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Linux Analysis Report
kyom68k.elf

Overview

General Information

Sample name:	kyom68k.elf
Analysis ID:	1665380
MD5:	15265091a581568283bffc9f79923e44
SHA1:	a19fafe979e7b48c9306cba5a396a18002e2ed2e
SHA256:	63b181bdb8cef819f74f9b732db2af12418ee5fc202ca196b947f94325e86265
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	52
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Sample deletes itself

Found strings indicative of a multi-platform dropper

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:	1665380
Start date and time:	2025-04-15 14:27:37 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 55s
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:	kyom68k.elf
Detection:	MAL
Classification:	mal52.evad.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/kyom68k.elf
PID:	6266
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

kyom68k.elf (PID: 6266, Parent: 6186, MD5: cd177594338c77b895ae27c33f8f86cc) Arguments: /tmp/kyom68k.elf

kyom68k.elf New Fork (PID: 6268, Parent: 6266)

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: kyom68k.elf	Virustotal: Detection: 11%			Perma Link
Source: kyom68k.elf	ReversingLabs: Detection: 13%

Source: kyom68k.elf

String: /dev/watchdog/dev/misc/watchdog/proc/self/exe/status nothinglmao/bin/bashtelnetdvsftpdrebootwgetcurltftp

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

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

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: mal52.evad.linELF@0/0@0/0

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/kyom68k.elf (PID: 6266)

File: /tmp/kyom68k.elf

Jump to behavior

Source: /tmp/kyom68k.elf (PID: 6266)

Queries kernel information via 'uname':

Jump to behavior

Source: kyom68k.elf, 6266.1.000055a396167000.000055a3961cb000.rw-.sdmp, kyom68k.elf, 6268.1.000055a396167000.000055a3961cb000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/m68k
Source: kyom68k.elf, 6266.1.00007fff36a37000.00007fff36a58000.rw-.sdmp, kyom68k.elf, 6268.1.00007fff36a37000.00007fff36a58000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-m68k
Source: kyom68k.elf, 6266.1.00007fff36a37000.00007fff36a58000.rw-.sdmp, kyom68k.elf, 6268.1.00007fff36a37000.00007fff36a58000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-m68k/tmp/kyom68k.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/kyom68k.elf
Source: kyom68k.elf, 6266.1.000055a396167000.000055a3961cb000.rw-.sdmp, kyom68k.elf, 6268.1.000055a396167000.000055a3961cb000.rw-.sdmp	Binary or memory string: /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	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	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
kyom68k.elf	11%	Virustotal		Browse
kyom68k.elf	14%	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	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	Space.mpsl.elf	Get hash	malicious	Unknown	Browse
	kyosh4.elf	Get hash	malicious	Unknown	Browse
	Space.arm7.elf	Get hash	malicious	Mirai	Browse
	Space.x86.elf	Get hash	malicious	Unknown	Browse
	a-r.m-6.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
91.189.91.42	Space.mpsl.elf	Get hash	malicious	Unknown	Browse
	kyosh4.elf	Get hash	malicious	Unknown	Browse
	Space.arm7.elf	Get hash	malicious	Mirai	Browse
	Space.x86.elf	Get hash	malicious	Unknown	Browse
	a-r.m-6.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	Space.mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	kyosh4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	Space.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	Space.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	a-r.m-6.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	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
	na.elf	Get hash	malicious	Prometei	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
CANONICAL-ASGB	Space.mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	kyosh4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	Space.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	Space.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	a-r.m-6.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	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
	na.elf	Get hash	malicious	Prometei	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
INIT7CH	Space.mpsl.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	kyosh4.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	Space.arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	Space.x86.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	a-r.m-6.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	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 MSB executable, Motorola m68k, 68020, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.074090702455109
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	kyom68k.elf
File size:	32'836 bytes
MD5:	15265091a581568283bffc9f79923e44
SHA1:	a19fafe979e7b48c9306cba5a396a18002e2ed2e
SHA256:	63b181bdb8cef819f74f9b732db2af12418ee5fc202ca196b947f94325e86265
SHA512:	8abd30beb7afdb5fa2a5e73bc2495f2530063d716f7a9624a27f5c8a890820a2782e6029b45fecc2caad4289508b1e54dd7a05f4956e5b35fbe6fe43357423ce
SSDEEP:	768:wTuF/fwBrgeCQxT8/dWJ18pEX8hBq6BTbMz/XB:wTOffh2T8/dWcpEX8jq65s/B
TLSH:	99E209DAF510DEBEF80EF37B8413061DB031B66952830B3667A73C979D721980876E4A
File Content Preview:	.ELF.......................D...4..~......4. ...(......................\|H..\|H...... .......\|L...L...L...(..H....... .dt.Q............................NV..a....da...w.N^NuNV..J9...tf>"y...d QJ.g.X.#....dN."y...d QJ.f.A.....J.g.Hy..\|HN.X........tN^NuNV..N^NuN

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:	0x80000144
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	32436
Section Header Size:	40
Number of Section Headers:	10
Header String Table Index:	9

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x80000094	0x94	0x14	0x0	0x6	AX	2
.text	PROGBITS	0x800000a8	0xa8	0x772e	0x0	0x6	AX	4
.fini	PROGBITS	0x800077d6	0x77d6	0xe	0x0	0x6	AX	2
.rodata	PROGBITS	0x800077e4	0x77e4	0x464	0x0	0x2	A	2
.ctors	PROGBITS	0x80009c4c	0x7c4c	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x80009c54	0x7c54	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x80009c60	0x7c60	0x214	0x0	0x3	WA	4
.bss	NOBITS	0x80009e74	0x7e74	0x245e4	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x7e74	0x3e	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	0x7c48	0x7c48	6.1221	0x5	R E	0x2000	.init .text .fini .rodata
LOAD	0x7c4c	0x80009c4c	0x80009c4c	0x228	0x2480c	2.9884	0x6	RW	0x2000	.ctors .dtors .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
Apr 15, 2025 14:28:39.068882942 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 15, 2025 14:28:39.324913025 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 15, 2025 14:28:44.700449944 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 15, 2025 14:28:59.034456968 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 15, 2025 14:29:09.272746086 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 15, 2025 14:29:11.320488930 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 15, 2025 14:29:39.988600969 CEST	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: kyom68k.elf PID: 6266, Parent PID: 6186

General

Start time (UTC):	12:28:37
Start date (UTC):	15/04/2025
Path:	/tmp/kyom68k.elf
Arguments:	/tmp/kyom68k.elf
File size:	4463432 bytes
MD5 hash:	cd177594338c77b895ae27c33f8f86cc

Chronological Activities

Analysis Process: kyom68k.elf PID: 6268, Parent PID: 6266

General

Start time (UTC):	12:28:37
Start date (UTC):	15/04/2025
Path:	/tmp/kyom68k.elf
Arguments:	-
File size:	4463432 bytes
MD5 hash:	cd177594338c77b895ae27c33f8f86cc

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 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

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Warning!

Linux Analysis Report kyom68k.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

Hooking and other Techniques for Hiding and Protection

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: kyom68k.elf PID: 6266, Parent PID: 6186

General

Chronological Activities

Analysis Process: kyom68k.elf PID: 6268, Parent PID: 6266

General

Linux Analysis Report
kyom68k.elf