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Linux Analysis Report
yakov.arm6.elf

Overview

General Information

Sample name:	yakov.arm6.elf
Analysis ID:	1524330
MD5:	118c887a30c86a773147f770c61cbc88
SHA1:	ee9f36f8768180d410ce3e9d87b2cabb6a7fec1e
SHA256:	c191224038891dedcfbccf0bcbdca359e9515b5263e3212310e8caa55d175d64
Tags:	botnetelfMiraiyakovYakuzauser-NDA0E
Infos:

Detection

Mirai

Score:	68
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

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

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

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1524330
Start date and time:	2024-10-02 18:33:50 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 30s
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:	yakov.arm6.elf
Detection:	MAL
Classification:	mal68.troj.evad.linELF@0/0@0/0

Warnings

VT rate limit hit for: yakov.arm6.elf

Runtime Messages

Command:	/tmp/yakov.arm6.elf
PID:	6248
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

dash New Fork (PID: 6220, Parent: 4331)

rm (PID: 6220, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.KxtweXCMWg /tmp/tmp.d9QQVA41GB /tmp/tmp.VqbIKFB5K7

dash New Fork (PID: 6221, Parent: 4331)

rm (PID: 6221, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.KxtweXCMWg /tmp/tmp.d9QQVA41GB /tmp/tmp.VqbIKFB5K7

yakov.arm6.elf (PID: 6248, Parent: 6153, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/yakov.arm6.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
6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0xf140:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf154:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf168:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf17c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf190:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf1a4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf1b8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf1cc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf1e0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf1f4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf208:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf21c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf230:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf244:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf258:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf26c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf280:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf294:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf2a8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf2bc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xf2d0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0xf698:$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
Process Memory Space: yakov.arm6.elf PID: 6248	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
Process Memory Space: yakov.arm6.elf PID: 6248	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0xea4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xea60:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xea74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xea88:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xea9c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeab0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeac4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xead8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeaec:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb00:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb14:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb28:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb3c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb50:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb64:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb78:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeb8c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xeba0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xebb4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xebc8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xebdc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: yakov.arm6.elf PID: 6248	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0xef0a:$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
Click to see the 1 entries

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: yakov.arm6.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: yakov.arm6.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: 6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: yakov.arm6.elf PID: 6248, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: yakov.arm6.elf PID: 6248, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown

Source: LOAD without section mappings

Program segment: 0x8000

Source: 6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 6248.1.00007fe5c4017000.00007fe5c4028000.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: Process Memory Space: yakov.arm6.elf PID: 6248, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: yakov.arm6.elf PID: 6248, 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: mal68.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: /usr/bin/dash (PID: 6220)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.KxtweXCMWg /tmp/tmp.d9QQVA41GB /tmp/tmp.VqbIKFB5K7			Jump to behavior
Source: /usr/bin/dash (PID: 6221)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.KxtweXCMWg /tmp/tmp.d9QQVA41GB /tmp/tmp.VqbIKFB5K7			Jump to behavior

Source: yakov.arm6.elf

Submission file: segment LOAD with 7.9506 entropy (max. 8.0)

Source: /tmp/yakov.arm6.elf (PID: 6248)

Queries kernel information via 'uname':

Jump to behavior

Source: yakov.arm6.elf, 6248.1.000055b4fb16a000.000055b4fb2f8000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: yakov.arm6.elf, 6248.1.00007ffd17c6c000.00007ffd17c8d000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/yakov.arm6.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/yakov.arm6.elf
Source: yakov.arm6.elf, 6248.1.000055b4fb16a000.000055b4fb2f8000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: yakov.arm6.elf, 6248.1.00007ffd17c6c000.00007ffd17c8d000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: yakov.arm6.elf, 6248.1.00007ffd17c6c000.00007ffd17c8d000.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: 6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: yakov.arm6.elf PID: 6248, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: 6248.1.00007fe5c4017000.00007fe5c4028000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: yakov.arm6.elf PID: 6248, type: MEMORYSTR

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	1 File Deletion	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
yakov.arm6.elf	37%	ReversingLabs	Linux.Trojan.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://upx.sf.net	0%	URL Reputation	safe

