Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1528793
MD5: 81dafff4206f8f940591421cd512c2cf
SHA1: f9888dd9a7e868b967ff5a0db9195d3726325478
SHA256: f820461189e55ac4b14ff3f7f47fea1c55458b3cb63c292c38ff2d3f6576380f
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
Found strings indicative of a multi-platform dropper
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
Multi AV Scanner detection for submitted file
Source: na.elf ReversingLabs: Detection: 18%
Found strings indicative of a multi-platform dropper
Source: na.elf String: '/proc//exewgetashinitcurltftp/fdsocketproc/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: 38.54.57.248 ports 3,4,6,7,9,49376,15987
Source: global traffic TCP traffic: 156.244.16.207 ports 23789,2,3,7,8,9
Source: global traffic TCP traffic: 154.205.144.234 ports 54123,1,2,3,4,5
Source: global traffic TCP traffic: 154.90.62.142 ports 61543,23789,1,3,4,5,6
Source: global traffic TCP traffic: 156.244.7.75 ports 2,3,6,7,8,32876
Source: global traffic TCP traffic: 154.223.21.228 ports 46852,61543,2,4,5,6,8,42061,32876,15987
Source: global traffic TCP traffic: 38.60.249.66 ports 23789,1,2,5,6,7,27651,38429,15987
Source: global traffic TCP traffic: 38.60.198.180 ports 0,1,2,4,6,42061
Sends malformed DNS queries
Source: global traffic DNS traffic detected: malformed DNS query: kr3ddnsnet1.indy. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: r3racegame.indy. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: nineteen.libre. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: subcarrace.indy. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: 21savage.dyn. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: krddnsnet.dyn. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: 75cents.libre. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: kr2ddnsnet.dyn. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: fortyfivehundred.dyn. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: ru.coziest.lol. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: 2joints.libre. [malformed]
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:32798 -> 154.223.21.228:46852
Source: global traffic TCP traffic: 192.168.2.23:49732 -> 154.205.144.234:54123
Source: global traffic TCP traffic: 192.168.2.23:40526 -> 154.90.62.142:61543
Source: global traffic TCP traffic: 192.168.2.23:57654 -> 38.60.249.66:27651
Source: global traffic TCP traffic: 192.168.2.23:53700 -> 38.54.57.248:49376
Source: global traffic TCP traffic: 192.168.2.23:35878 -> 156.244.7.75:32876
Source: global traffic TCP traffic: 192.168.2.23:43772 -> 38.60.198.180:42061
Source: global traffic TCP traffic: 192.168.2.23:56852 -> 156.244.16.207:23789
Sample listens on a socket
Source: /tmp/na.elf (PID: 6283) Socket: 127.0.0.1:1234 Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper 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: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown UDP traffic detected without corresponding DNS query: 161.97.219.84
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.64.122
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.69.123
Source: unknown UDP traffic detected without corresponding DNS query: 63.231.92.27
Source: unknown UDP traffic detected without corresponding DNS query: 54.36.111.116
Source: unknown UDP traffic detected without corresponding DNS query: 161.97.219.84
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: 116.203.104.203
Source: unknown UDP traffic detected without corresponding DNS query: 162.243.19.47
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.64.122
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.64.122
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: 54.36.111.116
Source: unknown UDP traffic detected without corresponding DNS query: 192.3.165.37
Source: unknown UDP traffic detected without corresponding DNS query: 185.84.81.194
Source: unknown UDP traffic detected without corresponding DNS query: 192.3.165.37
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: unknown UDP traffic detected without corresponding DNS query: 162.243.19.47
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.69.123
Source: unknown UDP traffic detected without corresponding DNS query: 116.203.104.203
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.64.122
Source: unknown UDP traffic detected without corresponding DNS query: 192.3.165.37
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: 130.61.69.123
Source: unknown UDP traffic detected without corresponding DNS query: 185.84.81.194
Source: unknown UDP traffic detected without corresponding DNS query: 161.97.219.84
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.69.123
Source: unknown UDP traffic detected without corresponding DNS query: 63.231.92.27
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.69.123
