Linux Analysis Report
Josho.arm7.elf

Overview

General Information

Sample name: Josho.arm7.elf
Analysis ID: 1546867
MD5: 347fc8e2607d34e192ab144bfeab8a83
SHA1: cd32af7a5842e66a8dafe2f3b9840e92822f73f2
SHA256: 1094058dedfd00ae067f0b452f180bc30e39615a69e65caf736983aaeb416ec3
Tags: elfuser-abuse_ch
Infos:

Detection

Mirai
Score: 68
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Mirai
Contains symbols with names commonly found in malware
Detected TCP or UDP traffic on non-standard ports
Sample and/or dropped files contains symbols with suspicious names
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

Name Description Attribution Blogpost URLs Link
Mirai Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: Josho.arm7.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: Josho.arm7.elf ReversingLabs: Detection: 71%
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.13:59592 -> 95.164.4.65:666
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65
Source: unknown TCP traffic detected without corresponding DNS query: 95.164.4.65

System Summary
barindex
Contains symbols with names commonly found in malware
Source: ELF static info symbol of initial sample Name: attack.c
Source: ELF static info symbol of initial sample Name: attack_get_opt_int
Source: ELF static info symbol of initial sample Name: attack_get_opt_ip
Source: ELF static info symbol of initial sample Name: attack_get_opt_str
Source: ELF static info symbol of initial sample Name: attack_icmpecho
Source: ELF static info symbol of initial sample Name: attack_init
Source: ELF static info symbol of initial sample Name: attack_method.c
Source: ELF static info symbol of initial sample Name: attack_method_bypass
Source: ELF static info symbol of initial sample Name: attack_method_greeth
Source: ELF static info symbol of initial sample Name: attack_method_greip
Sample and/or dropped files contains symbols with suspicious names
Source: Josho.arm7.elf ELF static info symbol of initial sample: __gnu_unwind_execute
Source: classification engine Classification label: mal68.troj.linELF@0/0@0/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/Josho.arm7.elf (PID: 5441) Queries kernel information via 'uname': Jump to behavior
Source: Josho.arm7.elf, 5441.1.00007ffd7b7fe000.00007ffd7b81f000.rw-.sdmp, Josho.arm7.elf, 5443.1.00007ffd7b7fe000.00007ffd7b81f000.rw-.sdmp, Josho.arm7.elf, 5447.1.00007ffd7b7fe000.00007ffd7b81f000.rw-.sdmp Binary or memory string: /x86_64/usr/bin/qemu-arm/tmp/Josho.arm7.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/Josho.arm7.elf
Source: Josho.arm7.elf, 5441.1.0000556338241000.0000556338392000.rw-.sdmp, Josho.arm7.elf, 5443.1.0000556338241000.000055633836f000.rw-.sdmp, Josho.arm7.elf, 5447.1.0000556338241000.000055633836f000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: Josho.arm7.elf, 5441.1.00007ffd7b7fe000.00007ffd7b81f000.rw-.sdmp, Josho.arm7.elf, 5443.1.00007ffd7b7fe000.00007ffd7b81f000.rw-.sdmp, Josho.arm7.elf, 5447.1.00007ffd7b7fe000.00007ffd7b81f000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: Josho.arm7.elf, 5441.1.0000556338241000.0000556338392000.rw-.sdmp, Josho.arm7.elf, 5443.1.0000556338241000.000055633836f000.rw-.sdmp, Josho.arm7.elf, 5447.1.0000556338241000.000055633836f000.rw-.sdmp Binary or memory string: %8cU!/etc/qemu-binfmt/arm

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: Josho.arm7.elf, type: SAMPLE

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: Josho.arm7.elf, type: SAMPLE

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
95.164.4.65
 unknown Gibraltar
29632 NASSIST-ASGI false