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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1532519
MD5:	4f35c4b5448afbd2b51fe7caf02558fb
SHA1:	731d7d1d17ea9ce270cbb003c739470db944a3b5
SHA256:	78f79e8f1c91a0c6a15689364dbecebe239194ade041673f84d675abe88272a0
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	52
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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

Detected TCP or UDP traffic on non-standard ports

Enumerates processes within the "proc" file system

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

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:	1532519
Start date and time:	2024-10-13 15:28:29 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 14s
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:	mal52.troj.linELF@0/0@1/0

Runtime Messages

Command:	/tmp/na.elf
PID:	6233
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	thIs wEek on xLaB lEarNs nOthinG xd
Standard Error:

Process Tree

system is lnxubuntu20

dash New Fork (PID: 6221, Parent: 4331)

rm (PID: 6221, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Xf6qBMjlG5 /tmp/tmp.SM9eUgAVZB /tmp/tmp.pywyYoyVlE

dash New Fork (PID: 6222, Parent: 4331)

rm (PID: 6222, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Xf6qBMjlG5 /tmp/tmp.SM9eUgAVZB /tmp/tmp.pywyYoyVlE

na.elf (PID: 6233, Parent: 6156, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/na.elf

na.elf New Fork (PID: 6235, Parent: 6233)

na.elf New Fork (PID: 6237, Parent: 6233)

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: na.elf

ReversingLabs: Detection: 18%

Source: na.elf	String: ash\|login\|wget\|curl\|tftp\|ntpdate
Source: na.elf	String: /proc//exe\|ash\|login\|wget\|curl\|tftp\|ntpdate/fdsocket\|proc/usr/bin/usr/sbin/system/mnt/mtd/app/org/z/zbin/home/app/dvr/bin/duksan/userfs/mnt/app/usr/etc/dvr/main/usr/local/var/bin/tmp/sqfs/z/bin/dvr/mnt/mtd/zconf/gm/bin/home/process/var/challenge/usr/lib/lib/systemd//usr/lib/systemd/system/system/bin//mnt//home/helper/home/davinci/usr/libexec//sbin//bin/

Networking

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

Source: global traffic

TCP traffic: 156.244.16.207 ports 46852,2,4,5,6,8

Source: global traffic

TCP traffic: 192.168.2.23:60372 -> 156.244.16.207:46852

Source: /tmp/na.elf (PID: 6233)

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: 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: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	UDP traffic detected without corresponding DNS query: 116.203.104.203

Source: global traffic

DNS traffic detected: DNS query: 75cents.libre

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: mal52.troj.linELF@0/0@1/0

Source: /tmp/na.elf (PID: 6233)	File opened: /proc/11/maps	Jump to behavior
Source: /tmp/na.elf (PID: 6233)	File opened: /proc/22/maps	Jump to behavior
Source: /tmp/na.elf (PID: 6233)	File opened: /proc/66/maps	Jump to behavior
Source: /tmp/na.elf (PID: 6233)	File opened: /proc/99/maps	Jump to behavior
Source: /tmp/na.elf (PID: 6233)	File opened: /proc/111/maps	Jump to behavior
Source: /tmp/na.elf (PID: 6233)	File opened: /proc/222/maps	Jump to behavior
Source: /tmp/na.elf (PID: 6233)	File opened: /proc/333/maps	Jump to behavior
Source: /tmp/na.elf (PID: 6233)	File opened: /proc/777/maps	Jump to behavior

Source: /usr/bin/dash (PID: 6221)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Xf6qBMjlG5 /tmp/tmp.SM9eUgAVZB /tmp/tmp.pywyYoyVlE			Jump to behavior
Source: /usr/bin/dash (PID: 6222)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Xf6qBMjlG5 /tmp/tmp.SM9eUgAVZB /tmp/tmp.pywyYoyVlE			Jump to behavior

Source: /tmp/na.elf (PID: 6233)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 6233.1.00005582c3571000.00005582c36c0000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: na.elf, 6233.1.00005582c3571000.00005582c36c0000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 6233.1.00007fff47f8b000.00007fff47fac000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: na.elf, 6233.1.00007fff47f8b000.00007fff47fac000.rw-.sdmp	Binary or memory string: &x86_64/usr/bin/qemu-arm/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

