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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1532517
MD5:	6f13045fb6dca87dcfa361271d1c89cf
SHA1:	1620bb2352143c5acb4ae90980087ece953ca7ff
SHA256:	f792c88aedc3edc88a03e66dffbadca370c4219d2b98e4f4c5ce37400388f3b3
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	2
Range:	0 - 100
Whitelisted:	false

Signatures

Detected TCP or UDP traffic on non-standard ports

Found strings indicative of a multi-platform dropper

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:	1532517
Start date and time:	2024-10-13 15:23:53 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 22s
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:	CLEAN
Classification:	clean2.linELF@0/0@3/0

Runtime Messages

Command:	/tmp/na.elf
PID:	5782
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	thIs wEek on xLaB lEarNs nOthinG xd
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 5782, Parent: 5708, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/na.elf

na.elf New Fork (PID: 5784, Parent: 5782)

na.elf New Fork (PID: 5787, Parent: 5782)

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: na.elf	String: ash\|login\|wget\|curl\|tftp\|ntpdate
Source: na.elf	String: /proc//exe\|ash\|login\|wget\|curl\|tftp\|ntpdate/fdsocket\|proc/usr/bin/usr/sbin/system/mnt/mtd/app/org/z/zbin/home/app/dvr/bin/duksan/userfs/mnt/app/usr/etc/dvr/main/usr/local/var/bin/tmp/sqfs/z/bin/dvr/mnt/mtd/zconf/gm/bin/home/process/var/challenge/usr/lib/lib/systemd//usr/lib/systemd/system/system/bin//mnt//home/helper/home/davinci/usr/libexec//sbin//bin/

Source: global traffic

TCP traffic: 192.168.2.15:53616 -> 38.60.249.66:7193

Source: /tmp/na.elf (PID: 5782)

Socket: 127.0.0.1:1234

Jump to behavior

Source: unknown

UDP traffic detected without corresponding DNS query: 161.97.219.84

Source: global traffic	DNS traffic detected: DNS query: eighteen.pirate
Source: global traffic	DNS traffic detected: DNS query: daisy.ubuntu.com

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: clean2.linELF@0/0@3/0

Source: /tmp/na.elf (PID: 5782)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 5782.1.00007ffc079a3000.00007ffc079c4000.rw-.sdmp	Binary or memory string: x86_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, 5782.1.000055b3eb32a000.000055b3eb478000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: na.elf, 5782.1.000055b3eb32a000.000055b3eb478000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 5782.1.00007ffc079a3000.00007ffc079c4000.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	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-Standard Port	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	1 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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

⊘No Antivirus matches

Dropped Files

⊘No Antivirus matches

Domains

Source	Detection	Scanner	Label	Link
daisy.ubuntu.com	0%	Virustotal		Browse

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	0%, Virustotal, Browse	unknown
eighteen.pirate	38.60.249.66	true	false		unknown

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
38.60.249.66	eighteen.pirate	United States		174	COGENT-174US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
38.60.249.66	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	GfPpov52Oc.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm5.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	arm6.elf	Get hash	malicious	Mirai, Moobot	Browse	162.213.35.24
	debug.dbg.elf	Get hash	malicious	Mirai, Moobot	Browse	162.213.35.25
	0h7AeM6QgB.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
eighteen.pirate	na.elf	Get hash	malicious	Unknown	Browse	38.60.249.66
	na.elf	Get hash	malicious	Unknown	Browse	38.60.249.66
	na.elf	Get hash	malicious	Unknown	Browse	38.60.249.66
	na.elf	Get hash	malicious	Unknown	Browse	38.60.249.66
	na.elf	Get hash	malicious	Mirai	Browse	38.60.249.66
	na.elf	Get hash	malicious	Unknown	Browse	38.60.249.66

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
COGENT-174US	na.elf	Get hash	malicious	Unknown	Browse	38.60.249.66
	debug.dbg.elf	Get hash	malicious	Mirai, Moobot	Browse	204.243.128.148
	SecuriteInfo.com.Win32.TrojanX-gen.16449.26967.exe	Get hash	malicious	Unknown	Browse	149.104.74.87
	SecuriteInfo.com.Win32.TrojanX-gen.16449.26967.exe	Get hash	malicious	Unknown	Browse	38.54.26.75
	m0mg1WH7Su.elf	Get hash	malicious	Mirai	Browse	38.14.172.49
	PeleHfdpzX.elf	Get hash	malicious	Mirai	Browse	38.139.235.111
	ULRmk7oYR7.elf	Get hash	malicious	Mirai	Browse	149.110.96.196
	na.elf	Get hash	malicious	Mirai	Browse	38.45.244.222
	na.elf	Get hash	malicious	Mirai	Browse	38.161.13.62
	na.elf	Get hash	malicious	Mirai	Browse	23.237.211.213

