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Linux Analysis Report
wind.arm7.elf

Overview

General Information

Sample name:wind.arm7.elf
Analysis ID:1587073
MD5:ea27e023adb96d08e4ac21d68cc3fdde
SHA1:17183680b16ab549fb640208e027a6f2ca494ab5
SHA256:8556934b78ac25d33addbdd7c11c0f82e608276cb2e6e41f2c0ece63136141fb
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:76
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
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

Classification

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1587073
Start date and time:2025-01-09 22:36:43 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 27s
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:wind.arm7.elf
Detection:MAL
Classification:mal76.troj.evad.linELF@0/0@2/0
  • VT rate limit hit for: wind.arm7.elf
Command:/tmp/wind.arm7.elf
PID:5491
Exit Code:139
Exit Code Info:SIGSEGV (11) Segmentation fault invalid memory reference
Killed:False
Standard Output:
lzrd cock fest"/proc/"/exe
Standard Error:qemu: uncaught target signal 11 (Segmentation fault) - core dumped
  • system is lnxubuntu20
  • wind.arm7.elf (PID: 5491, Parent: 5414, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/wind.arm7.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
5491.1.00007effa0017000.00007effa002d000.r-x.sdmpJoeSecurity_Mirai_5Yara detected MiraiJoe Security
    5491.1.00007effa0017000.00007effa002d000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security
      5491.1.00007effa0017000.00007effa002d000.r-x.sdmpLinux_Trojan_Gafgyt_28a2fe0cunknownunknown
      • 0x143dc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x143f0:$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
      • 0x14404:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x14418:$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
      • 0x1442c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x14440:$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
      • 0x14454:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x14468:$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
      • 0x1447c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x14490:$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
      • 0x144a4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x144b8:$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
      • 0x144cc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x144e0:$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
      • 0x144f4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x14508:$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
      • 0x1451c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x14530:$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
      • 0x14544:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      • 0x14558:$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
      • 0x1456c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
      5491.1.00007effa0017000.00007effa002d000.r-x.sdmpLinux_Trojan_Gafgyt_ea92cca8unknownunknown
      • 0x14934:$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
      5491.1.00007effa0017000.00007effa002d000.r-x.sdmpMirai_Botnet_MalwareDetects Mirai Botnet MalwareFlorian Roth
      • 0x14358:$x1: POST /cdn-cgi/
      • 0x15108:$s1: LCOGQGPTGP
      Click to see the 4 entries
      No Suricata rule has matched

      Click to jump to signature section

      Show All Signature Results

      AV Detection

      barindex
      Source: wind.arm7.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: wind.arm7.elfString found in binary or memory: http://upx.sf.net

      System Summary

      barindex
      Source: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
      Source: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
      Source: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORYMatched rule: Detects Mirai Botnet Malware Author: Florian Roth
      Source: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORYMatched rule: Detects ELF malware Mirai related Author: Florian Roth
      Source: Process Memory Space: wind.arm7.elf PID: 5491, type: MEMORYSTRMatched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
      Source: Process Memory Space: wind.arm7.elf PID: 5491, type: MEMORYSTRMatched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
      Source: LOAD without section mappingsProgram segment: 0x8000
      Source: 5491.1.00007effa0017000.00007effa002d000.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: 5491.1.00007effa0017000.00007effa002d000.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: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORYMatched rule: Mirai_Botnet_Malware date = 2016-10-04, hash5 = 420bf9215dfb04e5008c5e522eee9946599e2b323b17f17919cd802ebb012175, hash4 = 2efa09c124f277be2199bee58f49fc0ce6c64c0bef30079dfb3d94a6de492a69, hash3 = 20683ff7a5fec1237fc09224af40be029b9548c62c693844624089af568c89d4, hash2 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, hash1 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, author = Florian Roth, description = Detects Mirai Botnet Malware, hash10 = c61bf95146c68bfbbe01d7695337ed0e93ea759f59f651799f07eecdb339f83f, hash11 = d9573c3850e2ae35f371dff977fc3e5282a5e67db8e3274fd7818e8273fd5c89, hash12 = f1100c84abff05e0501e77781160d9815628e7fd2de9e53f5454dbcac7c84ca5, hash9 = bf0471b37dba7939524a30d7d5afc8fcfb8d4a7c9954343196737e72ea4e2dc4, hash8 = 89570ae59462e6472b6769545a999bde8457e47ae0d385caaa3499ab735b8147, hash7 = 70bb0ec35dd9afcfd52ec4e1d920e7045dc51dca0573cd4c753987c9d79405c0, hash6 = 62cdc8b7fffbaf5683a466f6503c03e68a15413a90f6afd5a13ba027631460c6, reference = Internal Research, license = https://creativecommons.org/licenses/by-nc/4.0/, hash13 = fb713ccf839362bf0fbe01aedd6796f4d74521b133011b408e42c1fd9ab8246b
      Source: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORYMatched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
      Source: Process Memory Space: wind.arm7.elf PID: 5491, type: MEMORYSTRMatched 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: Process Memory Space: wind.arm7.elf PID: 5491, type: MEMORYSTRMatched 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: mal76.troj.evad.linELF@0/0@2/0

