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Linux Analysis Report
fsa.elf

Overview

General Information

Sample name:	fsa.elf
Analysis ID:	1431994
MD5:	5e692b7351f3ed9e69629ed39d66a0c5
SHA1:	f47809e62dc517133dc7b45bb517fcd23a181673
SHA256:	3f63c1d262a6e900833b2dbd615f72006785c124d4ca7fda01cd621ca615865f
Tags:	elf
Infos:

Detection

Score:	64
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Machine Learning detection for sample

Sample is packed with UPX

ELF contains segments with high entropy indicating compressed/encrypted content

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

Sample contains only a LOAD segment without any section mappings

Classification

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1431994
Start date and time:	2024-04-26 08:13:09 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 37s
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:	fsa.elf
Detection:	MAL
Classification:	mal64.evad.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/fsa.elf
PID:	6214
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	Host is none
Standard Error:	___ _ / _ \ ___ ___ _ __ __ _ ___\| \| __ / /_\/____/ __\|/ __\| '__/ _` \|/ __\| \|/ / / /_\\_____\__ \ (__\| \| \| (_\| \| (__\| < \____/ \|___/\___\|_\| \__,_\|\___\|_\|\_\ fscan version: 1.8.0 Usage of /tmp/fsa.elf: -br int Brute threads (default 1) -c string exec command (ssh) -cookie string set poc cookie,-cookie rememberMe=login -debug int every time to LogErr (default 60) -domain string smb domain -full poc full scan,as: shiro 100 key -h string IP address of the host you want to scan,for example: 192.168.11.11 \| 192.168.11.11-255 \| 192.168.11.11,192.168.11.12 -hf string host file, -hf ip.txt -hn string the hosts no scan,as: -hn 192.168.1.1/24 -m string Select scan type ,as: -m ssh (default "all") -no not to save output log -nobr not to Brute password -nopoc not to scan web vul -np not to ping -num int poc rate (default 20) -o string Outputfile (default "result.txt") -p string Select a port,for example: 22 \| 1-65535 \| 22,80,3306 (default "21,22,80,81,135,139,443,445,1433,1521,3306,5432,6379,7001,8000,8080,8089,9000,9200,11211,27017") -pa string add port base DefaultPorts,-pa 3389 -path string fcgismb romote file path -ping using ping replace icmp -pn string the ports no scan,as: -pn 445 -pocname string use the pocs these contain pocname, -pocname weblogic -pocpath string poc file path -portf string Port File -proxy string set poc proxy, -proxy http://127.0.0.1:8080 -pwd string password -pwda string add a password base DefaultPasses,-pwda password -pwdf string password file -rf string redis file to write sshkey file (as: -rf id_rsa.pub) -rs string redis shell to write cron file (as: -rs 192.168.1.1:6666) -sc string ms17 shellcode,as -sc add -silent silent scan -socks5 string set socks5 proxy, will be used in tcp connection, timeout setting will not work -sshkey string sshkey file (id_rsa) -t int Thread nums (default 600) -time int Set timeout (default 3) -top int show live len top (default 10) -u string url -uf string urlfile -user string username -usera string add a user base DefaultUsers,-usera user -userf string username file -wt int Set web timeout (default 5)

Process Tree

system is lnxubuntu20

fsa.elf (PID: 6214, Parent: 6127, MD5: 5e692b7351f3ed9e69629ed39d66a0c5) Arguments: /tmp/fsa.elf

dash New Fork (PID: 6218, Parent: 4334)

rm (PID: 6218, Parent: 4334, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.eaYG9ch38r /tmp/tmp.qhU28QogYd /tmp/tmp.gr2Bn6czuc

dash New Fork (PID: 6219, Parent: 4334)

cat (PID: 6219, Parent: 4334, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.eaYG9ch38r

dash New Fork (PID: 6220, Parent: 4334)

head (PID: 6220, Parent: 4334, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 6221, Parent: 4334)

tr (PID: 6221, Parent: 4334, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 6222, Parent: 4334)

cut (PID: 6222, Parent: 4334, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 6223, Parent: 4334)

cat (PID: 6223, Parent: 4334, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.eaYG9ch38r

dash New Fork (PID: 6224, Parent: 4334)

head (PID: 6224, Parent: 4334, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 6225, Parent: 4334)

