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Linux Analysis Report
mips.elf

Overview

General Information

Sample name:	mips.elf
Analysis ID:	1647483
MD5:	cdc019b0f5fdf3dd708f0bd603e2617a
SHA1:	f3010605eada9c7f4ef66c231faf1dd81cb4dab7
SHA256:	e9b964617446602fcd99482bafb7670ec659871524d4a2ad7860d0eaad3e0b64
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Found strings indicative of a multi-platform dropper

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1647483
Start date and time:	2025-03-24 22:03:58 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 19s
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:	mips.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/mips.elf
PID:	5433
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

mips.elf (PID: 5433, Parent: 5357, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/mips.elf

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Spreading
• Networking
• System Summary
• Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: mips.elf

Avira: detected

Source: mips.elf

String: wgettftpcurlftp

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

Source: classification engine

Classification label: mal48.linELF@0/0@2/0

Source: /tmp/mips.elf (PID: 5433)

Queries kernel information via 'uname':

Jump to behavior

Source: mips.elf, 5433.1.000055bcfb2a3000.000055bcfb32a000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/mips
Source: mips.elf, 5433.1.000055bcfb2a3000.000055bcfb32a000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: mips.elf, 5433.1.00007ffc16f5a000.00007ffc16f7b000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/mips.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/mips.elf
Source: mips.elf, 5433.1.00007ffc16f5a000.00007ffc16f7b000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: mips.elf, 5433.1.00007ffc16f5a000.00007ffc16f7b000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

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-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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
mips.elf	6%	ReversingLabs	Linux.Trojan.Mirai
mips.elf	100%	Avira	LINUX/GM.Mirai.XA

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	false		high

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	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	i.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	bot.arm6.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	i.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	sshd.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	tftp.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 MSB executable, MIPS, MIPS-I version 1 (SYSV), dynamically linked, not stripped
Entropy (8bit):	5.4192223456013675
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	mips.elf
File size:	717'600 bytes
MD5:	cdc019b0f5fdf3dd708f0bd603e2617a
SHA1:	f3010605eada9c7f4ef66c231faf1dd81cb4dab7
SHA256:	e9b964617446602fcd99482bafb7670ec659871524d4a2ad7860d0eaad3e0b64
SHA512:	f23abf72aeecb80a3a510ee68caa37ace5891fbe3caef983bd8b8c32a8f3e87b919e3c77a1e86a5a90d9071e2b2c7a51dc249b8e17b96859ad581f45103a1f19
SSDEEP:	6144:ptyWVnrSpEfq8+nyGRO+PS1Xf/QtgEJEkeuszUHalFiH1bfkAwBLSMa4p1EuVEgw:pP4x8AcKNRoWMa4p1EuVEr10Gxyzeb7
TLSH:	60E4B70E99219F3FF278833207F3C664A679229723A7F649915CD1245E2434F592FB78
File Content Preview:	.ELF.....................@.`...4.........4. ...(.............@...@.....@...@.................N...N....P....L............................................'.[....!'.......................<...'.[....!... ....'9... ......................<...'.[....!........'9.

Network Behavior

Download Network PCAP: filtered – full

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 24, 2025 22:04:38.839670897 CET	43072	53	192.168.2.13	1.1.1.1
Mar 24, 2025 22:04:38.839728117 CET	50415	53	192.168.2.13	1.1.1.1
Mar 24, 2025 22:04:38.946317911 CET	53	50415	1.1.1.1	192.168.2.13
Mar 24, 2025 22:04:38.946877956 CET	53	43072	1.1.1.1	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 24, 2025 22:04:38.839670897 CET	192.168.2.13	1.1.1.1	0xcee5	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Mar 24, 2025 22:04:38.839728117 CET	192.168.2.13	1.1.1.1	0x2da0	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
Mar 24, 2025 22:04:38.946877956 CET	1.1.1.1	192.168.2.13	0xcee5	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Mar 24, 2025 22:04:38.946877956 CET	1.1.1.1	192.168.2.13	0xcee5	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: mips.elf PID: 5433, Parent PID: 5357

General

Start time (UTC):	21:04:37
Start date (UTC):	24/03/2025
Path:	/tmp/mips.elf
Arguments:	/tmp/mips.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

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 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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Linux Analysis Report mips.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

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Network Behavior

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: mips.elf PID: 5433, Parent PID: 5357

General

File Activities

File Opened

File Read

Process Activities

Signal Sent

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Linux Analysis Report
mips.elf