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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1533026
MD5:	5d2fe62daf581be2533ff153dfb51690
SHA1:	22b47572bbdc44d768e98bdc254791d73d69ce2b
SHA256:	dbdfcc8a0ab879dd282d0f27edd574b9dd99f9a90775d01646ee597be0f5b470
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Executes the "systemctl" command used for controlling the systemd system and service manager

Reads system version information

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1533026
Start date and time:	2024-10-14 10:45:04 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 10s
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@2/0

Runtime Messages

Command:	/tmp/na.elf
PID:	5725
Exit Code:	135
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 5725, Parent: 5530, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/na.elf

systemd New Fork (PID: 5794, Parent: 1)

snap-failure (PID: 5794, Parent: 1, MD5: 69136a7d575731ce62349f2e4d3e5c36) Arguments: /usr/lib/snapd/snap-failure snapd

snap-failure New Fork (PID: 5807, Parent: 5794)

systemctl (PID: 5807, Parent: 5794, MD5: 4deddfb6741481f68aeac522cc26ff4b) Arguments: systemctl stop snapd.socket

snap-failure New Fork (PID: 5808, Parent: 5794)

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	Virustotal: Detection: 22%			Perma Link
Source: na.elf	ReversingLabs: Detection: 15%

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: classification engine

Classification label: mal48.linELF@0/0@2/0

Source: /usr/lib/snapd/snap-failure (PID: 5807)

Systemctl executable: /usr/bin/systemctl -> systemctl stop snapd.socket

Jump to behavior

Source: /usr/lib/snapd/snap-failure (PID: 5794)

Reads version info: /proc/version

Jump to behavior

Source: /tmp/na.elf (PID: 5725)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 5725.1.000055b69e6e9000.000055b69e7f5000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: na.elf, 5725.1.000055b69e6e9000.000055b69e7f5000.rw-.sdmp	Binary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: na.elf, 5725.1.000055b69e6e9000.000055b69e7f5000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 5725.1.00007ffd5c181000.00007ffd5c1a2000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: na.elf, 5725.1.00007ffd5c181000.00007ffd5c1a2000.rw-.sdmp	Binary or memory string: YEB\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, 5725.1.000055b69e6e9000.000055b69e7f5000.rw-.sdmp	Binary or memory string: rg.qemu.gdb.arm.sys.regs">

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	1 Systemd Service	1 Systemd Service	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	1 System Information 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

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	23%	Virustotal		Browse
na.elf	16%	ReversingLabs	Linux.Trojan.Multiverze

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

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	na.elf	Get hash	malicious	Mirai, Okiru	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	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24

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, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.3, missing section headers at 381572
Entropy (8bit):	6.009711463557139
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	102'400 bytes
MD5:	5d2fe62daf581be2533ff153dfb51690
SHA1:	22b47572bbdc44d768e98bdc254791d73d69ce2b
SHA256:	dbdfcc8a0ab879dd282d0f27edd574b9dd99f9a90775d01646ee597be0f5b470
SHA512:	e4b0c85409978c8300dc87c1a430700cd7becceceee8d2748479ebb9fab933af65841c9da6989d45207d125b093213b5e48ba7e047b44c52c78f15140d8993b0
SSDEEP:	3072:9LOug02xHCKQnqZ9YfMXKgyLlBZSyPjYN5:FOugPHCKsqZ9YfM6g23ZJLYN5
TLSH:	0AA30A96F8A28B56C4C557B7FB4FC75637231795E3DF36038A184E34278B50A8E3AA01
File Content Preview:	.ELF..............(.........4...........4. ...(........p.....+...+......................4...4...4...@...@...............t...t...t..............................................................................................................................

