Linux Analysis Report
arm4.elf

Overview

General Information

Sample name: arm4.elf
Analysis ID: 1527382
MD5: 9ed946c62489e261cc2c8b0ffda9b7b0
SHA1: 94411b69d65d5fa28c81497441aac6fe01d72adf
SHA256: e9cb9811bed65876bfbb617db1ebb4c19b711a05cbee6ec91587a9d38771aed7
Tags: user-elfdigest
Infos:

Detection

Mirai
Score: 64
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Mirai
Enumerates processes within the "proc" file system
Sample has stripped symbol table
Sample listens on a socket
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: arm4.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm4.elf ReversingLabs: Detection: 44%
Sample listens on a socket
Source: /tmp/arm4.elf (PID: 5824) Socket: 127.0.0.1:1172 Jump to behavior
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@0/0
Enumerates processes within the "proc" file system
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6032/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6031/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6034/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6033/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5980/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6036/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5981/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6035/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5982/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6016/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6038/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5983/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6015/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6037/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6030/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5918/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5973/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6029/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5974/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6028/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5975/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5976/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5911/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5977/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5978/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5979/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6042/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5890/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6025/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6024/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6027/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5972/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6026/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6041/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6040/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5984/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5985/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6017/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/6039/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5667/cmdline Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5986/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5987/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5828) File opened: /proc/5889/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6032/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6031/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6034/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6033/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5980/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6036/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5981/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6035/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5982/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6016/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6038/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5983/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6015/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6037/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6030/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5973/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6029/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5974/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6028/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5975/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5976/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5977/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5978/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5979/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6042/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6025/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6024/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5971/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6027/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5972/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6026/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6041/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6040/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/1/cmdline Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/2/cmdline Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5984/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5985/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6017/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/6039/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5667/cmdline Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5986/status Jump to behavior
Source: /tmp/arm4.elf (PID: 5889) File opened: /proc/5987/status Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm4.elf (PID: 5824) Queries kernel information via 'uname': Jump to behavior
Source: arm4.elf, 5824.1.00007ffc75fc2000.00007ffc75fe3000.rw-.sdmp, arm4.elf, 5827.1.00007ffc75fc2000.00007ffc75fe3000.rw-.sdmp, arm4.elf, 5890.1.00007ffc75fc2000.00007ffc75fe3000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm4.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/arm4.elf
Source: arm4.elf, 5824.1.000055da8beac000.000055da8c022000.rw-.sdmp, arm4.elf, 5827.1.000055da8beac000.000055da8c022000.rw-.sdmp, arm4.elf, 5890.1.000055da8beac000.000055da8c022000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm4.elf, 5824.1.000055da8beac000.000055da8c022000.rw-.sdmp, arm4.elf, 5827.1.000055da8beac000.000055da8c022000.rw-.sdmp, arm4.elf, 5890.1.000055da8beac000.000055da8c022000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm4.elf, 5824.1.00007ffc75fc2000.00007ffc75fe3000.rw-.sdmp, arm4.elf, 5827.1.00007ffc75fc2000.00007ffc75fe3000.rw-.sdmp, arm4.elf, 5890.1.00007ffc75fc2000.00007ffc75fe3000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm4.elf, 5890.1.00007ffc75fc2000.00007ffc75fe3000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: arm4.elf, type: SAMPLE
Source: Yara match File source: 5824.1.00007ff814017000.00007ff81402c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5827.1.00007ff814017000.00007ff81402c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5890.1.00007ff814017000.00007ff81402c000.r-x.sdmp, type: MEMORY

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm4.elf, type: SAMPLE
Source: Yara match File source: 5824.1.00007ff814017000.00007ff81402c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5827.1.00007ff814017000.00007ff81402c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5890.1.00007ff814017000.00007ff81402c000.r-x.sdmp, type: MEMORY

No Screenshots

⊘No contacted IP infos