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Linux Analysis Report
res.arm6.elf

Overview

General Information

Sample name:	res.arm6.elf
Analysis ID:	1589446
MD5:	113e242967be30df05d92487297fdf53
SHA1:	2cd1b0962ab2dc316f48452724b1731d5c2e6a99
SHA256:	a37d4acd105431083e2f065ed367266dfc190a08833efd30656168a61f4e091d
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

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:	1589446
Start date and time:	2025-01-12 15:34:06 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 43s
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:	res.arm6.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/res.arm6.elf
PID:	6255
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: 6228, Parent: 4331)

rm (PID: 6228, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.MtZHOPGw9t /tmp/tmp.AXAeOvveQu /tmp/tmp.Sn9YOtQHaB

dash New Fork (PID: 6229, Parent: 4331)

rm (PID: 6229, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.MtZHOPGw9t /tmp/tmp.AXAeOvveQu /tmp/tmp.Sn9YOtQHaB

res.arm6.elf (PID: 6255, Parent: 6155, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/res.arm6.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: res.arm6.elf	Virustotal: Detection: 47%			Perma Link
Source: res.arm6.elf	ReversingLabs: Detection: 57%

Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 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: 6228)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.MtZHOPGw9t /tmp/tmp.AXAeOvveQu /tmp/tmp.Sn9YOtQHaB			Jump to behavior
Source: /usr/bin/dash (PID: 6229)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.MtZHOPGw9t /tmp/tmp.AXAeOvveQu /tmp/tmp.Sn9YOtQHaB			Jump to behavior

Source: /tmp/res.arm6.elf (PID: 6255)

Queries kernel information via 'uname':

Jump to behavior

Source: res.arm6.elf, 6255.1.00007ffecd54e000.00007ffecd56f000.rw-.sdmp	Binary or memory string: <x86_64/usr/bin/qemu-arm/tmp/res.arm6.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/res.arm6.elf
Source: res.arm6.elf, 6255.1.0000555f059d1000.0000555f05aff000.rw-.sdmp	Binary or memory string: _U!/etc/qemu-binfmt/arm
Source: res.arm6.elf, 6255.1.0000555f059d1000.0000555f05aff000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: res.arm6.elf, 6255.1.00007ffecd54e000.00007ffecd56f000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: res.arm6.elf, 6255.1.00007ffecd54e000.00007ffecd56f000.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 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
res.arm6.elf	48%	Virustotal		Browse
res.arm6.elf	58%	ReversingLabs	Linux.Trojan.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	ASN	ASN Name	Malicious
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	xmrig.elf	Get hash	malicious	Unknown	Browse
	yakuza.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	yakuza.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	camp.i686.elf	Get hash	malicious	Mirai	Browse
	camp.ppc.elf	Get hash	malicious	Mirai	Browse
	camp.arm.elf	Get hash	malicious	Mirai	Browse
	arm5.elf	Get hash	malicious	Unknown	Browse
	12.elf	Get hash	malicious	Unknown	Browse
	x86.elf	Get hash	malicious	Unknown	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	xmrig.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	yakuza.x32.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	yakuza.ppc.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	yakuza.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	yakuza.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	camp.i686.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	camp.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	xmrig.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	yakuza.x32.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	yakuza.ppc.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	yakuza.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	yakuza.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	camp.i686.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	camp.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
INIT7CH	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	xmrig.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	yakuza.x32.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	yakuza.ppc.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	yakuza.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	yakuza.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	camp.i686.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	camp.ppc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	camp.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	arm5.elf	Get hash	malicious	Unknown	Browse	109.202.202.202

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, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.935802252178637
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	res.arm6.elf
File size:	50'840 bytes
MD5:	113e242967be30df05d92487297fdf53
SHA1:	2cd1b0962ab2dc316f48452724b1731d5c2e6a99
SHA256:	a37d4acd105431083e2f065ed367266dfc190a08833efd30656168a61f4e091d
SHA512:	9346d5b94f0f662ab8df71b06584c256488e6b58c5dc8a38e31d53538ffca944f9866277d946b39b5a6b0c9fe3cf950de8329a6957e9e675b9d5b7e62bcb49e3
SSDEEP:	1536:YunrEmfLYkGeef1le57vQfxUcLIQiQTT2YG5m:JvyPe57vcX2YG5m
TLSH:	7933F886B9819E15C5D412BEFE0E128E33136768E3DF7213DE146B2137CB56B0A7B815
File Content Preview:	.ELF..............(.....T...4...........4. ...(.....................l...l...............p...p...l.......t...........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.D.......l.....-.@0....S

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8154
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	50360
Section Header Size:	40
Number of Section Headers:	12
Header String Table Index:	11

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x10	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0xba3c	0x0	0x6	AX	16
.fini	PROGBITS	0x13aec	0xbaec	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x13afc	0xbafc	0x670	0x0	0x2	A	4
.init_array	INIT_ARRAY	0x1c170	0xc174	0x4	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x1c174	0xc178	0x4	0x0	0x3	WA	4
.got	PROGBITS	0x1c17c	0xc180	0x74	0x4	0x3	WA	4
.data	PROGBITS	0x1c1f0	0xc1f4	0x254	0x0	0x3	WA	4
.bss	NOBITS	0x1c444	0xc448	0x25a0	0x0	0x3	WA	4
.ARM.attributes	ARM_ATTRIBUTES	0x0	0xc448	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0xc458	0x5d	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0xc16c	0xc16c	5.9634	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0xc170	0x1c170	0x1c16c	0x2d8	0xa874	3.5668	0x6	RW	0x8000	.init_array .fini_array .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 12, 2025 15:34:58.855329990 CET	42836	443	192.168.2.23	91.189.91.43
Jan 12, 2025 15:34:59.879280090 CET	42516	80	192.168.2.23	109.202.202.202
Jan 12, 2025 15:35:14.213278055 CET	43928	443	192.168.2.23	91.189.91.42
Jan 12, 2025 15:35:24.451905966 CET	42836	443	192.168.2.23	91.189.91.43
Jan 12, 2025 15:35:30.595113039 CET	42516	80	192.168.2.23	109.202.202.202
Jan 12, 2025 15:35:55.167671919 CET	43928	443	192.168.2.23	91.189.91.42
Jan 12, 2025 15:36:15.644774914 CET	42836	443	192.168.2.23	91.189.91.43

System Behavior

Analysis Process: dash PID: 6228, Parent PID: 4331

General

Start time (UTC):	14:34:49
Start date (UTC):	12/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6228, Parent PID: 4331

General

Start time (UTC):	14:34:49
Start date (UTC):	12/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.MtZHOPGw9t /tmp/tmp.AXAeOvveQu /tmp/tmp.Sn9YOtQHaB
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 6229, Parent PID: 4331

General

Start time (UTC):	14:34:49
Start date (UTC):	12/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6229, Parent PID: 4331

General

Start time (UTC):	14:34:49
Start date (UTC):	12/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.MtZHOPGw9t /tmp/tmp.AXAeOvveQu /tmp/tmp.Sn9YOtQHaB
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: res.arm6.elf PID: 6255, Parent PID: 6155

General

Start time (UTC):	14:34:55
Start date (UTC):	12/01/2025
Path:	/tmp/res.arm6.elf
Arguments:	/tmp/res.arm6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report res.arm6.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

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: 6228, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6228, Parent PID: 4331

General

Chronological Activities

Analysis Process: dash PID: 6229, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6229, Parent PID: 4331

General

Chronological Activities

Analysis Process: res.arm6.elf PID: 6255, Parent PID: 6155

General

Chronological Activities

Linux Analysis Report
res.arm6.elf