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Linux Analysis Report
zersh4.elf

Overview

General Information

Sample name:	zersh4.elf
Analysis ID:	1543627
MD5:	7d374ef628ba95107c2e86824df9d28e
SHA1:	28aba9664025ef7f633d7404fe93bed9d5ba3f40
SHA256:	0dcf0f404c2f66c472a233c768a4cda0da642bc407c6664d3a4e73169a0f7f39
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Connects to many ports of the same IP (likely port scanning)

Sends malformed DNS queries

Detected TCP or UDP traffic on non-standard ports

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

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:	1543627
Start date and time:	2024-10-28 08:14:16 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 32s
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:	zersh4.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/0@5/0

Warnings

VT rate limit hit for: zersh4.elf

Runtime Messages

Command:	/tmp/zersh4.elf
PID:	5521
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	The Peoples Bank of China.
Standard Error:

Process Tree

system is lnxubuntu20

zersh4.elf (PID: 5521, Parent: 5440, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/zersh4.elf

zersh4.elf New Fork (PID: 5523, Parent: 5521)

zersh4.elf New Fork (PID: 5525, Parent: 5523)

dash New Fork (PID: 5557, Parent: 3670)

rm (PID: 5557, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.4AzBZnn3fe /tmp/tmp.7GIChT4WWs /tmp/tmp.SC87CJbjay

dash New Fork (PID: 5558, Parent: 3670)

cat (PID: 5558, Parent: 3670, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.4AzBZnn3fe

dash New Fork (PID: 5559, Parent: 3670)

head (PID: 5559, Parent: 3670, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5560, Parent: 3670)

tr (PID: 5560, Parent: 3670, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5561, Parent: 3670)

cut (PID: 5561, Parent: 3670, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5562, Parent: 3670)

cat (PID: 5562, Parent: 3670, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.4AzBZnn3fe

dash New Fork (PID: 5563, Parent: 3670)

head (PID: 5563, Parent: 3670, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5564, Parent: 3670)

tr (PID: 5564, Parent: 3670, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5565, Parent: 3670)

cut (PID: 5565, Parent: 3670, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5566, Parent: 3670)

rm (PID: 5566, Parent: 3670, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.4AzBZnn3fe /tmp/tmp.7GIChT4WWs /tmp/tmp.SC87CJbjay

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: zersh4.elf

ReversingLabs: Detection: 28%

Source: unknown

HTTPS traffic detected: 34.254.182.186:443 -> 192.168.2.15:44524 version: TLS 1.2

Networking

Connects to many ports of the same IP (likely port scanning)

Source: global traffic	TCP traffic: 45.156.86.26 ports 38241,1,2,3,4,8
Source: global traffic	TCP traffic: 45.156.86.24 ports 38241,1,2,3,4,8

Sends malformed DNS queries

Source: global traffic

DNS traffic detected: malformed DNS query: netfags.geek. [malformed]

Source: global traffic	TCP traffic: 192.168.2.15:55532 -> 45.156.86.24:38241
Source: global traffic	TCP traffic: 192.168.2.15:39720 -> 45.156.86.26:38241

Source: /tmp/zersh4.elf (PID: 5521)

Socket: 127.0.0.1:39148

Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	TCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknown	UDP traffic detected without corresponding DNS query: 185.181.61.24
Source: unknown	UDP traffic detected without corresponding DNS query: 81.169.136.222
Source: unknown	UDP traffic detected without corresponding DNS query: 185.181.61.24
Source: unknown	UDP traffic detected without corresponding DNS query: 194.36.144.87
Source: unknown	UDP traffic detected without corresponding DNS query: 81.169.136.222

Source: global traffic	DNS traffic detected: DNS query: burnthe.libre
Source: global traffic	DNS traffic detected: DNS query: yellowchink.pirate
Source: global traffic	DNS traffic detected: DNS query: netfags.geek. [malformed]

Source: unknown	Network traffic detected: HTTP traffic on port 44524 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 44524

Source: unknown

HTTPS traffic detected: 34.254.182.186:443 -> 192.168.2.15:44524 version: TLS 1.2