Source: unknown UDP traffic detected without corresponding DNS query: 161.97.219.84
Source: unknown UDP traffic detected without corresponding DNS query: 162.243.19.47
Source: unknown UDP traffic detected without corresponding DNS query: 130.61.64.122
Source: unknown UDP traffic detected without corresponding DNS query: 185.84.81.194
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: 130.61.64.122
Source: unknown UDP traffic detected without corresponding DNS query: 54.36.111.116
Source: unknown UDP traffic detected without corresponding DNS query: 54.36.111.116
Source: global traffic DNS traffic detected: DNS query: r3racegame.indy
Source: global traffic DNS traffic detected: DNS query: kr3ddnsnet1.indy. [malformed]
Source: global traffic DNS traffic detected: DNS query: r3racegame.indy. [malformed]
Source: global traffic DNS traffic detected: DNS query: nineteen.libre. [malformed]
Source: global traffic DNS traffic detected: DNS query: imaverygoodbadboy.libre
Source: global traffic DNS traffic detected: DNS query: subcarrace.indy. [malformed]
Source: global traffic DNS traffic detected: DNS query: 21savage.dyn. [malformed]
Source: global traffic DNS traffic detected: DNS query: krddnsnet.dyn. [malformed]
Source: global traffic DNS traffic detected: DNS query: 75cents.libre. [malformed]
Source: global traffic DNS traffic detected: DNS query: kr2ddnsnet.dyn
Source: global traffic DNS traffic detected: DNS query: kr2ddnsnet.dyn. [malformed]
Source: global traffic DNS traffic detected: DNS query: eighteen.pirate
Source: global traffic DNS traffic detected: DNS query: fortyfivehundred.dyn. [malformed]
Source: global traffic DNS traffic detected: DNS query: ru.coziest.lol. [malformed]
Source: global traffic DNS traffic detected: DNS query: f.codingdrunk.cc
Source: global traffic DNS traffic detected: DNS query: krddnsnet.dyn
Source: global traffic DNS traffic detected: DNS query: 2joints.libre
Source: global traffic DNS traffic detected: DNS query: kr3ddnsnet1.indy
Source: global traffic DNS traffic detected: DNS query: subcarrace.indy
Source: global traffic DNS traffic detected: DNS query: ru.coziest.lol
Source: global traffic DNS traffic detected: DNS query: nineteen.libre
Source: global traffic DNS traffic detected: DNS query: 2joints.libre. [malformed]
Source: global traffic DNS traffic detected: DNS query: 75cents.libre
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal56.troj.linELF@0/0@59/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 6283) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 6283.1.00005636c03c0000.00005636c0468000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mipsel
Source: na.elf, 6283.1.00005636c03c0000.00005636c0468000.rw-.sdmp Binary or memory string: 6V!/etc/qemu-binfmt/mipsel
Source: na.elf, 6283.1.00007ffe53e16000.00007ffe53e37000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mipsel
Source: na.elf, 6283.1.00007ffe53e16000.00007ffe53e37000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-mipsel/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
38.54.57.248
 f.codingdrunk.cc United States
174 COGENT-174US true
156.244.16.207
 75cents.libre Seychelles
132839 POWERLINE-AS-APPOWERLINEDATACENTERHK true
154.205.144.234
 imaverygoodbadboy.libre Seychelles
26484 IKGUL-26484US true
154.90.62.142
 krddnsnet.dyn Seychelles
40065 CNSERVERSUS true
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
156.244.7.75
 2joints.libre Seychelles
132839 POWERLINE-AS-APPOWERLINEDATACENTERHK true
154.223.21.228
 r3racegame.indy Seychelles
134705 ITACE-AS-APItaceInternationalLimitedHK true
38.60.249.66
 nineteen.libre United States
174 COGENT-174US true
38.60.198.180
 ru.coziest.lol United States
174 COGENT-174US true
91.189.91.43
 unknown United Kingdom
41231 CANONICAL-ASGB false
91.189.91.42
 unknown United Kingdom
41231 CANONICAL-ASGB false

Contacted Domains

Name IP Active
75cents.libre 156.244.16.207 true
nineteen.libre 38.60.249.66 true
ru.coziest.lol 38.60.198.180 true
f.codingdrunk.cc 38.54.57.248 true
r3racegame.indy 154.223.21.228 true
krddnsnet.dyn 154.90.62.142 true
2joints.libre 156.244.7.75 true
eighteen.pirate 38.60.249.66 true
kr3ddnsnet1.indy 154.223.21.228 true
kr2ddnsnet.dyn 154.90.62.142 true
imaverygoodbadboy.libre 154.205.144.234 true
subcarrace.indy 154.223.21.228 true
nineteen.libre. [malformed] unknown unknown
fortyfivehundred.dyn. [malformed] unknown unknown
kr3ddnsnet1.indy. [malformed] unknown unknown
75cents.libre. [malformed] unknown unknown
2joints.libre. [malformed] unknown unknown
subcarrace.indy. [malformed] unknown unknown
kr2ddnsnet.dyn. [malformed] unknown unknown
r3racegame.indy. [malformed] unknown unknown
krddnsnet.dyn. [malformed] unknown unknown
21savage.dyn. [malformed] unknown unknown
ru.coziest.lol. [malformed] unknown unknown