Edit tour

Linux Analysis Report
efea6.elf

Overview

General Information

Sample name:	efea6.elf
Analysis ID:	1653947
MD5:	1ab0d196bf57466769cff70e7f0a86fb
SHA1:	f3fe74abf56449b0d6de554cfa220b285d4307e2
SHA256:	4ea834e9a7f7f03b5e5b8413f8f9d588deb9b92b16fcdc3a0cee785a16e7368d
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Executes the "rm" command used to delete files or directories

Found strings indicative of a multi-platform dropper

Sample has stripped symbol table

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1653947
Start date and time:	2025-04-01 18:37:19 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 32s
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:	efea6.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/efea6.elf
PID:	5516
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

efea6.elf (PID: 5516, Parent: 5442, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/efea6.elf

dash New Fork (PID: 5617, Parent: 3674)

rm (PID: 5617, Parent: 3674, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.vLU7744749 /tmp/tmp.hTqTAI7g1G /tmp/tmp.v80198zp3J

dash New Fork (PID: 5618, Parent: 3674)

rm (PID: 5618, Parent: 3674, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.vLU7744749 /tmp/tmp.hTqTAI7g1G /tmp/tmp.v80198zp3J

cleanup

String: /lib/systemd//usr/lib/systemd/system/system/bin//gm/bin//home/process//home/helper/home/davinci/z/bin//mnt/mtd//tmp/sqfs//usr/libexec//usr/sbin//z/zbin//usr/bin/bin//tmp/var/mnt/root/boot/home/dev/media/opt/../(deleted)x86armmipsmpslsh4wgetcurllynxftpftpgettftpscpaflaaarsyncpfclamscanreadelfizsnapstracelsofgdbpmapltraceptracewiresharktsharktcpdumpnetstatssnmaphping3tracerouteiptablesnftfirewalldauditctlselinuxapparmoraptdnfyumzypperpacmanemergebrewportnanovimvinvimgeditkateemacspkillkillallkillsystemctlnohuppythonpython3perlrubyluanodebashshkshzshfishvolatilitychkrootkitrkhunterradare2binwalkdockerpodmanlxcqemuvirshvboxmanagemountumountdfdulsblkblkidmkfsfdiskpartedobjdumpstringsxxdhexdumpncnetcatsocatjournalctldmesglogcattaillessgrepawksedtmux[watcher] deleted file: %s%s/%s/data/local/tmp/sbin/dev/null/dev/console/var/lib/dockerkworker/u8:0raw.awaken-network.net/proc/self/cmdline/proc/%d/statusName:-

Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
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: unknown	Network traffic detected: HTTP traffic on port 49566 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 44530
Source: unknown	Network traffic detected: HTTP traffic on port 44530 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: /usr/bin/dash (PID: 5617)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.vLU7744749 /tmp/tmp.hTqTAI7g1G /tmp/tmp.v80198zp3J			Jump to behavior
Source: /usr/bin/dash (PID: 5618)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.vLU7744749 /tmp/tmp.hTqTAI7g1G /tmp/tmp.v80198zp3J			Jump to behavior

Source: /tmp/efea6.elf (PID: 5516)

Queries kernel information via 'uname':

Jump to behavior

Source: efea6.elf, 5516.1.000055c187771000.000055c18789f000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: efea6.elf	Binary or memory string: /lib/systemd//usr/lib/systemd/system/system/bin//gm/bin//home/process//home/helper/home/davinci/z/bin//mnt/mtd//tmp/sqfs//usr/libexec//usr/sbin//z/zbin//usr/bin/bin//tmp/var/mnt/root/boot/home/dev/media/opt/../(deleted)x86armmipsmpslsh4wgetcurllynxftpftpgettftpscpaflaaarsyncpfclamscanreadelfizsnapstracelsofgdbpmapltraceptracewiresharktsharktcpdumpnetstatssnmaphping3tracerouteiptablesnftfirewalldauditctlselinuxapparmoraptdnfyumzypperpacmanemergebrewportnanovimvinvimgeditkateemacspkillkillallkillsystemctlnohuppythonpython3perlrubyluanodebashshkshzshfishvolatilitychkrootkitrkhunterradare2binwalkdockerpodmanlxcqemuvirshvboxmanagemountumountdfdulsblkblkidmkfsfdiskpartedobjdumpstringsxxdhexdumpncnetcatsocatjournalctldmesglogcattaillessgrepawksedtmux[watcher] deleted file: %s%s/%s/data/local/tmp/sbin/dev/null/dev/console/var/lib/dockerkworker/u8:0raw.awaken-network.net/proc/self/cmdline/proc/%d/statusName:-
Source: efea6.elf, 5516.1.00007ffd8da2f000.00007ffd8da50000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/efea6.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/efea6.elf
Source: efea6.elf, 5516.1.000055c187771000.000055c18789f000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: efea6.elf, 5516.1.00007ffd8da2f000.00007ffd8da50000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: efea6.elf, 5516.1.00007ffd8da2f000.00007ffd8da50000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

