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Linux Analysis Report
sora.arm6.elf

Overview

General Information

Sample name:sora.arm6.elf
Analysis ID:1597914
MD5:dbef6efd8bd633064c6c2dab5fafd703
SHA1:2f55b05e19d51a5f1c1a54679f20158278c6b5a1
SHA256:cc565ccca73ece3a2619aba96339551e1d39eb21f7ca7ada605d432be4013165
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

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1597914
Start date and time:2025-01-23 19:09:37 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 39s
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:sora.arm6.elf
Detection:MAL
Classification:mal76.troj.evad.linELF@0/0@2/0
Command:/tmp/sora.arm6.elf
PID:5752
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
  • sora.arm6.elf (PID: 5752, Parent: 5678, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/sora.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
5752.1.00007f79a0017000.00007f79a002b000.r-x.sdmpJoeSecurity_Mirai_9Yara detected MiraiJoe Security
    5752.1.00007f79a0017000.00007f79a002b000.r-x.sdmpJoeSecurity_Mirai_5Yara detected MiraiJoe Security
      5752.1.00007f79a0017000.00007f79a002b000.r-x.sdmpMAL_ELF_LNX_Mirai_Oct10_2Detects ELF malware Mirai relatedFlorian Roth
      • 0x1223c:$c01: 50 4F 53 54 20 2F 63 64 6E 2D 63 67 69 2F 00 00 20 48 54 54 50 2F 31 2E 31 0D 0A 55 73 65 72 2D 41 67 65 6E 74 3A 20 00 0D 0A 48 6F 73 74 3A
      Process Memory Space: sora.arm6.elf PID: 5752JoeSecurity_Mirai_9Yara detected MiraiJoe Security
        No Suricata rule has matched

        Click to jump to signature section

        Show All Signature Results

        AV Detection

        barindex
        Source: sora.arm6.elfReversingLabs: Detection: 71%
        Source: sora.arm6.elfVirustotal: Detection: 46%Perma Link
        Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
        Source: sora.arm6.elfString found in binary or memory: http://upx.sf.net

        System Summary

        barindex
        Source: 5752.1.00007f79a0017000.00007f79a002b000.r-x.sdmp, type: MEMORYMatched rule: Detects ELF malware Mirai related Author: Florian Roth
        Source: LOAD without section mappingsProgram segment: 0x8000
        Source: 5752.1.00007f79a0017000.00007f79a002b000.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: 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: sora.arm6.elfSubmission file: segment LOAD with 7.9601 entropy (max. 8.0)
        Source: /tmp/sora.arm6.elf (PID: 5752)Queries kernel information via 'uname': Jump to behavior
        Source: sora.arm6.elf, 5752.1.00007fffe3edf000.00007fffe3f00000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/sora.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/sora.arm6.elf
        Source: sora.arm6.elf, 5752.1.000056392c4f5000.000056392c723000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
        Source: sora.arm6.elf, 5752.1.00007fffe3edf000.00007fffe3f00000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
        Source: sora.arm6.elf, 5752.1.000056392c4f5000.000056392c723000.rw-.sdmpBinary or memory string: P,9V!/etc/qemu-binfmt/arm
        Source: sora.arm6.elf, 5752.1.00007fffe3edf000.00007fffe3f00000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

        Stealing of Sensitive Information

        barindex
        Source: Yara matchFile source: 5752.1.00007f79a0017000.00007f79a002b000.r-x.sdmp, type: MEMORY
        Source: Yara matchFile source: Process Memory Space: sora.arm6.elf PID: 5752, type: MEMORYSTR

        Remote Access Functionality

        barindex
        Source: Yara matchFile source: 5752.1.00007f79a0017000.00007f79a002b000.r-x.sdmp, type: MEMORY
        Source: Yara matchFile source: Process Memory Space: sora.arm6.elf PID: 5752, 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
        behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1597914 Sample: sora.arm6.elf Startdate: 23/01/2025 Architecture: LINUX Score: 76 8 daisy.ubuntu.com 2->8 10 Malicious sample detected (through community Yara rule) 2->10 12 Multi AV Scanner detection for submitted file 2->12 14 Yara detected Mirai 2->14 16 Sample is packed with UPX 2->16 6 sora.arm6.elf 2->6         started        signatures3 process4
        SourceDetectionScannerLabelLink
        sora.arm6.elf71%ReversingLabsLinux.Trojan.Mirai
        sora.arm6.elf46%VirustotalBrowse
        No Antivirus matches
        No Antivirus matches
        No Antivirus matches

