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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1530546
MD5:	61aeb14eea0086548eb566cb02038943
SHA1:	1c3b440bbc22b2eb13148a4db2a4df4ff8111a13
SHA256:	f0cc28a1a112d77b10d1a738593a2aab3169c2c01371447e456265e48484d223
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	60
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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

Deletes system log files

Sample tries to access files in /etc/config/ (typical for OpenWRT routers)

Creates hidden files and/or directories

Detected TCP or UDP traffic on non-standard ports

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

Found strings indicative of a multi-platform dropper

Sample has stripped symbol table

Sample listens on a socket

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

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1530546
Start date and time:	2024-10-10 09:48:33 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 23s
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:	na.elf
Detection:	MAL
Classification:	mal60.troj.evad.linELF@0/0@1/0

Runtime Messages

Command:	/tmp/na.elf
PID:	6277
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	thIs wEek on xLaB lEarNs nOthinG xd
Standard Error:

Process Tree

system is lnxubuntu20

dash New Fork (PID: 6247, Parent: 4331)

rm (PID: 6247, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.4jLf3h3Uqq /tmp/tmp.jmvgMJk7cC /tmp/tmp.7rbvlX96eN

dash New Fork (PID: 6248, Parent: 4331)

rm (PID: 6248, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.4jLf3h3Uqq /tmp/tmp.jmvgMJk7cC /tmp/tmp.7rbvlX96eN

na.elf (PID: 6277, Parent: 6180, MD5: 8943e5f8f8c280467b4472c15ae93ba9) Arguments: /tmp/na.elf

na.elf New Fork (PID: 6281, Parent: 6277)

na.elf New Fork (PID: 6283, Parent: 6277)

na.elf New Fork (PID: 6285, Parent: 6277)

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: na.elf

ReversingLabs: Detection: 21%

Source: na.elf	String: ash\|login\|wget\|curl\|tftp\|ntpdate
Source: na.elf	String: l/proc//exe\|ash\|login\|wget\|curl\|tftp\|ntpdate/fdsocket\|proc/usr/bin/usr/sbin/system/mnt/mtd/app/org/z/zbin/home/app/dvr/bin/duksan/userfs/mnt/app/usr/etc/dvr/main/usr/local/var/bin/tmp/sqfs/z/bin/dvr/mnt/mtd/zconf/gm/bin/home/process/var/challenge/usr/lib/lib/systemd//usr/lib/systemd/system/system/bin//mnt//home/helper/home/davinci/usr/libexec//sbin//bin/

Networking

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

Source: global traffic

TCP traffic: 154.90.62.142 ports 0,1,2,4,6,42061

Source: global traffic

TCP traffic: 192.168.2.23:52330 -> 154.90.62.142:42061

Source: /tmp/na.elf (PID: 6277)

Socket: 127.0.0.1:1234

Jump to behavior

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: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
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: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	UDP traffic detected without corresponding DNS query: 116.203.104.203

Source: global traffic

DNS traffic detected: DNS query: 21savage.dyn

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal60.troj.evad.linELF@0/0@1/0

Data Obfuscation

Sample tries to access files in /etc/config/ (typical for OpenWRT routers)

Source: /tmp/na.elf (PID: 6283)

File: /etc/config

Jump to behavior

Source: /tmp/na.elf (PID: 6283)	Directory: /root/.cache	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /root/.ssh	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /root/.config	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /root/.local	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /tmp/.X11-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /tmp/.Test-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /tmp/.font-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /tmp/.ICE-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /tmp/.XIM-unix	Jump to behavior
Source: /tmp/na.elf (PID: 6283)	Directory: /etc/.java	Jump to behavior

Source: /usr/bin/dash (PID: 6247)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.4jLf3h3Uqq /tmp/tmp.jmvgMJk7cC /tmp/tmp.7rbvlX96eN			Jump to behavior
Source: /usr/bin/dash (PID: 6248)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.4jLf3h3Uqq /tmp/tmp.jmvgMJk7cC /tmp/tmp.7rbvlX96eN			Jump to behavior

Hooking and other Techniques for Hiding and Protection

Deletes system log files

Source: /tmp/na.elf (PID: 6283)