Network Behavior

Network Port Distribution

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 14, 2024 10:46:41.384069920 CEST	32841	53	192.168.2.13	1.1.1.1
Oct 14, 2024 10:46:41.384172916 CEST	42053	53	192.168.2.13	1.1.1.1
Oct 14, 2024 10:46:41.391402006 CEST	53	42053	1.1.1.1	192.168.2.13
Oct 14, 2024 10:46:41.391503096 CEST	53	32841	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
Oct 14, 2024 10:46:41.384069920 CEST	192.168.2.13	1.1.1.1	0xf891	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Oct 14, 2024 10:46:41.384172916 CEST	192.168.2.13	1.1.1.1	0xcea9	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
Oct 14, 2024 10:46:41.391503096 CEST	1.1.1.1	192.168.2.13	0xf891	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Oct 14, 2024 10:46:41.391503096 CEST	1.1.1.1	192.168.2.13	0xf891	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: na.elf PID: 5725, Parent PID: 5530

General

Start time (UTC):	08:46:38
Start date (UTC):	14/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: systemd PID: 5794, Parent PID: 1

General

Start time (UTC):	08:47:17
Start date (UTC):	14/10/2024
Path:	/usr/lib/systemd/systemd
Arguments:	-
File size:	1620224 bytes
MD5 hash:	9b2bec7092a40488108543f9334aab75

Chronological Activities

Analysis Process: snap-failure PID: 5794, Parent PID: 1

General

Start time (UTC):	08:47:17
Start date (UTC):	14/10/2024
Path:	/usr/lib/snapd/snap-failure
Arguments:	/usr/lib/snapd/snap-failure snapd
File size:	4764904 bytes
MD5 hash:	69136a7d575731ce62349f2e4d3e5c36

Chronological Activities

Analysis Process: snap-failure PID: 5807, Parent PID: 5794

General

Start time (UTC):	08:47:17
Start date (UTC):	14/10/2024
Path:	/usr/lib/snapd/snap-failure
Arguments:	-
File size:	4764904 bytes
MD5 hash:	69136a7d575731ce62349f2e4d3e5c36

Chronological Activities

Analysis Process: systemctl PID: 5807, Parent PID: 5794

General

Start time (UTC):	08:47:17
Start date (UTC):	14/10/2024
Path:	/usr/bin/systemctl
Arguments:	systemctl stop snapd.socket
File size:	996584 bytes
MD5 hash:	4deddfb6741481f68aeac522cc26ff4b

Chronological Activities

Analysis Process: snap-failure PID: 5808, Parent PID: 5794

General

Start time (UTC):	08:47:17
Start date (UTC):	14/10/2024
Path:	/usr/lib/snapd/snap-failure
Arguments:	-
File size:	4764904 bytes
MD5 hash:	69136a7d575731ce62349f2e4d3e5c36

Description:	Adversaries may create or modify systemd services to repeatedly execute malicious payloads as part of persistence. Systemd is a system and service manager commonly used for managing background daemon processes (also known as services) and other system resources.Systemd is the default initialization (init) system on many Linux distributions replacing legacy init systems, including SysVinit and Upstart, while remaining backwards compatible.
Tactics:	Persistence, Privilege Escalation
Data Sources:	Command: Command Execution, File: File Creation, File: File Modification, Process: Process Creation, Service: Service Creation, Service: Service Modification
Platforms:	Linux
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:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information 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, Process: OS API Execution, Process: Process Creation
Platforms:	IaaS, Linux, macOS, Network, 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 na.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

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

Network Behavior

Network Port Distribution

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: na.elf PID: 5725, Parent PID: 5530

General

Chronological Activities

Analysis Process: systemd PID: 5794, Parent PID: 1

General

Chronological Activities

Analysis Process: snap-failure PID: 5794, Parent PID: 1

General

Chronological Activities

Analysis Process: snap-failure PID: 5807, Parent PID: 5794

General

Chronological Activities

Analysis Process: systemctl PID: 5807, Parent PID: 5794

General

Chronological Activities

Analysis Process: snap-failure PID: 5808, Parent PID: 5794

General

Chronological Activities

Linux Analysis Report
na.elf