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal56.troj.linELF@0/0@5/0

Source: /usr/bin/dash (PID: 5557)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.4AzBZnn3fe /tmp/tmp.7GIChT4WWs /tmp/tmp.SC87CJbjay			Jump to behavior
Source: /usr/bin/dash (PID: 5566)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.4AzBZnn3fe /tmp/tmp.7GIChT4WWs /tmp/tmp.SC87CJbjay			Jump to behavior

Source: /tmp/zersh4.elf (PID: 5521)

Queries kernel information via 'uname':

Jump to behavior

Source: zersh4.elf, 5521.1.00007fff41d48000.00007fff41d69000.rw-.sdmp	Binary or memory string: `ex86_64/usr/bin/qemu-sh4/tmp/zersh4.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/zersh4.elf
Source: zersh4.elf, 5521.1.00007fff41d48000.00007fff41d69000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: zersh4.elf, 5521.1.0000557d12605000.0000557d12668000.rw-.sdmp	Binary or memory string: }U5!/etc/qemu-binfmt/sh4
Source: zersh4.elf, 5521.1.0000557d12605000.0000557d12668000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4

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 Non-Standard Port	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	1 Non-Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	Binary Padding	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	2 Application Layer Protocol	Traffic Duplication	Data Destruction

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

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
zersh4.elf	29%	ReversingLabs	Linux.Backdoor.Gafgyt

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

Name	IP	Active	Malicious	Reputation
yellowchink.pirate	45.156.86.24	true	true	unknown
burnthe.libre	45.156.86.26	true	true	unknown
netfags.geek. [malformed]	unknown	unknown	true	unknown

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
34.254.182.186	unknown	United States	16509	AMAZON-02US	false
45.156.86.26	burnthe.libre	Germany	44592	SKYLINKNL	true
45.156.86.24	yellowchink.pirate	Germany	44592	SKYLINKNL	true

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
34.254.182.186	bot.arm.elf	Get hash	malicious	Mirai, Okiru	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	m68k.elf	Get hash	malicious	Mirai, Okiru	Browse
	arm7.elf	Get hash	malicious	Unknown	Browse
	earm5.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.ELF.Mirai-ALC.24541.15805.elf	Get hash	malicious	Unknown	Browse
	x86.elf	Get hash	malicious	Unknown	Browse
	c05jitIdPl.elf	Get hash	malicious	Mirai	Browse
45.156.86.26	zermips.elf	Get hash	malicious	Unknown	Browse
	zermpsl.elf	Get hash	malicious	Unknown	Browse
	zerarm7.elf	Get hash	malicious	Unknown	Browse
	nabarm7.elf	Get hash	malicious	Unknown	Browse
	nabppc.elf	Get hash	malicious	Unknown	Browse
	nabspc.elf	Get hash	malicious	Unknown	Browse
45.156.86.24	zermips.elf	Get hash	malicious	Unknown	Browse
	zermpsl.elf	Get hash	malicious	Unknown	Browse
	zerarm7.elf	Get hash	malicious	Unknown	Browse
	zerppc.elf	Get hash	malicious	Unknown	Browse
	nabarm7.elf	Get hash	malicious	Unknown	Browse
	nabppc.elf	Get hash	malicious	Unknown	Browse
	nabspc.elf	Get hash	malicious	Unknown	Browse
	nabm68k.elf	Get hash	malicious	Unknown	Browse
	zerm68k.elf	Get hash	malicious	Unknown	Browse
	zerx86.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
yellowchink.pirate	splmpsl.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	splarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.26
	nabppc.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
burnthe.libre	zerarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	splmpsl.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.24

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
SKYLINKNL	zermips.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zermpsl.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerppc.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabppc.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabspc.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabm68k.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerm68k.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerx86.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
AMAZON-02US	splmpsl.elf	Get hash	malicious	Unknown	Browse	35.156.178.205
	jklmips.elf	Get hash	malicious	Unknown	Browse	18.249.114.120
	nabarm7.elf	Get hash	malicious	Unknown	Browse	54.249.27.223
	splarm7.elf	Get hash	malicious	Unknown	Browse	50.112.134.202
	nabppc.elf	Get hash	malicious	Unknown	Browse	54.103.157.68
	splarm.elf	Get hash	malicious	Unknown	Browse	44.234.68.54
	splarm5.elf	Get hash	malicious	Unknown	Browse	54.153.219.21
	splmips.elf	Get hash	malicious	Unknown	Browse	44.243.179.59
	splspc.elf	Get hash	malicious	Unknown	Browse	44.234.206.27
	ppc.elf	Get hash	malicious	Unknown	Browse	18.152.145.186
SKYLINKNL	zermips.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zermpsl.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerppc.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabarm7.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabppc.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabspc.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	nabm68k.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerm68k.elf	Get hash	malicious	Unknown	Browse	45.156.86.24
	zerx86.elf	Get hash	malicious	Unknown	Browse	45.156.86.24