Log files deleted: /var/log/kern.log

Jump to behavior

Source: /tmp/na.elf (PID: 6277)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 6277.1.0000557078d26000.0000557078d89000.rw-.sdmp	Binary or memory string: xpU5!/etc/qemu-binfmt/sh4
Source: na.elf, 6277.1.00007ffe04412000.00007ffe04433000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: na.elf, 6277.1.0000557078d26000.0000557078d89000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4
Source: na.elf, 6277.1.00007ffe04412000.00007ffe04433000.rw-.sdmp	Binary or memory string: NLx86_64/usr/bin/qemu-sh4/tmp/na.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/na.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	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	Path Interception	1 Hidden Files and Directories	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 Indicator Removal	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)	1 File Deletion	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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
na.elf	21%	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	Antivirus Detection	Reputation
21savage.dyn	154.90.62.142	true	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
154.90.62.142	21savage.dyn	Seychelles	40065	CNSERVERSUS	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
154.90.62.142	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	NLHiAJgSnj.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.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	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	4F08j2Rmd9.bin	Get hash	malicious	Xmrig	Browse
	SecuriteInfo.com.ELF.Mirai-AJJ.10901.28787.elf	Get hash	malicious	Unknown	Browse
	hhh.elf	Get hash	malicious	Unknown	Browse
	78Zrr9QqXv.elf	Get hash	malicious	Unknown	Browse
91.189.91.42	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	na.elf	Get hash	malicious	Mirai	Browse
	4F08j2Rmd9.bin	Get hash	malicious	Xmrig	Browse
	SecuriteInfo.com.ELF.Mirai-AJJ.10901.28787.elf	Get hash	malicious	Unknown	Browse
	hhh.elf	Get hash	malicious	Unknown	Browse
	78Zrr9QqXv.elf	Get hash	malicious	Unknown	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
21savage.dyn	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	4F08j2Rmd9.bin	Get hash	malicious	Xmrig	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-AJJ.10901.28787.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	hhh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
CANONICAL-ASGB	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	na.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	4F08j2Rmd9.bin	Get hash	malicious	Xmrig	Browse	91.189.91.42
	SecuriteInfo.com.ELF.Mirai-AJJ.10901.28787.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	hhh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
INIT7CH	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	na.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	4F08j2Rmd9.bin	Get hash	malicious	Xmrig	Browse	109.202.202.202
	SecuriteInfo.com.ELF.Mirai-AJJ.10901.28787.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	hhh.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	78Zrr9QqXv.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
CNSERVERSUS	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	na.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	9b7dlGj5Gq.exe	Get hash	malicious	FormBook	Browse	198.16.50.171
	lPX6PixV4t.exe	Get hash	malicious	FormBook	Browse	23.224.37.78
	na.elf	Get hash	malicious	Mirai	Browse	23.224.58.152
	NLHiAJgSnj.elf	Get hash	malicious	Unknown	Browse	154.90.62.142
	fJD7ivEnzm.exe	Get hash	malicious	FormBook	Browse	43.242.202.169
	Z6s208B9QX.exe	Get hash	malicious	FormBook	Browse	23.224.37.76

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):	6.855830045306208
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	na.elf
File size:	46'256 bytes
MD5:	61aeb14eea0086548eb566cb02038943
SHA1:	1c3b440bbc22b2eb13148a4db2a4df4ff8111a13
SHA256:	f0cc28a1a112d77b10d1a738593a2aab3169c2c01371447e456265e48484d223
SHA512:	7097fa2938a5cd83839c5a8aa2af5b2c42119eb281366ff5a6ba810f199a120ab9062ec77ada193bcbb18d8c941d5afe419dc1c08aaeea628aff75066ca445aa
SSDEEP:	768:YwIf/bgQE2V+uwL9fzIa+0KKkF7hoRXzejCp:Y5/bgn2ZwL9LIa+03kF7WRijCp
TLSH:	44235B67CC692ED8D629A574F8249F7E5B03E465C5132EE99463C27A8003EDCF8493F8
File Content Preview:	.ELF.....................@.4... .......4. ...(...............@...@...........................A...A.....HE..........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:	45856
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	0xa1a0	0x0	0x6	AX	32
.fini	PROGBITS	0x40a280	0xa280	0x24	0x0	0x6	AX	4
.rodata	PROGBITS	0x40a2a4	0xa2a4	0xa2c	0x0	0x2	A	4
.ctors	PROGBITS	0x41b000	0xb000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x41b008	0xb008	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x41b014	0xb014	0x2cc	0x0	0x3	WA	4
.bss	NOBITS	0x41b2e0	0xb2e0	0x4268	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xb2e0	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	0xacd0	0xacd0	6.9713	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0xb000	0x41b000	0x41b000	0x2e0	0x4548	3.7932	0x6	RW	0x10000	.ctors .dtors .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 10, 2024 09:49:38.444725990 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 10, 2024 09:49:39.311014891 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:49:39.315905094 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:49:39.315970898 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:49:39.348632097 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:49:39.353450060 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:49:43.819907904 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 10, 2024 09:49:54.358648062 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:49:54.363867998 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:49:59.433728933 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 10, 2024 09:50:05.576957941 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 10, 2024 09:50:09.287971020 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:50:09.288149118 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:50:09.672346115 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 10, 2024 09:50:40.388101101 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 10, 2024 09:50:56.145801067 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:50:56.145912886 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:51:00.869178057 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 10, 2024 09:51:41.167829990 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:51:41.172854900 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:51:47.313225031 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:51:47.313401937 CEST	52330	42061	192.168.2.23	154.90.62.142
Oct 10, 2024 09:52:16.171542883 CEST	42061	52330	154.90.62.142	192.168.2.23
Oct 10, 2024 09:52:16.171613932 CEST	52330	42061	192.168.2.23	154.90.62.142

