFlagASNASN NameMalicious
      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, ARM, version 1 (ARM), statically linked, no section header
                                              Entropy (8bit):7.88854532370009
                                              TrID:
                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                              File name:boatnet.arm5.elf
                                              File size:18'760 bytes
                                              MD5:5680b553d7990383ac30728dc210c7e9
                                              SHA1:2e17845d26e6d90797cd711ba6cdfcdffe513447
                                              SHA256:754c52a5236f701b2b83914f478c1bace8f1735a00f7702b3b70f80059b9be62
                                              SHA512:021727ba20093eb570de0d41f4720d4049f880914d4d20b3628c97d89e0ec7311814fc8293bf5390dfab9f280a4775cfe5157c2dc2c1b0169cdfe110dcea0505
                                              SSDEEP:384:JdSP0EnPELJBIOv4WRWNlZTzuJBKnux3OyxquDJkChhymdGUop5h7O:JE0ePElCKANlcAnRJuDzs3Uoz9O
                                              TLSH:0482D02028456520E970A47AAFAF86CBA39F573CE4F77061651C87942983A0745FEBC7
                                              File Content Preview:.ELF...a..........(..... ...4...........4. ...(......................G...G..............`:..`...`...................Q.td..............................CvUPX!........t...t.......q..........?.E.h;.}...^........m....i....H...m..6........UC.....Oh...q.-~W.;...

                                              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:0xb620
                                              Flags:0x2
                                              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
                                              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                              LOAD0x00x80000x80000x47cf0x47cf7.89270x5R E0x8000
                                              LOAD0x3a600x1ba600x1ba600x00x00.00000x6RW 0x8000
                                              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                              TimestampSource PortDest PortSource IPDest IP
                                              Dec 30, 2024 21:23:54.397979021 CET43928443192.168.2.2391.189.91.42
                                              Dec 30, 2024 21:23:59.773299932 CET42836443192.168.2.2391.189.91.43
                                              Dec 30, 2024 21:24:01.309056997 CET4251680192.168.2.23109.202.202.202
                                              Dec 30, 2024 21:24:14.875138998 CET43928443192.168.2.2391.189.91.42
                                              Dec 30, 2024 21:24:27.161478996 CET42836443192.168.2.2391.189.91.43
                                              Dec 30, 2024 21:24:31.256944895 CET4251680192.168.2.23109.202.202.202
                                              Dec 30, 2024 21:24:55.829560995 CET43928443192.168.2.2391.189.91.42

                                              System Behavior

                                              Start time (UTC):20:23:51
                                              Start date (UTC):30/12/2024
                                              Path:/tmp/boatnet.arm5.elf
                                              Arguments:/tmp/boatnet.arm5.elf
                                              File size:4956856 bytes
                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1