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):	6.778186852480431
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	zersh4.elf
File size:	42'540 bytes
MD5:	7d374ef628ba95107c2e86824df9d28e
SHA1:	28aba9664025ef7f633d7404fe93bed9d5ba3f40
SHA256:	0dcf0f404c2f66c472a233c768a4cda0da642bc407c6664d3a4e73169a0f7f39
SHA512:	47563a9d1c3f8387b467842403ad196b903eeb979726e2d5e0b736f5d3fd68a9874584a1ccbee924544a796578c28a2e9b763ce382f1bb19eceeeae8f021a718
SSDEEP:	768:PaIwtBbqETpepUuLGW6GlCoHpX1Oc3C/oAo+Clcn:PaIwtB1o36Gt11N3/1+Clcn
TLSH:	61137E7A847EADD0D19A42B4EC619D381F83F600D6531EBF2E8589A64043EBCF6193F5
File Content Preview:	.ELF.....................@.4...t.......4. ...(...............@...@...........................A...A.\|...............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:	42100
Section Header Size:	40
Number of Section Headers:	11
Header String Table Index:	10

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	0x98c0	0x0	0x6	AX	32
.fini	PROGBITS	0x4099a0	0x99a0	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x4099c4	0x99c4	0x8ec	0x0	0x2	A	4
.ctors	PROGBITS	0x41a2b4	0xa2b4	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x41a2bc	0xa2bc	0x8	0x0	0x3	WA	4
.jcr	PROGBITS	0x41a2c4	0xa2c4	0x4	0x0	0x3	WA	4
.data	PROGBITS	0x41a2c8	0xa2c8	0x168	0x0	0x3	WA	4
.bss	NOBITS	0x41a430	0xa430	0x178	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xa430	0x43	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	0xa2b0	0xa2b0	6.8372	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xa2b4	0x41a2b4	0x41a2b4	0x17c	0x2f4	0.8909	0x6	RW	0x10000	.ctors .dtors .jcr .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
Oct 28, 2024 08:14:59.089229107 CET	55532	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:14:59.094578028 CET	38241	55532	45.156.86.24	192.168.2.15
Oct 28, 2024 08:14:59.094681978 CET	55532	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:14:59.106128931 CET	55532	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:14:59.111464024 CET	38241	55532	45.156.86.24	192.168.2.15
Oct 28, 2024 08:14:59.111501932 CET	55532	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:14:59.116786003 CET	38241	55532	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:09.116070032 CET	55532	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:09.121509075 CET	38241	55532	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:09.478588104 CET	38241	55532	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:09.479264975 CET	55532	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:09.484683990 CET	38241	55532	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:10.513428926 CET	55534	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:10.518733025 CET	38241	55534	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:10.518820047 CET	55534	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:10.519737959 CET	55534	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:10.524964094 CET	38241	55534	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:10.525053024 CET	55534	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:10.530427933 CET	38241	55534	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:21.290343046 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.290358067 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.290364027 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.290368080 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.290496111 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.290496111 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.290496111 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.290496111 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.291548014 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.296900988 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.346366882 CET	38241	55534	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:21.346538067 CET	55534	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:21.351859093 CET	38241	55534	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:21.531858921 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.532052994 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.532320023 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.537705898 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.773135900 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.773245096 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.774422884 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:21.780066013 CET	443	44524	34.254.182.186	192.168.2.15
Oct 28, 2024 08:15:21.780124903 CET	44524	443	192.168.2.15	34.254.182.186
Oct 28, 2024 08:15:22.384150028 CET	39720	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:22.389461994 CET	38241	39720	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:22.389519930 CET	39720	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:23.408834934 CET	39720	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:23.414242983 CET	38241	39720	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:23.414336920 CET	39720	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:23.415529013 CET	39720	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:23.420835018 CET	38241	39720	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:23.420886040 CET	39720	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:23.426382065 CET	38241	39720	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:34.234005928 CET	38241	39720	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:34.234138012 CET	39720	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:34.239461899 CET	38241	39720	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:35.472544909 CET	39722	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:35.477906942 CET	38241	39722	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:35.477966070 CET	39722	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:35.479043007 CET	39722	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:35.484448910 CET	38241	39722	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:35.484510899 CET	39722	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:35.489960909 CET	38241	39722	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:46.323803902 CET	38241	39722	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:46.323929071 CET	39722	38241	192.168.2.15	45.156.86.26
Oct 28, 2024 08:15:46.329292059 CET	38241	39722	45.156.86.26	192.168.2.15
Oct 28, 2024 08:15:47.356640100 CET	55540	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:47.362032890 CET	38241	55540	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:47.362119913 CET	55540	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:47.363568068 CET	55540	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:47.368921995 CET	38241	55540	45.156.86.24	192.168.2.15
Oct 28, 2024 08:15:47.368983984 CET	55540	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:15:47.374376059 CET	38241	55540	45.156.86.24	192.168.2.15
Oct 28, 2024 08:16:17.385859966 CET	55540	38241	192.168.2.15	45.156.86.24
Oct 28, 2024 08:16:17.391411066 CET	38241	55540	45.156.86.24	192.168.2.15
Oct 28, 2024 08:16:17.635927916 CET	38241	55540	45.156.86.24	192.168.2.15
Oct 28, 2024 08:16:17.636145115 CET	55540	38241	192.168.2.15	45.156.86.24

