Edit tour

Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1530547
MD5:	0381e1bb451047fd5c7d60720f284532
SHA1:	9700458bc797c2f03c56c29d7d4d84488d3cffd6
SHA256:	890a0afc386808d8827ff440c09f4c73aeb3eb8275d03e6535a2bbaf7bc92640
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

Found strings indicative of a multi-platform dropper

Sample has stripped symbol table

Sample listens on a socket

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1530547
Start date and time:	2024-10-10 09:49:30 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 55s
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@3/0

Runtime Messages

Command:	/tmp/na.elf
PID:	5483
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	thIs wEek on xLaB lEarNs nOthinG xd
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 5483, Parent: 5408, MD5: ae65271c943d3451b7f026d1fadccea6) Arguments: /tmp/na.elf

na.elf New Fork (PID: 5485, Parent: 5483)

na.elf New Fork (PID: 5487, Parent: 5483)

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: 28%
Source: na.elf	Virustotal: Detection: 19%			Perma Link

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: 154.90.62.142 ports 1,2,5,6,7,27651

Source: global traffic

TCP traffic: 192.168.2.14:44250 -> 154.90.62.142:27651

Source: /tmp/na.elf (PID: 5483)

Socket: 127.0.0.1:1234

Jump to behavior

Source: unknown	UDP traffic detected without corresponding DNS query: 116.203.104.203
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: kr2ddnsnet.dyn
Source: global traffic	DNS traffic detected: DNS query: daisy.ubuntu.com

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal52.troj.linELF@0/0@3/0

Source: /tmp/na.elf (PID: 5483)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 5483.1.00007ffda4511000.00007ffda4532000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-ppc/tmp/na.elfSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/na.elf
Source: na.elf, 5483.1.0000557be6e40000.0000557be6ef0000.rw-.sdmp	Binary or memory string: !/etc/qemu-binfmt/ppc1
Source: na.elf, 5483.1.0000557be6e40000.0000557be6ef0000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/ppc
Source: na.elf, 5483.1.00007ffda4511000.00007ffda4532000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-ppc

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	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Standard Port	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	1 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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
na.elf	29%	ReversingLabs	Linux.Backdoor.Mirai
na.elf	19%	Virustotal		Browse

Dropped Files

⊘No Antivirus matches

Domains

Source	Detection	Scanner	Label	Link
daisy.ubuntu.com	0%	Virustotal		Browse
kr2ddnsnet.dyn	0%	Virustotal		Browse

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	false	0%, Virustotal, Browse	unknown
kr2ddnsnet.dyn	154.90.62.142	true	true	0%, Virustotal, Browse	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	Flag	ASN	ASN Name	Malicious
154.90.62.142	kr2ddnsnet.dyn	Seychelles		40065	CNSERVERSUS	true

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
154.90.62.142	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	NLHiAJgSnj.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	na.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	na.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	na.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	na.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	na.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
kr2ddnsnet.dyn	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	SecuriteInfo.com.Linux.Mirai.5660.5605.13970.elf	Get hash	malicious	Unknown	Browse	154.90.63.69
	SecuriteInfo.com.Linux.Mirai.5075.8943.20322.elf	Get hash	malicious	Unknown	Browse	154.90.63.69
	SecuriteInfo.com.Linux.Mirai.5074.27008.26400.elf	Get hash	malicious	Unknown	Browse	154.90.63.69

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CNSERVERSUS	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	9b7dlGj5Gq.exe	Get hash	malicious	FormBook	Browse	198.16.50.171
	lPX6PixV4t.exe	Get hash	malicious	FormBook	Browse	23.224.37.78
	na.elf	Get hash	malicious	Mirai	Browse	23.224.58.152
	NLHiAJgSnj.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	fJD7ivEnzm.exe	Get hash	malicious	FormBook	Browse	43.242.202.169

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.091666421172553
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	47'332 bytes
MD5:	0381e1bb451047fd5c7d60720f284532
SHA1:	9700458bc797c2f03c56c29d7d4d84488d3cffd6
SHA256:	890a0afc386808d8827ff440c09f4c73aeb3eb8275d03e6535a2bbaf7bc92640
SHA512:	67aa9a63e1f5ab19db8380c78218ee43883c59bef44dc59c27eed4d1201ec66efff4deda79fdad936a44e227b08242726e898abdef9ffb7a801f22831d72459b
SSDEEP:	768:ySvZRH1GubDcxxQZ18wbo3O97ZqHPlWXsonaz2LM/Vq4MGlzAsmp:lDccZ83O97ZqvlWJHIdq4MMzA/p
TLSH:	A7230842B71C0547C1762EB0363B17E0D3EBAAD222A4F388751FAB4AC1B1D376546E9D
File Content Preview:	.ELF...........................4.........4. ...(..........................................................ET........dt.Q.............................!..\|......$H...H..1...$8!. \|...N.. .!..\|.......?..........H..../...@..\?........+../...A..$8...})......N..

