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Linux Analysis Report
na.elf

Overview

General Information

Sample name:	na.elf
Analysis ID:	1542325
MD5:	49fde861072798623bf35de4794f7d3d
SHA1:	1c9b225d3e34db9c2a0fecb9f2c254da1371f953
SHA256:	8268144d8232fc0dae86c2536eef50916e4ee9a23b15a561aa72971714359383
Tags:	elfuser-abuse_ch
Infos:

Detection

Xmrig

Score:	76
Range:	0 - 100
Whitelisted:	false

Signatures

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected Xmrig cryptocurrency miner

Found strings related to Crypto-Mining

Machine Learning detection for sample

Stdout / stderr contain strings indicative of a mining client

Creates hidden files and/or directories

Reads CPU information from /proc indicative of miner or evasive malware

Reads CPU information from /sys indicative of miner or evasive malware

Reads system information from the proc file system

Sample has stripped symbol table

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:	1542325
Start date and time:	2024-10-25 19:44:37 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 28s
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:	mal76.mine.linELF@0/0@0/0

Warnings

VT rate limit hit for: na.elf

Runtime Messages

Command:	/tmp/na.elf
PID:	5432
Exit Code:	2
Exit Code Info:
Killed:	False
Standard Output:	[2024-10-25 12:45:24.579] unable to open "/tmp/config.json". [2024-10-25 12:45:24.581] unable to open "/root/.xmrig.json". [2024-10-25 12:45:24.583] unable to open "/root/.config/xmrig.json". [2024-10-25 12:45:24.585] no valid configuration found, try https://xmrig.com/wizard
Standard Error:

Process Tree

system is lnxubuntu20

na.elf (PID: 5432, Parent: 5359, MD5: 49fde861072798623bf35de4794f7d3d) Arguments: /tmp/na.elf

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
XMRIG		No Attribution	https://www.aquasec.com/blog/container-security-tnt-container-attack/ https://www.aquasec.com/blog/pg_mem-a-malware-hidden-in-the-postgres-processes/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.xmrig

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
na.elf	JoeSecurity_Xmrig	Yara detected Xmrig cryptocurrency miner	Joe Security
na.elf	Linux_Trojan_Pornoasset_927f314f	unknown	unknown	0x209958:$a: C3 D3 CB D3 C3 48 31 C3 48 0F AF F0 48 0F AF F0 48 0F AF F0 48
na.elf	MacOS_Cryptominer_Xmrig_241780a1	unknown	unknown	0x5ce6c6:$a1: mining.set_target 0x5cd909:$a2: XMRIG_HOSTNAME 0x5e7e70:$a3: Usage: xmrig [OPTIONS] 0x5cd8ea:$a4: XMRIG_VERSION

Memory Dumps

Source	Rule	Description	Author	Strings
5432.1.0000000000401000.00000000009cd000.r-x.sdmp	Linux_Trojan_Pornoasset_927f314f	unknown	unknown	0x208958:$a: C3 D3 CB D3 C3 48 31 C3 48 0F AF F0 48 0F AF F0 48 0F AF F0 48

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: 44%

Machine Learning detection for sample

Source: na.elf

Joe Sandbox ML: detected

Bitcoin Miner

Yara detected Xmrig cryptocurrency miner

Source: Yara match

File source: na.elf, type: SAMPLE

Found strings related to Crypto-Mining

Source: na.elf	String found in binary or memory: stratum+ssl://%s
Source: na.elf	String found in binary or memory: cryptonight/0
Source: na.elf	String found in binary or memory: -o, --url=URL URL of mining server
Source: na.elf	String found in binary or memory: stratum+tcp://
Source: na.elf	String found in binary or memory: Usage: xmrig [OPTIONS]
Source: na.elf	String found in binary or memory: XMRig 6.22.1

Stdout / stderr contain strings indicative of a mining client

Source: /tmp/na.elf

Stdout: xmrig

Source: /tmp/na.elf (PID: 5432)

Reads CPU info from proc file: /proc/cpuinfo

Jump to behavior

Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/online	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/core_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/core_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/die_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/package_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/physical_package_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/core_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/core_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/die_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/package_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/physical_package_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/possible	Jump to behavior

Source: na.elf	String found in binary or memory: https://gcc.gnu.org/bugsrg/bugs/):
Source: na.elf	String found in binary or memory: https://xmrig.com/benchmark/%s
Source: na.elf	String found in binary or memory: https://xmrig.com/docs/algorithms
Source: na.elf	String found in binary or memory: https://xmrig.com/wizard
Source: na.elf	String found in binary or memory: https://xmrig.com/wizard%s

System Summary

Malicious sample detected (through community Yara rule)

