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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1532518
MD5:	1f7870037d7fb8abfdd22416a26a1bbb
SHA1:	9c5c51743e3859aee2f65c0b4271597512e2f5a4
SHA256:	dfbbbef4b05eb83c777789126e96e6ed02a2bd1627a9ee0a32d2abb0da18c4bb
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	60
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Connects to many ports of the same IP (likely port scanning)

Deletes system log files

Sample tries to access files in /etc/config/ (typical for OpenWRT routers)

Creates hidden files and/or directories

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

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1532518
Start date and time:	2024-10-13 15:28:02 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 11s
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:	mal60.troj.evad.linELF@0/0@3/0

Runtime Messages

Command:	/tmp/na.elf
PID:	5514
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: 5514, Parent: 5432, MD5: 7dc1c0e23cd5e102bb12e5c29403410e) Arguments: /tmp/na.elf

na.elf New Fork (PID: 5516, Parent: 5514)

na.elf New Fork (PID: 5517, Parent: 5514)

na.elf New Fork (PID: 5521, Parent: 5514)

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: 18%

Source: na.elf	String: ash\|login\|wget\|curl\|tftp\|ntpdate
Source: na.elf	String: /proc//exe\|ash\|login\|wget\|curl\|tftp\|ntpdate/fd/socket\|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/

Networking

Connects to many ports of the same IP (likely port scanning)

Source: global traffic

TCP traffic: 38.60.249.66 ports 3,4,6,7,9,49376

Source: global traffic

TCP traffic: 192.168.2.14:57444 -> 38.60.249.66:49376

Source: /tmp/na.elf (PID: 5514)

Socket: 127.0.0.1:1234

Jump to behavior

Source: global traffic

TCP traffic: 192.168.2.14:46540 -> 185.125.190.26:443

Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown	UDP traffic detected without corresponding DNS query: 130.61.64.122

Source: global traffic	DNS traffic detected: DNS query: nineteen.libre
Source: global traffic	DNS traffic detected: DNS query: daisy.ubuntu.com

Source: unknown

Network traffic detected: HTTP traffic on port 46540 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal60.troj.evad.linELF@0/0@3/0

Data Obfuscation

Sample tries to access files in /etc/config/ (typical for OpenWRT routers)

Source: /tmp/na.elf (PID: 5517)

File: /etc/config

Jump to behavior

Source: /tmp/na.elf (PID: 5517)	Directory: /root/.cache	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /root/.ssh	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /root/.config	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /root/.local	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /tmp/.X11-unix	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /tmp/.Test-unix	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /tmp/.font-unix	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /tmp/.ICE-unix	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /tmp/.XIM-unix	Jump to behavior
Source: /tmp/na.elf (PID: 5517)	Directory: /etc/.java	Jump to behavior

Hooking and other Techniques for Hiding and Protection

Deletes system log files

Source: /tmp/na.elf (PID: 5517)

Log files deleted: /var/log/kern.log

Jump to behavior

Source: /tmp/na.elf (PID: 5514)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 5514.1.00005598cafb0000.00005598cb039000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sparc
Source: na.elf, 5514.1.00005598cafb0000.00005598cb039000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/sparc
Source: na.elf, 5514.1.00007ffd5a80a000.00007ffd5a82b000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-sparc/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, 5514.1.00007ffd5a80a000.00007ffd5a82b000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sparc

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	1 Hidden Files and Directories	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	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	1 Indicator Removal	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Non-Standard Port	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 Non-Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	Binary Padding	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	2 Application Layer Protocol	Traffic Duplication	Data Destruction

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
na.elf	18%	ReversingLabs	Linux.Backdoor.Mirai

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
nineteen.libre	38.60.249.66	true	true		unknown
daisy.ubuntu.com	162.213.35.25	true	false	0%, Virustotal, Browse	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
185.125.190.26	unknown	United Kingdom		41231	CANONICAL-ASGB	false
38.60.249.66	nineteen.libre	United States		174	COGENT-174US	true

