Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1532426
MD5: 770b122bf160cda69dd22e238354d438
SHA1: 65850dd67ddf5ca463e7c941f76e602faa9ec36a
SHA256: 223a9199331628f87799574474064cba9ce63ea82d450c332065d71fe24db053
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 48
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Detected TCP or UDP traffic on non-standard ports
Found strings indicative of a multi-platform dropper
Sample and/or dropped files contains symbols with suspicious names
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: 36%
Source: na.elf Virustotal: Detection: 20% Perma Link
Found strings indicative of a multi-platform dropper
Source: na.elf String: /lib//sbin//usr//proc//exeself/fd/fd/socket:/proc/proc//exewgetcurlftpmountabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/proc/net/tcp/proc//exe/fd//proc//maps/lib/usr/lib
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:57942 -> 138.124.30.253:9583
Sample listens on a socket
Source: /tmp/na.elf (PID: 6256) Socket: 127.0.0.1:45295 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: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 138.124.30.253
Source: unknown TCP traffic detected without corresponding DNS query: 138.124.30.253
Source: unknown TCP traffic detected without corresponding DNS query: 138.124.30.253
Source: unknown TCP traffic detected without corresponding DNS query: 138.124.30.253
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: 109.202.202.202
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: 138.124.30.253
Source: unknown TCP traffic detected without corresponding DNS query: 138.124.30.253
Source: global traffic DNS traffic detected: DNS query: dvrhelpers.su
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample and/or dropped files contains symbols with suspicious names
Source: na.elf ELF static info symbol of initial sample: __gnu_unwind_execute
Source: classification engine Classification label: mal48.linELF@0/498@1/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 6256) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 6256.1.00007ffcbba9b000.00007ffcbbabc000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/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, 6256.1.000055c3cff45000.000055c3d00b3000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: na.elf, 6256.1.000055c3cff45000.000055c3d00b3000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 6256.1.00007ffcbba9b000.00007ffcbbabc000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: na.elf, 6256.1.00007ffcbba9b000.00007ffcbbabc000.rw-.sdmp Binary or memory string: /tmp/qemu-open.ELkuSe
Source: na.elf, 6256.1.00007ffcbba9b000.00007ffcbbabc000.rw-.sdmp Binary or memory string: U/tmp/qemu-open.ELkuSe:

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
138.124.30.253
 unknown Norway
8983 NOKIA-ASFI false
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
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
dvrhelpers.su unknown unknown