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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1528911
MD5:	de349a29d1ff32a2136c78e37ad46941
SHA1:	47de71685b8e2a5515790aa6e55fc6db7ed0258d
SHA256:	112644990cf4937a2656b3248a2f3cd2461a90f50331091239bbaa99e7413595
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	52
Range:	0 - 100
Whitelisted:	false

Signatures

Opens /sys/class/net/* files useful for querying network interface information

Performs DNS TXT record lookups

Sample deletes itself

Detected TCP or UDP traffic on non-standard ports

Sample has stripped symbol table

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:	1528911
Start date and time:	2024-10-08 12:58:11 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 33s
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.spyw.evad.linELF@0/0@1/0

Runtime Messages

Command:	/tmp/na.elf
PID:	5426
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	Firmware update in progress
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 5426, Parent: 5348, MD5: ae65271c943d3451b7f026d1fadccea6) Arguments: /tmp/na.elf

na.elf New Fork (PID: 5430, Parent: 5426)

na.elf New Fork (PID: 5432, Parent: 5430)

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

Networking

Opens /sys/class/net/* files useful for querying network interface information

Source: /tmp/na.elf (PID: 5430)	Opens: /sys/class/net/	Jump to behavior
Source: /tmp/na.elf (PID: 5430)	Opens: /sys/class/net/lo/address	Jump to behavior
Source: /tmp/na.elf (PID: 5430)	Opens: /sys/class/net/ens160/address	Jump to behavior
Source: /tmp/na.elf (PID: 5430)	Opens: /sys/class/net/ens160/flags	Jump to behavior
Source: /tmp/na.elf (PID: 5430)	Opens: /sys/class/net/ens160/carrier	Jump to behavior

Source: global traffic

TCP traffic: 192.168.2.13:55260 -> 5.230.122.80:7000

Source: global traffic

TCP traffic: 192.168.2.13:48202 -> 185.125.190.26:443

Source: unknown	TCP traffic detected without corresponding DNS query: 5.230.122.80
Source: unknown	TCP traffic detected without corresponding DNS query: 5.230.122.80
Source: unknown	TCP traffic detected without corresponding DNS query: 5.230.122.80
Source: unknown	TCP traffic detected without corresponding DNS query: 5.230.122.80
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown	TCP traffic detected without corresponding DNS query: 5.230.122.80
Source: unknown	UDP traffic detected without corresponding DNS query: 172.217.192.127
Source: unknown	UDP traffic detected without corresponding DNS query: 185.181.61.24

Source: global traffic

DNS traffic detected: DNS query: iranistrash.libre

Source: unknown

Network traffic detected: HTTP traffic on port 48202 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal52.spyw.evad.linELF@0/0@1/0

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/na.elf (PID: 5426)

File: /tmp/na.elf

Jump to behavior

Source: /tmp/na.elf (PID: 5426)	Queries kernel information via 'uname':			Jump to behavior
Source: /tmp/na.elf (PID: 5430)	Queries kernel information via 'uname':			Jump to behavior

Source: na.elf, 5426.1.00007ffd2a42d000.00007ffd2a44e000.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, 5426.1.000055d6a2f0e000.000055d6a2fbe000.rw-.sdmp	Binary or memory string: !/etc/qemu-binfmt/ppc1
Source: na.elf, 5426.1.000055d6a2f0e000.000055d6a2fbe000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/ppc
Source: na.elf, 5426.1.00007ffd2a42d000.00007ffd2a44e000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-ppc

HIPS / PFW / Operating System Protection Evasion

Performs DNS TXT record lookups

Source: Traffic

DNS traffic detected: queries for: iranistrash.libre

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	1 File Deletion	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Non-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

⊘No Antivirus matches

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
iranistrash.libre	unknown	unknown	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
185.125.190.26	unknown	United Kingdom	41231	CANONICAL-ASGB	false
5.230.122.80	unknown	Germany	12586	ASGHOSTNETDE	false
172.217.192.127	unknown	United States	15169	GOOGLEUS	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.125.190.26	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
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	x86.elf	Get hash	malicious	Unknown	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Unknown	Browse
5.230.122.80	SecuriteInfo.com.ELF.Mirai-CVD.30330.5069.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-CVD.31968.3467.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-CVD.11330.22523.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-CVD.17384.13664.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-CVD.12952.14309.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-CVD.5487.13505.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-COW.6055.9040.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-COW.15022.10577.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-CVD.15130.25224.elf	Get hash	malicious	Unknown	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
ASGHOSTNETDE	SecuriteInfo.com.ELF.Mirai-CVD.30330.5069.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-CVD.31968.3467.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-CVD.11330.22523.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-CVD.17384.13664.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-CVD.12952.14309.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-CVD.5487.13505.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-COW.6055.9040.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-COW.15022.10577.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	SecuriteInfo.com.ELF.Mirai-CVD.15130.25224.elf	Get hash	malicious	Unknown	Browse	5.230.118.247
	dMCIAXJOD1.elf	Get hash	malicious	Unknown	Browse	5.230.228.46
CANONICAL-ASGB	na.elf	Get hash	malicious	Unknown	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	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	185.125.190.26
	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	185.125.190.26

