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Linux Analysis Report
sync.superh.elf

Overview

General Information

Sample name:	sync.superh.elf
Analysis ID:	1650812
MD5:	7d76cb7eac1241415106aaf7c078e07a
SHA1:	5bc63c5149fa219e24a64872d25e241b0b2eb4b4
SHA256:	fa1cee13ec92b30b427097d26f843403e2acb355def3d034df662bf4d208ba01
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	60
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Sample deletes itself

Detected TCP or UDP traffic on non-standard ports

ELF contains segments with high entropy indicating compressed/encrypted content

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

Sample contains strings that are potentially command strings

Sample has stripped symbol table

Sleeps for long times indicative of sandbox evasion

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1650812
Start date and time:	2025-03-28 04:16:39 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 2s
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.superh.elf
Detection:	MAL
Classification:	mal60.evad.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/sync.superh.elf
PID:	6267
Exit Code:	1
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

sync.superh.elf (PID: 6267, Parent: 6191, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/sync.superh.elf

sync.superh.elf New Fork (PID: 6269, Parent: 6267)

sync.superh.elf New Fork (PID: 6271, Parent: 6269)

dash New Fork (PID: 6318, Parent: 4331)

rm (PID: 6318, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.EwpH9CPFHj /tmp/tmp.gcQD1F7DYS /tmp/tmp.sAhA6tNmot

dash New Fork (PID: 6319, Parent: 4331)

rm (PID: 6319, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.EwpH9CPFHj /tmp/tmp.gcQD1F7DYS /tmp/tmp.sAhA6tNmot

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

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

Timestamp	SID	Severity	Classtype	Source IP	Source Port	Destination IP	Destination Port	Protocol
2025-03-28T04:19:25.551502+0100	2848607	1	Malware Command and Control Activity Detected	185.194.205.79	61006	192.168.2.23	60028	TCP

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

Timestamp	SID	Severity	Classtype	Source IP	Source Port	Destination IP	Destination Port	Protocol
2025-03-28T04:18:18.380106+0100	2848606	1	Malware Command and Control Activity Detected	192.168.2.23	60028	185.194.205.79	61006	TCP
2025-03-28T04:18:49.409447+0100	2848606	1	Malware Command and Control Activity Detected	192.168.2.23	60028	185.194.205.79	61006	TCP
2025-03-28T04:19:20.437751+0100	2848606	1	Malware Command and Control Activity Detected	192.168.2.23	60028	185.194.205.79	61006	TCP
2025-03-28T04:19:25.552382+0100	2848606	1	Malware Command and Control Activity Detected	192.168.2.23	60028	185.194.205.79	61006	TCP

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Hooking and other Techniques for Hiding and Protection
• Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: sync.superh.elf

ReversingLabs: Detection: 41%

Networking

Suricata IDS alerts for network traffic

Source: Network traffic	Suricata IDS: 2848606 - Severity 1 - ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound) : 192.168.2.23:60028 -> 185.194.205.79:61006
Source: Network traffic	Suricata IDS: 2848607 - Severity 1 - ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Inbound) : 185.194.205.79:61006 -> 192.168.2.23:60028

Source: global traffic

TCP traffic: 192.168.2.23:60028 -> 185.194.205.79:61006

Source: global traffic	TCP traffic: 192.168.2.23:39262 -> 34.249.145.219:443
Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80

Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
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: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 185.194.205.79
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 185.194.205.79
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
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	Network traffic detected: HTTP traffic on port 39262 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: Initial sample	Potential command found: GET / HTTP/1.1
Source: Initial sample	Potential command found: GET /?encoding=json&v=9 HTTP/1.1
Source: Initial sample	Potential command found: GET /attachments/ HTTP/1.1
Source: Initial sample	Potential command found: GET /socket/?v=4 HTTP/1.1
Source: Initial sample	Potential command found: GET /api/v9/gateway/bot HTTP/1.1

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal60.evad.linELF@0/0@0/0

Source: /usr/bin/dash (PID: 6318)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.EwpH9CPFHj /tmp/tmp.gcQD1F7DYS /tmp/tmp.sAhA6tNmot			Jump to behavior
Source: /usr/bin/dash (PID: 6319)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.EwpH9CPFHj /tmp/tmp.gcQD1F7DYS /tmp/tmp.sAhA6tNmot			Jump to behavior

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/sync.superh.elf (PID: 6267)

File: /tmp/sync.superh.elf

Jump to behavior

Source: sync.superh.elf

Submission file: segment LOAD with 7.0344 entropy (max. 8.0)

Source: /tmp/sync.superh.elf (PID: 6271)	Sleeps longer then 60s: 60.0s			Jump to behavior
Source: /tmp/sync.superh.elf (PID: 6271)	Sleeps longer then 60s: 60.0s			Jump to behavior

Source: /tmp/sync.superh.elf (PID: 6267)

Queries kernel information via 'uname':