Source: na.elf, type: SAMPLE	Matched rule: Linux_Trojan_Pornoasset_927f314f Author: unknown
Source: na.elf, type: SAMPLE	Matched rule: MacOS_Cryptominer_Xmrig_241780a1 Author: unknown
Source: 5432.1.0000000000401000.00000000009cd000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Pornoasset_927f314f Author: unknown

Source: ELF static info symbol of initial sample

.symtab present: no

Source: na.elf, type: SAMPLE	Matched rule: Linux_Trojan_Pornoasset_927f314f reference_sample = d653598df857535c354ba21d96358d4767d6ada137ee32ce5eb4972363b35f93, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Pornoasset, fingerprint = 7214d3132fc606482e3f6236d291082a3abc0359c80255048045dba6e60ec7bf, id = 927f314f-2cbb-4f87-b75c-9aa5ef758599, last_modified = 2021-09-16
Source: na.elf, type: SAMPLE	Matched rule: MacOS_Cryptominer_Xmrig_241780a1 reference_sample = 2e94fa6ac4045292bf04070a372a03df804fa96c3b0cb4ac637eeeb67531a32f, os = macos, severity = x86, creation_date = 2021-09-30, scan_context = file, memory, license = Elastic License v2, threat_name = MacOS.Cryptominer.Xmrig, fingerprint = be9c56f18e0f0bdc8c46544039b9cb0bbba595c1912d089b2bcc7a7768ac04a8, id = 241780a1-ad50-4ded-b85a-26339ae5a632, last_modified = 2021-10-25
Source: 5432.1.0000000000401000.00000000009cd000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Pornoasset_927f314f reference_sample = d653598df857535c354ba21d96358d4767d6ada137ee32ce5eb4972363b35f93, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Pornoasset, fingerprint = 7214d3132fc606482e3f6236d291082a3abc0359c80255048045dba6e60ec7bf, id = 927f314f-2cbb-4f87-b75c-9aa5ef758599, last_modified = 2021-09-16

Source: classification engine

Classification label: mal76.mine.linELF@0/0@0/0

Source: /tmp/na.elf (PID: 5432)

Directory: /root/.xmrig.json

Jump to behavior

Source: /tmp/na.elf (PID: 5432)	Reads from proc file: /proc/cpuinfo			Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads from proc file: /proc/meminfo			Jump to behavior

Source: /tmp/na.elf (PID: 5432)

Reads CPU info from proc file: /proc/cpuinfo

Jump to behavior

Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/online	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/core_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/core_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/die_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/package_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/topology/physical_package_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index0/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index1/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index2/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu0/cache/index3/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/core_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/core_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/die_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/package_cpus	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/topology/physical_package_id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index0/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index1/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index2/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/shared_cpu_map	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/level	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/type	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/id	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/coherency_line_size	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/number_of_sets	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/cpu1/cache/index3/physical_line_partition	Jump to behavior
Source: /tmp/na.elf (PID: 5432)	Reads CPU info from /sys: /sys/devices/system/cpu/possible	Jump to behavior

Source: /tmp/na.elf (PID: 5432)

Queries kernel information via 'uname':

Jump to behavior

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	1 Hidden Files and Directories	OS Credential Dumping	1 Security Software Discovery	Remote Services	Data from Local System	Data Obfuscation	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	3 System Information Discovery	Remote Desktop Protocol	Data from Removable Media	Junk Data	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
na.elf	45%	ReversingLabs	Linux.Trojan.Miner
na.elf	100%	Joe Sandbox ML

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
https://gcc.gnu.org/bugsrg/bugs/):	na.elf	false	unknown
https://xmrig.com/benchmark/%s	na.elf	false	unknown
https://xmrig.com/wizard	na.elf	false	unknown
https://xmrig.com/wizard%s	na.elf	false	unknown
https://xmrig.com/docs/algorithms	na.elf	false	unknown

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=f80ee81d995026207b6f78b859d0e200b9b2ace8, stripped
Entropy (8bit):	6.439181879821453
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 49.77% ELF Executable and Linkable format (generic) (4004/1) 49.46% Lumena CEL bitmap (63/63) 0.78%
File name:	na.elf
File size:	8'297'712 bytes
MD5:	49fde861072798623bf35de4794f7d3d
SHA1:	1c9b225d3e34db9c2a0fecb9f2c254da1371f953
SHA256:	8268144d8232fc0dae86c2536eef50916e4ee9a23b15a561aa72971714359383
SHA512:	14393a6a7f9103340338e74457c6f95eb7180d2a90b87e01945be621a0d0798c05fdfb08ec3dbc2ca61ee2cbb6299b48e8b27c01b00913b5e5e9ed704318ac22
SSDEEP:	98304:ljfOYeGaP4PtGR8PCukwzX0dkcicpuuXmEBuYgPEVSLzHfPuDrYXmGW++RVahv04:6X4Pa8eSLbFm6HqNtly9EGjhy
TLSH:	E3866C47B5E318FDC19AC470472FD6A3BD7078A84221B97B7694AA302F67E205B1DF21
File Content Preview:	.ELF..............>.....s.@.....@.......p.~.........@.8...@.......................@.......@...............................................@.......@.....D.\.....D.\.......................\.....................................................`.w.....`......

