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Linux Analysis Report
KzUyRGzaDZ

Overview

General Information

Sample Name:	KzUyRGzaDZ
Analysis ID:	635053
MD5:	9d8c6e23c4a6d55edf8849401f32ca4c
SHA1:	2995d242ea96d0e0ee2980369e8d687e92e78e0a
SHA256:	13cdc7b6231e4ddb3f3e062def4919fde078d9751b007a1f4e105ed4d0961fe6
Tags:	64elfgafgyt
Infos:

Detection

Mirai

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Yara detected Mirai

Opens /proc/net/* files useful for finding connected devices and routers

Sample is packed with UPX

Sample contains only a LOAD segment without any section mappings

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

Yara signature match

Classification

Analysis Advice

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

General Information

Joe Sandbox Version:	34.0.0 Boulder Opal
Analysis ID:	635053
Start date and time: 27/05/202211:51:08	2022-05-27 11:51:08 +02:00
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 5m 2s
Hypervisor based Inspection enabled:	false
Report type:	light
Sample file name:	KzUyRGzaDZ
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
Detection:	MAL
Classification:	mal56.spre.troj.evad.lin@0/0@0/0

Runtime Messages

Command:	/tmp/KzUyRGzaDZ
PID:	6230
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	echo zP
Standard Error:

Process Tree

system is lnxubuntu20

KzUyRGzaDZ (PID: 6230, Parent: 6131, MD5: 9d8c6e23c4a6d55edf8849401f32ca4c) Arguments: /tmp/KzUyRGzaDZ

KzUyRGzaDZ New Fork (PID: 6231, Parent: 6230)

KzUyRGzaDZ New Fork (PID: 6232, Parent: 6230)

KzUyRGzaDZ New Fork (PID: 6233, Parent: 6232)

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
KzUyRGzaDZ	SUSP_ELF_LNX_UPX_Compressed_File	Detects a suspicious ELF binary with UPX compression	Florian Roth	0x9e30:$s1: PROT_EXEC\|PROT_WRITE failed. 0x9e9f:$s2: $Id: UPX 0x9e50:$s3: $Info: This file is packed with the UPX executable packer

Memory Dumps

Source	Rule	Description	Author
6230.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6232.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6231.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6233.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

Spreading

Opens /proc/net/* files useful for finding connected devices and routers

Source: /tmp/KzUyRGzaDZ (PID: 6230)

Opens: /proc/net/route

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: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443

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

Source: KzUyRGzaDZ

String found in binary or memory: http://upx.sf.net

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	TCP traffic detected without corresponding DNS query: 91.189.91.43

Source: LOAD without section mappings

Program segment: 0x100000

Source: KzUyRGzaDZ, type: SAMPLE

Matched rule: SUSP_ELF_LNX_UPX_Compressed_File date = 2018-12-12, author = Florian Roth, description = Detects a suspicious ELF binary with UPX compression, reference = Internal Research, score = 038ff8b2fef16f8ee9d70e6c219c5f380afe1a21761791e8cbda21fa4d09fdb4

Source: classification engine

Classification label: mal56.spre.troj.evad.lin@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. $

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: 6230.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6232.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6231.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6233.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: 6230.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6232.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6231.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6233.1.00000000a0bbd638.00000000abc4abe9.r-x.sdmp, type: MEMORY

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	1 Obfuscated Files or Information	OS Credential Dumping	1 Remote System Discovery	Remote Services	Data from Local System	Exfiltration Over Other Network Medium	1 Encrypted Channel	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition
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	Exfiltration Over Bluetooth	1 Application Layer Protocol	Exploit SS7 to Redirect Phone Calls/SMS	Remotely Wipe Data Without Authorization	Device Lockout

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

⊘No Antivirus matches

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	Antivirus Detection	Reputation
http://upx.sf.net	KzUyRGzaDZ	false		high

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
172.245.210.119	unknown	United States	36352	AS-COLOCROSSINGUS	false
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