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 28, 2024 08:14:59.049736023 CET	53502	53	192.168.2.15	185.181.61.24
Oct 28, 2024 08:14:59.083374023 CET	53	53502	185.181.61.24	192.168.2.15
Oct 28, 2024 08:15:10.482933044 CET	47746	53	192.168.2.15	81.169.136.222
Oct 28, 2024 08:15:10.512758970 CET	53	47746	81.169.136.222	192.168.2.15
Oct 28, 2024 08:15:22.349869013 CET	45004	53	192.168.2.15	185.181.61.24
Oct 28, 2024 08:15:22.383383036 CET	53	45004	185.181.61.24	192.168.2.15
Oct 28, 2024 08:15:35.237677097 CET	46962	53	192.168.2.15	194.36.144.87
Oct 28, 2024 08:15:35.471298933 CET	53	46962	194.36.144.87	192.168.2.15
Oct 28, 2024 08:15:47.327490091 CET	46457	53	192.168.2.15	81.169.136.222
Oct 28, 2024 08:15:47.355617046 CET	53	46457	81.169.136.222	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 28, 2024 08:14:59.049736023 CET	192.168.2.15	185.181.61.24	0x8348	Standard query (0)	burnthe.libre	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:15:10.482933044 CET	192.168.2.15	81.169.136.222	0xd478	Standard query (0)	yellowchink.pirate	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:15:22.349869013 CET	192.168.2.15	185.181.61.24	0x58d9	Standard query (0)	yellowchink.pirate	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:15:35.237677097 CET	192.168.2.15	194.36.144.87	0x57e5	Standard query (0)	netfags.geek. [malformed]	256	279	false
Oct 28, 2024 08:15:47.327490091 CET	192.168.2.15	81.169.136.222	0x23e9	Standard query (0)	burnthe.libre	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
Oct 28, 2024 08:14:59.083374023 CET	185.181.61.24	192.168.2.15	0x8348	No error (0)	burnthe.libre		45.156.86.26	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:14:59.083374023 CET	185.181.61.24	192.168.2.15	0x8348	No error (0)	burnthe.libre		45.156.86.24	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:15:10.512758970 CET	81.169.136.222	192.168.2.15	0xd478	No error (0)	yellowchink.pirate		45.156.86.24	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:15:22.383383036 CET	185.181.61.24	192.168.2.15	0x58d9	No error (0)	yellowchink.pirate		45.156.86.24	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:15:22.383383036 CET	185.181.61.24	192.168.2.15	0x58d9	No error (0)	yellowchink.pirate		45.156.86.26	A (IP address)	IN (0x0001)	false
Oct 28, 2024 08:15:35.471298933 CET	194.36.144.87	192.168.2.15	0x57e5	Format error (1)	netfags.geek. [malformed]	none	none	256	279	false
Oct 28, 2024 08:15:47.355617046 CET	81.169.136.222	192.168.2.15	0x23e9	No error (0)	burnthe.libre		45.156.86.24	A (IP address)	IN (0x0001)	false

