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Linux Analysis Report
4Z0oHNCiju.elf

Overview

General Information

Sample name:	4Z0oHNCiju.elf renamed because original name is a hash value
Original sample name:	71cfd6340ad25c787a0f9f155afe294c.elf
Analysis ID:	1431632
MD5:	71cfd6340ad25c787a0f9f155afe294c
SHA1:	b20e68f9398f43d6c42e0e3397f1faf8e54a4f23
SHA256:	37d05d2f680b8d7bdecee14d9565657cd72dd2db54d81bb70fe64081d489a130
Tags:	32armelfmirai
Infos:

Detection

Mirai, Okiru

Score:	80
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Mirai

Yara detected Okiru

Found strings indicative of a multi-platform dropper

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample has stripped symbol table

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.

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:	1431632
Start date and time:	2024-04-25 14:51:30 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 47s
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:	4Z0oHNCiju.elf renamed because original name is a hash value
Original Sample Name:	71cfd6340ad25c787a0f9f155afe294c.elf
Detection:	MAL
Classification:	mal80.troj.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/4Z0oHNCiju.elf
PID:	5494
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

4Z0oHNCiju.elf (PID: 5494, Parent: 5409, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/4Z0oHNCiju.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

Initial Sample

Source	Rule	Description	Author	Strings
4Z0oHNCiju.elf	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
4Z0oHNCiju.elf	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
4Z0oHNCiju.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x1bd0c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd20:$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 0x1bd34:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd48:$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 0x1bd5c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd70:$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 0x1bd84:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd98:$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 0x1bdac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bdc0:$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 0x1bdd4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bde8:$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 0x1bdfc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be10:$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 0x1be24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be38:$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 0x1be4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be60:$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 0x1be74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be88:$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 0x1be9c:$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

Memory Dumps

Source	Rule	Description	Author	Strings
5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x1bd0c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd20:$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 0x1bd34:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd48:$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 0x1bd5c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd70:$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 0x1bd84:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bd98:$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 0x1bdac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bdc0:$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 0x1bdd4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1bde8:$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 0x1bdfc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be10:$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 0x1be24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be38:$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 0x1be4c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be60:$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 0x1be74:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1be88:$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 0x1be9c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: 4Z0oHNCiju.elf PID: 5494	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: 4Z0oHNCiju.elf PID: 5494	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
Process Memory Space: 4Z0oHNCiju.elf PID: 5494	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x148f4:$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 0x14908:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1491c:$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 0x14930:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x14944:$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 0x14958:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1496c:$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 0x14980:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x14994:$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 0x149a8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x149bc:$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 0x149d0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x149e4:$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 0x149f8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x14a0c:$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 0x14a20:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x14a34:$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 0x14a48:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x14a5c:$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 0x14a70:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x14a84:$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
Click to see the 1 entries

String: HTTP/1.1 200 OKbot.armbot.arm5bot.arm6bot.arm7bot.mipsbot.mpslbot.x86_64bot.sh4/proc/proc/%d/cmdlinenetstatwgetcurlbusybox/bin/busybox/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ3f

Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1

Source: global traffic

DNS traffic detected: DNS query: daisy.ubuntu.com

System Summary

Malicious sample detected (through community Yara rule)

Source: 4Z0oHNCiju.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: 4Z0oHNCiju.elf PID: 5494, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown

Source: Initial sample	String containing 'busybox' found: busybox
Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: HTTP/1.1 200 OKbot.armbot.arm5bot.arm6bot.arm7bot.mipsbot.mpslbot.x86_64bot.sh4/proc/proc/%d/cmdlinenetstatwgetcurlbusybox/bin/busybox/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ3f

Source: ELF static info symbol of initial sample

.symtab present: no

Source: 4Z0oHNCiju.elf, type: SAMPLE	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: 5494.1.00007f00d4017000.00007f00d4036000.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: Process Memory Space: 4Z0oHNCiju.elf PID: 5494, 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: classification engine

Classification label: mal80.troj.linELF@0/0@2/0

Source: /tmp/4Z0oHNCiju.elf (PID: 5494)

Queries kernel information via 'uname':

Jump to behavior

Source: 4Z0oHNCiju.elf, 5494.1.00007fff002fa000.00007fff0031b000.rw-.sdmp	Binary or memory string: Cx86_64/usr/bin/qemu-arm/tmp/4Z0oHNCiju.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/4Z0oHNCiju.elf
Source: 4Z0oHNCiju.elf, 5494.1.00005641d56cf000.00005641d57fd000.rw-.sdmp	Binary or memory string: AV!/etc/qemu-binfmt/arm
Source: 4Z0oHNCiju.elf, 5494.1.00005641d56cf000.00005641d57fd000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: 4Z0oHNCiju.elf, 5494.1.00007fff002fa000.00007fff0031b000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: 4Z0oHNCiju.elf, 5494.1.00007fff002fa000.00007fff0031b000.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: 4Z0oHNCiju.elf, type: SAMPLE
Source: Yara match	File source: 5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: 4Z0oHNCiju.elf PID: 5494, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: 4Z0oHNCiju.elf, type: SAMPLE
Source: Yara match	File source: 5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: 4Z0oHNCiju.elf PID: 5494, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: 4Z0oHNCiju.elf, type: SAMPLE
Source: Yara match	File source: 5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: 4Z0oHNCiju.elf PID: 5494, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: 4Z0oHNCiju.elf, type: SAMPLE
Source: Yara match	File source: 5494.1.00007f00d4017000.00007f00d4036000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: 4Z0oHNCiju.elf PID: 5494, 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	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	Path Interception	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Application Layer Protocol	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
4Z0oHNCiju.elf	54%	ReversingLabs	Linux.Trojan.Mirai
4Z0oHNCiju.elf	44%	Virustotal		Browse
4Z0oHNCiju.elf	100%	Avira	EXP/ELF.Mirai.Z.A

