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Linux Analysis Report
zersh4.elf

Overview

General Information

Sample name:	zersh4.elf
Analysis ID:	1643359
MD5:	d0c8cacaacda4a5913390fb80d277eb4
SHA1:	ec7c186b799114c34767f5e4156bc375731ab98b
SHA256:	8110805cc9f3281bb755e647428044f0736dd566e1350658d95dd6e3c9452bd8
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Detected TCP or UDP traffic on non-standard ports

Enumerates processes within the "proc" file system

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

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:	42.0.0 Malachite
Analysis ID:	1643359
Start date and time:	2025-03-19 19:37:19 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 43s
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:	mal48.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/zersh4.elf
PID:	5444
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	gosh that chinese family at the other table sure ate a lot
Standard Error:

Process Tree

system is lnxubuntu20

zersh4.elf (PID: 5444, Parent: 5362, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/zersh4.elf

zersh4.elf New Fork (PID: 5446, Parent: 5444)

zersh4.elf New Fork (PID: 5448, Parent: 5446)

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: zersh4.elf	Virustotal: Detection: 23%			Perma Link
Source: zersh4.elf	ReversingLabs: Detection: 22%

Source: global traffic

TCP traffic: 192.168.2.13:40566 -> 185.220.204.227:1440

Source: /tmp/zersh4.elf (PID: 5444)

Socket: 127.0.0.1:39148

Jump to behavior

Source: unknown	UDP traffic detected without corresponding DNS query: 202.61.197.122
Source: unknown	UDP traffic detected without corresponding DNS query: 168.235.111.72

Source: global traffic	DNS traffic detected: DNS query: watchmepull.dyn
Source: global traffic	DNS traffic detected: DNS query: ohlookthereismyboats.geek

Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne
Source: Initial sample	String containing 'busybox' found: /bin/busybox echo -ne >> > .d

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/5385/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/230/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/110/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/231/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/111/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/232/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/112/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/233/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/113/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/234/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/114/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/235/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/115/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/236/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/116/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/237/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/117/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/238/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/118/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/239/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/119/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/3633/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/914/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/10/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/917/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/11/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/12/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/13/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/14/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/15/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/16/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/17/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/18/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/19/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/240/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/3095/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/120/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/241/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/121/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/242/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/1/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/122/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/243/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/2/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/123/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/244/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/3/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/124/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/245/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/1588/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/125/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/4/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/246/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/126/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/5/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/247/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/127/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/6/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/248/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/128/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/7/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/249/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/129/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/8/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/800/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/9/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/1906/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/802/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/803/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/20/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/21/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/22/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/23/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/24/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/25/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/26/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/27/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/28/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/29/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/3420/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/1482/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/490/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/1480/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/250/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/371/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/130/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/251/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/5281/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/131/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/252/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/132/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/253/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/254/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/1238/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/134/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/255/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/256/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/257/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/378/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/3413/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/258/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/259/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/1475/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/936/comm	Jump to behavior
Source: /tmp/zersh4.elf (PID: 5444)	File opened: /proc/3777/comm	Jump to behavior

Source: /tmp/zersh4.elf (PID: 5444)

Queries kernel information via 'uname':

