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Linux Analysis Report
kwari.sh4.elf

Overview

General Information

Sample name:	kwari.sh4.elf
Analysis ID:	1582544
MD5:	93848c50020908cc792bfd34847e2e9f
SHA1:	6eac1b57cfb58560ea5ded24be6bc20c343b9cf9
SHA256:	3319d4ac5ceef8e63f1b6a88dd9ca526b8e0dba7d0d8332ffd14a7e4ade97386
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

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:	41.0.0 Charoite
Analysis ID:	1582544
Start date and time:	2024-12-30 21:00:03 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 25s
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:	kwari.sh4.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@2/0

Warnings

VT rate limit hit for: kwari.sh4.elf

Runtime Messages

Command:	/tmp/kwari.sh4.elf
PID:	5538
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

kwari.sh4.elf (PID: 5538, Parent: 5459, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/kwari.sh4.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: kwari.sh4.elf

ReversingLabs: Detection: 57%

Source: /tmp/kwari.sh4.elf (PID: 5538)

Socket: 127.0.0.1:18904

Jump to behavior

Source: global traffic

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

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: /tmp/kwari.sh4.elf (PID: 5538)

Queries kernel information via 'uname':

Jump to behavior

Source: kwari.sh4.elf, 5538.1.00007fff10b5d000.00007fff10b7e000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: kwari.sh4.elf, 5538.1.00007fff10b5d000.00007fff10b7e000.rw-.sdmp	Binary or memory string: Rx86_64/usr/bin/qemu-sh4/tmp/kwari.sh4.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/kwari.sh4.elf
Source: kwari.sh4.elf, 5538.1.00005585cd3fd000.00005585cd460000.rw-.sdmp	Binary or memory string: U5!/etc/qemu-binfmt/sh4
Source: kwari.sh4.elf, 5538.1.00005585cd3fd000.00005585cd460000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4
Source: kwari.sh4.elf, 5538.1.00007fff10b5d000.00007fff10b7e000.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	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
kwari.sh4.elf	58%	ReversingLabs	Linux.Trojan.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	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	kwari.arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	kwari.arm6.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	fenty.arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse	162.213.35.25

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 LSB executable, Renesas SH, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.804606465484525
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	kwari.sh4.elf
File size:	51'968 bytes
MD5:	93848c50020908cc792bfd34847e2e9f
SHA1:	6eac1b57cfb58560ea5ded24be6bc20c343b9cf9
SHA256:	3319d4ac5ceef8e63f1b6a88dd9ca526b8e0dba7d0d8332ffd14a7e4ade97386
SHA512:	51205de9c9e17941bdb522d0ca8e45bc38389f83ef63bbabbe840521fa96d9aa1ba86eb9e1719742c7e8f624b50e2c6326fe89e4bc55a258a62da64a4354fd34
SSDEEP:	1536:uaok/dgBORYzVUsvbE08/EFDjiSurCei:uG1ftsvbE08/wDGSur
TLSH:	86337D67D82A4D98C5194278F4688D391B13F408A2973EF65E8EC762501BDBCF60E3F6
File Content Preview:	.ELF.....................@.4...p.......4. ...(...............@...@...........................A...A.t...T...........Q.td............................././"O.n........#.@........#.*@,....o&O.n...l..............................././.../.a"O.!...n...a.b("...q.

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	<unknown>
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x4001a0
Flags:	0x9
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	51568
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	0x400094	0x94	0x30	0x0	0x6	AX	4
.text	PROGBITS	0x4000e0	0xe0	0xbb40	0x0	0x6	AX	32
.fini	PROGBITS	0x40bc20	0xbc20	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x40bc44	0xbc44	0xb74	0x0	0x2	A	4
.ctors	PROGBITS	0x41c7bc	0xc7bc	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x41c7c4	0xc7c4	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x41c7d0	0xc7d0	0x160	0x0	0x3	WA	4
.bss	NOBITS	0x41c930	0xc930	0x3e0	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xc930	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	0x400000	0x400000	0xc7b8	0xc7b8	6.8507	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xc7bc	0x41c7bc	0x41c7bc	0x174	0x554	0.8809	0x6	RW	0x10000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Dec 30, 2024 21:00:55.688801050 CET	34731	53	192.168.2.15	8.8.8.8
Dec 30, 2024 21:00:55.688869953 CET	45584	53	192.168.2.15	8.8.8.8
Dec 30, 2024 21:00:55.695053101 CET	53	45584	8.8.8.8	192.168.2.15
Dec 30, 2024 21:00:55.696054935 CET	53	34731	8.8.8.8	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Dec 30, 2024 21:00:55.688801050 CET	192.168.2.15	8.8.8.8	0xb634	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Dec 30, 2024 21:00:55.688869953 CET	192.168.2.15	8.8.8.8	0xa4b6	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
Dec 30, 2024 21:00:55.696054935 CET	8.8.8.8	192.168.2.15	0xb634	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Dec 30, 2024 21:00:55.696054935 CET	8.8.8.8	192.168.2.15	0xb634	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: kwari.sh4.elf PID: 5538, Parent PID: 5459

General

Start time (UTC):	20:00:53
Start date (UTC):	30/12/2024
Path:	/tmp/kwari.sh4.elf
Arguments:	/tmp/kwari.sh4.elf
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

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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Warning!

Linux Analysis Report kwari.sh4.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

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

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

Network Port Distribution

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: kwari.sh4.elf PID: 5538, Parent PID: 5459

General

Chronological Activities

Linux Analysis Report
kwari.sh4.elf