Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1532103
MD5: d062a77a1be285a30ebf7e4efc908ff4
SHA1: 53da932743d4fa7e9430903c5fe4ba640e3a62a0
SHA256: 8f594e066e46872c10e71f57826dd61904ff84aac75256b479176281455de520
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 56
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
ELF contains segments with high entropy indicating compressed/encrypted content
Executes the "rm" command used to delete files or directories
Sample contains only a LOAD segment without any section mappings
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: 43%
Source: na.elf Virustotal: Detection: 45% Perma Link
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.23:33606 version: TLS 1.2
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: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
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 Network traffic detected: HTTP traffic on port 443 -> 33606
Source: unknown Network traffic detected: HTTP traffic on port 33606 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.23:33606 version: TLS 1.2
Sample contains only a LOAD segment without any section mappings
Source: LOAD without section mappings Program segment: 0x100000
Source: classification engine Classification label: mal56.linELF@0/0@0/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 6265) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.PFXmteLXOf /tmp/tmp.aEFs07lvwW /tmp/tmp.N9haWn11fV Jump to behavior
Source: /usr/bin/dash (PID: 6274) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.PFXmteLXOf /tmp/tmp.aEFs07lvwW /tmp/tmp.N9haWn11fV Jump to behavior
ELF contains segments with high entropy indicating compressed/encrypted content
Source: na.elf Submission file: segment LOAD with 7.9961 entropy (max. 8.0)
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 6213) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 6213.1.00007ffc54330000.00007ffc54351000.rw-.sdmp Binary or memory string: x86_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
Source: na.elf, 6213.1.00005634df32c000.00005634df3b3000.rw-.sdmp Binary or memory string: 4V!/etc/qemu-binfmt/mips
Source: na.elf, 6213.1.00005634df32c000.00005634df3b3000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mips
Source: na.elf, 6213.1.00007ffc54330000.00007ffc54351000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mips
Source: na.elf, 6213.1.00007ffc54330000.00007ffc54351000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

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
54.171.230.55
 unknown United States
16509 AMAZON-02US 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