Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1530543
MD5: 2bc8fdb30c561d2fa0d96e5a4d14b0bb
SHA1: 6fc0ec8fa3b9b468130f5224db086febbb16e6aa
SHA256: b48d3560388a23014805ad5f2518b5c965a902441255693234d4d70526f8084b
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 64
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
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
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

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: na.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: na.elf ReversingLabs: Detection: 31%
Source: na.elf Virustotal: Detection: 29% Perma Link
Found strings indicative of a multi-platform dropper
Source: na.elf String: ash|login|wget|curl|tftp|ntpdate
Source: na.elf String: /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: 154.90.62.142 ports 1,5,7,8,9,15987
Sends malformed DNS queries
Source: global traffic DNS traffic detected: malformed DNS query: subcarrace.indy. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: 75cents.libre. [malformed]
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.14:52878 -> 154.90.62.142:15987
Sample listens on a socket
Source: /tmp/na.elf (PID: 5509) Socket: 127.0.0.1:1234 Jump to behavior
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown TCP traffic detected without corresponding DNS query: 154.90.62.142
Source: unknown UDP traffic detected without corresponding DNS query: 54.36.111.116
Source: unknown UDP traffic detected without corresponding DNS query: 116.203.104.203
Source: unknown UDP traffic detected without corresponding DNS query: 116.203.104.203
Source: unknown UDP traffic detected without corresponding DNS query: 54.36.111.116
Source: unknown UDP traffic detected without corresponding DNS query: 116.203.104.203
Source: global traffic DNS traffic detected: DNS query: subcarrace.indy. [malformed]
Source: global traffic DNS traffic detected: DNS query: 75cents.libre. [malformed]
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: mal64.troj.linELF@0/0@4/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 5509) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 5509.1.00005647c8f00000.00005647c8fa8000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mips
Source: na.elf, 5509.1.00005647c8f00000.00005647c8fa8000.rw-.sdmp Binary or memory string: GV!/etc/qemu-binfmt/mips
Source: na.elf, 5509.1.00007ffd45bdb000.00007ffd45bfc000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mips
Source: na.elf, 5509.1.00007ffd45bdb000.00007ffd45bfc000.rw-.sdmp Binary or memory string: hx86_64/usr/bin/qemu-mips/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

No Screenshots

  • 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
154.90.62.142
 unknown Seychelles
40065 CNSERVERSUS true

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true
75cents.libre. [malformed] unknown unknown
subcarrace.indy. [malformed] unknown unknown