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Linux Analysis Report
Rubify.arm.elf

Overview

General Information

Sample name:	Rubify.arm.elf
Analysis ID:	1430811
MD5:	1b189f21c4dd58c832d08c70047a9023
SHA1:	4595ab350cdf9e98195728ac0419a6865efd1eef
SHA256:	032a7c24667344b89e73ac9ee57d6ac06d6eaaea3263beefc6f62cbe1941ecbe
Tags:	elf
Infos:

Detection

Mirai

Score:	76
Range:	0 - 100
Whitelisted:	false

Signatures

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Mirai

Sample is packed with UPX

ELF contains segments with high entropy indicating compressed/encrypted content

Sample contains only a LOAD segment without any section mappings

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)

Yara signature match

Classification

Analysis Advice

Static ELF header machine description suggests that the sample might not execute correctly on this machine.

Exit code information suggests that the sample terminated abnormally, try to lookup the sample's target architecture.

All HTTP servers contacted by the sample do not answer. The sample is likely an old dropper which does no longer work.

Non-zero exit code suggests an error during the execution. Lookup the error code for hints.

Static ELF header machine description suggests that the sample might only run correctly on MIPS or ARM architectures.

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1430811
Start date and time:	2024-04-24 08:21:10 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 42s
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:	Rubify.arm.elf
Detection:	MAL
Classification:	mal76.troj.evad.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/Rubify.arm.elf
PID:	6224
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

Rubify.arm.elf (PID: 6224, Parent: 6136, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/Rubify.arm.elf

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Mirai	Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.	No Attribution	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Memory Dumps

Source	Rule	Description	Author	Strings
6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	JoeSecurity_Mirai_5	Yara detected Mirai	Joe Security
6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x146b8:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64
6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	MAL_ELF_LNX_Mirai_Oct10_2	Detects ELF malware Mirai related	Florian Roth	0x143e4:$c01: 50 4F 53 54 20 2F 63 64 6E 2D 63 67 69 2F 00 00 20 48 54 54 50 2F 31 2E 31 0D 0A 55 73 65 72 2D 41 67 65 6E 74 3A 20 00 0D 0A 48 6F 73 74 3A
Process Memory Space: Rubify.arm.elf PID: 6224	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x11ca3:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64

Snort Signatures

⊘No Snort 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: Rubify.arm.elf	Virustotal: Detection: 25%			Perma Link
Source: Rubify.arm.elf	ReversingLabs: Detection: 36%

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: 109.202.202.202
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: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42

Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://94.156.71.75/bin
Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://94.156.71.75/bins/Rubify.mips;
Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://94.156.71.75/bins/Rubify.x86
Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://94.156.71.75/wget.sh;
Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding//%22%3E
Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/
Source: Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope//
Source: Rubify.arm.elf	String found in binary or memory: http://upx.sf.net

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

System Summary

Malicious sample detected (through community Yara rule)

Source: 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp, type: MEMORY	Matched rule: Detects ELF malware Mirai related Author: Florian Roth
Source: Process Memory Space: Rubify.arm.elf PID: 6224, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown

Source: LOAD without section mappings

Program segment: 0x8000

Source: 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp, type: MEMORY	Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
Source: Process Memory Space: Rubify.arm.elf PID: 6224, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16

Source: classification engine

Classification label: mal76.troj.evad.linELF@0/0@0/0

Data Obfuscation

Sample is packed with UPX

Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Id: UPX 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $

Source: Rubify.arm.elf

Submission file: segment LOAD with 7.9605 entropy (max. 8.0)

Source: /tmp/Rubify.arm.elf (PID: 6224)

Queries kernel information via 'uname':

Jump to behavior

Source: Rubify.arm.elf, 6224.1.00007ffdbf5bd000.00007ffdbf5de000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/Rubify.arm.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/Rubify.arm.elf
Source: Rubify.arm.elf, 6224.1.000055aaacac8000.000055aaacc16000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: Rubify.arm.elf, 6224.1.000055aaacac8000.000055aaacc16000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: Rubify.arm.elf, 6224.1.00007ffdbf5bd000.00007ffdbf5de000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: Rubify.arm.elf, 6224.1.00007ffdbf5bd000.00007ffdbf5de000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match

File source: 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match

File source: 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp, type: MEMORY

