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Linux Analysis Report
abc123.elf

Overview

General Information

Sample name:	abc123.elf
Analysis ID:	1577978
MD5:	127fa3cdeb157ac8f59a6d87e4578d46
SHA1:	c4d507e25b5bc786f6a1f2de70188d2b95f20f9c
SHA256:	bb5a43d24da50be95c1f16318ee7a5a9bee908415844675146d5f0b4867aada2
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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:	1577978
Start date and time:	2024-12-19 00:32:08 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 44s
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:	abc123.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0

Warnings

VT rate limit hit for: abc123.elf

Runtime Messages

Command:	/tmp/abc123.elf
PID:	6227
Exit Code:	135
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

abc123.elf (PID: 6227, Parent: 6142, MD5: 127fa3cdeb157ac8f59a6d87e4578d46) Arguments: /tmp/abc123.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

AV Detection

Multi AV Scanner detection for submitted file

Source: abc123.elf

ReversingLabs: Detection: 21%

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	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: mal48.linELF@0/0@0/0

Source: abc123.elf

Submission file: segment LOAD with 7.7901 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
abc123.elf	21%	ReversingLabs	Linux.Trojan.Multiverze

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	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse
	mips64.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse
	m68k.elf	Get hash	malicious	Mirai	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse
	mipsel.elf	Get hash	malicious	Mirai	Browse
	sparc.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse
	mips64.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse
	m68k.elf	Get hash	malicious	Mirai	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse
	mipsel.elf	Get hash	malicious	Mirai	Browse
	sparc.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	mips64.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	m68k.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	mipsel.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	mips64.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	m68k.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	mipsel.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
INIT7CH	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	mips64.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	m68k.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	mipsel.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	sparc.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):	7.790114030539711
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	abc123.elf
File size:	16'276'947 bytes
MD5:	127fa3cdeb157ac8f59a6d87e4578d46
SHA1:	c4d507e25b5bc786f6a1f2de70188d2b95f20f9c
SHA256:	bb5a43d24da50be95c1f16318ee7a5a9bee908415844675146d5f0b4867aada2
SHA512:	60043bdb5e8030559a7e47b5af44c88a2a8238eca52dcc65309b30e9367d6472ac3cb856017c02b4699742567a476667c7f65b71a92b608c698704d168d791e8
SSDEEP:	393216:h4uNnHrjk+U1igvssyw2spaLa2lFuTXNNpSjFuCz4Z5x6YXcGxEM36XjNS:hBLY+UMsTpOmXN3SjFT2I7YELNS
TLSH:	8BF633AB4452B5F234827C049B28B8C16A443C135DA9F9611D83DFE9C97FDDAD2CA70B
File Content Preview:	.ELF..............>.......B.....@...................@.8...@.......................@.......@.....:.......:.................................B.......B..............1h.............Q.td........................................................YTS...........g...g

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:	0x142d298
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	0x102db3a	0x102db3a	7.7901	0x5	R E	0x1000
LOAD	0x0	0x142e000	0x142e000	0x0	0x6831d0	0.0000	0x6	RW	0x1000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x8

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Dec 19, 2024 00:32:49.417426109 CET	43928	443	192.168.2.23	91.189.91.42
Dec 19, 2024 00:32:55.048782110 CET	42836	443	192.168.2.23	91.189.91.43
Dec 19, 2024 00:32:55.816456079 CET	42516	80	192.168.2.23	109.202.202.202
Dec 19, 2024 00:33:09.894576073 CET	43928	443	192.168.2.23	91.189.91.42
Dec 19, 2024 00:33:22.181045055 CET	42836	443	192.168.2.23	91.189.91.43
Dec 19, 2024 00:33:26.276386023 CET	42516	80	192.168.2.23	109.202.202.202
Dec 19, 2024 00:33:50.848850965 CET	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: abc123.elf PID: 6227, Parent PID: 6142

General

Start time (UTC):	23:32:49
Start date (UTC):	18/12/2024
Path:	/tmp/abc123.elf
Arguments:	/tmp/abc123.elf
File size:	16276947 bytes
MD5 hash:	127fa3cdeb157ac8f59a6d87e4578d46

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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report abc123.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

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: abc123.elf PID: 6227, Parent PID: 6142

General

Linux Analysis Report
abc123.elf