Edit tour

Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1532156
MD5:	820b17fe1fe742c2c771e5bff5599f49
SHA1:	7fb69b1711a641b68096a8e4850121ea97037fbb
SHA256:	2e62dfa29a48eed1a3838bd309f3890e1efb08e07ef1e484fa1aec0460c7fe90
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	64
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected Mirai

Detected TCP or UDP traffic on non-standard ports

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:	41.0.0 Charoite
Analysis ID:	1532156
Start date and time:	2024-10-12 17:08:16 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 28s
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:	mal64.troj.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/na.elf
PID:	5460
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 5460, Parent: 5380, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/na.elf

na.elf New Fork (PID: 5462, Parent: 5460)

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
na.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5460.1.00007fd9bc400000.00007fd9bc411000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

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: na.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: na.elf

Virustotal: Detection: 61%

Perma Link

Source: global traffic

TCP traffic: 192.168.2.13:59576 -> 194.120.116.148:5555

Source: /tmp/na.elf (PID: 5460)

Socket: 127.0.0.1:20905

Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148
Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148
Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148
Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148
Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148
Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148
Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148
Source: unknown	TCP traffic detected without corresponding DNS query: 194.120.116.148

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal64.troj.linELF@0/0@0/0

Source: /tmp/na.elf (PID: 5460)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 5460.1.00007ffe421f8000.00007ffe42219000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips/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, 5460.1.00005557e1689000.00005557e1710000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: na.elf, 5460.1.00007ffe421f8000.00007ffe42219000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: na.elf, 5460.1.00005557e1689000.00005557e1710000.rw-.sdmp	Binary or memory string: WU!/etc/qemu-binfmt/mips

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: na.elf, type: SAMPLE
Source: Yara match	File source: 5460.1.00007fd9bc400000.00007fd9bc411000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: na.elf, type: SAMPLE
Source: Yara match	File source: 5460.1.00007fd9bc400000.00007fd9bc411000.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	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	1 Non-Standard Port	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	62%	Virustotal		Browse
na.elf	100%	Avira	EXP/ELF.Mirai.H

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. 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
194.120.116.148	unknown	unknown		207451	AGROSVITUA	false

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AGROSVITUA	na.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	na.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	na.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	na.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	na.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	na.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	jydeTkHxMv.elf	Get hash	malicious	Unknown	Browse	45.155.165.18
	firmware.armv4l.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	firmware.armv5l.elf	Get hash	malicious	Unknown	Browse	194.120.116.196
	firmware.armv7l.elf	Get hash	malicious	Unknown	Browse	194.120.116.196

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 MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.420606112972339
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	71'856 bytes
MD5:	820b17fe1fe742c2c771e5bff5599f49
SHA1:	7fb69b1711a641b68096a8e4850121ea97037fbb
SHA256:	2e62dfa29a48eed1a3838bd309f3890e1efb08e07ef1e484fa1aec0460c7fe90
SHA512:	67354de438cbf52bc562c31e32e2ecdbfefffa33defc1e38372e2077bcc9b6b8045fb367c156ca306f592fb363039d6172047c8e56b6a82c666abc840a040d55
SSDEEP:	768:RzZWyvL5MsRXxPx2pqV2U8z9HX8iJ3GecFgoSERFImpPxs6vvSp+ozXeyt42egHO:OKzPxkqV2UuGecFgoSWlHs6t0egwsnM
TLSH:	B963964D3E319FACFBA8463457F39E20A35823D526E1CA85E19CDA011F7034E645FBA9
File Content Preview:	.ELF.....................@.`...4.........4. ...(.............@...@...........................E...E.....P..*P........dt.Q............................<...'..\...!'.......................<...'..8...!... ....'9... ......................<...'......!........'9.

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	MIPS R3000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x400260
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	71336
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	0x400094	0x94	0x8c	0x0	0x6	AX	4
.text	PROGBITS	0x400120	0x120	0xee90	0x0	0x6	AX	16
.fini	PROGBITS	0x40efb0	0xefb0	0x5c	0x0	0x6	AX	4
.rodata	PROGBITS	0x40f010	0xf010	0x1670	0x0	0x2	A	16
.ctors	PROGBITS	0x451000	0x11000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x451008	0x11008	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x451020	0x11020	0x2e0	0x0	0x3	WA	16
.got	PROGBITS	0x451300	0x11300	0x350	0x4	0x10000003	WAp	16
.sbss	NOBITS	0x451650	0x11650	0xc	0x0	0x10000003	WAp	4
.bss	NOBITS	0x451660	0x11650	0x23f0	0x0	0x3	WA	16
.mdebug.abi32	PROGBITS	0x7bc	0x11650	0x0	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x11650	0x57	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x400000	0x400000	0x10680	0x10680	5.5884	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x11000	0x451000	0x451000	0x650	0x2a50	3.2297	0x6	RW	0x10000	.ctors .dtors .data .got .sbss .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
Oct 12, 2024 17:09:10.005136013 CEST	59576	5555	192.168.2.13	194.120.116.148
Oct 12, 2024 17:09:10.010580063 CEST	5555	59576	194.120.116.148	192.168.2.13
Oct 12, 2024 17:09:10.010660887 CEST	59576	5555	192.168.2.13	194.120.116.148
Oct 12, 2024 17:09:10.022917986 CEST	59576	5555	192.168.2.13	194.120.116.148
Oct 12, 2024 17:09:10.027944088 CEST	5555	59576	194.120.116.148	192.168.2.13
Oct 12, 2024 17:09:10.028300047 CEST	59576	5555	192.168.2.13	194.120.116.148
Oct 12, 2024 17:09:10.033248901 CEST	5555	59576	194.120.116.148	192.168.2.13
Oct 12, 2024 17:09:20.033298016 CEST	59576	5555	192.168.2.13	194.120.116.148
Oct 12, 2024 17:09:20.038475037 CEST	5555	59576	194.120.116.148	192.168.2.13
Oct 12, 2024 17:09:20.219499111 CEST	5555	59576	194.120.116.148	192.168.2.13
Oct 12, 2024 17:09:20.219926119 CEST	59576	5555	192.168.2.13	194.120.116.148
Oct 12, 2024 17:10:20.273060083 CEST	59576	5555	192.168.2.13	194.120.116.148
Oct 12, 2024 17:10:20.277949095 CEST	5555	59576	194.120.116.148	192.168.2.13
Oct 12, 2024 17:10:20.452236891 CEST	5555	59576	194.120.116.148	192.168.2.13
Oct 12, 2024 17:10:20.452366114 CEST	59576	5555	192.168.2.13	194.120.116.148

System Behavior

Analysis Process: na.elf PID: 5460, Parent PID: 5380

General

Start time (UTC):	15:09:08
Start date (UTC):	12/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

Chronological Activities

Analysis Process: na.elf PID: 5462, Parent PID: 5460

General

Start time (UTC):	15:09:09
Start date (UTC):	12/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

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 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

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

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

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

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

System Behavior

Analysis Process: na.elf PID: 5460, Parent PID: 5380

General

Chronological Activities

Analysis Process: na.elf PID: 5462, Parent PID: 5460

General

Chronological Activities

Linux Analysis Report
na.elf