Jump to behavior

Source: sync.superh.elf, 6267.1.00005631e4fa0000.00005631e5003000.rw-.sdmp	Binary or memory string: 1V5!/etc/qemu-binfmt/sh4
Source: sync.superh.elf, 6267.1.00007ffc77340000.00007ffc77361000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: sync.superh.elf, 6267.1.00005631e4fa0000.00005631e5003000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4
Source: sync.superh.elf, 6267.1.00007ffc77340000.00007ffc77361000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-sh4/tmp/sync.superh.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.superh.elf

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	1 Command and Scripting Interpreter	Path Interception	Path Interception	1 Virtualization/Sandbox Evasion	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	1 Obfuscated Files or Information	LSASS Memory	1 Virtualization/Sandbox Evasion	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)	11 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.superh.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

⊘No contacted domains info

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
34.249.145.219	unknown	United States	16509	AMAZON-02US	false
185.194.205.79	unknown	France	204145	HTSENSEFR	true
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
34.249.145.219	sync.arm5.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	Mozi.m.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	.gksed.arm.elf	Get hash	malicious	Unknown	Browse
	cron.elf	Get hash	malicious	Gafgyt, Mirai	Browse
185.194.205.79	sync.sh4.elf	Get hash	malicious	Unknown	Browse
	sync.x86.elf	Get hash	malicious	Unknown	Browse
	sync.m68k.elf	Get hash	malicious	Unknown	Browse
	sync.arm5.elf	Get hash	malicious	Unknown	Browse
	sync.arm4.elf	Get hash	malicious	Unknown	Browse
	sync.powerpc.elf	Get hash	malicious	Unknown	Browse
	sync.arm7.elf	Get hash	malicious	Unknown	Browse
	sync.sparc.elf	Get hash	malicious	Unknown	Browse
	sync.sh4.elf	Get hash	malicious	Unknown	Browse
	sync.arm5.elf	Get hash	malicious	Unknown	Browse
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43	sync.arm5.elf	Get hash	malicious	Unknown	Browse
	mpsl.elf	Get hash	malicious	Unknown	Browse
	sync.x86.elf	Get hash	malicious	Unknown	Browse
	sync.mipsel.elf	Get hash	malicious	Unknown	Browse
	sync.arm4.elf	Get hash	malicious	Unknown	Browse
	bin.sh.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse
91.189.91.42	sync.arm5.elf	Get hash	malicious	Unknown	Browse
	mpsl.elf	Get hash	malicious	Unknown	Browse
	sync.x86.elf	Get hash	malicious	Unknown	Browse
	sync.mipsel.elf	Get hash	malicious	Unknown	Browse
	sync.arm4.elf	Get hash	malicious	Unknown	Browse
	bin.sh.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Prometei	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	sync.arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.powerpc.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.mipsel.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.arm4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	bin.sh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	185.125.190.26
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
CANONICAL-ASGB	sync.arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.powerpc.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.mipsel.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sync.arm4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	bin.sh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	185.125.190.26
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
HTSENSEFR	sync.sh4.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.x86.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.m68k.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.arm5.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.arm4.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.powerpc.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.arm7.elf	Get hash	malicious	Unknown	Browse	185.194.205.79
	sync.sparc.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
INIT7CH	sync.arm5.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	mpsl.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	sync.x86.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	sync.mipsel.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	sync.arm4.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	bin.sh.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	54.170.242.139
	sync.arm5.elf	Get hash	malicious	Unknown	Browse	34.249.145.219
	sync.mips.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	34.254.182.186
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	54.170.242.139
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219

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):	6.927973442251456
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	sync.superh.elf
File size:	62'916 bytes
MD5:	7d76cb7eac1241415106aaf7c078e07a
SHA1:	5bc63c5149fa219e24a64872d25e241b0b2eb4b4
SHA256:	fa1cee13ec92b30b427097d26f843403e2acb355def3d034df662bf4d208ba01
SHA512:	b1f415a435f9a896661af531c9e3e46429667ce163dfa45033f6fde0cba870a453a2a3124c62634ec0b712a486bebcb766492e265ee430238152ae43b749b14a
SSDEEP:	1536:SCHJAXmX/9klbNg/pkmXS7mBXnECxaZ7qK8kv3vpfjCXIF5I:fCXmX/9klZg/pkmXSuEkaZ7t8kpfjf5I
TLSH:	F8537CA3DC162E48C455D4B174709F7EEB63A844859B2FEA6663833AD087DCCB14A3F4
File Content Preview:	.ELF.....................@.4...4.......4. ...(...............@...@.0...0.....................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:	62516
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	0xcb20	0x0	0x6	AX	32
.fini	PROGBITS	0x40cc00	0xcc00	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x40cc24	0xcc24	0x200c	0x0	0x2	A	4
.ctors	PROGBITS	0x41f000	0xf000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x41f008	0xf008	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x41f014	0xf014	0x3e0	0x0	0x3	WA	4
.bss	NOBITS	0x41f3f4	0xf3f4	0xa314	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xf3f4	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	0xec30	0xec30	7.0344	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xf000	0x41f000	0x41f000	0x3f4	0xa708	3.5819	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
2025-03-28T04:18:18.380106+0100	2848606	ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound)	1	192.168.2.23	60028	185.194.205.79	61006	TCP
2025-03-28T04:18:49.409447+0100	2848606	ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound)	1	192.168.2.23	60028	185.194.205.79	61006	TCP
2025-03-28T04:19:20.437751+0100	2848606	ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound)	1	192.168.2.23	60028	185.194.205.79	61006	TCP
2025-03-28T04:19:25.551502+0100	2848607	ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Inbound)	1	185.194.205.79	61006	192.168.2.23	60028	TCP
2025-03-28T04:19:25.552382+0100	2848606	ETPRO MALWARE ELF/DarkNexus CnC Beacon Keep-Alive (Outbound)	1	192.168.2.23	60028	185.194.205.79	61006	TCP