Jump to behavior

Source: zersh4.elf, 5444.1.00007ffe7ef73000.00007ffe7ef94000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: zersh4.elf, 5444.1.00007ffe7ef73000.00007ffe7ef94000.rw-.sdmp	Binary or memory string: x86_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, 5444.1.000055b734eda000.000055b734f5e000.rw-.sdmp	Binary or memory string: U5!/etc/qemu-binfmt/sh4
Source: zersh4.elf, 5444.1.000055b734eda000.000055b734f5e000.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	Direct Volume Access	1 OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Standard Port	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	1 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
zersh4.elf	23%	Virustotal		Browse
zersh4.elf	22%	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
watchmepull.dyn	45.147.251.145	true	false		high
ohlookthereismyboats.geek	45.147.251.145	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
185.220.204.227	unknown	Israel		41436	CLOUDWEBMANAGE-EUGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.220.204.227	zerarm.elf	Get hash	malicious	Unknown	Browse
	zermips.elf	Get hash	malicious	Unknown	Browse
	zerx86.elf	Get hash	malicious	Unknown	Browse
	zerppc.elf	Get hash	malicious	Unknown	Browse
	zermpsl.elf	Get hash	malicious	Unknown	Browse
	zerm68k.elf	Get hash	malicious	Unknown	Browse
	zersh4.elf	Get hash	malicious	Unknown	Browse
	zerarm7.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
ohlookthereismyboats.geek	jklarm5.elf	Get hash	malicious	Unknown	Browse	104.248.47.182
	jklx86.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	nklx86.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	nklarm7.elf	Get hash	malicious	Unknown	Browse	45.147.251.145
	nabarm5.elf	Get hash	malicious	Unknown	Browse	45.147.251.145
	zerarm.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	splmips.elf	Get hash	malicious	Unknown	Browse	45.147.251.145
	jklmpsl.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	jklmips.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	arm.elf	Get hash	malicious	Unknown	Browse	185.220.204.227

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CLOUDWEBMANAGE-EUGB	zerarm.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	zermips.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	zerx86.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	zerppc.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	zermpsl.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	zerm68k.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	zersh4.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	zerarm7.elf	Get hash	malicious	Unknown	Browse	185.220.204.227
	https://basvur-acildenizv2denizkredi.site/	Get hash	malicious	HTMLPhisher	Browse	5.180.183.64
	https://basvur-acildenizv2denizkredi.xyz/	Get hash	malicious	HTMLPhisher	Browse	5.180.183.64

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):	6.7477100583201315
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	zersh4.elf
File size:	42'260 bytes
MD5:	d0c8cacaacda4a5913390fb80d277eb4
SHA1:	ec7c186b799114c34767f5e4156bc375731ab98b
SHA256:	8110805cc9f3281bb755e647428044f0736dd566e1350658d95dd6e3c9452bd8
SHA512:	b72d71a9b26cea9fa8dbefa42a1ee6804613e5da94e7bc2a94d012e65fe286cd427f3ab99be79641143d078fdad76b5cfdefef03dfd32e5c071f8227c9678fc7
SSDEEP:	768:CZahPwtkdSs6Gq4UFKvzMGCWc6U+C3+oSXrCZGXP:0adwtkTVOiQG66U+GkrCZGXP
TLSH:	AB137D76CCADAE94C51992B4F834897C1F63F200C6571EFB5A49852680439BCFB09BF9
File Content Preview:	.ELF.....................@.4...\.......4. ...(...............@...@.X...X...............\...\.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:	41820
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	0x97e0	0x0	0x6	AX	32
.fini	PROGBITS	0x4098c0	0x98c0	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x4098e4	0x98e4	0x874	0x0	0x2	A	4
.ctors	PROGBITS	0x41a15c	0xa15c	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x41a164	0xa164	0x8	0x0	0x3	WA	4
.jcr	PROGBITS	0x41a16c	0xa16c	0x4	0x0	0x3	WA	4
.data	PROGBITS	0x41a170	0xa170	0x1a8	0x0	0x3	WA	4
.bss	NOBITS	0x41a318	0xa318	0x264	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xa318	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	0xa158	0xa158	6.8034	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xa15c	0x41a15c	0x41a15c	0x1bc	0x420	2.3289	0x6	RW	0x10000	.ctors .dtors .jcr .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: 14
• 1440 undefined
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 19, 2025 19:38:17.560584068 CET	40566	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:17.565308094 CET	1440	40566	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:17.565546036 CET	40566	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:17.581842899 CET	40566	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:17.586564064 CET	1440	40566	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:17.586606979 CET	40566	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:17.591347933 CET	1440	40566	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:27.592061996 CET	40566	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:27.596868038 CET	1440	40566	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:27.780064106 CET	1440	40566	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:27.780375957 CET	40566	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:27.785175085 CET	1440	40566	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:28.870593071 CET	40568	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:28.875351906 CET	1440	40568	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:28.875430107 CET	40568	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:28.876166105 CET	40568	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:28.880860090 CET	1440	40568	185.220.204.227	192.168.2.13
Mar 19, 2025 19:38:28.880914927 CET	40568	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:38:28.885611057 CET	1440	40568	185.220.204.227	192.168.2.13
Mar 19, 2025 19:39:28.934314966 CET	40568	1440	192.168.2.13	185.220.204.227
Mar 19, 2025 19:39:28.940119028 CET	1440	40568	185.220.204.227	192.168.2.13
Mar 19, 2025 19:39:29.121844053 CET	1440	40568	185.220.204.227	192.168.2.13
Mar 19, 2025 19:39:29.122040987 CET	40568	1440	192.168.2.13	185.220.204.227