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://upx.sf.net	yakov.arm6.elf	true	URL Reputation: safe	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
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
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	novo.arm5.elf	Get hash	malicious	Moobot	Browse
	mips.elf	Get hash	malicious	Mirai, Moobot	Browse
	y	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.18122.21320.elf	Get hash	malicious	Unknown	Browse
	x86_32.nn.elf	Get hash	malicious	Okiru	Browse
	x86_64.nn.elf	Get hash	malicious	Okiru	Browse
	arm.nn.elf	Get hash	malicious	Okiru	Browse
	arm6.nn.elf	Get hash	malicious	Okiru	Browse
	hidakibest.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	hidakibest.arm4.elf	Get hash	malicious	Gafgyt, Mirai	Browse
91.189.91.42	novo.arm5.elf	Get hash	malicious	Moobot	Browse
	mips.elf	Get hash	malicious	Mirai, Moobot	Browse
	y	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.18122.21320.elf	Get hash	malicious	Unknown	Browse
	x86_32.nn.elf	Get hash	malicious	Okiru	Browse
	x86_64.nn.elf	Get hash	malicious	Okiru	Browse
	arm.nn.elf	Get hash	malicious	Okiru	Browse
	arm6.nn.elf	Get hash	malicious	Okiru	Browse
	hidakibest.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	hidakibest.arm4.elf	Get hash	malicious	Gafgyt, Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	novo.arm5.elf	Get hash	malicious	Moobot	Browse	91.189.91.42
	mips.elf	Get hash	malicious	Mirai, Moobot	Browse	91.189.91.42
	y	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.9999.18122.21320.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	x86_32.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	x86_64.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	arm.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	arm6.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	hidakibest.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	hidakibest.arm4.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
CANONICAL-ASGB	novo.arm5.elf	Get hash	malicious	Moobot	Browse	91.189.91.42
	mips.elf	Get hash	malicious	Mirai, Moobot	Browse	91.189.91.42
	y	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.9999.18122.21320.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	x86_32.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	x86_64.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	arm.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	arm6.nn.elf	Get hash	malicious	Okiru	Browse	91.189.91.42
	hidakibest.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	hidakibest.arm4.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
INIT7CH	novo.arm5.elf	Get hash	malicious	Moobot	Browse	109.202.202.202
	mips.elf	Get hash	malicious	Mirai, Moobot	Browse	109.202.202.202
	y	Get hash	malicious	Unknown	Browse	109.202.202.202
	SecuriteInfo.com.Linux.Siggen.9999.18122.21320.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	x86_32.nn.elf	Get hash	malicious	Okiru	Browse	109.202.202.202
	x86_64.nn.elf	Get hash	malicious	Okiru	Browse	109.202.202.202
	arm.nn.elf	Get hash	malicious	Okiru	Browse	109.202.202.202
	arm6.nn.elf	Get hash	malicious	Okiru	Browse	109.202.202.202
	hidakibest.mpsl.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	hidakibest.arm4.elf	Get hash	malicious	Gafgyt, Mirai	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, EABI4 version 1 (GNU/Linux), statically linked, no section header
Entropy (8bit):	7.947239595918237
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	yakov.arm6.elf
File size:	29'944 bytes
MD5:	118c887a30c86a773147f770c61cbc88
SHA1:	ee9f36f8768180d410ce3e9d87b2cabb6a7fec1e
SHA256:	c191224038891dedcfbccf0bcbdca359e9515b5263e3212310e8caa55d175d64
SHA512:	88d2939e10083c09715a54b7602f3388425db18e77114575de0ad5862d1cfb58216abd2f1914d2de4d84bdf8c9617fe40c9939449cdc7bc008e28f95f68da43a
SSDEEP:	768:wEPUpSfSE9AZRpE95ITcwPA7o7jI8TSAcEvDK9q3UELdP2A:wTp0SE9A7pE95/oMo70CSODLZ2A
TLSH:	63D2F15163D0BA33EB3088F0DD6C694147AE9AE6C6933D331A565C58FED9402B2F8682
File Content Preview:	.ELF..............(.........4...........4. ...(......................s...s...............-..........................Q.td............................>. NUPX!........T...T.......S..........?.E.h;....#..$..1)....g....z.ke....fpa.<&.L...W....I..Q.U.X@..Rs....

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:	UNIX - Linux
ABI Version:	0
Entry Point Address:	0xe1e8
Flags:	0x4000002
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	0x73d5	0x73d5	7.9506	0x5	R E	0x8000
LOAD	0x2d10	0x2ad10	0x2ad10	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
Oct 2, 2024 18:34:37.848124981 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 2, 2024 18:34:43.223212957 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 2, 2024 18:34:44.759098053 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 2, 2024 18:34:58.069396973 CEST	43928	443	192.168.2.23	91.189.91.42
Oct 2, 2024 18:35:10.355480909 CEST	42836	443	192.168.2.23	91.189.91.43
Oct 2, 2024 18:35:14.451410055 CEST	42516	80	192.168.2.23	109.202.202.202
Oct 2, 2024 18:35:39.023641109 CEST	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: dash PID: 6220, Parent PID: 4331

General

Start time (UTC):	16:34:33
Start date (UTC):	02/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6220, Parent PID: 4331

General

Start time (UTC):	16:34:33
Start date (UTC):	02/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.KxtweXCMWg /tmp/tmp.d9QQVA41GB /tmp/tmp.VqbIKFB5K7
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 6221, Parent PID: 4331

General

Start time (UTC):	16:34:33
Start date (UTC):	02/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6221, Parent PID: 4331

General

Start time (UTC):	16:34:33
Start date (UTC):	02/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.KxtweXCMWg /tmp/tmp.d9QQVA41GB /tmp/tmp.VqbIKFB5K7
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: yakov.arm6.elf PID: 6248, Parent PID: 6153

General

Start time (UTC):	16:34:38
Start date (UTC):	02/10/2024
Path:	/tmp/yakov.arm6.elf
Arguments:	/tmp/yakov.arm6.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 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 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 yakov.arm6.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Data Obfuscation

Persistence and Installation Behavior

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: dash PID: 6220, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6220, Parent PID: 4331

General

Chronological Activities

Analysis Process: dash PID: 6221, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6221, Parent PID: 4331

General

Chronological Activities

Analysis Process: yakov.arm6.elf PID: 6248, Parent PID: 6153

General

Chronological Activities

Linux Analysis Report
yakov.arm6.elf