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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1532416
MD5:	0e1a9b149d5caf5862047f3eed31f360
SHA1:	41648f148716074522ad62cfe0ad4b4d8dc5bc1d
SHA256:	5bdf48dcec43f0b6c0739b8cf6a78441380c3273386a74fd78da5fa5b9bc612c
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	1
Range:	0 - 100
Whitelisted:	false

Signatures

ELF contains segments with high entropy indicating compressed/encrypted content

Sample contains only a LOAD segment without any section mappings

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1532416
Start date and time:	2024-10-13 06:59:56 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 4s
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:	CLEAN
Classification:	clean1.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/na.elf
PID:	6318
Exit Code:	135
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 6318, Parent: 6198, MD5: 0e1a9b149d5caf5862047f3eed31f360) Arguments: /tmp/na.elf

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

There are no malicious signatures, click here to show all signatures.

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

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

Source: LOAD without section mappings

Program segment: 0x400000

Source: classification engine

Classification label: clean1.linELF@0/0@0/0

Source: na.elf

Submission file: segment LOAD with 7.8928 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	1 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	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
na.elf	11%	ReversingLabs	Linux.Trojan.Generic

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

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
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
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
	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
	2Q585VbsPV.elf	Get hash	malicious	Mirai	Browse
	JnC2t6WhUf.elf	Get hash	malicious	Mirai	Browse
	bot.mpsl.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse
	bot.arm6.elf	Get hash	malicious	Mirai, Okiru	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	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
	2Q585VbsPV.elf	Get hash	malicious	Mirai	Browse
	JnC2t6WhUf.elf	Get hash	malicious	Mirai	Browse
	bot.mpsl.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse
	bot.arm6.elf	Get hash	malicious	Mirai, Okiru	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	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
	Rj2IVGj6JJ.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	exCmhB0ruY.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	2Q585VbsPV.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	JnC2t6WhUf.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	bot.arm.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse	185.125.190.26
	bot.mpsl.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse	91.189.91.42
	bot.x86.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
CANONICAL-ASGB	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
	Rj2IVGj6JJ.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	exCmhB0ruY.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	2Q585VbsPV.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	JnC2t6WhUf.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	bot.arm.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse	185.125.190.26
	bot.mpsl.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse	91.189.91.42
	bot.x86.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
INIT7CH	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
	2Q585VbsPV.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	JnC2t6WhUf.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	bot.mpsl.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse	109.202.202.202
	bot.arm6.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, no section header
Entropy (8bit):	7.892839874864215
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	na.elf
File size:	4'769'483 bytes
MD5:	0e1a9b149d5caf5862047f3eed31f360
SHA1:	41648f148716074522ad62cfe0ad4b4d8dc5bc1d
SHA256:	5bdf48dcec43f0b6c0739b8cf6a78441380c3273386a74fd78da5fa5b9bc612c
SHA512:	2bd380afe0b2dfc7feec31297f64b9047ce3329e5ee25ac2e1716361d44716557642ca0fc5b8a1ae291dd2a5f4766675ba970b446a9d74f4f10af1071e42d3d2
SSDEEP:	98304:5UttpS22xvpKgKJG1BHz67hL5jDMJYR1dZyFbBPDSKVzTXZfGXs7+a:iCREgDT29/MJYR1XMPDSKVzTXZ+m
TLSH:	4B2633FD2B7B5BB7FD04E7AD229B0ED294D4934AE9FC4153A78DE2D245788824933900
File Content Preview:	.ELF..............>......=......@...................@.8...@.......................@.......@.....XGy.....XGy..............................P.......P..............................Q.td.....................................................>U.UPX!........0.$.0.$

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:	0xb93de0
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	0x794758	0x794758	7.8928	0x5	R E	0x1000
LOAD	0x0	0xb95000	0xb95000	0x0	0xb29ab0	0.0000	0x6	RW	0x1000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x10

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 13, 2024 07:01:06.460925102 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 13, 2024 07:01:12.092360973 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 13, 2024 07:01:26.426081896 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 13, 2024 07:01:28.474148035 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 13, 2024 07:01:38.712570906 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 13, 2024 07:02:07.380755901 CEST	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: na.elf PID: 6318, Parent PID: 6198

General

Start time (UTC):	05:01:05
Start date (UTC):	13/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	4769483 bytes
MD5 hash:	0e1a9b149d5caf5862047f3eed31f360

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 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

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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

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

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: na.elf PID: 6318, Parent PID: 6198

General

Linux Analysis Report
na.elf