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Linux Analysis Report
sh4.elf

Overview

General Information

Sample name:	sh4.elf
Analysis ID:	1616928
MD5:	9cc23e06a91999d097f8d5fa12cb7c16
SHA1:	7eea606962da8d2c5c2c0f6de6d58adb177cfe8f
SHA256:	4117f651310c95849278e7ebf95625261e127a5d25ba35ccb241496b01c055eb
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	52
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Sample reads /proc/mounts (often used for finding a writable filesystem)

Enumerates processes within the "proc" file system

Sample has stripped symbol table

Sample listens on a socket

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:	1616928
Start date and time:	2025-02-17 11:03:21 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 30s
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:	sh4.elf
Detection:	MAL
Classification:	mal52.troj.linELF@0/1@2/0

Runtime Messages

Command:	/tmp/sh4.elf
PID:	5486
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

sh4.elf (PID: 5486, Parent: 5411, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/sh4.elf

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: sh4.elf

ReversingLabs: Detection: 13%

Source: /tmp/sh4.elf (PID: 5486)

Socket: 127.0.0.1:43478

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	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: global traffic

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

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: mal52.troj.linELF@0/1@2/0

Persistence and Installation Behavior

Sample reads /proc/mounts (often used for finding a writable filesystem)

Source: /tmp/sh4.elf (PID: 5486)

File: /proc/5486/mounts

Jump to behavior

Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3244/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3244/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3244/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3120/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3120/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3120/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3361/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3361/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3361/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3239/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3239/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3239/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1577/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1577/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1577/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1610/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1610/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1610/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1299/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1299/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1299/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3235/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3235/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3235/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2946/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2946/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2946/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/917/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/917/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/917/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3134/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3134/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3134/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1593/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1593/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1593/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3011/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3011/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3011/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3094/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3094/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3094/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2955/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2955/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2955/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3406/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3406/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3406/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1589/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1589/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1589/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3129/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3129/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3129/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1588/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1588/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/1588/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3402/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3402/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3402/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3125/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3125/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3125/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3246/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3246/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3246/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3245/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3245/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3245/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/767/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/767/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/767/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/800/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/800/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/800/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/888/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/888/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/888/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/801/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/801/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/801/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/769/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/769/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/769/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/803/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/803/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/803/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/806/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/806/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/806/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/807/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/807/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/807/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/928/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/928/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/928/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2956/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2956/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/2956/cmdline	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3420/maps	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3420/status	Jump to behavior
Source: /tmp/sh4.elf (PID: 5486)	File opened: /proc/3420/cmdline	Jump to behavior

Source: /tmp/sh4.elf (PID: 5486)

Queries kernel information via 'uname':

Jump to behavior

Source: sh4.elf, 5486.1.00007ffdb25db000.00007ffdb25fc000.rw-.sdmp	Binary or memory string: =x86_64/usr/bin/qemu-sh4/tmp/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/sh4.elf
Source: sh4.elf, 5486.1.00007ffdb25db000.00007ffdb25fc000.rw-.sdmp	Binary or memory string: 9rU/tmp/qemu-open.wEwSs1
Source: sh4.elf, 5486.1.00007ffdb25db000.00007ffdb25fc000.rw-.sdmp	Binary or memory string: /qemu-open.XXXXX
Source: sh4.elf, 5486.1.00007ffdb25db000.00007ffdb25fc000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: sh4.elf, 5486.1.000055723ca7d000.000055723cb00000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4
Source: sh4.elf, 5486.1.00007ffdb25db000.00007ffdb25fc000.rw-.sdmp	Binary or memory string: /tmp/qemu-open.wEwSs1
Source: sh4.elf, 5486.1.00007ffdb25db000.00007ffdb25fc000.rw-.sdmp	Binary or memory string: /proc/n/qemu-open.XXXXX
Source: sh4.elf, 5486.1.000055723ca7d000.000055723cb00000.rw-.sdmp	Binary or memory string: <rU5!/etc/qemu-binfmt/sh4
Source: sh4.elf, 5486.1.00007ffdb25db000.00007ffdb25fc000.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	1 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 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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
sh4.elf	14%	ReversingLabs	Linux.Backdoor.Gafgyt

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

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. 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	na.elf	Get hash	malicious	Prometei	Browse
	a-r.m-4.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	m-6.8-k.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	main_x86.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	linux_mipsel_softfloat.elf	Get hash	malicious	Chaos	Browse
	linux_ppc64.elf	Get hash	malicious	Chaos	Browse
	EdiAf.arm7.elf	Get hash	malicious	Unknown	Browse
	Demon.mpsl.elf	Get hash	malicious	Mirai	Browse
	Demon.x86_64.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	na.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	arm.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	armv5l.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	arm5.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	i686.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	i-5.8-6.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25
	a-r.m-6.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	a-r.m-4.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	m68k.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	185.125.190.26
	mpsl.elf	Get hash	malicious	Unknown	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
	.i.elf	Get hash	malicious	Unknown	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
	armv7l.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	x-3.2-.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/tmp/qemu-open.wEwSs1 (deleted)