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	1 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-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	18%	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
75cents.libre	156.244.16.207	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
156.244.16.207	75cents.libre	Seychelles	132839	POWERLINE-AS-APPOWERLINEDATACENTERHK	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
156.244.16.207	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	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
	JUh7kxiILb.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
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-ASX.1307.11743.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-ASX.31818.3935.elf	Get hash	malicious	Unknown	Browse
	Rj2IVGj6JJ.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	na.elf	Get hash	malicious	Unknown	Browse
	JUh7kxiILb.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
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-ASX.1307.11743.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-ASX.31818.3935.elf	Get hash	malicious	Unknown	Browse
	Rj2IVGj6JJ.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
75cents.libre	na.elf	Get hash	malicious	Mirai	Browse	156.244.16.207
	na.elf	Get hash	malicious	Mirai	Browse	156.244.16.207
	na.elf	Get hash	malicious	Unknown	Browse	156.244.16.207

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	na.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	JUh7kxiILb.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-ASX.1307.11743.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-ASX.31818.3935.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
CANONICAL-ASGB	na.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	JUh7kxiILb.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-ASX.1307.11743.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-ASX.31818.3935.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
INIT7CH	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	JUh7kxiILb.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	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	SecuriteInfo.com.ELF.Mirai-ASX.1307.11743.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	SecuriteInfo.com.ELF.Mirai-ASX.31818.3935.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	Rj2IVGj6JJ.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
POWERLINE-AS-APPOWERLINEDATACENTERHK	na.elf	Get hash	malicious	Mirai	Browse	156.250.157.119
	na.elf	Get hash	malicious	Mirai	Browse	154.213.192.29
	na.elf	Get hash	malicious	Unknown	Browse	154.213.192.29
	na.elf	Get hash	malicious	Unknown	Browse	154.213.192.29
	KU4NMyi8i1.elf	Get hash	malicious	Mirai	Browse	156.242.206.27
	jYEvdBHMOI.elf	Get hash	malicious	Mirai	Browse	156.253.238.123
	QmMz1SXUn8.elf	Get hash	malicious	Mirai	Browse	156.251.7.185
	PeleHfdpzX.elf	Get hash	malicious	Mirai	Browse	156.251.7.188
	ULRmk7oYR7.elf	Get hash	malicious	Mirai	Browse	156.250.157.132
	na.elf	Get hash	malicious	Mirai	Browse	154.213.192.29

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 LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.9731107334568385
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	76'544 bytes
MD5:	4f35c4b5448afbd2b51fe7caf02558fb
SHA1:	731d7d1d17ea9ce270cbb003c739470db944a3b5
SHA256:	78f79e8f1c91a0c6a15689364dbecebe239194ade041673f84d675abe88272a0
SHA512:	c92b61410aabcf8f894eacd550ca21aee9ad7fbdffada3bd7a5404377cce19d96fa14ec55f4619272b2f5adba31aee19dba6bbb4f5b1fe734de80dbc6c416f08
SSDEEP:	1536:qHnTyeRb0otnqQrAEte6AVUsL6x/tucQiW7Hld1iYtrVG3V:6VRb0otPr86IRL6x/tucQr7trV4
TLSH:	7D731846F8819F15D9D512BEFE0E018E33636B9CE3EE7112DD206F2567CA92B0A77502
File Content Preview:	.ELF..............(.........4....(......4. ...(........p.#...........................................$...$...............$...$...$..t...ps...............$...$...$..................Q.td..................................-...L..................@-.,@...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:	0x8194
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	5
Section Header Offset:	75944
Section Header Size:	40
Number of Section Headers:	15
Header String Table Index:	14