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.125.190.26	exCmhB0ruY.elf	Get hash	malicious	Unknown	Browse
	bot.arm.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse
	bot.x86.elf	Get hash	malicious	Mirai, Okiru	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	bash.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
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
	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

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
nineteen.libre	na.elf	Get hash	malicious	Mirai	Browse	38.60.249.66
	na.elf	Get hash	malicious	Mirai	Browse	38.60.249.66
	GfPpov52Oc.elf	Get hash	malicious	Unknown	Browse	38.60.249.66
daisy.ubuntu.com	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	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

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	JUh7kxiILb.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-ASX.1307.11743.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-ASX.31818.3935.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	Rj2IVGj6JJ.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
COGENT-174US	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
	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

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, SPARC, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.914529698741412
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	60'984 bytes
MD5:	1f7870037d7fb8abfdd22416a26a1bbb
SHA1:	9c5c51743e3859aee2f65c0b4271597512e2f5a4
SHA256:	dfbbbef4b05eb83c777789126e96e6ed02a2bd1627a9ee0a32d2abb0da18c4bb
SHA512:	54baabfc43c873019c1c22c9b9ce1fee5b258a4468c206cf55b5da08565c3358fadea53430fa45acb272183d2e7c94c3f402cc9bb04591afc3a45be0e3328acf
SSDEEP:	1536:+q5U31FrnDRS2HWbyIWLQfzeJez6l6Tta4AnfS2TnO:+qmwMJ+ztKnqt
TLSH:	18532925BA762D2BC8D4997A21F74765F2F9134A14E8CA1E3D720E4EFF2064026137F8
File Content Preview:	.ELF...........................4.........4. ...(.......................x...x...............\|...\|...\|......Ed........dt.Q................................@..(....@.4.................#.....`h..`.....!.....!...@.....".........`......$!...!...@...........`....

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	Sparc
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x101a4
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	60584
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	0x10094	0x94	0x1c	0x0	0x6	AX	4
.text	PROGBITS	0x100b0	0xb0	0xd2cc	0x0	0x6	AX	4
.fini	PROGBITS	0x1d37c	0xd37c	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x1d390	0xd390	0x15e8	0x0	0x2	A	8
.ctors	PROGBITS	0x2e97c	0xe97c	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x2e984	0xe984	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x2e990	0xe990	0x2d8	0x0	0x3	WA	8
.bss	NOBITS	0x2ec68	0xec68	0x4278	0x0	0x3	WA	8
.shstrtab	STRTAB	0x0	0xec68	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	0x10000	0x10000	0xe978	0xe978	5.9364	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xe97c	0x2e97c	0x2e97c	0x2ec	0x4564	3.7464	0x6	RW	0x10000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 13, 2024 15:28:57.741790056 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:28:57.749373913 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:28:57.749438047 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:28:57.761291981 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:28:57.768228054 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:29:05.491880894 CEST	46540	443	192.168.2.14	185.125.190.26
Oct 13, 2024 15:29:12.775716066 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:29:12.780895948 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:29:16.585768938 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:29:16.585836887 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:29:37.234635115 CEST	46540	443	192.168.2.14	185.125.190.26
Oct 13, 2024 15:30:22.521312952 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:30:22.521589994 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:30:52.543083906 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:30:52.549124956 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:30:57.537925959 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:30:57.538439989 CEST	57444	49376	192.168.2.14	38.60.249.66
Oct 13, 2024 15:31:42.519289017 CEST	49376	57444	38.60.249.66	192.168.2.14
Oct 13, 2024 15:31:42.519407034 CEST	57444	49376	192.168.2.14	38.60.249.66

