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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1527361
MD5:	58a4f3082572f89f25797819d367f3cb
SHA1:	99188adb778637a37a98f69afbdef1e796c224a4
SHA256:	f8596dec411ddff35b79e14a246483b0c1556da8e46ee676832bcc63eb5c2b9f
Tags:	elfMiraiuser-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:	1527361
Start date and time:	2024-10-06 22:53:09 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 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:	mal60.troj.evad.linELF@0/0@1/0

Runtime Messages

Command:	/tmp/na.elf
PID:	6267
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: 6267, Parent: 6189, MD5: cd177594338c77b895ae27c33f8f86cc) Arguments: /tmp/na.elf

na.elf New Fork (PID: 6269, Parent: 6267)

na.elf New Fork (PID: 6271, Parent: 6267)

na.elf New Fork (PID: 6273, Parent: 6267)

cleanup

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: 23%

Source: na.elf

String: KXN^Nu/proc/wgetinitcurltftp/fdsocket/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//proc/net/tcpashloginntpdate

Networking

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

Source: global traffic

TCP traffic: 154.90.62.142 ports 61543,1,3,4,5,6

Source: global traffic

TCP traffic: 192.168.2.23:40320 -> 154.90.62.142:61543

Source: /tmp/na.elf (PID: 6267)

Socket: 127.0.0.1:1234

Jump to behavior

Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	UDP traffic detected without corresponding DNS query: 192.3.165.37

Source: global traffic

DNS traffic detected: DNS query: krddnsnet.dyn

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal60.troj.evad.linELF@0/0@1/0

Data Obfuscation

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

Source: /tmp/na.elf (PID: 6271)

File: /etc/config

Jump to behavior

Source: /tmp/na.elf (PID: 6271)	Directory: /root/.cache	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /root/.ssh	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /root/.config	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /root/.local	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /tmp/.X11-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /tmp/.Test-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /tmp/.font-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /tmp/.ICE-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /tmp/.XIM-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6271)	Directory: /etc/.java	Jump to behavior

Hooking and other Techniques for Hiding and Protection

Deletes system log files

Source: /tmp/na.elf (PID: 6271)

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

Jump to behavior

Source: /tmp/na.elf (PID: 6267)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 6267.1.00007ffc69600000.00007ffc69621000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-m68k/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, 6267.1.000055af793c9000.000055af7944e000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/m68k
Source: na.elf, 6267.1.00007ffc69600000.00007ffc69621000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-m68k
Source: na.elf, 6267.1.000055af793c9000.000055af7944e000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/m68k

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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
na.elf	24%	ReversingLabs	Linux.Backdoor.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
krddnsnet.dyn	154.90.62.142	true	true		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	ASN	ASN Name	Malicious
154.90.62.142	krddnsnet.dyn	Seychelles	40065	CNSERVERSUS	true
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
154.90.62.142	na.elf	Get hash	malicious	Unknown	Browse
154.90.62.142	na.elf	Get hash	malicious	Unknown	Browse
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai, Moobot	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Unknown	Browse
91.189.91.42	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai, Moobot	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context

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
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Moobot	Browse	185.125.190.26
	na.elf	Get hash	malicious	Mirai, Moobot	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Unknown	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	Mirai	Browse	185.125.190.26
CANONICAL-ASGB	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	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Moobot	Browse	185.125.190.26
	na.elf	Get hash	malicious	Mirai, Moobot	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Unknown	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	Mirai	Browse	185.125.190.26
INIT7CH	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai, Moobot	Browse	109.202.202.202
	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai, Okiru	Browse	77.109.157.82
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
CNSERVERSUS	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Mirai	Browse	156.251.245.87
	https://bbvip666bet.com/	Get hash	malicious	Unknown	Browse	172.247.14.43
	rpedido-002297.exe	Get hash	malicious	FormBook, GuLoader	Browse	156.227.17.86
	che.elf	Get hash	malicious	Mirai, Moobot	Browse	154.90.62.152
	nan.elf	Get hash	malicious	Mirai, Moobot	Browse	154.90.62.152
	7.elf	Get hash	malicious	Mirai, Moobot	Browse	154.90.62.152
	DHL_ 46773482.exe	Get hash	malicious	FormBook	Browse	156.251.233.85
	https://bb33382.com:8365/?register=1&agent=4374577496	Get hash	malicious	Unknown	Browse	154.202.53.85