tr (PID: 6225, Parent: 4334, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 6226, Parent: 4334)

cut (PID: 6226, Parent: 4334, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 6227, Parent: 4334)

rm (PID: 6227, Parent: 4334, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.eaYG9ch38r /tmp/tmp.qhU28QogYd /tmp/tmp.gr2Bn6czuc

cleanup

Stderr: ___ _ / _ \ ___ ___ _ __ __ _ ___| | __ / /_\/____/ __|/ __| '__/ _` |/ __| |/ // /_\\_____\__ \ (__| | | (_| | (__| < \____/ |___/\___|_| \__,_|\___|_|\_\ fscan version: 1.8.0Usage of /tmp/fsa.elf: -br int Brute threads (default 1) -c string exec command (ssh) -cookie string set poc cookie,-cookie rememberMe=login -debug int every time to LogErr (default 60) -domain string smb domain -full poc full scan,as: shiro 100 key -h string IP address of the host you want to scan,for example: 192.168.11.11 | 192.168.11.11-255 | 192.168.11.11,192.168.11.12 -hf string host file, -hf ip.txt -hn string the hosts no scan,as: -hn 192.168.1.1/24 -m string Select scan type ,as: -m ssh (default "all") -no not to save output log -nobr not to Brute password -nopoc not to scan web vul -np not to ping -num int poc rate (default 20) -o string Outputfile (default "result.txt") -p string Select a port,for example: 22 | 1-65535 | 22,80,3306 (default "21,22,80,81,135,139,443,445,1433,1521,3306,5432,6379,7001,8000,8080,8089,9000,9200,11211,27017") -pa string add port base DefaultPorts,-pa 3389 -path string fcgismb romote file path -ping using ping replace icmp -pn string the ports no scan,as: -pn 445 -pocname string use the pocs these contain pocname, -pocname weblogic -pocpath string poc file path -portf string Port File -proxy string set poc proxy, -proxy http://127.0.0.1:8080 -pwd string password -pwda string add a password base DefaultPasses,-pwda password -pwdf string password file -rf string redis file to write sshkey file (as: -rf id_rsa.pub) -rs string redis shell to write cron file (as: -rs 192.168.1.1:6666) -sc string ms17 shellcode,as -sc add -silent silent scan -socks5 string set socks5 proxy, will be used in tcp connection, timeout setting will not work -sshkey string sshkey file (id_rsa) -t int Thread nums (default 600) -time int Set timeout (default 3) -top int show live len top (default 10) -u string url -uf string urlfile -user string username -usera string add a user base DefaultUsers,-usera user -userf string username file -wt int Set web timeout (default 5): exit code = 0

Source: fsa.elf

Submission file: segment LOAD with 7.9224 entropy (max. 8.0)

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	11 Obfuscated Files or Information	OS Credential Dumping	System Service 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 File Deletion	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
fsa.elf	39%	ReversingLabs	Linux.Trojan.Multiverze
fsa.elf	35%	Virustotal		Browse
fsa.elf	100%	Avira	LINUX/Agent.vcttj
fsa.elf	100%	Joe Sandbox ML

