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Linux Analysis Report
sync.sh4.elf

Overview

General Information

Sample name:	sync.sh4.elf
Analysis ID:	1641078
MD5:	a2f002cd1f103b10539fd1662ba22d91
SHA1:	1fe07ba6950e07bf86f218cd53baa66d71ea6ec1
SHA256:	c1a1881cb3a72a7ffb9d2d60e4c233e82cc65debf6bc23a94186f03afa45c1a2
Tags:	elfGafgytuser-abuse_ch
Infos:

Detection

Score:	64
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Performs DNS TXT record lookups

Sample deletes itself

Detected TCP or UDP traffic on non-standard ports

ELF contains segments with high entropy indicating compressed/encrypted content

Sample has stripped symbol table

Sleeps for long times indicative of sandbox evasion

Tries to resolve domain names, but no domain seems valid (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:	1641078
Start date and time:	2025-03-18 02:35:59 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 25s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Sample name:	sync.sh4.elf
Detection:	MAL
Classification:	mal64.evad.linELF@0/0@15/0

Runtime Messages

Command:	/tmp/sync.sh4.elf
PID:	5436
Exit Code:	1
Exit Code Info:
Killed:	False
Standard Output:	syncne
Standard Error:

Process Tree

system is lnxubuntu20

sync.sh4.elf (PID: 5436, Parent: 5363, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/sync.sh4.elf

sync.sh4.elf New Fork (PID: 5438, Parent: 5436)

sync.sh4.elf New Fork (PID: 5440, Parent: 5438)

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

ET MALWARE Potential DNS Command and Control via TXT queries

Timestamp	SID	Severity	Classtype	Source IP	Source Port	Destination IP	Destination Port	Protocol
2025-03-18T02:36:59.390187+0100	2013514	1	A Network Trojan was detected	192.168.2.13	41989	1.0.0.1	53	UDP

ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Inbound)

Timestamp	SID	Severity	Classtype	Source IP	Source Port	Destination IP	Destination Port	Protocol
2025-03-18T02:38:02.862401+0100	2848607	1	Malware Command and Control Activity Detected	185.194.205.79	61003	192.168.2.13	38598	TCP

ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound)

Timestamp	SID	Severity	Classtype	Source IP	Source Port	Destination IP	Destination Port	Protocol
2025-03-18T02:38:02.653902+0100	2848606	1	Malware Command and Control Activity Detected	192.168.2.13	38598	185.194.205.79	61003	TCP

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Hooking and other Techniques for Hiding and Protection
• Malware Analysis System Evasion
• HIPS / PFW / Operating System Protection Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: sync.sh4.elf	Virustotal: Detection: 46%			Perma Link
Source: sync.sh4.elf	ReversingLabs: Detection: 41%

Networking

Suricata IDS alerts for network traffic

Source: Network traffic	Suricata IDS: 2013514 - Severity 1 - ET MALWARE Potential DNS Command and Control via TXT queries : 192.168.2.13:41989 -> 1.0.0.1:53
Source: Network traffic	Suricata IDS: 2848606 - Severity 1 - ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound) : 192.168.2.13:38598 -> 185.194.205.79:61003
Source: Network traffic	Suricata IDS: 2848607 - Severity 1 - ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Inbound) : 185.194.205.79:61003 -> 192.168.2.13:38598

Source: global traffic

TCP traffic: 192.168.2.13:38598 -> 185.194.205.79:61003

Source: unknown

DNS traffic detected: query: dnsresolve.socialgains.cf replaycode: Name error (3)

Source: unknown	TCP traffic detected without corresponding DNS query: 185.194.205.79
Source: unknown	TCP traffic detected without corresponding DNS query: 185.194.205.79
Source: unknown	TCP traffic detected without corresponding DNS query: 185.194.205.79
Source: unknown	TCP traffic detected without corresponding DNS query: 185.194.205.79
Source: unknown	TCP traffic detected without corresponding DNS query: 185.194.205.79
Source: unknown	UDP traffic detected without corresponding DNS query: 1.0.0.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.0.0.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.0.0.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.0.0.1
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: dnsresolve.socialgains.cf

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal64.evad.linELF@0/0@15/0

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/sync.sh4.elf (PID: 5436)

File: /tmp/sync.sh4.elf

Jump to behavior

Source: sync.sh4.elf

Submission file: segment LOAD with 7.0065 entropy (max. 8.0)