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0
.init	PROGBITS	0x80d4	0xd4	0x10	0x0	0x6	AX	0	4
.text	PROGBITS	0x80f0	0xf0	0x111c0	0x0	0x6	AX	0	16
.fini	PROGBITS	0x192b0	0x112b0	0x10	0x0	0x6	AX	0	4
.rodata	PROGBITS	0x192c0	0x112c0	0x10d0	0x0	0x2	A	0	4
.ARM.extab	PROGBITS	0x1a390	0x12390	0x18	0x0	0x2	A	0	4
.ARM.exidx	ARM_EXIDX	0x1a3a8	0x123a8	0x118	0x0	0x82	AL	2	4
.eh_frame	PROGBITS	0x224c0	0x124c0	0x4	0x0	0x3	WA	0	4
.tbss	NOBITS	0x224c4	0x124c4	0x8	0x0	0x403	WAT	0	4
.init_array	INIT_ARRAY	0x224c4	0x124c4	0x4	0x0	0x3	WA	0	4
.fini_array	FINI_ARRAY	0x224c8	0x124c8	0x4	0x0	0x3	WA	0	4
.got	PROGBITS	0x224d0	0x124d0	0xa8	0x4	0x3	WA	0	4
.data	PROGBITS	0x22578	0x12578	0x2bc	0x0	0x3	WA	0	4
.bss	NOBITS	0x22834	0x12834	0x6ffc	0x0	0x3	WA	0	4
.shstrtab	STRTAB	0x0	0x12834	0x73	0x0	0x0		0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
EXIDX	0x123a8	0x1a3a8	0x1a3a8	0x118	0x118	4.3698	0x4	R	0x4	.ARM.exidx
LOAD	0x0	0x8000	0x8000	0x124c0	0x124c0	5.9880	0x5	R E	0x8000	.init .text .fini .rodata .ARM.extab .ARM.exidx
LOAD	0x124c0	0x224c0	0x224c0	0x374	0x7370	4.3994	0x6	RW	0x8000	.eh_frame .tbss .init_array .fini_array .got .data .bss
TLS	0x124c4	0x224c4	0x224c4	0x0	0x8	0.0000	0x4	R	0x4	.tbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 13, 2024 15:29:20.130814075 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 13, 2024 15:29:20.900469065 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:29:20.905364037 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:29:20.905411959 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:29:20.905735016 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:29:20.910651922 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:29:25.506120920 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 13, 2024 15:29:26.785886049 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 13, 2024 15:29:35.917511940 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:29:35.922629118 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:29:40.864089966 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 13, 2024 15:29:51.102704048 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 13, 2024 15:29:57.250019073 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 13, 2024 15:30:21.818495035 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 13, 2024 15:30:23.177539110 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:30:23.178014040 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:30:42.295869112 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 13, 2024 15:30:57.540862083 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:30:57.541568041 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:31:12.555078983 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:31:12.560463905 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:31:42.504610062 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:31:42.505001068 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:32:43.372741938 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:32:43.373166084 CEST	60372	46852	192.168.2.23	156.244.16.207
Oct 13, 2024 15:32:54.478379965 CEST	46852	60372	156.244.16.207	192.168.2.23
Oct 13, 2024 15:32:54.478552103 CEST	60372	46852	192.168.2.23	156.244.16.207

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 13, 2024 15:29:20.881232023 CEST	38581	53	192.168.2.23	116.203.104.203
Oct 13, 2024 15:29:20.892653942 CEST	53	38581	116.203.104.203	192.168.2.23

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 13, 2024 15:29:20.881232023 CEST	192.168.2.23	116.203.104.203	0x37fb	Standard query (0)	75cents.libre	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 13, 2024 15:29:20.892653942 CEST	116.203.104.203	192.168.2.23	0x37fb	No error (0)	75cents.libre		156.244.16.207	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: dash PID: 6221, Parent PID: 4331

General

Start time (UTC):	13:29:12
Start date (UTC):	13/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6221, Parent PID: 4331

General

Start time (UTC):	13:29:12
Start date (UTC):	13/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.Xf6qBMjlG5 /tmp/tmp.SM9eUgAVZB /tmp/tmp.pywyYoyVlE
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 6222, Parent PID: 4331

General

Start time (UTC):	13:29:12
Start date (UTC):	13/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6222, Parent PID: 4331

General

Start time (UTC):	13:29:12
Start date (UTC):	13/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.Xf6qBMjlG5 /tmp/tmp.SM9eUgAVZB /tmp/tmp.pywyYoyVlE
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: na.elf PID: 6233, Parent PID: 6156

General

Start time (UTC):	13:29:19
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: na.elf PID: 6235, Parent PID: 6233

General

Start time (UTC):	13:29:20
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Chronological Activities

Analysis Process: na.elf PID: 6237, Parent PID: 6233

General

Start time (UTC):	13:29:20
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password, from the operating system and software. Credentials can then be used to perform Lateral Movement and access restricted information.
Tactics:	Credential Access
Data Sources:	Active Directory: Active Directory Object Access, Command: Command Execution, File: File Access, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow, Process: OS API Execution, Process: Process Access, Process: Process Creation, Windows Registry: Windows Registry Key Access
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 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 ...

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Linux Analysis Report na.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Persistence and Installation Behavior

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: dash PID: 6221, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6221, Parent PID: 4331

General

Chronological Activities

Analysis Process: dash PID: 6222, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6222, Parent PID: 4331

General

Chronological Activities

Analysis Process: na.elf PID: 6233, Parent PID: 6156

General

Chronological Activities

Analysis Process: na.elf PID: 6235, Parent PID: 6233

General

Chronological Activities

Analysis Process: na.elf PID: 6237, Parent PID: 6233

General

Chronological Activities

Linux Analysis Report
na.elf