Name	Source	Malicious	Antivirus Detection	Reputation
http://upx.sf.net	fsa.elf	false		high
http://127.0.0.1:8080	fsa.elf, 6214.1.000000c000000000.000000c000400000.rw-.sdmp	false		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
54.171.230.55	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
54.171.230.55	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse
	hz2ffABF7w.elf	Get hash	malicious	Mirai, Okiru	Browse
	vlxx.arm6.elf	Get hash	malicious	Mirai, Okiru	Browse
	SecuriteInfo.com.Other.Malware-gen.3200.4135.elf	Get hash	malicious	Mirai	Browse
	http://94.156.79.129/i686	Get hash	malicious	Unknown	Browse
	en52ai3DFV.elf	Get hash	malicious	Chaos	Browse
	65kw6IfQdO.elf	Get hash	malicious	Unknown	Browse
	7Ud8fq8tJs.elf	Get hash	malicious	Gafgyt	Browse
	jb6F3H6QH4.elf	Get hash	malicious	Mirai, Gafgyt	Browse
	JCC3MNVgRd.elf	Get hash	malicious	Gafgyt	Browse
109.202.202.202	93dYAEq6GA.elf	Get hash	malicious	Gafgyt	Browse
	TCke75ESG2.elf	Get hash	malicious	Gafgyt	Browse
	OTpMIf3qBf.elf	Get hash	malicious	Mirai, Okiru	Browse
	Pb7emU2ZDo.elf	Get hash	malicious	Mirai, Okiru	Browse
	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse
	Id2uxwyyf8.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	C5fMgX1ZyY.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	U4EnIo30QR.elf	Get hash	malicious	Mirai, Okiru	Browse
	jTzYWf5xhy.elf	Get hash	malicious	Unknown	Browse
	p4JEO4DdDU.elf	Get hash	malicious	Mirai, Okiru	Browse
91.189.91.43	93dYAEq6GA.elf	Get hash	malicious	Gafgyt	Browse
	TCke75ESG2.elf	Get hash	malicious	Gafgyt	Browse
	Pb7emU2ZDo.elf	Get hash	malicious	Mirai, Okiru	Browse
	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse
	Id2uxwyyf8.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	U4EnIo30QR.elf	Get hash	malicious	Mirai, Okiru	Browse
	jTzYWf5xhy.elf	Get hash	malicious	Unknown	Browse
	p4JEO4DdDU.elf	Get hash	malicious	Mirai, Okiru	Browse
	E96GtZFAEb.elf	Get hash	malicious	Unknown	Browse
	4Mr5WcrpMo.elf	Get hash	malicious	Unknown	Browse
91.189.91.42	93dYAEq6GA.elf	Get hash	malicious	Gafgyt	Browse
	TCke75ESG2.elf	Get hash	malicious	Gafgyt	Browse
	OTpMIf3qBf.elf	Get hash	malicious	Mirai, Okiru	Browse
	Pb7emU2ZDo.elf	Get hash	malicious	Mirai, Okiru	Browse
	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse
	Id2uxwyyf8.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	C5fMgX1ZyY.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	U4EnIo30QR.elf	Get hash	malicious	Mirai, Okiru	Browse
	jTzYWf5xhy.elf	Get hash	malicious	Unknown	Browse
	p4JEO4DdDU.elf	Get hash	malicious	Mirai, Okiru	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	RJ93lr3oq2.elf	Get hash	malicious	Okiru	Browse	185.125.190.26
	93dYAEq6GA.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	TCke75ESG2.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	OTpMIf3qBf.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	aZxA9dZCxS.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	Pb7emU2ZDo.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	Id2uxwyyf8.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	cR7iTvKIZm.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	C5fMgX1ZyY.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
CANONICAL-ASGB	RJ93lr3oq2.elf	Get hash	malicious	Okiru	Browse	185.125.190.26
	93dYAEq6GA.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	TCke75ESG2.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	OTpMIf3qBf.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	aZxA9dZCxS.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	Pb7emU2ZDo.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	Id2uxwyyf8.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	cR7iTvKIZm.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	C5fMgX1ZyY.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
AMAZON-02US	http://cleverchoice.com.au	Get hash	malicious	Unknown	Browse	108.138.64.10
	http://cleverchoice.com.au	Get hash	malicious	Unknown	Browse	65.8.178.102
	BundleSweetIMSetup.exe	Get hash	malicious	Unknown	Browse	108.157.173.24
	http://cleverchoice.com.au	Get hash	malicious	Unknown	Browse	108.138.64.13
	INQ No. HDPE-16-GM-00- PI-INQ-3001.exe	Get hash	malicious	FormBook, PureLog Stealer	Browse	3.125.172.46
	https://shorturl.at/lMOT7	Get hash	malicious	Unknown	Browse	65.8.178.46
	https://uporniacomnuvidx.z13.web.core.windows.net/index.html	Get hash	malicious	TechSupportScam	Browse	65.8.184.5
	https://purexxfilmsjoybear.z13.web.core.windows.net/index.html	Get hash	malicious	TechSupportScam	Browse	65.8.184.63
	https://jpmanysexcomvistsxx.z13.web.core.windows.net/index.html	Get hash	malicious	TechSupportScam	Browse	65.8.184.63
	RemotePCHost.exe	Get hash	malicious	Unknown	Browse	54.193.137.147
INIT7CH	93dYAEq6GA.elf	Get hash	malicious	Gafgyt	Browse	109.202.202.202
	TCke75ESG2.elf	Get hash	malicious	Gafgyt	Browse	109.202.202.202
	OTpMIf3qBf.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	Pb7emU2ZDo.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	Id2uxwyyf8.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	C5fMgX1ZyY.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	U4EnIo30QR.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	jTzYWf5xhy.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	p4JEO4DdDU.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202

