Linux Analysis Report
arm7.elf

Overview

General Information

Sample name: arm7.elf
Analysis ID: 1544700
MD5: 55db624df3b7e325c3f9ab2e36a591f7
SHA1: fb49057e48b5cbc3ac50c9228dbf6a0b0bf327d7
SHA256: 540fb32d2ed2dc69ee851f29d4744da2aa746568e11511623468846d9551691d
Tags: elfMiraiuser-abuse_ch
Infos:

Detection

Mirai
Score: 84
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Contains symbols with names commonly found in malware
Sample and/or dropped files contains symbols with suspicious names
Sample listens on a socket
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

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: arm7.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: arm7.elf ReversingLabs: Detection: 71%
Sample listens on a socket
Source: /tmp/arm7.elf (PID: 5529) Socket: 127.0.0.1:63841 Jump to behavior
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com

System Summary
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Malicious sample detected (through community Yara rule)
Source: arm7.elf, type: SAMPLE Matched rule: Detects ELF malware Mirai related Author: Florian Roth
Source: 5529.1.00007f411c017000.00007f411c02b000.r-x.sdmp, type: MEMORY Matched rule: Detects ELF malware Mirai related Author: Florian Roth
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_app.c.c
Source: ELF static info symbol of initial sample Name: attack_app_http
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_gre.c
Source: ELF static info symbol of initial sample Name: attack_gre_eth
Source: ELF static info symbol of initial sample Name: attack_gre_ip
Source: ELF static info symbol of initial sample Name: attack_init
Sample and/or dropped files contains symbols with suspicious names
Source: arm7.elf ELF static info symbol of initial sample: __gnu_unwind_execute
Source: arm7.elf ELF static info symbol of initial sample: scanner.c
Yara signature match
Source: arm7.elf, type: SAMPLE Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
Source: 5529.1.00007f411c017000.00007f411c02b000.r-x.sdmp, type: MEMORY Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
Source: classification engine Classification label: mal84.troj.linELF@0/0@2/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/arm7.elf (PID: 5529) Queries kernel information via 'uname': Jump to behavior
Source: arm7.elf, 5529.1.000055deef88c000.000055deef9ba000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm7.elf, 5529.1.000055deef88c000.000055deef9ba000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: arm7.elf, 5529.1.00007ffd4759c000.00007ffd475bd000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: arm7.elf, 5529.1.00007ffd4759c000.00007ffd475bd000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/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/arm7.elf
Source: arm7.elf, 5529.1.00007ffd4759c000.00007ffd475bd000.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: arm7.elf, type: SAMPLE
Source: Yara match File source: 5529.1.00007f411c017000.00007f411c02b000.r-x.sdmp, type: MEMORY

Remote Access Functionality
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Yara detected Mirai
Source: Yara match File source: arm7.elf, type: SAMPLE
Source: Yara match File source: 5529.1.00007f411c017000.00007f411c02b000.r-x.sdmp, type: MEMORY

No Screenshots

⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true