Source: /tmp/sync.sh4.elf (PID: 5440)	Sleeps longer then 60s: 60.0s			Jump to behavior
Source: /tmp/sync.sh4.elf (PID: 5440)	Sleeps longer then 60s: 60.0s			Jump to behavior

Source: /tmp/sync.sh4.elf (PID: 5436)

Queries kernel information via 'uname':

Jump to behavior

Source: sync.sh4.elf, 5436.1.00007ffe02ebb000.00007ffe02edc000.rw-.sdmp	Binary or memory string: 22x86_64/usr/bin/qemu-sh4/tmp/sync.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/sync.sh4.elf
Source: sync.sh4.elf, 5436.1.00007ffe02ebb000.00007ffe02edc000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: sync.sh4.elf, 5436.1.00005618a4d75000.00005618a4dd8000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4
Source: sync.sh4.elf, 5436.1.00005618a4d75000.00005618a4dd8000.rw-.sdmp	Binary or memory string: V5!/etc/qemu-binfmt/sh4

HIPS / PFW / Operating System Protection Evasion

Performs DNS TXT record lookups

Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf
Source: Traffic	DNS traffic detected: queries for: dnsresolve.socialgains.cf

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 Virtualization/Sandbox Evasion	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	1 Obfuscated Files or Information	LSASS Memory	1 Virtualization/Sandbox Evasion	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)	1 File Deletion	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

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Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Screenshots

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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
sync.sh4.elf	46%	Virustotal		Browse
sync.sh4.elf	42%	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
dnsresolve.socialgains.cf	unknown	unknown	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
185.194.205.79	unknown	France		204145	HTSENSEFR	true

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.194.205.79	sync.x86.elf	Get hash	malicious	Unknown	Browse
	sync.x86.elf	Get hash	malicious	Unknown	Browse
	sync.sh4.elf	Get hash	malicious	Unknown	Browse
	sync.arm5.elf	Get hash	malicious	Unknown	Browse
	sync.x86_64.elf	Get hash	malicious	Unknown	Browse
	sync.mipsel.elf	Get hash	malicious	Unknown	Browse
	sync.superh.elf	Get hash	malicious	Unknown	Browse
	sync.arm7.elf	Get hash	malicious	Unknown	Browse
	sync.arm6.elf	Get hash	malicious	Unknown	Browse
	sync.arm4.elf	Get hash	malicious	Unknown	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
HTSENSEFR	sync.x86.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.x86.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.sh4.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.arm5.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.x86_64.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.mipsel.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.superh.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.arm7.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.arm6.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.arm4.elf	Get hash	malicious	Unknown	Browse	185.194.205.79

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):	6.949938105295442
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	sync.sh4.elf
File size:	51'836 bytes
MD5:	a2f002cd1f103b10539fd1662ba22d91
SHA1:	1fe07ba6950e07bf86f218cd53baa66d71ea6ec1
SHA256:	c1a1881cb3a72a7ffb9d2d60e4c233e82cc65debf6bc23a94186f03afa45c1a2
SHA512:	1a7ec67c2fa39a1e40886b9bd953f7aad54d0047d685e44734cd4fb85d0ff7baf95c18cbd57c551887310e3b9f678d5f6736e5e48f81cd79e79577102bda1ff3
SSDEEP:	1536:YC388H4HRn+vb5QR7+sHcdByStKgxBvseXQCR+kwf:JtH4HRn+vtQR7+sHcqhgUeXQ2wf
TLSH:	80338D939C25AE48C0B5E5F271706FBAF763E8049A875FDA2992C22A9453DCDF0453F0
File Content Preview:	.ELF.....................@.4...........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:	51436
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	0xa900	0x0	0x6	AX	32
.fini	PROGBITS	0x40a9e0	0xa9e0	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x40aa04	0xaa04	0x1ab4	0x0	0x2	A	4
.ctors	PROGBITS	0x41c4bc	0xc4bc	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x41c4c4	0xc4c4	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x41c4d0	0xc4d0	0x3dc	0x0	0x3	WA	4
.bss	NOBITS	0x41c8ac	0xc8ac	0xa2ac	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xc8ac	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	0xc4b8	0xc4b8	7.0065	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xc4bc	0x41c4bc	0x41c4bc	0x3f0	0xa69c	3.5892	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

