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Linux Analysis Report
arm.elf

Overview

General Information

Sample name:	arm.elf
Analysis ID:	1541787
MD5:	651bc844350d18dbdaa08b6f4b38e22a
SHA1:	82740f7649730f6382bea4aa154be82cb586386b
SHA256:	9a7114b2c370104c060c004f406e120d12533fd4c398db93301bb8251c9a5ef0
Tags:	elfuser-abuse_ch

Detection

Score:	1
Range:	0 - 100
Whitelisted:	false

Signatures

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:	1541787
Start date and time:	2024-10-25 06:28:13 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 26s
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:	arm.elf
Detection:	CLEAN
Classification:	clean1.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/arm.elf
PID:	5528
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

arm.elf (PID: 5528, Parent: 5446, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm.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

There are no malicious signatures, click here to show all signatures.

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: clean1.linELF@0/0@0/0

Source: /tmp/arm.elf (PID: 5528)

Queries kernel information via 'uname':

Jump to behavior

Source: arm.elf, 5528.1.0000559feda99000.0000559fedbc7000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm.elf, 5528.1.00007ffd0036b000.00007ffd0038c000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm.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/arm.elf
Source: arm.elf, 5528.1.0000559feda99000.0000559fedbc7000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm.elf, 5528.1.00007ffd0036b000.00007ffd0038c000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

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	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features

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
arm.elf	5%	ReversingLabs

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

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, version 1 (ARM), statically linked, stripped
Entropy (8bit):	6.016572629011332
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm.elf
File size:	50'412 bytes
MD5:	651bc844350d18dbdaa08b6f4b38e22a
SHA1:	82740f7649730f6382bea4aa154be82cb586386b
SHA256:	9a7114b2c370104c060c004f406e120d12533fd4c398db93301bb8251c9a5ef0
SHA512:	91ce04b02b45d9eba18c0ca4b22f9f89102f9f4ecb3ed3e8b61a53f08089c770bdd6064db783257db57344a2465f30166e87c57672e93836c6a0e2dc3ef8794e
SSDEEP:	768:mhzt7eKWZsvu+JdPiUhkN6CFjrd2mA5ZZnSLCgBMvqKD7u0AR0pv7Ii:gWmvlJV9hkBFPd2PTZnSLRByu0AR4v7
TLSH:	60332A46FA855B13D5C1A5BBFF0E1289772B4B5CE1FA73425929AF2133834760E3B242
File Content Preview:	.ELF...a..........(.........4...........4. ...(.....................D...D....................@...@..t....&..........Q.td..................................-...L."...\+..........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:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	49892
Section Header Size:	40
Number of Section Headers:	13
Header String Table Index:	12

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	0xada8	0x0	0x6	AX	16
.fini	PROGBITS	0x12e58	0xae58	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x12e6c	0xae6c	0x10d8	0x0	0x2	A	4
.eh_frame	PROGBITS	0x14000	0xc000	0x4	0x0	0x3	WA	4
.ctors	PROGBITS	0x14004	0xc004	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x1400c	0xc00c	0x8	0x0	0x3	WA	4
.jcr	PROGBITS	0x14014	0xc014	0x4	0x0	0x3	WA	4
.data	PROGBITS	0x14018	0xc018	0x25c	0x0	0x3	WA	4
.bss	NOBITS	0x14274	0xc274	0x2440	0x0	0x3	WA	4
.ARM.attributes	ARM_ATTRIBUTES	0x0	0xc274	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0xc284	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	0xbf44	0xbf44	6.0679	0x5	R E	0x1000	.init .text .fini .rodata
LOAD	0xc000	0x14000	0x14000	0x274	0x26b4	3.4041	0x6	RW	0x1000	.eh_frame .ctors .dtors .jcr .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: arm.elf PID: 5528, Parent PID: 5446

General

Start time (UTC):	04:29:02
Start date (UTC):	25/10/2024
Path:	/tmp/arm.elf
Arguments:	/tmp/arm.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Linux Analysis Report arm.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

System Summary

Malware Analysis System Evasion

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

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

System Behavior

Analysis Process: arm.elf PID: 5528, Parent PID: 5446

General

Chronological Activities

Linux Analysis Report
arm.elf