Network Port Distribution

Total Packets: 20
• 61006 undefined
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 28, 2025 04:17:45.883177042 CET	39262	443	192.168.2.23	34.249.145.219
Mar 28, 2025 04:17:46.892661095 CET	39262	443	192.168.2.23	34.249.145.219
Mar 28, 2025 04:17:47.152017117 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:17:47.350490093 CET	61006	60028	185.194.205.79	192.168.2.23
Mar 28, 2025 04:17:47.350655079 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:17:47.350871086 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:17:47.468658924 CET	43928	443	192.168.2.23	91.189.91.42
Mar 28, 2025 04:17:47.548971891 CET	61006	60028	185.194.205.79	192.168.2.23
Mar 28, 2025 04:17:48.908490896 CET	39262	443	192.168.2.23	34.249.145.219
Mar 28, 2025 04:17:53.099865913 CET	39262	443	192.168.2.23	34.249.145.219
Mar 28, 2025 04:17:53.099865913 CET	42836	443	192.168.2.23	91.189.91.43
Mar 28, 2025 04:18:01.290761948 CET	39262	443	192.168.2.23	34.249.145.219
Mar 28, 2025 04:18:08.969655991 CET	43928	443	192.168.2.23	91.189.91.42
Mar 28, 2025 04:18:11.017545938 CET	42516	80	192.168.2.23	109.202.202.202
Mar 28, 2025 04:18:17.416518927 CET	39262	443	192.168.2.23	34.249.145.219
Mar 28, 2025 04:18:18.380105972 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:18:18.578237057 CET	61006	60028	185.194.205.79	192.168.2.23
Mar 28, 2025 04:18:19.208323956 CET	42836	443	192.168.2.23	91.189.91.43
Mar 28, 2025 04:18:49.409446955 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:18:49.609433889 CET	61006	60028	185.194.205.79	192.168.2.23
Mar 28, 2025 04:18:49.923824072 CET	43928	443	192.168.2.23	91.189.91.42
Mar 28, 2025 04:19:20.437751055 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:19:20.636039972 CET	61006	60028	185.194.205.79	192.168.2.23
Mar 28, 2025 04:19:25.551501989 CET	61006	60028	185.194.205.79	192.168.2.23
Mar 28, 2025 04:19:25.551709890 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:19:25.552381992 CET	60028	61006	192.168.2.23	185.194.205.79
Mar 28, 2025 04:19:25.751450062 CET	61006	60028	185.194.205.79	192.168.2.23

System Behavior

Analysis Process: sync.superh.elf PID: 6267, Parent PID: 6191

General

Start time (UTC):	03:17:46
Start date (UTC):	28/03/2025
Path:	/tmp/sync.superh.elf
Arguments:	/tmp/sync.superh.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.superh.elf PID: 6269, Parent PID: 6267

General

Start time (UTC):	03:17:46
Start date (UTC):	28/03/2025
Path:	/tmp/sync.superh.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Process Activities

Process Forked

Thread Sleep

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: sync.superh.elf PID: 6271, Parent PID: 6269

General

Start time (UTC):	03:17:46
Start date (UTC):	28/03/2025
Path:	/tmp/sync.superh.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Process Activities

Thread Sleep

Chronological Activities

Analysis Process: dash PID: 6318, Parent PID: 4331

General

Start time (UTC):	03:18:44
Start date (UTC):	28/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6318, Parent PID: 4331

General

Start time (UTC):	03:18:44
Start date (UTC):	28/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.EwpH9CPFHj /tmp/tmp.gcQD1F7DYS /tmp/tmp.sAhA6tNmot
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6319, Parent PID: 4331

General

Start time (UTC):	03:18:44
Start date (UTC):	28/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6319, Parent PID: 4331

General

Start time (UTC):	03:18:44
Start date (UTC):	28/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.EwpH9CPFHj /tmp/tmp.gcQD1F7DYS /tmp/tmp.sAhA6tNmot
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

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

Description:	Adversaries may 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 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 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.superh.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

Hooking and other Techniques for Hiding and Protection

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

Suricata IDS Alerts

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: sync.superh.elf PID: 6267, Parent PID: 6191

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.superh.elf PID: 6269, Parent PID: 6267

General

Process Activities

Process Forked

Thread Sleep

Network Activities

Socket Connecting

Linux Analysis Report
sync.superh.elf