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, Motorola m68k, 68020, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.203772287353839
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	49'900 bytes
MD5:	58a4f3082572f89f25797819d367f3cb
SHA1:	99188adb778637a37a98f69afbdef1e796c224a4
SHA256:	f8596dec411ddff35b79e14a246483b0c1556da8e46ee676832bcc63eb5c2b9f
SHA512:	f38173ff761ef37246eb9f5712a67612c1c2d97bd4f27a1aab8e2f701822d37066a8ad62aebc7b546d87f6ced17676b3aa09fec149adffd5e786e3a383686274
SSDEEP:	1536:iEB8dWqnezgPTK+QasA6J8ddvSl+ofgDSpV:FmdWeezg7CaJZwngepV
TLSH:	57232AD2B900DE7DF80FE73A80034909B172B35651823B3367A7B9B79D3619449B7E86
File Content Preview:	.ELF.......................D...4...4.....4. ...(.................................. .......................ED...... .dt.Q............................NV..a....da....xN^NuNV..J9....f>"y...$ QJ.g.X.#....$N."y...$ QJ.f.A.....J.g.Hy....N.X.........N^NuNV..N^NuN

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	MC68000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x80000144
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	49460
Section Header Size:	40
Number of Section Headers:	11
Header String Table Index:	10

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x80000094	0x94	0x14	0x0	0x6	AX	2
.text	PROGBITS	0x800000a8	0xa8	0xb4a2	0x0	0x6	AX	4
.fini	PROGBITS	0x8000b54a	0xb54a	0xe	0x0	0x6	AX	2
.rodata	PROGBITS	0x8000b558	0xb558	0x8b0	0x0	0x2	A	2
.eh_frame	PROGBITS	0x8000be08	0xbe08	0x4	0x0	0x2	A	4
.ctors	PROGBITS	0x8000de0c	0xbe0c	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x8000de14	0xbe14	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x8000de20	0xbe20	0x2cc	0x0	0x3	WA	4
.bss	NOBITS	0x8000e0ec	0xc0ec	0x4264	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xc0ec	0x48	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x80000000	0x80000000	0xbe0c	0xbe0c	6.2362	0x5	R E	0x2000	.init .text .fini .rodata .eh_frame
LOAD	0xbe0c	0x8000de0c	0x8000de0c	0x2e0	0x4544	3.7907	0x6	RW	0x2000	.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 6, 2024 22:54:14.327740908 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 6, 2024 22:54:17.042428970 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:54:17.047322989 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:54:17.047369957 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:54:17.047621965 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:54:17.052354097 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:54:19.702935934 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 6, 2024 22:54:32.052542925 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:54:32.057501078 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:54:35.572715044 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 6, 2024 22:54:41.715955973 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 6, 2024 22:54:45.815289021 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 6, 2024 22:54:49.442003012 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:54:49.442121983 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:55:16.527237892 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 6, 2024 22:55:23.796823978 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:55:23.797521114 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:55:37.004256010 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 6, 2024 22:56:08.831763029 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:56:08.837058067 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:56:19.423101902 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:56:19.423475027 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:56:37.836253881 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:56:37.836626053 CEST	40320	61543	192.168.2.23	154.90.62.142
Oct 6, 2024 22:57:41.535424948 CEST	61543	40320	154.90.62.142	192.168.2.23
Oct 6, 2024 22:57:41.536211014 CEST	40320	61543	192.168.2.23	154.90.62.142

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 6, 2024 22:54:16.937366009 CEST	49590	53	192.168.2.23	192.3.165.37
Oct 6, 2024 22:54:17.040689945 CEST	53	49590	192.3.165.37	192.168.2.23

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 6, 2024 22:54:16.937366009 CEST	192.168.2.23	192.3.165.37	0xbcd8	Standard query (0)	krddnsnet.dyn	A (IP address)	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Oct 6, 2024 22:54:17.040689945 CEST	192.3.165.37	192.168.2.23	0xbcd8	No error (0)	krddnsnet.dyn		154.90.62.142	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: na.elf PID: 6267, Parent PID: 6189

General

Start time (UTC):	20:54:14
Start date (UTC):	06/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	4463432 bytes
MD5 hash:	cd177594338c77b895ae27c33f8f86cc

Chronological Activities

Analysis Process: na.elf PID: 6269, Parent PID: 6267

General

Start time (UTC):	20:54:15
Start date (UTC):	06/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4463432 bytes
MD5 hash:	cd177594338c77b895ae27c33f8f86cc

Chronological Activities

Analysis Process: na.elf PID: 6271, Parent PID: 6267

General

Start time (UTC):	20:54:15
Start date (UTC):	06/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4463432 bytes
MD5 hash:	cd177594338c77b895ae27c33f8f86cc

Chronological Activities

Analysis Process: na.elf PID: 6273, Parent PID: 6267

General

Start time (UTC):	20:54:15
Start date (UTC):	06/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4463432 bytes
MD5 hash:	cd177594338c77b895ae27c33f8f86cc

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

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

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

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: 6267, Parent PID: 6189

General

Chronological Activities

Analysis Process: na.elf PID: 6269, Parent PID: 6267

General

Chronological Activities

Analysis Process: na.elf PID: 6271, Parent PID: 6267

General

Chronological Activities

Analysis Process: na.elf PID: 6273, Parent PID: 6267

General

Chronological Activities

Linux Analysis Report
na.elf