JA3 Fingerprints

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
fb4726d465c5f28b84cd6d14cedd13a7	SecuriteInfo.com.Trojan.Linux.GenericKD.24576.11147.21229.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	SecuriteInfo.com.Other.Malware-gen.3200.4135.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	http://94.156.79.129/i686	Get hash	malicious	Unknown	Browse	54.171.230.55
	EfsIiZhHxS.elf	Get hash	malicious	Gafgyt, Mirai	Browse	54.171.230.55
	1mHUcsxKG6.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	uWGh63gpjU.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	BYIVZ1jcJv.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	HfcQmQis2J.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	tajma.x86_64-20240421-1028.elf	Get hash	malicious	Mirai, Okiru	Browse	54.171.230.55
	1lkozpLZNX.elf	Get hash	malicious	Unknown	Browse	54.171.230.55

File type:	ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, no section header
Entropy (8bit):	7.922371153938957
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	fsa.elf
File size:	5'414'768 bytes
MD5:	5e692b7351f3ed9e69629ed39d66a0c5
SHA1:	f47809e62dc517133dc7b45bb517fcd23a181673
SHA256:	3f63c1d262a6e900833b2dbd615f72006785c124d4ca7fda01cd621ca615865f
SHA512:	9c8f1d779a0288937f16a843dcdf20812f1fb867356385f845cdf15b4b0fb718ae653fab69fbbeef9774f23d814e5698b369b5e3e0b30925227c8203e8e94cbe
SSDEEP:	98304:ZTARTHwTVMMX9fvsqX4kJGmMB/MVmaVvpy/0LssQz0mSBMQI:a1HWVMeZvs8pGmiEmvskAmh7
TLSH:	304633F9133B067376F183BE311A5A1867CAA935D0CE9226DBAD159F523FBB016C6403
File Content Preview:	.ELF..............>.............@...................@.8...@.......................@.......@.......R.......R......................................................^..............Q.td.....................................................:_.UPX!h.........V...V

Static ELF Info

ELF header
Class:	ELF64
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Advanced Micro Devices X86-64
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x929590
Flags:	0x0
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	3
Section Header Offset:	0
Section Header Size:	64
Number of Section Headers:	0
Header String Table Index:	0

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align
LOAD	0x0	0x400000	0x400000	0x529eed	0x529eed	7.9224	0x5	R E	0x1000
LOAD	0x0	0x92a000	0x92a000	0x0	0x1085ed0	0.0000	0x6	RW	0x1000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x8

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 26, 2024 08:13:49.080490112 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:49.334317923 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:50.872239113 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 26, 2024 08:13:51.144279957 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.144328117 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.144366980 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.144402981 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.144437075 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.144541979 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.144663095 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.144663095 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.144663095 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.144663095 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.144663095 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.144663095 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.145463943 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.396915913 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.903703928 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:51.903928041 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:51.904158115 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:52.153901100 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:52.155816078 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:52.155834913 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:52.155913115 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:52.155913115 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:52.157203913 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:52.403913975 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:52.403979063 CEST	443	33606	54.171.230.55	192.168.2.23
Apr 26, 2024 08:13:52.404021025 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:52.404067993 CEST	33606	443	192.168.2.23	54.171.230.55
Apr 26, 2024 08:13:56.247622967 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 26, 2024 08:13:57.015455008 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 26, 2024 08:14:11.349493027 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 26, 2024 08:14:23.635569096 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 26, 2024 08:14:27.731000900 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 26, 2024 08:14:52.303575993 CEST	43928	443	192.168.2.23	91.189.91.42