      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: wind.arm7.elfSubmission file: segment LOAD with 7.9646 entropy (max. 8.0)
      Source: /tmp/wind.arm7.elf (PID: 5491)Queries kernel information via 'uname': Jump to behavior
      Source: wind.arm7.elf, 5491.1.000055d248250000.000055d24841e000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
      Source: wind.arm7.elf, 5491.1.00007ffe7f70d000.00007ffe7f72e000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/wind.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/wind.arm7.elf
      Source: wind.arm7.elf, 5491.1.000055d248250000.000055d24841e000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
      Source: wind.arm7.elf, 5491.1.00007ffe7f70d000.00007ffe7f72e000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
      Source: wind.arm7.elf, 5491.1.00007ffe7f70d000.00007ffe7f72e000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

      Stealing of Sensitive Information

      barindex
      Source: Yara matchFile source: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORY
      Source: Yara matchFile source: Process Memory Space: wind.arm7.elf PID: 5491, type: MEMORYSTR

      Remote Access Functionality

      barindex
      Source: Yara matchFile source: 5491.1.00007effa0017000.00007effa002d000.r-x.sdmp, type: MEMORY
      Source: Yara matchFile source: Process Memory Space: wind.arm7.elf PID: 5491, type: MEMORYSTR
      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-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
      SourceDetectionScannerLabelLink
      wind.arm7.elf42%ReversingLabsLinux.Trojan.Mirai
      No Antivirus matches
      No Antivirus matches
      No Antivirus matches
      NameIPActiveMaliciousAntivirus DetectionReputation
      daisy.ubuntu.com
      162.213.35.24
      truefalse
        high
        NameSourceMaliciousAntivirus DetectionReputation
        http://upx.sf.netwind.arm7.elffalse
          high
          No contacted IP infos
          No context
          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
          daisy.ubuntu.comwind.mips.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.25
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          wind.m68k.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.25
          arm6.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.25
          boatnet.mpsl.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.25
          boatnet.x86.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          boatnet.arm.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          boatnet.ppc.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          boatnet.m68k.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          boatnet.sh4.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          No context
          No context
          No context
          No created / dropped files found
          File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (GNU/Linux), statically linked, no section header
          Entropy (8bit):7.978766277661187
          TrID:
          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
          File name:wind.arm7.elf
          File size:50'912 bytes
          MD5:ea27e023adb96d08e4ac21d68cc3fdde
          SHA1:17183680b16ab549fb640208e027a6f2ca494ab5
          SHA256:8556934b78ac25d33addbdd7c11c0f82e608276cb2e6e41f2c0ece63136141fb
          SHA512:a37b94ec29631a8ccca90ffde89c94f6fb15118ac0c0d4605f463ddcf189999f41cb19285fdfe5b6c31aace0ce4c9f9a9bb3fcdb59191948cea64d70297ad4f0
          SSDEEP:1536:qIGFDR4bwGfuhoW9okqf0A/Ll/VJBgG89MiX+:i1R4fumSokqbLl/OGQM4+
          TLSH:F533F1A316B5DEFAD9600221ABAD8D6318921F3C64DEB0246164B71CC7E340B4FBA44F
          File Content Preview:.ELF..............(.........4...........4. ...(.........................................D...D...D...................Q.td............................>. NUPX!.........&...&......j..........?.E.h;....#..$...o...`B9.....*).......X.;.]F.W..s?T$...raO*j....Uq..

          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:0xf9a0
          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
          TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
          LOAD0x00x80000x80000x8b8d0x8b8d7.96460x5R E0x8000
          LOAD0xe440x28e440x28e440x00x00.00000x6RW 0x8000
          GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
          TimestampSource PortDest PortSource IPDest IP
          Jan 9, 2025 22:37:31.812232018 CET5490453192.168.2.141.1.1.1
          Jan 9, 2025 22:37:31.812297106 CET4439653192.168.2.141.1.1.1
          Jan 9, 2025 22:37:31.890239954 CET53443961.1.1.1192.168.2.14
          Jan 9, 2025 22:37:31.890671015 CET53549041.1.1.1192.168.2.14
          TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
          Jan 9, 2025 22:37:31.812232018 CET192.168.2.141.1.1.10xd6a3Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
          Jan 9, 2025 22:37:31.812297106 CET192.168.2.141.1.1.10xa0a0Standard query (0)daisy.ubuntu.com28IN (0x0001)false
          TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
          Jan 9, 2025 22:37:31.890671015 CET1.1.1.1192.168.2.140xd6a3No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
          Jan 9, 2025 22:37:31.890671015 CET1.1.1.1192.168.2.140xd6a3No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

          System Behavior

          Start time (UTC):21:37:29
          Start date (UTC):09/01/2025
          Path:/tmp/wind.arm7.elf
          Arguments:/tmp/wind.arm7.elf
          File size:4956856 bytes
          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1