        Download Network PCAP: filteredfull

        NameIPActiveMaliciousAntivirus DetectionReputation
        daisy.ubuntu.com
        162.213.35.24
        truefalse
          high
          NameSourceMaliciousAntivirus DetectionReputation
          http://upx.sf.netsora.arm6.elffalse
            high
            No contacted IP infos
            No context
            MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
            daisy.ubuntu.comsora.x86_64.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            loki.arm6.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            Kloki.arm6.elfGet hashmaliciousMiraiBrowse
            • 162.213.35.24
            arm6.elfGet hashmaliciousMoobotBrowse
            • 162.213.35.24
            arm5.elfGet hashmaliciousMoobotBrowse
            • 162.213.35.25
            telnet.mips.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.25
            telnet.arm5.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.24
            telnet.arm6.elfGet hashmaliciousUnknownBrowse
            • 162.213.35.25
            armv4l.elfGet hashmaliciousGafgyt, MiraiBrowse
            • 162.213.35.25
            telnet.arm7.elfGet hashmaliciousUnknownBrowse
            • 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):7.957355387833176
            TrID:
            • ELF Executable and Linkable format (generic) (4004/1) 100.00%
            File name:sora.arm6.elf
            File size:33'028 bytes
            MD5:dbef6efd8bd633064c6c2dab5fafd703
            SHA1:2f55b05e19d51a5f1c1a54679f20158278c6b5a1
            SHA256:cc565ccca73ece3a2619aba96339551e1d39eb21f7ca7ada605d432be4013165
            SHA512:e4fcd3f733291910e6193a45e1a90e807d75f3f6974191872cb112b92076e05a11295a60376b87850291aa9d0d1af12f8c1cd9b4c80f9c1532e1bbf3c50fb58e
            SSDEEP:768:8oiWiO031vpAPbrVWZK3XVGxm9X6w9q3UEL5Iy:8orm1vpALgUJ65Lx
            TLSH:2FE2F1A7D3729452DE382AF1F86E81CA67BD4BACC57B30A21615561C2D5E0436F3C8D3
            File Content Preview:.ELF..............(.........4...........4. ...(..........................................[..........................Q.td............................>. NUPX!.........8...8......T..........?.E.h;....#..$..1)...I<.1x9h.=60$.{5.4.C.$..}.H....<.o.......U...4..

            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:0xedf0
            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
            LOAD0x00x80000x80000x7fdd0x7fdd7.96010x5R E0x8000
            LOAD0x5b180x2db180x2db180x00x00.00000x6RW 0x8000
            GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

            Download Network PCAP: filteredfull

            TimestampSource PortDest PortSource IPDest IP
            Jan 23, 2025 19:10:41.511284113 CET5576053192.168.2.158.8.8.8
            Jan 23, 2025 19:10:41.518985033 CET53557608.8.8.8192.168.2.15
            Jan 23, 2025 19:10:41.519071102 CET5576053192.168.2.158.8.8.8
            Jan 23, 2025 19:10:41.519102097 CET5576053192.168.2.158.8.8.8
            Jan 23, 2025 19:10:41.519121885 CET5576053192.168.2.158.8.8.8
            Jan 23, 2025 19:10:41.527497053 CET53557608.8.8.8192.168.2.15
            Jan 23, 2025 19:10:41.527508974 CET53557608.8.8.8192.168.2.15
            Jan 23, 2025 19:10:41.975075960 CET53557608.8.8.8192.168.2.15
            Jan 23, 2025 19:10:41.975169897 CET5576053192.168.2.158.8.8.8
            Jan 23, 2025 19:10:42.104332924 CET53557608.8.8.8192.168.2.15
            Jan 23, 2025 19:10:42.104415894 CET5576053192.168.2.158.8.8.8
            Jan 23, 2025 19:10:43.974741936 CET53557608.8.8.8192.168.2.15
            Jan 23, 2025 19:10:43.974992990 CET5576053192.168.2.158.8.8.8
            Jan 23, 2025 19:10:43.979896069 CET53557608.8.8.8192.168.2.15
            TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
            Jan 23, 2025 19:10:41.519102097 CET192.168.2.158.8.8.80x3cd3Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
            Jan 23, 2025 19:10:41.519121885 CET192.168.2.158.8.8.80x1d52Standard query (0)daisy.ubuntu.com28IN (0x0001)false
            TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
            Jan 23, 2025 19:10:41.975075960 CET8.8.8.8192.168.2.150x3cd3No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
            Jan 23, 2025 19:10:41.975075960 CET8.8.8.8192.168.2.150x3cd3No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

            System Behavior

            Start time (UTC):18:10:38
            Start date (UTC):23/01/2025
            Path:/tmp/sora.arm6.elf
            Arguments:/tmp/sora.arm6.elf
            File size:4956856 bytes
            MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1