Download File

Process:	/tmp/sh4.elf
File Type:	ASCII text, with no line terminators
Category:	dropped
Size (bytes):	13
Entropy (8bit):	3.5465935642949384
Encrypted:	false
SSDEEP:	3:TgKYn:TgKYn
MD5:	AEF4020327A62D78F5A8202D453B0A74
SHA1:	84FC7A7CBE0B4EF5BDB927B95EA1BD01665BE8B1
SHA-256:	1878DDF74B755A998CBFD2140779771966ADF507D2B95CA86906476BFD80575B
SHA-512:	0E1BF58363F746F19B92730E15E2091F05A2C87B120B004F3819735F4D60268E66711EBEB06E3B771B2DE327FCBB3DDD368241E7A6E1A1B759384F6D70A2C528
Malicious:	false
Reputation:	moderate, very likely benign file
Preview:	/tmp/sh4.elf.

Static File Info

General

File type:	ELF 32-bit LSB executable, Renesas SH, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.895743987953786
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	sh4.elf
File size:	66'988 bytes
MD5:	9cc23e06a91999d097f8d5fa12cb7c16
SHA1:	7eea606962da8d2c5c2c0f6de6d58adb177cfe8f
SHA256:	4117f651310c95849278e7ebf95625261e127a5d25ba35ccb241496b01c055eb
SHA512:	cff4b98849b68fbc202e63e2550be6cd754443afdb6aaca17a48f7bce8de19b10fff524c72b10fd7f03c8e5f9355dc7c1dda1b89fdff101401bb17d65f4a3bdb
SSDEEP:	1536:Ab+ovX0MPuy9aXKKkRJKtt1+7cHaEBA2CDncjb:6rrsXKrwt+3yA2tjb
TLSH:	99636A27CC6A2F58D548D9B1B4348FB91763A861C44B5FEA8567C23A9083E8DF5823F4
File Content Preview:	.ELF.....................@.4...........4. ...(...............@...@...........................A...A......f..........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:	66588
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	0xdee0	0x0	0x6	AX	32
.fini	PROGBITS	0x40dfc0	0xdfc0	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x40dfe4	0xdfe4	0x1de4	0x0	0x2	A	4
.ctors	PROGBITS	0x410000	0x10000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x410008	0x10008	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x410014	0x10014	0x3c8	0x0	0x3	WA	4
.bss	NOBITS	0x4103dc	0x103dc	0x62c0	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x103dc	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	0xfdc8	0xfdc8	6.9770	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x10000	0x410000	0x410000	0x3dc	0x669c	3.0210	0x6	RW	0x10000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 4
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Feb 17, 2025 11:04:17.177622080 CET	46540	443	192.168.2.14	185.125.190.26
Feb 17, 2025 11:04:48.152359009 CET	46540	443	192.168.2.14	185.125.190.26

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Feb 17, 2025 11:04:09.339449883 CET	43070	53	192.168.2.14	1.1.1.1
Feb 17, 2025 11:04:09.339449883 CET	41873	53	192.168.2.14	1.1.1.1
Feb 17, 2025 11:04:09.347073078 CET	53	41873	1.1.1.1	192.168.2.14
Feb 17, 2025 11:04:09.347090960 CET	53	43070	1.1.1.1	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Feb 17, 2025 11:04:09.339449883 CET	192.168.2.14	1.1.1.1	0x93d7	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false
Feb 17, 2025 11:04:09.339449883 CET	192.168.2.14	1.1.1.1	0x8fba	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Feb 17, 2025 11:04:09.347073078 CET	1.1.1.1	192.168.2.14	0x8fba	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Feb 17, 2025 11:04:09.347073078 CET	1.1.1.1	192.168.2.14	0x8fba	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: sh4.elf PID: 5486, Parent PID: 5411

General

Start time (UTC):	10:04:06
Start date (UTC):	17/02/2025
Path:	/tmp/sh4.elf
Arguments:	/tmp/sh4.elf
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Description:	Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password, from the operating system and software. Credentials can then be used to perform Lateral Movement and access restricted information.
Tactics:	Credential Access
Data Sources:	Active Directory: Active Directory Object Access, Command: Command Execution, File: File Access, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow, Process: OS API Execution, Process: Process Access, Process: Process Creation, Windows Registry: Windows Registry Key Access
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 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 sh4.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

/tmp/qemu-open.wEwSs1 (deleted)

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: sh4.elf PID: 5486, Parent PID: 5411

General

File Activities

File Opened

File Deleted

File Read

File Written

File Moved

Directory Enumerated

Process Activities

Signal Sent

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Listening

Socket Connecting

Chronological Activities

Linux Analysis Report
sh4.elf