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	false		high

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	3o6Nvzq78D.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	TbgK9a5wVd.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	SecuriteInfo.com.Linux.Siggen.9999.1779.28822.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	iwDcr6JA7A.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.25
	Ym7yz87EyV.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	ldCdti5sRA.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	vlxx.x86_64.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	vlxx.arm.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.25
	vlxx.mips.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	vlxx.arm6.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.25

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.615161004377634
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	4Z0oHNCiju.elf
File size:	143'260 bytes
MD5:	71cfd6340ad25c787a0f9f155afe294c
SHA1:	b20e68f9398f43d6c42e0e3397f1faf8e54a4f23
SHA256:	37d05d2f680b8d7bdecee14d9565657cd72dd2db54d81bb70fe64081d489a130
SHA512:	ea5211f33f1b9294f795223a7294c37b9407bf0616e063e5e8d7cde3d91099fd7712e3f1961adc6f4b36a2c890cd63bac92e65f430a94e8dc942c0585925751e
SSDEEP:	3072:5UoK7bU2uoGqETXwgSXwkaX3h6jHOC23bZRFC:5UL/RyTXBSXFahNv3bZRY
TLSH:	6CE30A56F8819B12D5C111BAFE1E124E37131B78E2DE7302AD246F747B8A87B0E3B915
File Content Preview:	.ELF..............(.....T...4....-......4. ...(.....................p...p...............t...t...p....H..............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../..-......p.....-.@0....S

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 - System V
ABI Version:	0
Entry Point Address:	0x8154
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	142740
Section Header Size:	40
Number of Section Headers:	13
Header String Table Index:	12

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x10	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x1bb70	0x0	0x6	AX	16
.fini	PROGBITS	0x23c20	0x1bc20	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x23c30	0x1bc30	0x2840	0x0	0x2	A	8
.init_array	INIT_ARRAY	0x2e474	0x1e478	0x8	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x2e47c	0x1e480	0x4	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x2e484	0x1e488	0x78	0x0	0x3	WA	4
.got	PROGBITS	0x2e4fc	0x1e500	0x11c	0x4	0x3	WA	4
.data	PROGBITS	0x2e620	0x1e624	0x46f4	0x0	0x3	WA	32
.bss	NOBITS	0x32d18	0x22d18	0x49dc	0x0	0x3	WA	8
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x22d18	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x22d28	0x6a	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0x1e470	0x1e470	6.0895	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x1e474	0x2e474	0x2e470	0x48a4	0x9280	0.5484	0x6	RW	0x8000	.init_array .fini_array .data.rel.ro .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 25, 2024 14:52:36.372577906 CEST	52633	53	192.168.2.13	1.1.1.1
Apr 25, 2024 14:52:36.372668982 CEST	60538	53	192.168.2.13	1.1.1.1
Apr 25, 2024 14:52:36.482836962 CEST	53	52633	1.1.1.1	192.168.2.13
Apr 25, 2024 14:52:36.483007908 CEST	53	60538	1.1.1.1	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 25, 2024 14:52:36.372577906 CEST	192.168.2.13	1.1.1.1	0x465e	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 25, 2024 14:52:36.372668982 CEST	192.168.2.13	1.1.1.1	0x2fd9	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Apr 25, 2024 14:52:36.482836962 CEST	1.1.1.1	192.168.2.13	0x465e	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
Apr 25, 2024 14:52:36.482836962 CEST	1.1.1.1	192.168.2.13	0x465e	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: 4Z0oHNCiju.elf PID: 5494, Parent PID: 5409

General

Start time (UTC):	12:52:34
Start date (UTC):	25/04/2024
Path:	/tmp/4Z0oHNCiju.elf
Arguments:	/tmp/4Z0oHNCiju.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Source: 4Z0oHNCiju.elf	ReversingLabs: Detection: 54%
Source: 4Z0oHNCiju.elf	Virustotal: Detection: 43%			Perma Link

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 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 use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report 4Z0oHNCiju.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Snort Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

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

World Map of Contacted 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

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: 4Z0oHNCiju.elf PID: 5494, Parent PID: 5409

General

Chronological Activities

Linux Analysis Report
4Z0oHNCiju.elf