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Linux Analysis Report
c0r0n4x.x86.elf

Overview

General Information

Sample name:	c0r0n4x.x86.elf
Analysis ID:	1541838
MD5:	0f7262991acda367edd55851a92db844
SHA1:	c6a75ccbdcc5903f64163e405c43ad778b245f30
SHA256:	6709c2f8f71a2e62583833fd8ce075f94f7a7920e983a1679bf22e4b701845bf
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	68
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Machine Learning detection for sample

Sample has stripped symbol table

Yara signature match

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1541838
Start date and time:	2024-10-25 08:28:12 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 25s
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:	c0r0n4x.x86.elf
Detection:	MAL
Classification:	mal68.linELF@0/0@2/0

Warnings

VT rate limit hit for: c0r0n4x.x86.elf

Runtime Messages

Command:	/tmp/c0r0n4x.x86.elf
PID:	5485
Exit Code:	136
Exit Code Info:	SIGFPE (8) Floating-point exception
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

c0r0n4x.x86.elf (PID: 5485, Parent: 5410, MD5: 0f7262991acda367edd55851a92db844) Arguments: /tmp/c0r0n4x.x86.elf

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
c0r0n4x.x86.elf	Linux_Trojan_Mirai_b14f4c5d	unknown	unknown	0x5340:$a: 53 31 DB 8B 4C 24 0C 8B 54 24 08 83 F9 01 76 15 66 8B 02 83 E9 02 25 FF FF 00 00 83 C2 02 01 C3 83 F9 01 77 EB 49 75 05 0F BE 02 01 C3
c0r0n4x.x86.elf	Linux_Trojan_Mirai_88de437f	unknown	unknown	0x99a2:$a: 24 08 8B 4C 24 04 85 D2 74 0D 31 C0 89 F6 C6 04 08 00 40 39 D0
c0r0n4x.x86.elf	Linux_Trojan_Mirai_ae9d0fa6	unknown	unknown	0x192:$a: 83 EC 04 8A 44 24 18 8B 5C 24 14 88 44 24 03 8A 44 24 10 25 FF 00
c0r0n4x.x86.elf	Linux_Trojan_Mirai_cc93863b	unknown	unknown	0xa3e2:$a: C3 57 8B 44 24 0C 8B 4C 24 10 8B 7C 24 08 F3 AA 8B 44 24 08
c0r0n4x.x86.elf	Linux_Trojan_Mirai_8aa7b5d3	unknown	unknown	0x9972:$a: 8B 4C 24 14 8B 74 24 0C 8B 5C 24 10 85 C9 74 0D 31 D2 8A 04 1A 88

Memory Dumps

Source	Rule	Description	Author	Strings
5485.1.0000000008048000.0000000008056000.r-x.sdmp	Linux_Trojan_Mirai_b14f4c5d	unknown	unknown	0x5340:$a: 53 31 DB 8B 4C 24 0C 8B 54 24 08 83 F9 01 76 15 66 8B 02 83 E9 02 25 FF FF 00 00 83 C2 02 01 C3 83 F9 01 77 EB 49 75 05 0F BE 02 01 C3
5485.1.0000000008048000.0000000008056000.r-x.sdmp	Linux_Trojan_Mirai_88de437f	unknown	unknown	0x99a2:$a: 24 08 8B 4C 24 04 85 D2 74 0D 31 C0 89 F6 C6 04 08 00 40 39 D0
5485.1.0000000008048000.0000000008056000.r-x.sdmp	Linux_Trojan_Mirai_ae9d0fa6	unknown	unknown	0x192:$a: 83 EC 04 8A 44 24 18 8B 5C 24 14 88 44 24 03 8A 44 24 10 25 FF 00
5485.1.0000000008048000.0000000008056000.r-x.sdmp	Linux_Trojan_Mirai_cc93863b	unknown	unknown	0xa3e2:$a: C3 57 8B 44 24 0C 8B 4C 24 10 8B 7C 24 08 F3 AA 8B 44 24 08
5485.1.0000000008048000.0000000008056000.r-x.sdmp	Linux_Trojan_Mirai_8aa7b5d3	unknown	unknown	0x9972:$a: 8B 4C 24 14 8B 74 24 0C 8B 5C 24 10 85 C9 74 0D 31 D2 8A 04 1A 88

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: c0r0n4x.x86.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: c0r0n4x.x86.elf

ReversingLabs: Detection: 71%

Machine Learning detection for sample

Source: c0r0n4x.x86.elf

Joe Sandbox ML: detected

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: daisy.ubuntu.com

System Summary

Malicious sample detected (through community Yara rule)

Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_b14f4c5d Author: unknown
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_ae9d0fa6 Author: unknown
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 Author: unknown
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_b14f4c5d Author: unknown
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_ae9d0fa6 Author: unknown
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 Author: unknown