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 19, 2025 19:38:17.541085005 CET	57192	53	192.168.2.13	202.61.197.122
Mar 19, 2025 19:38:17.558522940 CET	53	57192	202.61.197.122	192.168.2.13
Mar 19, 2025 19:38:28.782557964 CET	49028	53	192.168.2.13	168.235.111.72
Mar 19, 2025 19:38:28.869832039 CET	53	49028	168.235.111.72	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 19, 2025 19:38:17.541085005 CET	192.168.2.13	202.61.197.122	0xc195	Standard query (0)	watchmepull.dyn	A (IP address)	IN (0x0001)	false
Mar 19, 2025 19:38:28.782557964 CET	192.168.2.13	168.235.111.72	0x9d85	Standard query (0)	ohlookthereismyboats.geek	A (IP address)	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	Address	Type	Class	DNS over HTTPS
Mar 19, 2025 19:38:17.558522940 CET	202.61.197.122	192.168.2.13	0xc195	No error (0)	watchmepull.dyn	45.147.251.145	A (IP address)	IN (0x0001)	false
Mar 19, 2025 19:38:17.558522940 CET	202.61.197.122	192.168.2.13	0xc195	No error (0)	watchmepull.dyn	185.220.204.227	A (IP address)	IN (0x0001)	false
Mar 19, 2025 19:38:17.558522940 CET	202.61.197.122	192.168.2.13	0xc195	No error (0)	watchmepull.dyn	104.248.47.182	A (IP address)	IN (0x0001)	false
Mar 19, 2025 19:38:28.869832039 CET	168.235.111.72	192.168.2.13	0x9d85	No error (0)	ohlookthereismyboats.geek	45.147.251.145	A (IP address)	IN (0x0001)	false
Mar 19, 2025 19:38:28.869832039 CET	168.235.111.72	192.168.2.13	0x9d85	No error (0)	ohlookthereismyboats.geek	185.220.204.227	A (IP address)	IN (0x0001)	false
Mar 19, 2025 19:38:28.869832039 CET	168.235.111.72	192.168.2.13	0x9d85	No error (0)	ohlookthereismyboats.geek	104.248.47.182	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: zersh4.elf PID: 5444, Parent PID: 5362

General

Start time (UTC):	18:38:15
Start date (UTC):	19/03/2025
Path:	/tmp/zersh4.elf
Arguments:	/tmp/zersh4.elf
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

File Activities

File Opened

File Read

File Moved

Directory Enumerated

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Listening

Socket Connecting

Chronological Activities

Analysis Process: zersh4.elf PID: 5446, Parent PID: 5444

General

Start time (UTC):	18:38:16
Start date (UTC):	19/03/2025
Path:	/tmp/zersh4.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Process Activities

Process Forked

Thread Sleep

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: zersh4.elf PID: 5448, Parent PID: 5446

General

Start time (UTC):	18:38:16
Start date (UTC):	19/03/2025
Path:	/tmp/zersh4.elf
Arguments:	-
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 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

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

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: zersh4.elf PID: 5444, Parent PID: 5362

General

File Activities

File Opened

File Read

File Moved

Directory Enumerated

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Listening

Socket Connecting

Chronological Activities

Analysis Process: zersh4.elf PID: 5446, Parent PID: 5444

General

Process Activities

Process Forked

Thread Sleep

Network Activities

Socket Connecting

Linux Analysis Report
zersh4.elf