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 13, 2024 15:28:57.721088886 CEST	53622	53	192.168.2.14	130.61.64.122
Oct 13, 2024 15:28:57.728202105 CEST	53	53622	130.61.64.122	192.168.2.14
Oct 13, 2024 15:31:41.857705116 CEST	41322	53	192.168.2.14	8.8.8.8
Oct 13, 2024 15:31:41.857793093 CEST	56760	53	192.168.2.14	8.8.8.8
Oct 13, 2024 15:31:41.864532948 CEST	53	56760	8.8.8.8	192.168.2.14
Oct 13, 2024 15:31:41.864557981 CEST	53	41322	8.8.8.8	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 13, 2024 15:28:57.721088886 CEST	192.168.2.14	130.61.64.122	0x905d	Standard query (0)	nineteen.libre	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:31:41.857705116 CEST	192.168.2.14	8.8.8.8	0xa091	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:31:41.857793093 CEST	192.168.2.14	8.8.8.8	0xdeb5	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 15:28:57.728202105 CEST	130.61.64.122	192.168.2.14	0x905d	No error (0)	nineteen.libre	38.60.249.66	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:31:41.864557981 CEST	8.8.8.8	192.168.2.14	0xa091	No error (0)	daisy.ubuntu.com	162.213.35.25	A (IP address)	IN (0x0001)	false
Oct 13, 2024 15:31:41.864557981 CEST	8.8.8.8	192.168.2.14	0xa091	No error (0)	daisy.ubuntu.com	162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: na.elf PID: 5514, Parent PID: 5432

General

Start time (UTC):	13:28:56
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	4379400 bytes
MD5 hash:	7dc1c0e23cd5e102bb12e5c29403410e

Chronological Activities

Analysis Process: na.elf PID: 5516, Parent PID: 5514

General

Start time (UTC):	13:28:56
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4379400 bytes
MD5 hash:	7dc1c0e23cd5e102bb12e5c29403410e

Chronological Activities

Analysis Process: na.elf PID: 5517, Parent PID: 5514

General

Start time (UTC):	13:28:56
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4379400 bytes
MD5 hash:	7dc1c0e23cd5e102bb12e5c29403410e

Chronological Activities

Analysis Process: na.elf PID: 5521, Parent PID: 5514

General

Start time (UTC):	13:28:56
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4379400 bytes
MD5 hash:	7dc1c0e23cd5e102bb12e5c29403410e

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 set files and directories to be hidden to evade detection mechanisms. To prevent normal users from accidentally changing special files on a system, most operating systems have the concept of a ‘hidden’ file. These files don’t show up when a user browses the file system with a GUI or when using normal commands on the command line. Users must explicitly ask to show the hidden files either via a series of Graphical User Interface (GUI) prompts or with command line switches ( `dir /a` for Windows and `ls –a` for Linux and macOS).
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete or modify artifacts generated within systems to remove evidence of their presence or hinder defenses. Various artifacts may be created by an adversary or something that can be attributed to an adversary’s actions. Typically these artifacts are used as defensive indicators related to monitored events, such as strings from downloaded files, logs that are generated from user actions, and other data analyzed by defenders. Location, format, and type of artifact (such as command or login history) are often specific to each platform.
Tactics:	Defense Evasion
Data Sources:	Application Log: Application Log Content, Command: Command Execution, File: File Deletion, File: File Metadata, File: File Modification, Firewall: Firewall Rule Modification, Network Traffic: Network Traffic Content, Process: OS API Execution, Process: Process Creation, Scheduled Job: Scheduled Job Modification, User Account: User Account Authentication, User Account: User Account Deletion, Windows Registry: Windows Registry Key Deletion, Windows Registry: Windows Registry Key Modification
Platforms:	Containers, Google Workspace, Linux, macOS, Network, Office 365, 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 employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, 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

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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

Spreading

Networking

System Summary

Data Obfuscation

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

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

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: 5514, Parent PID: 5432

General

Chronological Activities

Analysis Process: na.elf PID: 5516, Parent PID: 5514

General

Chronological Activities

Analysis Process: na.elf PID: 5517, Parent PID: 5514

General

Chronological Activities

Analysis Process: na.elf PID: 5521, Parent PID: 5514

General

Chronological Activities

Linux Analysis Report
na.elf