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	PowerPC
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x100001f0
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	46852
Section Header Size:	40
Number of Section Headers:	12
Header String Table Index:	11

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x10000094	0x94	0x24	0x0	0x6	AX	4
.text	PROGBITS	0x100000b8	0xb8	0xa988	0x0	0x6	AX	4
.fini	PROGBITS	0x1000aa40	0xaa40	0x20	0x0	0x6	AX	4
.rodata	PROGBITS	0x1000aa60	0xaa60	0x96c	0x0	0x2	A	4
.ctors	PROGBITS	0x1001b3d0	0xb3d0	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x1001b3d8	0xb3d8	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x1001b3e8	0xb3e8	0x2b4	0x0	0x3	WA	8
.sdata	PROGBITS	0x1001b69c	0xb69c	0x1c	0x0	0x3	WA	4
.sbss	NOBITS	0x1001b6b8	0xb6b8	0x90	0x0	0x3	WA	4
.bss	NOBITS	0x1001b748	0xb6b8	0x41dc	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xb6b8	0x4b	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x10000000	0x10000000	0xb3cc	0xb3cc	6.1331	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xb3d0	0x1001b3d0	0x1001b3d0	0x2e8	0x4554	3.7809	0x6	RW	0x10000	.ctors .dtors .data .sdata .sbss .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 10, 2024 09:50:17.451173067 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:50:17.456191063 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:50:17.456269979 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:50:17.466814041 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:50:17.471765995 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:50:32.478275061 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:50:32.483530998 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:50:56.117906094 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:50:56.118135929 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:51:47.287779093 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:51:47.287969112 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:52:16.147278070 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:52:16.147726059 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:52:31.160361052 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:52:31.165299892 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:53:32.316169977 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:53:32.316431999 CEST	44250	27651	192.168.2.14	154.90.62.142
Oct 10, 2024 09:53:46.182831049 CEST	27651	44250	154.90.62.142	192.168.2.14
Oct 10, 2024 09:53:46.183129072 CEST	44250	27651	192.168.2.14	154.90.62.142

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 10, 2024 09:50:17.434999943 CEST	49260	53	192.168.2.14	116.203.104.203
Oct 10, 2024 09:50:17.445116043 CEST	53	49260	116.203.104.203	192.168.2.14
Oct 10, 2024 09:52:57.511590004 CEST	43174	53	192.168.2.14	1.1.1.1
Oct 10, 2024 09:52:57.511966944 CEST	59998	53	192.168.2.14	1.1.1.1
Oct 10, 2024 09:52:57.518682003 CEST	53	59998	1.1.1.1	192.168.2.14
Oct 10, 2024 09:52:57.519337893 CEST	53	43174	1.1.1.1	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 10, 2024 09:50:17.434999943 CEST	192.168.2.14	116.203.104.203	0xf73	Standard query (0)	kr2ddnsnet.dyn	A (IP address)	IN (0x0001)	false
Oct 10, 2024 09:52:57.511590004 CEST	192.168.2.14	1.1.1.1	0x6bd6	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Oct 10, 2024 09:52:57.511966944 CEST	192.168.2.14	1.1.1.1	0x5fef	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	Address	Type	Class	DNS over HTTPS
Oct 10, 2024 09:50:17.445116043 CEST	116.203.104.203	192.168.2.14	0xf73	No error (0)	kr2ddnsnet.dyn	154.90.62.142	A (IP address)	IN (0x0001)	false
Oct 10, 2024 09:52:57.519337893 CEST	1.1.1.1	192.168.2.14	0x6bd6	No error (0)	daisy.ubuntu.com	162.213.35.24	A (IP address)	IN (0x0001)	false
Oct 10, 2024 09:52:57.519337893 CEST	1.1.1.1	192.168.2.14	0x6bd6	No error (0)	daisy.ubuntu.com	162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: na.elf PID: 5483, Parent PID: 5408

General

Start time (UTC):	07:50:15
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	5388968 bytes
MD5 hash:	ae65271c943d3451b7f026d1fadccea6

Chronological Activities

Analysis Process: na.elf PID: 5485, Parent PID: 5483

General

Start time (UTC):	07:50:16
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	5388968 bytes
MD5 hash:	ae65271c943d3451b7f026d1fadccea6

Chronological Activities

Analysis Process: na.elf PID: 5487, Parent PID: 5483

General

Start time (UTC):	07:50:16
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	5388968 bytes
MD5 hash:	ae65271c943d3451b7f026d1fadccea6

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 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 communicate using a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088or port 587as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report na.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Malware Analysis System Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: na.elf PID: 5483, Parent PID: 5408

General

Chronological Activities

Analysis Process: na.elf PID: 5485, Parent PID: 5483

General

Chronological Activities

Analysis Process: na.elf PID: 5487, Parent PID: 5483

General

Chronological Activities

Linux Analysis Report
na.elf