Source: ELF static info symbol of initial sample

.symtab present: no

Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_b14f4c5d os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = a70d052918dd2fbc66db241da6438015130f0fb6929229bfe573546fe98da817, id = b14f4c5d-054f-46e6-9fa8-3588f1ef68b7, last_modified = 2021-09-16
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_ae9d0fa6 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = ca2bf2771844bec95563800d19a35dd230413f8eff0bd44c8ab0b4c596f81bfc, id = ae9d0fa6-be06-4656-9b13-8edfc0ee9e71, last_modified = 2021-09-16
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: c0r0n4x.x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_b14f4c5d os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = a70d052918dd2fbc66db241da6438015130f0fb6929229bfe573546fe98da817, id = b14f4c5d-054f-46e6-9fa8-3588f1ef68b7, last_modified = 2021-09-16
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_ae9d0fa6 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = ca2bf2771844bec95563800d19a35dd230413f8eff0bd44c8ab0b4c596f81bfc, id = ae9d0fa6-be06-4656-9b13-8edfc0ee9e71, last_modified = 2021-09-16
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: 5485.1.0000000008048000.0000000008056000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26

Source: classification engine

Classification label: mal68.linELF@0/0@2/0

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	Direct Volume Access	OS Credential Dumping	System Service Discovery	Remote Services	Data from Local System	1 Non-Application Layer Protocol	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

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label
c0r0n4x.x86.elf	71%	ReversingLabs	Linux.Trojan.Mirai
c0r0n4x.x86.elf	100%	Avira	EXP/ELF.Mirai.Bootnet.o
c0r0n4x.x86.elf	100%	Joe Sandbox ML

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
daisy.ubuntu.com	162.213.35.25	true	false		unknown

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	mips.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25
	armv7l.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	mipsel.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	la.bot.arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	la.bot.sparc.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	la.bot.sparc.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	la.bot.arm.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	la.bot.arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	la.bot.mips.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	la.bot.sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.25

ASNs

⊘No context

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, Intel 80386, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.480985462092308
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	c0r0n4x.x86.elf
File size:	56'064 bytes
MD5:	0f7262991acda367edd55851a92db844
SHA1:	c6a75ccbdcc5903f64163e405c43ad778b245f30
SHA256:	6709c2f8f71a2e62583833fd8ce075f94f7a7920e983a1679bf22e4b701845bf
SHA512:	d92e68f6aa5e2b129aeb4b6ec5172918afcd38177714bfcfddb30cced6d735fb67f821dff4e18f76e4039c28f91d8f853f9e178e066a6298a19a58f67facdcaa
SSDEEP:	1536:PgkeLet381cqYr1J2d0WxmfPMaUJ8XzDf5aiONQ9gkb8:PgkeLet381cV1k0WYfPMvJ8RxOaiD
TLSH:	28434AC5A543DAF8EC1545713037AB328636F03E322EFA9BD3C5AA73A945701EA4724D
File Content Preview:	.ELF....................d...4...p.......4. ...(..............................................h...h..................Q.td............................U..S............h........[]...$.............U......=@i...t..5.....h......h......u........t....h.X..........

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Intel 80386
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8048164
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	55664
Section Header Size:	40
Number of Section Headers:	10
Header String Table Index:	9

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8048094	0x94	0x1c	0x0	0x6	AX	1
.text	PROGBITS	0x80480b0	0xb0	0xc636	0x0	0x6	AX	16
.fini	PROGBITS	0x80546e6	0xc6e6	0x17	0x0	0x6	AX	1
.rodata	PROGBITS	0x8054700	0xc700	0x11a0	0x0	0x2	A	32
.ctors	PROGBITS	0x80568a4	0xd8a4	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x80568ac	0xd8ac	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x80568c4	0xd8c4	0x6c	0x0	0x3	WA	4
.bss	NOBITS	0x8056940	0xd930	0x680	0x0	0x3	WA	32
.shstrtab	STRTAB	0x0	0xd930	0x3e	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8048000	0x8048000	0xd8a0	0xd8a0	6.5047	0x5	R E	0x1000	.init .text .fini .rodata
LOAD	0xd8a4	0x80568a4	0x80568a4	0x8c	0x71c	1.7408	0x6	RW	0x1000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Network Behavior

Network Port Distribution

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 25, 2024 08:29:04.201816082 CEST	36222	53	192.168.2.14	1.1.1.1
Oct 25, 2024 08:29:04.201864958 CEST	40185	53	192.168.2.14	1.1.1.1
Oct 25, 2024 08:29:04.209755898 CEST	53	40185	1.1.1.1	192.168.2.14
Oct 25, 2024 08:29:04.210295916 CEST	53	36222	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 25, 2024 08:29:04.201816082 CEST	192.168.2.14	1.1.1.1	0xbd28	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Oct 25, 2024 08:29:04.201864958 CEST	192.168.2.14	1.1.1.1	0x8c37	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Oct 25, 2024 08:29:04.210295916 CEST	1.1.1.1	192.168.2.14	0xbd28	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Oct 25, 2024 08:29:04.210295916 CEST	1.1.1.1	192.168.2.14	0xbd28	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: c0r0n4x.x86.elf PID: 5485, Parent PID: 5410

General

Start time (UTC):	06:29:02
Start date (UTC):	25/10/2024
Path:	/tmp/c0r0n4x.x86.elf
Arguments:	/tmp/c0r0n4x.x86.elf
File size:	56064 bytes
MD5 hash:	0f7262991acda367edd55851a92db844

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

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Warning!

Linux Analysis Report c0r0n4x.x86.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted 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

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: c0r0n4x.x86.elf PID: 5485, Parent PID: 5410

General

Linux Analysis Report
c0r0n4x.x86.elf