Static ELF Info

ELF header
Class:	ELF64
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Advanced Micro Devices X86-64
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x40e073
Flags:	0x0
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	10
Section Header Offset:	8296560
Section Header Size:	64
Number of Section Headers:	18
Header String Table Index:	17

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.note.gnu.property	NOTE	0x400270	0x270	0x30	0x0	0x2	A	8
.note.gnu.build-id	NOTE	0x4002a0	0x2a0	0x24	0x0	0x2	A	4
.init	PROGBITS	0x401000	0x1000	0x3	0x0	0x6	AX	1
.text	PROGBITS	0x401040	0x1040	0x5cba01	0x0	0x6	AX	64
.fini	PROGBITS	0x9cca41	0x5cca41	0x3	0x0	0x6	AX	1
.rodata	PROGBITS	0x9cd000	0x5cd000	0xe09f0	0x0	0x2	A	64
.eh_frame	PROGBITS	0xaad9f0	0x6ad9f0	0xc6308	0x0	0x2	A	8
.gcc_except_table	PROGBITS	0xb73cf8	0x773cf8	0xa8e5	0x0	0x2	A	4
.tbss	NOBITS	0xb7fb60	0x77eb60	0x20	0x0	0x403	WAT	16
.init_array	INIT_ARRAY	0xb7fb60	0x77eb60	0x128	0x8	0x3	WA	8
.fini_array	FINI_ARRAY	0xb7fc88	0x77ec88	0x18	0x8	0x3	WA	8
.data.rel.ro	PROGBITS	0xb7fca0	0x77eca0	0x63130	0x0	0x3	WA	32
.got	PROGBITS	0xbe2dd0	0x7e1dd0	0x218	0x8	0x3	WA	8
.data	PROGBITS	0xbe3000	0x7e2000	0x7790	0x0	0x3	WA	32
.bss	NOBITS	0xbea7c0	0x7e9790	0x998b8	0x0	0x3	WA	64
.comment	PROGBITS	0x0	0x7e9790	0x31	0x1	0x30	MS	1
.shstrtab	STRTAB	0x0	0x7e97c1	0xab	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	0x2c4	0x2c4	2.4508	0x4	R	0x1000	.note.gnu.property .note.gnu.build-id
LOAD	0x1000	0x401000	0x401000	0x5cba44	0x5cba44	6.4118	0x5	R E	0x1000	.init .text .fini
LOAD	0x5cd000	0x9cd000	0x9cd000	0x1b15dd	0x1b15dd	6.4340	0x4	R	0x1000	.rodata .eh_frame .gcc_except_table
LOAD	0x77eb60	0xb7fb60	0xb7fb60	0x6ac30	0x104518	2.4424	0x6	RW	0x1000	.tbss .init_array .fini_array .data.rel.ro .got .data .bss
NOTE	0x270	0x400270	0x400270	0x30	0x30	2.0118	0x4	R	0x8	.note.gnu.property
NOTE	0x2a0	0x4002a0	0x4002a0	0x24	0x24	4.0573	0x4	R	0x4	.note.gnu.build-id
TLS	0x77eb60	0xb7fb60	0xb7fb60	0x0	0x20	0.0000	0x4	R	0x10	.tbss
GNU_PROPERTY	0x270	0x400270	0x400270	0x30	0x30	2.0118	0x4	R	0x8	.note.gnu.property
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x10
GNU_RELRO	0x77eb60	0xb7fb60	0xb7fb60	0x634a0	0x634a0	2.3730	0x4	R	0x1	.tbss .init_array .fini_array .data.rel.ro .got

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: na.elf PID: 5432, Parent PID: 5359

General

Start time (UTC):	17:45:24
Start date (UTC):	25/10/2024
Path:	/tmp/na.elf
Arguments:	/tmp/na.elf
File size:	8297712 bytes
MD5 hash:	49fde861072798623bf35de4794f7d3d

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 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:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information 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, Process: OS API Execution, Process: Process Creation
Platforms:	IaaS, Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report na.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Bitcoin Miner

Networking

System Summary

Persistence and Installation Behavior

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

URLs from Memory and Binaries

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

System Behavior

Analysis Process: na.elf PID: 5432, Parent PID: 5359

General

Chronological Activities

Linux Analysis Report
na.elf