Edit tour

Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1530604
MD5:	521069251bdce0fbd37497b8f527ab23
SHA1:	020730190edde76dec3de9678351aa6e65ab91bf
SHA256:	aa5db395352aff621bc290b0eb2f7715230f93556ac99cc056cd22a56a5adc72
Tags:	elfuser-abuse_ch

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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:	1530604
Start date and time:	2024-10-10 10:27:03 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 19s
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:	na.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0

Warnings

VT rate limit hit for: na.elf

Runtime Messages

Command:	/tmp/na.elf
PID:	5490
Exit Code:	1
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 5490, Parent: 5416, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/na.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

Multi AV Scanner detection for submitted file

Source: na.elf

ReversingLabs: Detection: 15%

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal48.linELF@0/0@0/0

Source: /tmp/na.elf (PID: 5490)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 5490.1.0000563a6ff7e000.0000563a700ac000.rw-.sdmp	Binary or memory string: o:V!/etc/qemu-binfmt/arm
Source: na.elf, 5490.1.00007ffed0afd000.00007ffed0b1e000.rw-.sdmp	Binary or memory string: wx86_64/usr/bin/qemu-arm/tmp/na.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/na.elf
Source: na.elf, 5490.1.0000563a6ff7e000.0000563a700ac000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 5490.1.00007ffed0afd000.00007ffed0b1e000.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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
na.elf	16%	ReversingLabs	Linux.Backdoor.Mirai

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, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.944448987476243
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	55'216 bytes
MD5:	521069251bdce0fbd37497b8f527ab23
SHA1:	020730190edde76dec3de9678351aa6e65ab91bf
SHA256:	aa5db395352aff621bc290b0eb2f7715230f93556ac99cc056cd22a56a5adc72
SHA512:	09e176cdbcb48370c273ea4733d1c0c8f64625f2070ab7742b929268d5cb6bd97d091c884223777ccd0877209d65db1c8d56adaf3063d7fcfc9f44e127649f70
SSDEEP:	1536:W1nmnh8TEnFJM9gCU7a1RRqjll/LiF8/z9/9:cEnrIgCU7a1Roo87j
TLSH:	F843F94BFD81AB01E4D921B9FE5E114E33135B6CE3EE72019E155B256BC796B0F3A802
File Content Preview:	.ELF..............(.........4...0.......4. ...(........p.....Q...Q.......................................................................@..........................................Q.td..................................-...L..................@-.,@...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:	0x8194
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	5
Section Header Offset:	54576
Section Header Size:	40
Number of Section Headers:	16
Header String Table Index:	15

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0
.init	PROGBITS	0x80d4	0xd4	0x10	0x0	0x6	AX	0	4
.text	PROGBITS	0x80f0	0xf0	0xc9a0	0x0	0x6	AX	0	16
.fini	PROGBITS	0x14a90	0xca90	0x10	0x0	0x6	AX	0	4
.rodata	PROGBITS	0x14aa0	0xcaa0	0x6c8	0x0	0x2	A	0	4
.ARM.extab	PROGBITS	0x15168	0xd168	0x18	0x0	0x2	A	0	4
.ARM.exidx	ARM_EXIDX	0x15180	0xd180	0x118	0x0	0x82	AL	2	4
.eh_frame	PROGBITS	0x1d298	0xd298	0x4	0x0	0x3	WA	0	4
.tbss	NOBITS	0x1d29c	0xd29c	0x8	0x0	0x403	WAT	0	4
.init_array	INIT_ARRAY	0x1d29c	0xd29c	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x1d2a0	0xd2a0	0x4	0x0	0x3	WA	0	4
.got	PROGBITS	0x1d2a8	0xd2a8	0xa8	0x4	0x3	WA	0	4
.data	PROGBITS	0x1d350	0xd350	0x144	0x0	0x3	WA	0	4
.bss	NOBITS	0x1d494	0xd494	0x3eb0	0x0	0x3	WA	0	4
.ARM.attributes	ARM_ATTRIBUTES	0x0	0xd494	0x16	0x0	0x0		0	1
.shstrtab	STRTAB	0x0	0xd4aa	0x83	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
EXIDX	0xd180	0x15180	0x15180	0x118	0x118	4.4890	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0xd298	0xd298	5.9772	0x5	R E	0x8000	.init .text .fini .rodata .ARM.extab .ARM.exidx
LOAD	0xd298	0x1d298	0x1d298	0x1fc	0x40ac	2.4952	0x6	RW	0x8000	.eh_frame .tbss .init_array .fini_array .got .data .bss
TLS	0xd29c	0x1d29c	0x1d29c	0x0	0x8	0.0000	0x4	R	0x4	.tbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: na.elf PID: 5490, Parent PID: 5416

General

Start time (UTC):	08:27:47
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report na.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

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

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: na.elf PID: 5490, Parent PID: 5416

General

Chronological Activities

Linux Analysis Report
na.elf