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Linux Analysis Report
demon.mips.elf

Overview

General Information

Sample name:	demon.mips.elf
Analysis ID:	1620047
MD5:	7c0d16586d4f8895310b47e248988c11
SHA1:	b932695606a6bf4ddd69c09c13bf8e9395c43dc6
SHA256:	9c44a95da8d114791745754b1c4e1def9741168bccb51ab10874cda2ea755b42
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Executes the "rm" command used to delete files or directories

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:	42.0.0 Malachite
Analysis ID:	1620047
Start date and time:	2025-02-20 16:06:20 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 21s
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:	demon.mips.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/demon.mips.elf
PID:	5483
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

dash New Fork (PID: 5470, Parent: 3634)

rm (PID: 5470, Parent: 3634, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Zs4qYd95JR /tmp/tmp.hrX5y14pyC /tmp/tmp.YL1d4ZySU7

dash New Fork (PID: 5471, Parent: 3634)

rm (PID: 5471, Parent: 3634, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Zs4qYd95JR /tmp/tmp.hrX5y14pyC /tmp/tmp.YL1d4ZySU7

demon.mips.elf (PID: 5483, Parent: 5401, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/demon.mips.elf

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: demon.mips.elf

ReversingLabs: Detection: 15%

Source: global traffic

TCP traffic: 192.168.2.14:46540 -> 185.125.190.26:443

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	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: unknown

Network traffic detected: HTTP traffic on port 46540 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: /usr/bin/dash (PID: 5470)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Zs4qYd95JR /tmp/tmp.hrX5y14pyC /tmp/tmp.YL1d4ZySU7			Jump to behavior
Source: /usr/bin/dash (PID: 5471)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Zs4qYd95JR /tmp/tmp.hrX5y14pyC /tmp/tmp.YL1d4ZySU7			Jump to behavior

Source: /tmp/demon.mips.elf (PID: 5483)

Queries kernel information via 'uname':

Jump to behavior

Source: demon.mips.elf, 5483.1.00007ffeb404a000.00007ffeb406b000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/demon.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/demon.mips.elf
Source: demon.mips.elf, 5483.1.00005617cf888000.00005617cf90f000.rw-.sdmp	Binary or memory string: V!/etc/qemu-binfmt/mips
Source: demon.mips.elf, 5483.1.00005617cf888000.00005617cf90f000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: demon.mips.elf, 5483.1.00007ffeb404a000.00007ffeb406b000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: demon.mips.elf, 5483.1.00007ffeb404a000.00007ffeb406b000.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	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-Application Layer Protocol	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	2 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact

Malware Configuration

⊘No configs have been found

Behavior Graph

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Legend:

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

Screenshots

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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	Link
demon.mips.elf	16%	ReversingLabs	Linux.Trojan.Mirai

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	162.213.35.25	true	false		high

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	Flag	ASN	ASN Name	Malicious
185.125.190.26	unknown	United Kingdom		41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.125.190.26	mips.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	b3.elf	Get hash	malicious	Unknown	Browse
	b4.elf	Get hash	malicious	Unknown	Browse
	one.elf	Get hash	malicious	Unknown	Browse
	ppc.elf	Get hash	malicious	Unknown	Browse
	sshd.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	demon.sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	demon.arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	demon.ppc.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	.i.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	dlr.spc.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	dlr.m68k.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	dlr.ppc.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	arm.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	mips.elf	Get hash	malicious	Unknown	Browse	162.213.35.24

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	demon.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	dlr.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	i686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	ppc.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	mips.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	sh4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	aarch64.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	spc.elf	Get hash	malicious	Unknown	Browse	91.189.91.42

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), statically linked, stripped
Entropy (8bit):	5.43149561929042
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	demon.mips.elf
File size:	59'684 bytes
MD5:	7c0d16586d4f8895310b47e248988c11
SHA1:	b932695606a6bf4ddd69c09c13bf8e9395c43dc6
SHA256:	9c44a95da8d114791745754b1c4e1def9741168bccb51ab10874cda2ea755b42
SHA512:	bfaf4fe60fe3afed63613ad5fc1b081a2f94e11260d0e0baf3ec7447a40d3945671a469be77d6b18a250c369ac533d8400daac8b0772ba45737be4d14abde02f
SSDEEP:	768:1uOwtAUf7Rih3vD1WE05XQtmKQbrt33SNoF0pwCdWiz1FlzkpDsLYUhzIJ:zgRihfDEQAKzooxaDsLYUl6
TLSH:	E243A75E3A218FEDF15E833187B75E25A76923D223E1C684E29CD5042F7034E981F7A9
File Content Preview:	.ELF.....................@.p...4.........4. ...(.............@...@...........................D...D........,.........dt.Q............................<...'.b,...!'.......................<...'.b....!........'9... ......................<...'.a....!... ....'9.

