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Linux Analysis Report
telnet.mips.elf

Overview

General Information

Sample name:	telnet.mips.elf
Analysis ID:	1597845
MD5:	a3b5a37083c446403e10a79eba82fe31
SHA1:	21bf9a23e88fa0d8611d420fdd38d2a8af0d84cf
SHA256:	80492921c0ce7e5a0df4ae4a1172ab441d1424d0396ad0b2436327f1da85cf29
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Sample has stripped symbol table

Sample listens on a socket

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1597845
Start date and time:	2025-01-23 18:22:45 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 40s
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:	telnet.mips.elf
Detection:	MAL
Classification:	mal56.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/telnet.mips.elf
PID:	5584
Exit Code:	136
Exit Code Info:	SIGFPE (8) Floating-point exception
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 8 (Floating point exception) - core dumped

Process Tree

system is lnxubuntu20

telnet.mips.elf (PID: 5584, Parent: 5503, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/telnet.mips.elf

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• 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: telnet.mips.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: telnet.mips.elf	ReversingLabs: Detection: 57%
Source: telnet.mips.elf	Virustotal: Detection: 50%			Perma Link

Source: /tmp/telnet.mips.elf (PID: 5584)

Socket: 127.0.0.1:57886

Jump to behavior

Source: global traffic

DNS traffic detected: DNS query: daisy.ubuntu.com

Source: telnet.mips.elf

String found in binary or memory: https://i.imgur.com/0r0MYas.gif

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal56.linELF@0/0@2/0

Source: /tmp/telnet.mips.elf (PID: 5584)

Queries kernel information via 'uname':

Jump to behavior

Source: telnet.mips.elf, 5584.1.0000555a25779000.0000555a25800000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: telnet.mips.elf, 5584.1.0000555a25779000.0000555a25800000.rw-.sdmp	Binary or memory string: x%ZU!/etc/qemu-binfmt/mips
Source: telnet.mips.elf, 5584.1.00007ffc2b1fc000.00007ffc2b21d000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: telnet.mips.elf, 5584.1.00007ffc2b1fc000.00007ffc2b21d000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 8 (Floating point exception) - core dumped
Source: telnet.mips.elf, 5584.1.00007ffc2b1fc000.00007ffc2b21d000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/telnet.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/telnet.mips.elf

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	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
telnet.mips.elf	58%	ReversingLabs	Linux.Trojan.Mirai
telnet.mips.elf	51%	Virustotal		Browse
telnet.mips.elf	100%	Avira	EXP/ELF.Agent.J.8

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

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
https://i.imgur.com/0r0MYas.gif	telnet.mips.elf	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	telnet.arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	telnet.arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	armv4l.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25
	telnet.arm7.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25
	powerpc.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	x86.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	Fantazy.ppc.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	sshd.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	Fantazy.arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.24

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), statically linked, stripped
Entropy (8bit):	5.337129003124066
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	telnet.mips.elf
File size:	51'296 bytes
MD5:	a3b5a37083c446403e10a79eba82fe31
SHA1:	21bf9a23e88fa0d8611d420fdd38d2a8af0d84cf
SHA256:	80492921c0ce7e5a0df4ae4a1172ab441d1424d0396ad0b2436327f1da85cf29
SHA512:	d00c2ae8d4a2c4a91cbfe9ddf0a038d7dbb07780149f2b52cd887e555f3962aadaea115a2faef1738e2cadba22a35589caabbaff179c28ad0ae11761c3f050e1
SSDEEP:	1536:d8k5Sw5G9kpdMrIRrMPvsWcJ75l73yDqHVjFJW:yJTk7Ttl73yDq1hY
TLSH:	1033845D3E329FEDFAAE863487B74E606259339523E1D284D29CE9010E7030D645F7AA
File Content Preview:	.ELF.....................@.`...4...0.....4. ...(.............@...@.....P...P.................D...D.........P........dt.Q............................<...'.A....!'.......................<...'.A....!... ....'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:	0x400260
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	50736
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	0xab90	0x0	0x6	AX	16
.fini	PROGBITS	0x40acb0	0xacb0	0x5c	0x0	0x6	AX	4
.rodata	PROGBITS	0x40ad10	0xad10	0xd40	0x0	0x2	A	16
.ctors	PROGBITS	0x44c000	0xc000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x44c008	0xc008	0x8	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x44c014	0xc014	0x4	0x0	0x3	WA	4
.data	PROGBITS	0x44c020	0xc020	0x258	0x0	0x3	WA	16
.got	PROGBITS	0x44c280	0xc280	0x34c	0x4	0x10000003	WAp	16
.sbss	NOBITS	0x44c5cc	0xc5cc	0x20	0x0	0x10000003	WAp	4
.bss	NOBITS	0x44c5f0	0xc5cc	0x360	0x0	0x3	WA	16
.mdebug.abi32	PROGBITS	0x69c	0xc5cc	0x0	0x0	0x0		1
.shstrtab	STRTAB	0x0	0xc5cc	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	0xba50	0xba50	5.4727	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xc000	0x44c000	0x44c000	0x5cc	0x950	3.8663	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

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 23, 2025 18:23:47.911660910 CET	45162	53	192.168.2.14	8.8.8.8
Jan 23, 2025 18:23:47.916737080 CET	53	45162	8.8.8.8	192.168.2.14
Jan 23, 2025 18:23:47.916810036 CET	45162	53	192.168.2.14	8.8.8.8
Jan 23, 2025 18:23:47.916851997 CET	45162	53	192.168.2.14	8.8.8.8
Jan 23, 2025 18:23:47.916852951 CET	45162	53	192.168.2.14	8.8.8.8
Jan 23, 2025 18:23:47.921794891 CET	53	45162	8.8.8.8	192.168.2.14
Jan 23, 2025 18:23:47.921809912 CET	53	45162	8.8.8.8	192.168.2.14
Jan 23, 2025 18:23:48.379956007 CET	53	45162	8.8.8.8	192.168.2.14
Jan 23, 2025 18:23:48.381108046 CET	45162	53	192.168.2.14	8.8.8.8
Jan 23, 2025 18:23:48.513816118 CET	53	45162	8.8.8.8	192.168.2.14
Jan 23, 2025 18:23:48.514014006 CET	45162	53	192.168.2.14	8.8.8.8
Jan 23, 2025 18:23:50.379957914 CET	53	45162	8.8.8.8	192.168.2.14
Jan 23, 2025 18:23:50.380155087 CET	45162	53	192.168.2.14	8.8.8.8
Jan 23, 2025 18:23:50.384980917 CET	53	45162	8.8.8.8	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Jan 23, 2025 18:23:47.916851997 CET	192.168.2.14	8.8.8.8	0x4b35	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Jan 23, 2025 18:23:47.916852951 CET	192.168.2.14	8.8.8.8	0xe0a6	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
Jan 23, 2025 18:23:48.513816118 CET	8.8.8.8	192.168.2.14	0x4b35	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Jan 23, 2025 18:23:48.513816118 CET	8.8.8.8	192.168.2.14	0x4b35	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: telnet.mips.elf PID: 5584, Parent PID: 5503

General

Start time (UTC):	17:23:45
Start date (UTC):	23/01/2025
Path:	/tmp/telnet.mips.elf
Arguments:	/tmp/telnet.mips.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

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 telnet.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

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

URLs from Memory and Binaries

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

TCP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: telnet.mips.elf PID: 5584, Parent PID: 5503

General

File Activities

File Opened

File Read

Process Activities

Signal Sent

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Listening

Socket Connecting

Chronological Activities

Linux Analysis Report
telnet.mips.elf