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	11 Obfuscated Files or Information	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

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
Rubify.arm.elf	25%	Virustotal		Browse
Rubify.arm.elf	37%	ReversingLabs	Linux.Trojan.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Reputation
http://schemas.xmlsoap.org/soap/encoding//%22%3E	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	false	high
http://upx.sf.net	Rubify.arm.elf	false	high
http://94.156.71.75/bin	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	false	unknown
http://94.156.71.75/wget.sh;	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	false	unknown
http://schemas.xmlsoap.org/soap/encoding/	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	false	high
http://schemas.xmlsoap.org/soap/envelope//	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	false	high
http://94.156.71.75/bins/Rubify.mips;	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	false	unknown
http://94.156.71.75/bins/Rubify.x86	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	false	unknown
http://schemas.xmlsoap.org/soap/envelope/	Rubify.arm.elf, 6224.1.00007f8a5c017000.00007f8a5c02d000.r-x.sdmp	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	ASN	ASN Name	Malicious
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
109.202.202.202	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse
	SecuriteInfo.com.Linux.Siggen.9999.3492.13032.elf	Get hash	malicious	Unknown	Browse
91.189.91.43	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse
	SecuriteInfo.com.Linux.Siggen.9999.3492.13032.elf	Get hash	malicious	Unknown	Browse
91.189.91.42	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse
	SecuriteInfo.com.Linux.Siggen.9999.3492.13032.elf	Get hash	malicious	Unknown	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	az9a0rNKvy.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	az9a0rNKvy.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
INIT7CH	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	SecuriteInfo.com.Linux.Siggen.9999.3492.13032.elf	Get hash	malicious	Unknown	Browse	109.202.202.202

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, ARM, version 1 (ARM), statically linked, no section header
Entropy (8bit):	7.958140937822672
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	Rubify.arm.elf
File size:	34'568 bytes
MD5:	1b189f21c4dd58c832d08c70047a9023
SHA1:	4595ab350cdf9e98195728ac0419a6865efd1eef
SHA256:	032a7c24667344b89e73ac9ee57d6ac06d6eaaea3263beefc6f62cbe1941ecbe
SHA512:	1cc0c185b8306e749f22aa2d2ca7e5f0b20102a92c3b701f2eed74aa24dd96de30a2f64863ca1410c0f3cc8c7a1f651ac4464da5a1e2a77da22e9fe290bee1d0
SSDEEP:	768:NesUqczLWycaRXlpWpibQze3AVHyAghgdS8Vc/i4W+s3Uozp:yeL1ibF3Ahg6dS8VmYzp
TLSH:	C6F2E1630B9B56E45E71E83FDA140EC36275C7B8E5D5F32303588684DEB9205A03C3A7
File Content Preview:	.ELF...a..........(.....`...4...........4. ...(.....................................................................Q.td............................t.6.UPX!........\|d..\|d......V..........?.E.h;.}...^..........fT...R..A...u....S...:.7#.......tR.s.&..S.rSp.

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0xf460
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	0
Section Header Size:	40
Number of Section Headers:	0
Header String Table Index:	0

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align
LOAD	0x0	0x8000	0x8000	0x860f	0x860f	7.9605	0x5	R E	0x8000
LOAD	0xaa8	0x30aa8	0x30aa8	0x0	0x0	0.0000	0x6	RW	0x8000
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
Apr 24, 2024 08:21:50.657708883 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 24, 2024 08:21:56.032991886 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 24, 2024 08:21:56.800787926 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 24, 2024 08:22:11.134942055 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 24, 2024 08:22:23.421160936 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 24, 2024 08:22:27.516536951 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 24, 2024 08:22:52.089238882 CEST	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: Rubify.arm.elf PID: 6224, Parent PID: 6136

General

Start time (UTC):	06:21:49
Start date (UTC):	24/04/2024
Path:	/tmp/Rubify.arm.elf
Arguments:	/tmp/Rubify.arm.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 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 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

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Linux Analysis Report Rubify.arm.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Memory Dumps

Snort Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Data Obfuscation

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

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

URLs from Memory and Binaries

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

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: Rubify.arm.elf PID: 6224, Parent PID: 6136

General

Chronological Activities

Linux Analysis Report
Rubify.arm.elf