Linux Analysis Report
boatnet.arm7.elf

Overview

General Information

Sample name: boatnet.arm7.elf
Analysis ID: 1592298
MD5: acb0ec9f61f5eaa34e0fa99f646cae84
SHA1: b2046dec240f3ddca7ee9031bdca4a4f42b0fc81
SHA256: 628519a70b314f6aad29a56d20a5bd436e993129779bd3626b428ad76d66d355
Tags: elfuser-abuse_ch
Infos:

Detection

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

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Gafgyt
Yara detected Mirai
Sample is packed with UPX
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

Classification

Name Description Attribution Blogpost URLs Link
Bashlite, Gafgyt Bashlite is a malware family which infects Linux systems in order to launch distributed denial-of-service attacks (DDoS). Originally it was also known under the name Bashdoor, but this term now refers to the exploit method used by the malware. It has been used to launch attacks of up to 400 Gbps. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.bashlite
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
Multi AV Scanner detection for submitted file
Source: boatnet.arm7.elf Virustotal: Detection: 38% Perma Link
Source: boatnet.arm7.elf ReversingLabs: Detection: 34%
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
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://5.181.159.16/c.sh;
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://5.181.159.16/idk/home.arm7;chmod
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://5.181.159.16/idk/home.mips
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://5.181.159.16/idk/home.mips;
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://5.181.159.16/idk/home.x86
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://5.181.159.16/w.sh;
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://5.181.159.16/wget.sh;
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: boatnet.arm7.elf, 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/
Source: boatnet.arm7.elf String found in binary or memory: http://upx.sf.net

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: boatnet.arm7.elf PID: 5425, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: boatnet.arm7.elf PID: 5425, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Sample contains only a LOAD segment without any section mappings
Source: LOAD without section mappings Program segment: 0x8000
Yara signature match
Source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: Process Memory Space: boatnet.arm7.elf PID: 5425, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: boatnet.arm7.elf PID: 5425, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: classification engine Classification label: mal84.troj.evad.linELF@0/0@2/0

Data Obfuscation
barindex
Sample is packed with UPX
Source: initial sample String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample String containing UPX found: $Id: UPX 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $
ELF contains segments with high entropy indicating compressed/encrypted content
Source: boatnet.arm7.elf Submission file: segment LOAD with 7.973 entropy (max. 8.0)
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/boatnet.arm7.elf (PID: 5425) Queries kernel information via 'uname': Jump to behavior
Source: boatnet.arm7.elf, 5425.1.0000558ffb632000.0000558ffb800000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: boatnet.arm7.elf, 5425.1.00007fff740f5000.00007fff74116000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/boatnet.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/boatnet.arm7.elf
Source: boatnet.arm7.elf, 5425.1.0000558ffb632000.0000558ffb800000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: boatnet.arm7.elf, 5425.1.00007fff740f5000.00007fff74116000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: boatnet.arm7.elf, 5425.1.00007fff740f5000.00007fff74116000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
barindex
Yara detected Gafgyt
Source: Yara match File source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY
Yara detected Mirai
Source: Yara match File source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: boatnet.arm7.elf PID: 5425, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Gafgyt
Source: Yara match File source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY
Yara detected Mirai
Source: Yara match File source: 5425.1.00007f14f0017000.00007f14f0036000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: boatnet.arm7.elf PID: 5425, type: MEMORYSTR

No Screenshots

⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true