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):	5.9249602561224215
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	52'636 bytes
MD5:	6f13045fb6dca87dcfa361271d1c89cf
SHA1:	1620bb2352143c5acb4ae90980087ece953ca7ff
SHA256:	f792c88aedc3edc88a03e66dffbadca370c4219d2b98e4f4c5ce37400388f3b3
SHA512:	175599986094d1a62274092b7e85a8d7bb985cc21971ff82244c84a88cbaac96ad65f410e622468638686b808bd0de6231e07aa06eb2b27928bba22df0e5ee87
SSDEEP:	768:C5lz59xsuLOU2secUf/SPlk5HLGr2tetKT325snHgwkBMsPo0/aH0+p5cdANs:qbcKPoHaaeXiH9QbZX+oG
TLSH:	EC33198179829A0BCAC507BBFA5F428D37267788E3DE7213DC21AF11279B52F0D6A111
File Content Preview:	.ELF...a..........(.........4...........4. ...(.........................................................LE..........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:	0x2
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	52236
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	0xb7ec	0x0	0x6	AX	16
.fini	PROGBITS	0x1389c	0xb89c	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x138b0	0xb8b0	0x1034	0x0	0x2	A	4
.ctors	PROGBITS	0x1c8e8	0xc8e8	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x1c8f0	0xc8f0	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x1c8fc	0xc8fc	0x2d0	0x0	0x3	WA	4
.bss	NOBITS	0x1cbcc	0xcbcc	0x4268	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xcbcc	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	0xc8e4	0xc8e4	5.9494	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0xc8e8	0x1c8e8	0x1c8e8	0x2e4	0x454c	3.7147	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
Oct 13, 2024 15:25:01.103981972 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:25:01.108932972 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:25:01.108989000 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:25:01.109185934 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:25:01.114025116 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:25:03.612371922 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:25:03.612689972 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:25:18.623543024 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:25:18.628971100 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:25:34.277295113 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:25:34.277590036 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:26:16.331767082 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:26:16.332278013 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:26:56.275137901 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:26:56.275470972 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:27:11.288722038 CEST	53616	7193	192.168.2.15	38.60.249.66
Oct 13, 2024 15:27:11.294226885 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:27:44.650013924 CEST	55762	53	192.168.2.15	8.8.8.8
Oct 13, 2024 15:27:44.655054092 CEST	53	55762	8.8.8.8	192.168.2.15
Oct 13, 2024 15:27:44.655142069 CEST	55762	53	192.168.2.15	8.8.8.8
Oct 13, 2024 15:27:44.655142069 CEST	55762	53	192.168.2.15	8.8.8.8
Oct 13, 2024 15:27:44.655189991 CEST	55762	53	192.168.2.15	8.8.8.8
Oct 13, 2024 15:27:44.660214901 CEST	53	55762	8.8.8.8	192.168.2.15
Oct 13, 2024 15:27:44.660247087 CEST	53	55762	8.8.8.8	192.168.2.15
Oct 13, 2024 15:27:45.113401890 CEST	53	55762	8.8.8.8	192.168.2.15
Oct 13, 2024 15:27:45.113646984 CEST	55762	53	192.168.2.15	8.8.8.8
Oct 13, 2024 15:27:45.247549057 CEST	53	55762	8.8.8.8	192.168.2.15
Oct 13, 2024 15:27:45.247807980 CEST	55762	53	192.168.2.15	8.8.8.8
Oct 13, 2024 15:27:47.113944054 CEST	53	55762	8.8.8.8	192.168.2.15
Oct 13, 2024 15:27:47.114618063 CEST	55762	53	192.168.2.15	8.8.8.8
Oct 13, 2024 15:27:47.119631052 CEST	53	55762	8.8.8.8	192.168.2.15
Oct 13, 2024 15:27:59.416341066 CEST	7193	53616	38.60.249.66	192.168.2.15
Oct 13, 2024 15:27:59.416826010 CEST	53616	7193	192.168.2.15	38.60.249.66

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 13, 2024 15:25:00.916141033 CEST	33748	53	192.168.2.15	161.97.219.84
Oct 13, 2024 15:25:01.103106022 CEST	53	33748	161.97.219.84	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 13, 2024 15:25:00.916141033 CEST	192.168.2.15	161.97.219.84	0xbfa8	Standard query (0)	eighteen.pirate	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:27:44.655142069 CEST	192.168.2.15	8.8.8.8	0xb63	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:27:44.655189991 CEST	192.168.2.15	8.8.8.8	0x2703	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	Address	Type	Class	DNS over HTTPS
Oct 13, 2024 15:25:01.103106022 CEST	161.97.219.84	192.168.2.15	0xbfa8	No error (0)	eighteen.pirate	38.60.249.66	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:27:45.247549057 CEST	8.8.8.8	192.168.2.15	0xb63	No error (0)	daisy.ubuntu.com	162.213.35.24	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:27:45.247549057 CEST	8.8.8.8	192.168.2.15	0xb63	No error (0)	daisy.ubuntu.com	162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: na.elf PID: 5782, Parent PID: 5708

General

Start time (UTC):	13:24:59
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: na.elf PID: 5784, Parent PID: 5782

General

Start time (UTC):	13:25:00
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: na.elf PID: 5787, Parent PID: 5782

General

Start time (UTC):	13:25:00
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	-
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 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

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 ...

Warning!

Linux Analysis Report na.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

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

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: na.elf PID: 5782, Parent PID: 5708

General

Chronological Activities

Analysis Process: na.elf PID: 5784, Parent PID: 5782

General

Chronological Activities

Analysis Process: na.elf PID: 5787, Parent PID: 5782

General

Chronological Activities

Linux Analysis Report
na.elf