Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1532512
MD5: 6e4b2522b7fc360d9d6c00a51dd2b363
SHA1: e4b1340e990cb56746dbb0a77c39eabff5f59f37
SHA256: 56516e052f4a2433a3617724c6f49427e415be0bc84ffc96a840b326da0d1fbf
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 22
Range: 0 - 100
Whitelisted: false

Signatures

Connects to many ports of the same IP (likely port scanning)
Detected TCP or UDP traffic on non-standard ports
Found strings indicative of a multi-platform dropper
Sample has stripped symbol table
Sample listens on a socket
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

Found strings indicative of a multi-platform dropper
Source: na.elf String: ash|login|wget|curl|tftp|ntpdate
Source: na.elf String: l/proc//exe|ash|login|wget|curl|tftp|ntpdate/fdsocket|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/

Networking
barindex
Connects to many ports of the same IP (likely port scanning)
Source: global traffic TCP traffic: 156.244.16.207 ports 1,5,7,8,9,15987
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.14:58928 -> 156.244.16.207:15987
Sample listens on a socket
Source: /tmp/na.elf (PID: 5527) Socket: 127.0.0.1:1234 Jump to behavior
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown TCP traffic detected without corresponding DNS query: 156.244.16.207
Source: unknown UDP traffic detected without corresponding DNS query: 185.84.81.194
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: sus22.troj.linELF@0/0@2/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 5527) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 5527.1.00007fff16f46000.00007fff16f67000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-sh4/tmp/na.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/na.elf
Source: na.elf, 5527.1.00007fff16f46000.00007fff16f67000.rw-.sdmp Binary or memory string: /usr/bin/qemu-sh4
Source: na.elf, 5527.1.000055a407d13000.000055a407d76000.rw-.sdmp Binary or memory string: U5!/etc/qemu-binfmt/sh4
Source: na.elf, 5527.1.000055a407d13000.000055a407d76000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/sh4
windows-stand
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
156.244.16.207
 unknown Seychelles
132839 POWERLINE-AS-APPOWERLINEDATACENTERHK true
185.84.81.194
 unknown Germany
8648 KAMP-DE false

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true