HTTPS Connections

Timestamp	Source IP	Source Port	Dest IP	Dest Port	Subject	Issuer	Not Before	Not After	JA3 SSL Client Fingerprint	JA3 SSL Client Digest
Apr 26, 2024 08:13:51.144541979 CEST	54.171.230.55	443	192.168.2.23	33606	CN=motd.ubuntu.com CN=R3, O=Let's Encrypt, C=US	CN=R3, O=Let's Encrypt, C=US CN=ISRG Root X1, O=Internet Security Research Group, C=US	Thu Mar 07 10:27:55 CET 2024 Fri Sep 04 02:00:00 CEST 2020	Wed Jun 05 11:27:54 CEST 2024 Mon Sep 15 18:00:00 CEST 2025	771,4866-4867-4865-49196-49200-163-159-52393-52392-52394-49327-49325-49315-49311-49245-49249-49239-49235-49195-49199-162-158-49326-49324-49314-49310-49244-49248-49238-49234-49188-49192-107-106-49267-49271-196-195-49187-49191-103-64-49266-49270-190-189-49162-49172-57-56-136-135-49161-49171-51-50-69-68-157-49313-49309-49233-156-49312-49308-49232-61-192-60-186-53-132-47-65-255,0-11-10-35-22-23-13-43-45-51,29-23-30-25-24,0-1-2	fb4726d465c5f28b84cd6d14cedd13a7
Apr 26, 2024 08:13:51.144541979 CEST	54.171.230.55	443	192.168.2.23	33606	CN=R3, O=Let's Encrypt, C=US	CN=ISRG Root X1, O=Internet Security Research Group, C=US	Fri Sep 04 02:00:00 CEST 2020	Mon Sep 15 18:00:00 CEST 2025		fb4726d465c5f28b84cd6d14cedd13a7

System Behavior

Analysis Process: fsa.elf PID: 6214, Parent PID: 6127

General

Start time (UTC):	06:13:49
Start date (UTC):	26/04/2024
Path:	/tmp/fsa.elf
Arguments:	/tmp/fsa.elf
File size:	5414768 bytes
MD5 hash:	5e692b7351f3ed9e69629ed39d66a0c5

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.eaYG9ch38r /tmp/tmp.qhU28QogYd /tmp/tmp.gr2Bn6czuc
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.eaYG9ch38r
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.eaYG9ch38r
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	06:13:51
Start date (UTC):	26/04/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.eaYG9ch38r /tmp/tmp.qhU28QogYd /tmp/tmp.gr2Bn6czuc
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Source: fsa.elf	ReversingLabs: Detection: 39%
Source: fsa.elf	Virustotal: Detection: 35%			Perma Link

Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
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: 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: fsa.elf, 6214.1.000000c000000000.000000c000400000.rw-.sdmp	String found in binary or memory: http://127.0.0.1:8080
Source: fsa.elf	String found in binary or memory: http://upx.sf.net

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 33606
Source: unknown	Network traffic detected: HTTP traffic on port 33606 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Id: UPX 3.96 Copyright (C) 1996-2020 the UPX Team. All Rights Reserved. $

Source: /usr/bin/dash (PID: 6218)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.eaYG9ch38r /tmp/tmp.qhU28QogYd /tmp/tmp.gr2Bn6czuc			Jump to behavior
Source: /usr/bin/dash (PID: 6227)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.eaYG9ch38r /tmp/tmp.qhU28QogYd /tmp/tmp.gr2Bn6czuc			Jump to behavior

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Module: Module Load, Process: OS API Execution, Process: Process Creation, Script: Script Execution, WMI: WMI Creation, Windows Registry: Windows Registry Key Creation
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 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 fsa.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Snort Signatures

Joe Sandbox Signatures

AV Detection

Compliance

Networking

System Summary

Data Obfuscation

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

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

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

HTTPS Connections

System Behavior

Analysis Process: fsa.elf PID: 6214, Parent PID: 6127

General

Chronological Activities

Analysis Process: dash PID: 6218, Parent PID: 4334

General

Chronological Activities

Analysis Process: rm PID: 6218, Parent PID: 4334

General

Chronological Activities

Analysis Process: dash PID: 6219, Parent PID: 4334

General

Chronological Activities

Analysis Process: cat PID: 6219, Parent PID: 4334

General

Chronological Activities

Analysis Process: dash PID: 6220, Parent PID: 4334

General

Chronological Activities

Analysis Process: head PID: 6220, Parent PID: 4334

General

Chronological Activities

Analysis Process: dash PID: 6221, Parent PID: 4334

General

Chronological Activities

Linux Analysis Report
fsa.elf