HTTPS Connections

Timestamp	Source IP	Source Port	Dest IP	Dest Port	Subject	Issuer	Not Before	Not After	JA3 SSL Client Fingerprint	JA3 SSL Client Digest
Oct 28, 2024 08:15:21.290364027 CET	34.254.182.186	443	192.168.2.15	44524	CN=motd.ubuntu.com CN=R11, O=Let's Encrypt, C=US	CN=R11, O=Let's Encrypt, C=US CN=ISRG Root X1, O=Internet Security Research Group, C=US	Mon Oct 21 10:21:37 CEST 2024 Wed Mar 13 01:00:00 CET 2024	Sun Jan 19 09:21:36 CET 2025 Sat Mar 13 00:59:59 CET 2027
Oct 28, 2024 08:15:21.290364027 CET	34.254.182.186	443	192.168.2.15	44524	CN=R11, O=Let's Encrypt, C=US	CN=ISRG Root X1, O=Internet Security Research Group, C=US	Wed Mar 13 01:00:00 CET 2024	Sat Mar 13 00:59:59 CET 2027

System Behavior

Analysis Process: zersh4.elf PID: 5521, Parent PID: 5440

General

Start time (UTC):	07:14:58
Start date (UTC):	28/10/2024
Path:	/tmp/zersh4.elf
Arguments:	/tmp/zersh4.elf
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: zersh4.elf PID: 5523, Parent PID: 5521

General

Start time (UTC):	07:14:58
Start date (UTC):	28/10/2024
Path:	/tmp/zersh4.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: zersh4.elf PID: 5525, Parent PID: 5523

General

Start time (UTC):	07:14:58
Start date (UTC):	28/10/2024
Path:	/tmp/zersh4.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: dash PID: 5557, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5557, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.4AzBZnn3fe /tmp/tmp.7GIChT4WWs /tmp/tmp.SC87CJbjay
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 5558, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: cat PID: 5558, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.4AzBZnn3fe
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

Chronological Activities

Analysis Process: dash PID: 5559, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: head PID: 5559, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

Chronological Activities

Analysis Process: dash PID: 5560, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: tr PID: 5560, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

Chronological Activities

Analysis Process: dash PID: 5561, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: cut PID: 5561, Parent PID: 3670

General

Start time (UTC):	07:15:20
Start date (UTC):	28/10/2024
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

Chronological Activities

Analysis Process: dash PID: 5562, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: cat PID: 5562, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.4AzBZnn3fe
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

Chronological Activities

Analysis Process: dash PID: 5563, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: head PID: 5563, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

Chronological Activities

Analysis Process: dash PID: 5564, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: tr PID: 5564, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

Chronological Activities

Analysis Process: dash PID: 5565, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: cut PID: 5565, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

Chronological Activities

Analysis Process: dash PID: 5566, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5566, Parent PID: 3670

General

Start time (UTC):	07:15:21
Start date (UTC):	28/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.4AzBZnn3fe /tmp/tmp.7GIChT4WWs /tmp/tmp.SC87CJbjay
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

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 a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088or port 587as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
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

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 zersh4.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Compliance

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

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

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

UDP Packets

DNS Queries

DNS Answers

HTTPS Connections

System Behavior

Analysis Process: zersh4.elf PID: 5521, Parent PID: 5440

General

Chronological Activities

Analysis Process: zersh4.elf PID: 5523, Parent PID: 5521

General

Chronological Activities

Analysis Process: zersh4.elf PID: 5525, Parent PID: 5523

General

Chronological Activities

Analysis Process: dash PID: 5557, Parent PID: 3670

General

Chronological Activities

Analysis Process: rm PID: 5557, Parent PID: 3670

General

Chronological Activities

Analysis Process: dash PID: 5558, Parent PID: 3670

General

Chronological Activities

Analysis Process: cat PID: 5558, Parent PID: 3670

Linux Analysis Report
zersh4.elf