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Oct 10, 2024 09:49:39.287053108 CEST	33663	53	192.168.2.23	116.203.104.203
Oct 10, 2024 09:49:39.298847914 CEST	53	33663	116.203.104.203	192.168.2.23

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Oct 10, 2024 09:49:39.287053108 CEST	192.168.2.23	116.203.104.203	0x830d	Standard query (0)	21savage.dyn	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 10, 2024 09:49:39.298847914 CEST	116.203.104.203	192.168.2.23	0x830d	No error (0)	21savage.dyn		154.90.62.142	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: dash PID: 6247, Parent PID: 4331

General

Start time (UTC):	07:49:32
Start date (UTC):	10/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6247, Parent PID: 4331

General

Start time (UTC):	07:49:32
Start date (UTC):	10/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.4jLf3h3Uqq /tmp/tmp.jmvgMJk7cC /tmp/tmp.7rbvlX96eN
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 6248, Parent PID: 4331

General

Start time (UTC):	07:49:32
Start date (UTC):	10/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6248, Parent PID: 4331

General

Start time (UTC):	07:49:32
Start date (UTC):	10/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.4jLf3h3Uqq /tmp/tmp.jmvgMJk7cC /tmp/tmp.7rbvlX96eN
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: na.elf PID: 6277, Parent PID: 6180

General

Start time (UTC):	07:49:37
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: na.elf PID: 6281, Parent PID: 6277

General

Start time (UTC):	07:49:38
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: na.elf PID: 6283, Parent PID: 6277

General

Start time (UTC):	07:49:38
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Chronological Activities

Analysis Process: na.elf PID: 6285, Parent PID: 6277

General

Start time (UTC):	07:49:38
Start date (UTC):	10/10/2024
Path:	/tmp/na.elf
Arguments:	-
File size:	4139976 bytes
MD5 hash:	8943e5f8f8c280467b4472c15ae93ba9

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may set files and directories to be hidden to evade detection mechanisms. To prevent normal users from accidentally changing special files on a system, most operating systems have the concept of a ‘hidden’ file. These files don’t show up when a user browses the file system with a GUI or when using normal commands on the command line. Users must explicitly ask to show the hidden files either via a series of Graphical User Interface (GUI) prompts or with command line switches ( `dir /a` for Windows and `ls –a` for Linux and macOS).
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Creation, File: File Metadata, Process: Process Creation
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete or modify artifacts generated within systems to remove evidence of their presence or hinder defenses. Various artifacts may be created by an adversary or something that can be attributed to an adversary’s actions. Typically these artifacts are used as defensive indicators related to monitored events, such as strings from downloaded files, logs that are generated from user actions, and other data analyzed by defenders. Location, format, and type of artifact (such as command or login history) are often specific to each platform.
Tactics:	Defense Evasion
Data Sources:	Application Log: Application Log Content, Command: Command Execution, File: File Deletion, File: File Metadata, File: File Modification, Firewall: Firewall Rule Modification, Network Traffic: Network Traffic Content, Process: OS API Execution, Process: Process Creation, Scheduled Job: Scheduled Job Modification, User Account: User Account Authentication, User Account: User Account Deletion, Windows Registry: Windows Registry Key Deletion, Windows Registry: Windows Registry Key Modification
Platforms:	Containers, Google Workspace, Linux, macOS, Network, Office 365, 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 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 ...

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Linux Analysis Report na.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Data Obfuscation

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

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: dash PID: 6247, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6247, Parent PID: 4331

General

Chronological Activities

Analysis Process: dash PID: 6248, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6248, Parent PID: 4331

General

Chronological Activities

Analysis Process: na.elf PID: 6277, Parent PID: 6180

General

Chronological Activities

Analysis Process: na.elf PID: 6281, Parent PID: 6277

General

Chronological Activities

Analysis Process: na.elf PID: 6283, Parent PID: 6277

General

Chronological Activities

Linux Analysis Report
na.elf