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 File Deletion	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	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	2 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

Source	Detection	Scanner	Label	Link
efea6.elf	25%	Virustotal		Browse
efea6.elf	33%	ReversingLabs	Linux.Backdoor.Mirai

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.25	true	false		high

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
54.217.10.153	unknown	United States		16509	AMAZON-02US	false
34.254.182.186	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
54.217.10.153	main_arm5.elf	Get hash	malicious	Mirai	Browse
	socat	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	Execution.i586.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	havoc.spc.elf	Get hash	malicious	Mirai, Okiru	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	ppc.elf	Get hash	malicious	Unknown	Browse
34.254.182.186	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	ub8ehJSePAfc9FYqZIT6.arm.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	mips.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	bin.powerpc-440fp.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	FederalAgent.arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	FederalAgent.mips.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	FederalAgent.i686.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	FederalAgent.arm.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	FederalAgent.arm7.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	FederalAgent.sh4.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	FederalAgent.m68k.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	FederalAgent.x86.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	most-mpsl.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	most-mips.elf	Get hash	malicious	Mirai	Browse	162.213.35.25

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	https://buildin.ai/share/5a345237-8f26-47b9-9ffb-209d1d646648?code=0GHW42&embed=true	Get hash	malicious	Invisible JS, Tycoon2FA	Browse	3.168.73.27
	Watchdog.exe	Get hash	malicious	Unknown	Browse	108.139.47.112
	Watchdog.exe	Get hash	malicious	Unknown	Browse	108.139.47.43
	epibrowser_installer_130.0.6723.144.exe	Get hash	malicious	Unknown	Browse	13.225.63.87
	i486.elf	Get hash	malicious	Unknown	Browse	52.16.96.44
	arm4.elf	Get hash	malicious	Unknown	Browse	13.236.232.168
	x86_64.elf	Get hash	malicious	Unknown	Browse	108.151.82.213
	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	FederalAgent.arm.elf	Get hash	malicious	Mirai	Browse	34.243.160.129
	FederalAgent.i486.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
AMAZON-02US	https://buildin.ai/share/5a345237-8f26-47b9-9ffb-209d1d646648?code=0GHW42&embed=true	Get hash	malicious	Invisible JS, Tycoon2FA	Browse	3.168.73.27
	Watchdog.exe	Get hash	malicious	Unknown	Browse	108.139.47.112
	Watchdog.exe	Get hash	malicious	Unknown	Browse	108.139.47.43
	epibrowser_installer_130.0.6723.144.exe	Get hash	malicious	Unknown	Browse	13.225.63.87
	i486.elf	Get hash	malicious	Unknown	Browse	52.16.96.44
	arm4.elf	Get hash	malicious	Unknown	Browse	13.236.232.168
	x86_64.elf	Get hash	malicious	Unknown	Browse	108.151.82.213
	na.elf	Get hash	malicious	Prometei	Browse	13.213.51.196
	FederalAgent.arm.elf	Get hash	malicious	Mirai	Browse	34.243.160.129
	FederalAgent.i486.elf	Get hash	malicious	Unknown	Browse	54.171.230.55