Suricata IDS Alerts

Timestamp	SID	Signature	Severity	Source IP	Source Port	Dest IP	Dest Port	Protocol
2025-03-18T02:36:59.390187+0100	2013514	ET MALWARE Potential DNS Command and Control via TXT queries	1	192.168.2.13	41989	1.0.0.1	53	UDP
2025-03-18T02:38:02.653902+0100	2848606	ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound)	1	192.168.2.13	38598	185.194.205.79	61003	TCP
2025-03-18T02:38:02.862401+0100	2848607	ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Inbound)	1	185.194.205.79	61003	192.168.2.13	38598	TCP

Network Port Distribution

Total Packets: 20
• 61003 undefined
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 18, 2025 02:37:02.588203907 CET	38598	61003	192.168.2.13	185.194.205.79
Mar 18, 2025 02:37:02.592814922 CET	61003	38598	185.194.205.79	192.168.2.13
Mar 18, 2025 02:37:02.592869043 CET	38598	61003	192.168.2.13	185.194.205.79
Mar 18, 2025 02:37:02.592962980 CET	38598	61003	192.168.2.13	185.194.205.79
Mar 18, 2025 02:37:02.597603083 CET	61003	38598	185.194.205.79	192.168.2.13
Mar 18, 2025 02:38:02.653902054 CET	38598	61003	192.168.2.13	185.194.205.79
Mar 18, 2025 02:38:02.658716917 CET	61003	38598	185.194.205.79	192.168.2.13
Mar 18, 2025 02:38:02.862401009 CET	61003	38598	185.194.205.79	192.168.2.13
Mar 18, 2025 02:38:02.862564087 CET	38598	61003	192.168.2.13	185.194.205.79

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 18, 2025 02:36:46.510251999 CET	38372	53	192.168.2.13	1.0.0.1
Mar 18, 2025 02:36:46.691287041 CET	53	38372	1.0.0.1	192.168.2.13
Mar 18, 2025 02:36:47.694413900 CET	56676	53	192.168.2.13	8.8.4.4
Mar 18, 2025 02:36:47.722734928 CET	53	56676	8.8.4.4	192.168.2.13
Mar 18, 2025 02:36:48.725115061 CET	44724	53	192.168.2.13	8.8.8.8
Mar 18, 2025 02:36:48.754106998 CET	53	44724	8.8.8.8	192.168.2.13
Mar 18, 2025 02:36:49.756724119 CET	59364	53	192.168.2.13	8.8.4.4
Mar 18, 2025 02:36:49.771475077 CET	53	59364	8.8.4.4	192.168.2.13
Mar 18, 2025 02:36:50.774213076 CET	56920	53	192.168.2.13	1.1.1.1
Mar 18, 2025 02:36:50.942290068 CET	53	56920	1.1.1.1	192.168.2.13
Mar 18, 2025 02:36:51.944781065 CET	37380	53	192.168.2.13	1.0.0.1
Mar 18, 2025 02:36:52.125825882 CET	53	37380	1.0.0.1	192.168.2.13
Mar 18, 2025 02:36:53.128854990 CET	34722	53	192.168.2.13	1.0.0.1
Mar 18, 2025 02:36:53.169512987 CET	53	34722	1.0.0.1	192.168.2.13
Mar 18, 2025 02:36:54.171549082 CET	43400	53	192.168.2.13	8.8.4.4
Mar 18, 2025 02:36:54.186568975 CET	53	43400	8.8.4.4	192.168.2.13
Mar 18, 2025 02:36:55.188374043 CET	40949	53	192.168.2.13	8.8.4.4
Mar 18, 2025 02:36:55.202898026 CET	53	40949	8.8.4.4	192.168.2.13
Mar 18, 2025 02:36:56.205117941 CET	50698	53	192.168.2.13	8.8.4.4
Mar 18, 2025 02:36:56.219652891 CET	53	50698	8.8.4.4	192.168.2.13
Mar 18, 2025 02:36:57.221879959 CET	33097	53	192.168.2.13	1.1.1.1
Mar 18, 2025 02:36:57.358555079 CET	53	33097	1.1.1.1	192.168.2.13
Mar 18, 2025 02:36:58.360497952 CET	50015	53	192.168.2.13	8.8.4.4
Mar 18, 2025 02:36:58.388334990 CET	53	50015	8.8.4.4	192.168.2.13
Mar 18, 2025 02:36:59.390187025 CET	41989	53	192.168.2.13	1.0.0.1
Mar 18, 2025 02:36:59.414829969 CET	53	41989	1.0.0.1	192.168.2.13
Mar 18, 2025 02:37:00.416882038 CET	47811	53	192.168.2.13	1.1.1.1
Mar 18, 2025 02:37:00.543433905 CET	53	47811	1.1.1.1	192.168.2.13
Mar 18, 2025 02:37:01.545370102 CET	46592	53	192.168.2.13	1.1.1.1
Mar 18, 2025 02:37:01.584938049 CET	53	46592	1.1.1.1	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Mar 18, 2025 02:36:46.510251999 CET	192.168.2.13	1.0.0.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:47.694413900 CET	192.168.2.13	8.8.4.4	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:48.725115061 CET	192.168.2.13	8.8.8.8	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:49.756724119 CET	192.168.2.13	8.8.4.4	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:50.774213076 CET	192.168.2.13	1.1.1.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:51.944781065 CET	192.168.2.13	1.0.0.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:53.128854990 CET	192.168.2.13	1.0.0.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:54.171549082 CET	192.168.2.13	8.8.4.4	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:55.188374043 CET	192.168.2.13	8.8.4.4	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:56.205117941 CET	192.168.2.13	8.8.4.4	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:57.221879959 CET	192.168.2.13	1.1.1.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:58.360497952 CET	192.168.2.13	8.8.4.4	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:36:59.390187025 CET	192.168.2.13	1.0.0.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:37:00.416882038 CET	192.168.2.13	1.1.1.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false
Mar 18, 2025 02:37:01.545370102 CET	192.168.2.13	1.1.1.1	0xba49	Standard query (0)	dnsresolve.socialgains.cf	16	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Mar 18, 2025 02:36:46.691287041 CET	1.0.0.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:47.722734928 CET	8.8.4.4	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:48.754106998 CET	8.8.8.8	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:49.771475077 CET	8.8.4.4	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:50.942290068 CET	1.1.1.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:52.125825882 CET	1.0.0.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:53.169512987 CET	1.0.0.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:54.186568975 CET	8.8.4.4	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:55.202898026 CET	8.8.4.4	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:56.219652891 CET	8.8.4.4	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:57.358555079 CET	1.1.1.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:58.388334990 CET	8.8.4.4	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:36:59.414829969 CET	1.0.0.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:37:00.543433905 CET	1.1.1.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false
Mar 18, 2025 02:37:01.584938049 CET	1.1.1.1	192.168.2.13	0xba49	Name error (3)	dnsresolve.socialgains.cf	none	none	16	IN (0x0001)	false

