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Linux Analysis Report
wnbw86.elf

Overview

General Information

Sample name:	wnbw86.elf
Analysis ID:	1561855
MD5:	740476040893462e72bdca97d7186c41
SHA1:	298f1e54b05f79dc35a4d842479efb292628d77e
SHA256:	c7d9524f6a75fbbab7b39e410fc86dcfa3e144123c05d47273f5b02cf7fe9c32
Tags:	elfuser-abuse_ch
Infos:
Errors No process behavior to analyse as no analysis process or sample was found

Detection

Score:	52
Range:	0 - 100
Whitelisted:	false

Signatures

Malicious sample detected (through community Yara rule)

Machine Learning detection for sample

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

Yara signature match

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1561855
Start date and time:	2024-11-24 14:17:04 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 26s
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:	wnbw86.elf
Detection:	MAL
Classification:	mal52.linELF@0/0@0/0

Errors

No process behavior to analyse as no analysis process or sample was found

Warnings

VT rate limit hit for: wnbw86.elf

Runtime Messages

Command:	/tmp/wnbw86.elf
PID:	6239
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
wnbw86.elf	Linux_Trojan_Mirai_b14f4c5d	unknown	unknown	0x6650:$a: 53 31 DB 8B 4C 24 0C 8B 54 24 08 83 F9 01 76 15 66 8B 02 83 E9 02 25 FF FF 00 00 83 C2 02 01 C3 83 F9 01 77 EB 49 75 05 0F BE 02 01 C3
wnbw86.elf	Linux_Trojan_Mirai_88de437f	unknown	unknown	0x9402:$a: 24 08 8B 4C 24 04 85 D2 74 0D 31 C0 89 F6 C6 04 08 00 40 39 D0
wnbw86.elf	Linux_Trojan_Mirai_ae9d0fa6	unknown	unknown	0x192:$a: 83 EC 04 8A 44 24 18 8B 5C 24 14 88 44 24 03 8A 44 24 10 25 FF 00
wnbw86.elf	Linux_Trojan_Mirai_8aa7b5d3	unknown	unknown	0x93d2:$a: 8B 4C 24 14 8B 74 24 0C 8B 5C 24 10 85 C9 74 0D 31 D2 8A 04 1A 88

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Machine Learning detection for sample

Source: wnbw86.elf

Joe Sandbox ML: detected

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: 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: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_b14f4c5d Author: unknown
Source: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_ae9d0fa6 Author: unknown
Source: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 Author: unknown

Source: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_b14f4c5d os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = a70d052918dd2fbc66db241da6438015130f0fb6929229bfe573546fe98da817, id = b14f4c5d-054f-46e6-9fa8-3588f1ef68b7, last_modified = 2021-09-16
Source: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_ae9d0fa6 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = ca2bf2771844bec95563800d19a35dd230413f8eff0bd44c8ab0b4c596f81bfc, id = ae9d0fa6-be06-4656-9b13-8edfc0ee9e71, last_modified = 2021-09-16
Source: wnbw86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26

Source: classification engine

Classification label: mal52.linELF@0/0@0/0

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	Direct Volume Access	OS Credential Dumping	System Service 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
wnbw86.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

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	vwkjebwi686.elf	Get hash	malicious	Unknown	Browse
	arm.b.elf	Get hash	malicious	Unknown	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	la.bot.arm.elf	Get hash	malicious	Unknown	Browse
	la.bot.sparc.elf	Get hash	malicious	Unknown	Browse
	la.bot.arm5.elf	Get hash	malicious	Unknown	Browse
	la.bot.arc.elf	Get hash	malicious	Mirai	Browse
	la.bot.arm6.elf	Get hash	malicious	Unknown	Browse
	la.bot.mipsel.elf	Get hash	malicious	Unknown	Browse
	la.bot.mips.elf	Get hash	malicious	Unknown	Browse
91.189.91.42	vwkjebwi686.elf	Get hash	malicious	Unknown	Browse
	arm.b.elf	Get hash	malicious	Unknown	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	la.bot.arm.elf	Get hash	malicious	Unknown	Browse
	la.bot.sparc.elf	Get hash	malicious	Unknown	Browse
	la.bot.arm5.elf	Get hash	malicious	Unknown	Browse
	la.bot.arc.elf	Get hash	malicious	Mirai	Browse
	la.bot.arm6.elf	Get hash	malicious	Unknown	Browse
	la.bot.mipsel.elf	Get hash	malicious	Unknown	Browse
	la.bot.mips.elf	Get hash	malicious	Unknown	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	vwkjebwi686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	arm.b.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.arm.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.sparc.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.arc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	la.bot.arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.mipsel.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
CANONICAL-ASGB	vwkjebwi686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	arm.b.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.arm.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.sparc.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.arc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	la.bot.arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.mipsel.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	la.bot.mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
INIT7CH	vwkjebwi686.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	arm.b.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	.i.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	la.bot.arm.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	la.bot.sparc.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	la.bot.arm5.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	la.bot.arc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	la.bot.arm6.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	la.bot.mipsel.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	la.bot.mips.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, Intel 80386, version 1 (SYSV), statically linked, missing section headers at 116548
Entropy (8bit):	6.343335531800808
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	wnbw86.elf
File size:	41'523 bytes
MD5:	740476040893462e72bdca97d7186c41
SHA1:	298f1e54b05f79dc35a4d842479efb292628d77e
SHA256:	c7d9524f6a75fbbab7b39e410fc86dcfa3e144123c05d47273f5b02cf7fe9c32
SHA512:	b6a2186c289fc5a42ec3c04d00e6dc0baa65e648ce54c3c399d4bab23677be322bf76519bc91757e4dac894f3d067785d6ff4825f9cf6291306bd8f10f5481a5
SSDEEP:	768:EBLBx/Rj7WF3aaeuwB229OIhKmJIH4rpZa68bcp5QQ+oYn2sg:oLBx/Rj7W5aaeux29pImIH4pticE723
TLSH:	801329C0A253D9F5D82A02B42063F7379D7AF53A513CEA83EBD5EE33A891741D90625C
File Content Preview:	.ELF....................d...4...........4. ...(......................~...~...............~...........G..............Q.td............................U..S............h.....P..[]...$.............U......=.U...t..5....D......D.......u........t....h............

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Nov 24, 2024 14:17:50.051889896 CET	43928	443	192.168.2.23	91.189.91.42
Nov 24, 2024 14:17:55.427227974 CET	42836	443	192.168.2.23	91.189.91.43
Nov 24, 2024 14:17:56.707061052 CET	42516	80	192.168.2.23	109.202.202.202
Nov 24, 2024 14:18:11.808876991 CET	43928	443	192.168.2.23	91.189.91.42
Nov 24, 2024 14:18:22.047363997 CET	42836	443	192.168.2.23	91.189.91.43
Nov 24, 2024 14:18:26.142923117 CET	42516	80	192.168.2.23	109.202.202.202
Nov 24, 2024 14:18:52.763151884 CET	43928	443	192.168.2.23	91.189.91.42

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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Warning!

Linux Analysis Report wnbw86.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Errors

Warnings

Runtime Messages

Yara Signatures

Initial Sample

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Linux Analysis Report
wnbw86.elf