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	MIPS R3000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x400270
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	59124
Section Header Size:	40
Number of Section Headers:	14
Header String Table Index:	13

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x400094	0x94	0x8c	0x0	0x6	AX	4
.text	PROGBITS	0x400120	0x120	0xc5d0	0x0	0x6	AX	16
.fini	PROGBITS	0x40c6f0	0xc6f0	0x5c	0x0	0x6	AX	4
.rodata	PROGBITS	0x40c750	0xc750	0x1640	0x0	0x2	A	16
.ctors	PROGBITS	0x44e004	0xe008	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x44e00c	0xe010	0x8	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x44e018	0xe01c	0xc	0x0	0x3	WA	4
.data	PROGBITS	0x44e030	0xe034	0x294	0x0	0x3	WA	16
.got	PROGBITS	0x44e2d0	0xe2d4	0x3bc	0x4	0x10000003	WAp	16
.sbss	NOBITS	0x44e68c	0xe690	0x20	0x0	0x10000003	WAp	4
.bss	NOBITS	0x44e6b0	0xe690	0x2628	0x0	0x3	WA	16
.mdebug.abi32	PROGBITS	0x9b4	0xe690	0x0	0x0	0x0		1
.shstrtab	STRTAB	0x0	0xe690	0x64	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x400000	0x400000	0xdd90	0xdd90	5.4956	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xe004	0x44e004	0x44e000	0x68c	0x12cd4	4.2471	0x6	RW	0x10000	.ctors .dtors .data.rel.ro .data .got .sbss .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 4
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Feb 20, 2025 16:07:12.110752106 CET	46540	443	192.168.2.14	185.125.190.26
Feb 20, 2025 16:07:42.317850113 CET	46540	443	192.168.2.14	185.125.190.26

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Feb 20, 2025 16:07:02.792834997 CET	54368	53	192.168.2.14	1.1.1.1
Feb 20, 2025 16:07:02.792834997 CET	48226	53	192.168.2.14	1.1.1.1
Feb 20, 2025 16:07:02.801196098 CET	53	48226	1.1.1.1	192.168.2.14
Feb 20, 2025 16:07:02.801529884 CET	53	54368	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
Feb 20, 2025 16:07:02.792834997 CET	192.168.2.14	1.1.1.1	0x696	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Feb 20, 2025 16:07:02.792834997 CET	192.168.2.14	1.1.1.1	0x2c1e	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
Feb 20, 2025 16:07:02.801529884 CET	1.1.1.1	192.168.2.14	0x696	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Feb 20, 2025 16:07:02.801529884 CET	1.1.1.1	192.168.2.14	0x696	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: dash PID: 5470, Parent PID: 3634

General

Start time (UTC):	15:06:51
Start date (UTC):	20/02/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5470, Parent PID: 3634

General

Start time (UTC):	15:06:51
Start date (UTC):	20/02/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.Zs4qYd95JR /tmp/tmp.hrX5y14pyC /tmp/tmp.YL1d4ZySU7
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5471, Parent PID: 3634

General

Start time (UTC):	15:06:51
Start date (UTC):	20/02/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5471, Parent PID: 3634

General

Start time (UTC):	15:06:51
Start date (UTC):	20/02/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.Zs4qYd95JR /tmp/tmp.hrX5y14pyC /tmp/tmp.YL1d4ZySU7
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: demon.mips.elf PID: 5483, Parent PID: 5401

General

Start time (UTC):	15:07:00
Start date (UTC):	20/02/2025
Path:	/tmp/demon.mips.elf
Arguments:	/tmp/demon.mips.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

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 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 demon.mips.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

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

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: dash PID: 5470, Parent PID: 3634

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5470, Parent PID: 3634

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 5471, Parent PID: 3634

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5471, Parent PID: 3634

General

File Activities

File Opened

File Deleted

Linux Analysis Report
demon.mips.elf