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):	6.239155687773243
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	66'548 bytes
MD5:	de349a29d1ff32a2136c78e37ad46941
SHA1:	47de71685b8e2a5515790aa6e55fc6db7ed0258d
SHA256:	112644990cf4937a2656b3248a2f3cd2461a90f50331091239bbaa99e7413595
SHA512:	7cf0837cfe0774f9595432ea0d17abc6aed5930e2039b13f99c8467f12445ae396a2932ebda19c77b1cf1cc32d3b687a61065038a3563c6871930abf6f5a456a
SSDEEP:	1536:Om3r3k3M30IlWCt/WKvDXkdvp5MJyElyBG2jGHnWbNSL4pvw:Om3r3k3M3PgUWK7XkZMtlyBG2jGHWhSr
TLSH:	5E535C42722C0C57D1A65AB4393F27E0D3EEF6A024F0BB89255FAB4AC675D751082EDC
File Content Preview:	.ELF...........................4.........4. ...(...........................................................P........dt.Q.............................!..\|......$H...H..9...$8!. \|...N.. .!..\|.......?.............../...@..\?........+../...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:	66028
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	0x10000094	0x94	0x24	0x0	0x6	AX	4
.text	PROGBITS	0x100000b8	0xb8	0xf490	0x0	0x6	AX	4
.fini	PROGBITS	0x1000f548	0xf548	0x20	0x0	0x6	AX	4
.rodata	PROGBITS	0x1000f568	0xf568	0x770	0x0	0x2	A	4
.eh_frame	PROGBITS	0x1000fcd8	0xfcd8	0x4	0x0	0x2	A	4
.ctors	PROGBITS	0x10010000	0x10000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x10010008	0x10008	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x10010018	0x10018	0x158	0x0	0x3	WA	8
.sdata	PROGBITS	0x10010170	0x10170	0x24	0x0	0x3	WA	4
.sbss	NOBITS	0x10010194	0x10194	0x7c	0x0	0x3	WA	4
.bss	NOBITS	0x10010210	0x10194	0x440	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x10194	0x55	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	0xfcdc	0xfcdc	6.3258	0x5	R E	0x10000	.init .text .fini .rodata .eh_frame
LOAD	0x10000	0x10010000	0x10010000	0x194	0x650	1.2475	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 8, 2024 12:59:00.989759922 CEST	55260	7000	192.168.2.13	5.230.122.80
Oct 8, 2024 12:59:00.994600058 CEST	7000	55260	5.230.122.80	192.168.2.13
Oct 8, 2024 12:59:00.994647026 CEST	55260	7000	192.168.2.13	5.230.122.80
Oct 8, 2024 12:59:00.995063066 CEST	55260	7000	192.168.2.13	5.230.122.80
Oct 8, 2024 12:59:00.999876976 CEST	7000	55260	5.230.122.80	192.168.2.13
Oct 8, 2024 12:59:01.643682003 CEST	7000	55260	5.230.122.80	192.168.2.13
Oct 8, 2024 12:59:01.643809080 CEST	55260	7000	192.168.2.13	5.230.122.80
Oct 8, 2024 12:59:06.913202047 CEST	48202	443	192.168.2.13	185.125.190.26
Oct 8, 2024 12:59:38.657291889 CEST	48202	443	192.168.2.13	185.125.190.26
Oct 8, 2024 13:00:21.724314928 CEST	55260	7000	192.168.2.13	5.230.122.80
Oct 8, 2024 13:00:21.729512930 CEST	7000	55260	5.230.122.80	192.168.2.13

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 8, 2024 12:59:00.353809118 CEST	21140	3478	192.168.2.13	172.217.192.127
Oct 8, 2024 12:59:00.944209099 CEST	3478	21140	172.217.192.127	192.168.2.13
Oct 8, 2024 12:59:00.954864979 CEST	49802	53	192.168.2.13	185.181.61.24
Oct 8, 2024 12:59:00.988173962 CEST	53	49802	185.181.61.24	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 8, 2024 12:59:00.954864979 CEST	192.168.2.13	185.181.61.24	0xd19f	Standard query (0)	iranistrash.libre	16	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Oct 8, 2024 12:59:00.988173962 CEST	185.181.61.24	192.168.2.13	0xd19f	No error (0)	iranistrash.libre			TXT (Text strings)	IN (0x0001)	false

System Behavior

Analysis Process: na.elf PID: 5426, Parent PID: 5348

General

Start time (UTC):	10:58:56
Start date (UTC):	08/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	5388968 bytes
MD5 hash:	ae65271c943d3451b7f026d1fadccea6

Chronological Activities

Analysis Process: na.elf PID: 5430, Parent PID: 5426

General

Start time (UTC):	10:58:58
Start date (UTC):	08/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	5388968 bytes
MD5 hash:	ae65271c943d3451b7f026d1fadccea6

Chronological Activities

Analysis Process: na.elf PID: 5432, Parent PID: 5430

General

Start time (UTC):	10:58:59
Start date (UTC):	08/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	5388968 bytes
MD5 hash:	ae65271c943d3451b7f026d1fadccea6

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 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

Networking

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

HIPS / PFW / Operating System Protection 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: 5426, Parent PID: 5348

General

Chronological Activities

Analysis Process: na.elf PID: 5430, Parent PID: 5426

General

Chronological Activities

Analysis Process: na.elf PID: 5432, Parent PID: 5430

General

Chronological Activities

Linux Analysis Report
na.elf