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Linux Analysis Report
dlr.m68k.elf

Overview

General Information

Sample name:	dlr.m68k.elf
Analysis ID:	1592434
MD5:	3a9d141c490fd974839655300eb72b99
SHA1:	8bfc9e0178e2ad7b9d7942861978453f1af6021d
SHA256:	49d9c7b9416292a3fc86885237041b1cf045b35583288a55021df3c4c4eee2db
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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

Reads the 'hosts' file potentially containing internal network hosts

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:	1592434
Start date and time:	2025-01-16 06:12:07 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 27s
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:	dlr.m68k.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/dlr.m68k.elf
PID:	5483
Exit Code:	1
Exit Code Info:
Killed:	False
Standard Output:	byte Failed to resolve domain
Standard Error:

Process Tree

system is lnxubuntu20

dash New Fork (PID: 5470, Parent: 3633)

rm (PID: 5470, Parent: 3633, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.lpWuseaD6d /tmp/tmp.jEFUybPzfC /tmp/tmp.ClioETQ0CZ

dash New Fork (PID: 5471, Parent: 3633)

rm (PID: 5471, Parent: 3633, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.lpWuseaD6d /tmp/tmp.jEFUybPzfC /tmp/tmp.ClioETQ0CZ

dlr.m68k.elf (PID: 5483, Parent: 5403, MD5: cd177594338c77b895ae27c33f8f86cc) Arguments: /tmp/dlr.m68k.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: dlr.m68k.elf

ReversingLabs: Detection: 13%

Source: /tmp/dlr.m68k.elf (PID: 5483)

Reads hosts file: /etc/hosts

Jump to behavior

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

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@0/0

Source: /usr/bin/dash (PID: 5470)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.lpWuseaD6d /tmp/tmp.jEFUybPzfC /tmp/tmp.ClioETQ0CZ			Jump to behavior
Source: /usr/bin/dash (PID: 5471)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.lpWuseaD6d /tmp/tmp.jEFUybPzfC /tmp/tmp.ClioETQ0CZ			Jump to behavior

Source: /tmp/dlr.m68k.elf (PID: 5483)

Queries kernel information via 'uname':

Jump to behavior

Source: dlr.m68k.elf, 5483.1.00007ffd7daaa000.00007ffd7dacb000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-m68k/tmp/dlr.m68k.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/dlr.m68k.elf
Source: dlr.m68k.elf, 5483.1.00007ffd7daaa000.00007ffd7dacb000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-m68k
Source: dlr.m68k.elf, 5483.1.000056134e631000.000056134e695000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/m68k
Source: dlr.m68k.elf, 5483.1.000056134e631000.000056134e695000.rw-.sdmp	Binary or memory string: V!/etc/qemu-binfmt/m68k

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	1 File and Directory 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	Link
dlr.m68k.elf	13%	ReversingLabs	Linux.Backdoor.Mirai

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	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	byte.x86.elf	Get hash	malicious	Mirai, Okiru	Browse
	boatnet.spc.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	res.arc.elf	Get hash	malicious	Unknown	Browse
	disbot.elf	Get hash	malicious	Unknown	Browse
	ub8ehJSePAfc9FYqZIT6.arm7.elf	Get hash	malicious	Unknown	Browse
	boooooos.arm7.elf	Get hash	malicious	Unknown	Browse
	Aqua.arm6.elf	Get hash	malicious	Unknown	Browse
	Mozi.m.elf	Get hash	malicious	Mirai	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse
	arm6.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	byte.x86.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	dlr.arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	dlr.x86.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	byte.m68k.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	dlr.sh4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	byte.mips.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	sshd.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	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, Motorola m68k, 68020, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.897761509863591
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	dlr.m68k.elf
File size:	46'464 bytes
MD5:	3a9d141c490fd974839655300eb72b99
SHA1:	8bfc9e0178e2ad7b9d7942861978453f1af6021d
SHA256:	49d9c7b9416292a3fc86885237041b1cf045b35583288a55021df3c4c4eee2db
SHA512:	ed734d8a6baeb36db04107adf329806ee4bedc8b63b8546d68d6e3714f8615715aa99784f0516b8a5b02954f3c35eb2aa40eb2dba5bfe1ee387b8b35e687b350
SSDEEP:	768:0LOek8tIKFeH4on7Ti4ykFzOB8h/G7Xaw3vyI7gBP/GZ9IYn:0LOT8tInHB7TXykFJWdvyI7gBPOLnn
TLSH:	4223F8DBF800E5BAF80DD73B489748097270F3A2059216763767316AEC7B2A91537F86
File Content Preview:	.ELF.......................d...4.........4. ...(.................................. .......................%0...... .dt.Q............................NV../...Hx..a.....P.N^NuNV../...Hx..a.....N^NuNV../.../.../...Hx..a.....N^NuNV..-n....-n....-n....Hn..Hx..H

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	MC68000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x80000364
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	46224
Section Header Size:	40
Number of Section Headers:	6
Header String Table Index:	5

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.text	PROGBITS	0x80000094	0x94	0x9d46	0x0	0x6	AX	4
.rodata	PROGBITS	0x80009dda	0x9dda	0x13ec	0x0	0x2	A	2
.data	PROGBITS	0x8000d1c8	0xb1c8	0x2a4	0x0	0x3	WA	4
.bss	NOBITS	0x8000d46c	0xb46c	0x228c	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xb46c	0x24	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x80000000	0x80000000	0xb1c6	0xb1c6	5.9423	0x5	R E	0x2000	.text .rodata
LOAD	0xb1c8	0x8000d1c8	0x8000d1c8	0x2a4	0x2530	1.1511	0x6	RW	0x2000	.data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 16, 2025 06:13:00.837680101 CET	46540	443	192.168.2.14	185.125.190.26
Jan 16, 2025 06:13:32.325062990 CET	46540	443	192.168.2.14	185.125.190.26

System Behavior

Analysis Process: dash PID: 5470, Parent PID: 3633

General

Start time (UTC):	05:12:39
Start date (UTC):	16/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5470, Parent PID: 3633

General

Start time (UTC):	05:12:39
Start date (UTC):	16/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.lpWuseaD6d /tmp/tmp.jEFUybPzfC /tmp/tmp.ClioETQ0CZ
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 5471, Parent PID: 3633

General

Start time (UTC):	05:12:39
Start date (UTC):	16/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5471, Parent PID: 3633

General

Start time (UTC):	05:12:39
Start date (UTC):	16/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.lpWuseaD6d /tmp/tmp.jEFUybPzfC /tmp/tmp.ClioETQ0CZ
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dlr.m68k.elf PID: 5483, Parent PID: 5403

General

Start time (UTC):	05:12:48
Start date (UTC):	16/01/2025
Path:	/tmp/dlr.m68k.elf
Arguments:	/tmp/dlr.m68k.elf
File size:	4463432 bytes
MD5 hash:	cd177594338c77b895ae27c33f8f86cc

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 enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system. Adversaries may use the information from File and Directory 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, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Network, 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

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Linux Analysis Report dlr.m68k.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

System Behavior

Analysis Process: dash PID: 5470, Parent PID: 3633

General

Chronological Activities

Analysis Process: rm PID: 5470, Parent PID: 3633

General

Chronological Activities

Analysis Process: dash PID: 5471, Parent PID: 3633

General

Chronological Activities

Analysis Process: rm PID: 5471, Parent PID: 3633

General

Chronological Activities

Analysis Process: dlr.m68k.elf PID: 5483, Parent PID: 5403

General

Chronological Activities

Linux Analysis Report
dlr.m68k.elf