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.571960699480983
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	efea6.elf
File size:	168'636 bytes
MD5:	1ab0d196bf57466769cff70e7f0a86fb
SHA1:	f3fe74abf56449b0d6de554cfa220b285d4307e2
SHA256:	4ea834e9a7f7f03b5e5b8413f8f9d588deb9b92b16fcdc3a0cee785a16e7368d
SHA512:	f03a4b44e0572d7622a36f2c32cd006bb78773fffdec816b1dcb9f72756e94bdfe0f344639ea355bd5490b62e99aa7a2a5cdaca887ae5ca2d631bc255d858a72
SSDEEP:	3072:6URkx4W9X0LSqXjdjwcziagIIhUkmjouOzEVKHf:6URkp0DXZjwcuaY5mjkzEk/
TLSH:	09F30956B8819F11D1D112BAFE1E528E73131B78E3EE72139D246F207B8A87B0E3B515
File Content Preview:	.ELF..............(.....T...4...........4. ...(.....................PG..PG..............TG..TG..PG...H..............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.8.......PG....-.@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:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8154
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	168116
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	0x8094	0x94	0x10	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x206cc	0x0	0x6	AX	16
.fini	PROGBITS	0x2877c	0x2077c	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x28790	0x20790	0x3fc0	0x0	0x2	A	8
.init_array	INIT_ARRAY	0x34754	0x24758	0x8	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x3475c	0x24760	0x4	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x34764	0x24768	0x78	0x0	0x3	WA	4
.got	PROGBITS	0x347dc	0x247e0	0x11c	0x4	0x3	WA	4
.data	PROGBITS	0x34900	0x24904	0x4734	0x0	0x3	WA	32
.bss	NOBITS	0x39038	0x29038	0xc900	0x0	0x3	WA	8
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x29038	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x29048	0x6a	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	0x24750	0x24750	5.9730	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x24754	0x34754	0x34750	0x48e4	0x111e4	0.5931	0x6	RW	0x8000	.init_array .fini_array .data.rel.ro .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 7
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 1, 2025 18:38:02.260819912 CEST	49566	443	192.168.2.15	54.217.10.153
Apr 1, 2025 18:38:30.747658014 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 1, 2025 18:38:30.747700930 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 1, 2025 18:38:30.747926950 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 1, 2025 18:38:30.749037981 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 1, 2025 18:38:30.749056101 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 1, 2025 18:39:30.746432066 CEST	44530	443	192.168.2.15	34.254.182.186
Apr 1, 2025 18:39:30.788270950 CEST	443	44530	34.254.182.186	192.168.2.15
Apr 1, 2025 18:40:05.473659992 CEST	443	44530	34.254.182.186	192.168.2.15

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 1, 2025 18:38:01.952169895 CEST	44582	53	192.168.2.15	1.1.1.1
Apr 1, 2025 18:38:01.952271938 CEST	42592	53	192.168.2.15	1.1.1.1
Apr 1, 2025 18:38:02.057892084 CEST	53	42592	1.1.1.1	192.168.2.15
Apr 1, 2025 18:38:02.142097950 CEST	53	44582	1.1.1.1	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 1, 2025 18:38:01.952169895 CEST	192.168.2.15	1.1.1.1	0x3c1e	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 1, 2025 18:38:01.952271938 CEST	192.168.2.15	1.1.1.1	0xcadc	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
Apr 1, 2025 18:38:02.142097950 CEST	1.1.1.1	192.168.2.15	0x3c1e	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Apr 1, 2025 18:38:02.142097950 CEST	1.1.1.1	192.168.2.15	0x3c1e	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: efea6.elf PID: 5516, Parent PID: 5442

General

Start time (UTC):	16:38:00
Start date (UTC):	01/04/2025
Path:	/tmp/efea6.elf
Arguments:	/tmp/efea6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	16:39:30
Start date (UTC):	01/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	16:39:30
Start date (UTC):	01/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.vLU7744749 /tmp/tmp.hTqTAI7g1G /tmp/tmp.v80198zp3J
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Start time (UTC):	16:39:30
Start date (UTC):	01/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	16:39:30
Start date (UTC):	01/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.vLU7744749 /tmp/tmp.hTqTAI7g1G /tmp/tmp.v80198zp3J
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Source: efea6.elf	Virustotal: Detection: 25%			Perma Link
Source: efea6.elf	ReversingLabs: Detection: 33%

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 delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary (ex: Ingress Tool Transfer ) may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Deletion
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 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 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 efea6.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

Persistence and Installation Behavior

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: efea6.elf PID: 5516, Parent PID: 5442

General

File Activities

File Opened

File Read

Process Activities

Signal Sent

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 5617, Parent PID: 3674

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5617, Parent PID: 3674

General

File Activities

File Opened

File Deleted

Linux Analysis Report
efea6.elf