System Behavior

Analysis Process: sync.sh4.elf PID: 5436, Parent PID: 5363

General

Start time (UTC):	01:36:45
Start date (UTC):	18/03/2025
Path:	/tmp/sync.sh4.elf
Arguments:	/tmp/sync.sh4.elf
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

File Activities

File Opened

File Deleted

File Read

Directory Deleted

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: sync.sh4.elf PID: 5438, Parent PID: 5436

General

Start time (UTC):	01:36:45
Start date (UTC):	18/03/2025
Path:	/tmp/sync.sh4.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Process Activities

Process Forked

Thread Sleep

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: sync.sh4.elf PID: 5440, Parent PID: 5438

General

Start time (UTC):	01:36:45
Start date (UTC):	18/03/2025
Path:	/tmp/sync.sh4.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Description:	Adversaries may employ various means to detect and avoid virtualization and analysis environments. This may include changing behaviors based on the results of checks for the presence of artifacts indicative of a virtual machine environment (VME) or sandbox. If the adversary detects a VME, they may alter their malware to disengage from the victim or conceal the core functions of the implant. They may also search for VME artifacts before dropping secondary or additional payloads. Adversaries may use the information learned from [Virtualization/Sandbox Evasion](https://attack.mitre.org/techniques/T1497) during automated discovery to shape follow-on behaviors.
Tactics:	Defense Evasion, Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit. This is common behavior that can be used across different platforms and the network to evade defenses.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Module: Module Load, Process: OS API Execution, Process: Process Creation, Script: Script Execution, WMI: WMI Creation, Windows Registry: Windows Registry Key Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary (ex: Ingress Tool Transfer ) may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Deletion
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

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 sync.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

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

HIPS / PFW / Operating System Protection 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

Suricata IDS Alerts

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: sync.sh4.elf PID: 5436, Parent PID: 5363

General

File Activities

File Opened

File Deleted

File Read

Directory Deleted

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: sync.sh4.elf PID: 5438, Parent PID: 5436

General

Process Activities

Process Forked

Linux Analysis Report
sync.sh4.elf