⊘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, stripped
Entropy (8bit):	7.974934192282023
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	KzUyRGzaDZ
File size:	49804
MD5:	9d8c6e23c4a6d55edf8849401f32ca4c
SHA1:	2995d242ea96d0e0ee2980369e8d687e92e78e0a
SHA256:	13cdc7b6231e4ddb3f3e062def4919fde078d9751b007a1f4e105ed4d0961fe6
SHA512:	7101fac0d177effb6c590aa5a508402f812c70bd83d288cd2cb421e8bb28868bb669c5d4abdb0d5ffa0d8f1bfdb9a8376ffd90876d8cccbae7d538ec31300c6f
SSDEEP:	768:8Vlo1OeMMg27EbV3UkkgaI3+V/ATmxUiq7LPE/QfVjx00DCb0ARb:MlZMg27Skz219iqJBfUNRb
TLSH:	5D2302DFDD5274F6D0B0C17302992381B91BF1281B856B738661BADFCDB55420E4D7A2
File Content Preview:	.ELF..............>.............@...................@.8...@...............................................................................R.......R.............................Q.td.....................................................G.lUPX!H..............

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:	0x109398
Flags:	0x0
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	3
Section Header Offset:	0
Section Header Size:	64
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	0x100000	0x100000	0xa4d4	0xa4d4	4.0598	0x5	R E	0x100000
LOAD	0x810	0x520810	0x520810	0x0	0x0	0.0000	0x6	RW	0x1000
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x8

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
May 27, 2022 11:51:57.205537081 CEST	42836	443	192.168.2.23	91.189.91.43
May 27, 2022 11:51:57.717549086 CEST	42516	80	192.168.2.23	109.202.202.202
May 27, 2022 11:51:58.176362991 CEST	40610	17372	192.168.2.23	172.245.210.119
May 27, 2022 11:51:58.319045067 CEST	17372	40610	172.245.210.119	192.168.2.23
May 27, 2022 11:51:58.319221973 CEST	40610	17372	192.168.2.23	172.245.210.119
May 27, 2022 11:51:59.189528942 CEST	40610	17372	192.168.2.23	172.245.210.119
May 27, 2022 11:51:59.332320929 CEST	17372	40610	172.245.210.119	192.168.2.23
May 27, 2022 11:51:59.332492113 CEST	40610	17372	192.168.2.23	172.245.210.119
May 27, 2022 11:51:59.641949892 CEST	40610	17372	192.168.2.23	172.245.210.119
May 27, 2022 11:51:59.784640074 CEST	17372	40610	172.245.210.119	192.168.2.23
May 27, 2022 11:51:59.784725904 CEST	40610	17372	192.168.2.23	172.245.210.119
May 27, 2022 11:52:12.821187019 CEST	43928	443	192.168.2.23	91.189.91.42
May 27, 2022 11:52:23.060884953 CEST	42836	443	192.168.2.23	91.189.91.43
May 27, 2022 11:52:27.156805992 CEST	42516	80	192.168.2.23	109.202.202.202
May 27, 2022 11:52:53.780035019 CEST	43928	443	192.168.2.23	91.189.91.42
May 27, 2022 11:53:14.263461113 CEST	42836	443	192.168.2.23	91.189.91.43

System Behavior

Analysis Process: KzUyRGzaDZ PID: 6230, Parent PID: 6131

General

Start time:	11:51:57
Start date:	27/05/2022
Path:	/tmp/KzUyRGzaDZ
Arguments:	/tmp/KzUyRGzaDZ
File size:	49804 bytes
MD5 hash:	9d8c6e23c4a6d55edf8849401f32ca4c

Analysis Process: KzUyRGzaDZ PID: 6231, Parent PID: 6230

General

Start time:	11:51:57
Start date:	27/05/2022
Path:	/tmp/KzUyRGzaDZ
Arguments:	n/a
File size:	49804 bytes
MD5 hash:	9d8c6e23c4a6d55edf8849401f32ca4c

Analysis Process: KzUyRGzaDZ PID: 6232, Parent PID: 6230

General

Start time:	11:51:57
Start date:	27/05/2022
Path:	/tmp/KzUyRGzaDZ
Arguments:	n/a
File size:	49804 bytes
MD5 hash:	9d8c6e23c4a6d55edf8849401f32ca4c

Analysis Process: KzUyRGzaDZ PID: 6233, Parent PID: 6232

General

Start time:	11:51:57
Start date:	27/05/2022
Path:	/tmp/KzUyRGzaDZ
Arguments:	n/a
File size:	49804 bytes
MD5 hash:	9d8c6e23c4a6d55edf8849401f32ca4c

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:	Binary file metadata, Email gateway, Environment variable, File monitoring, Malware reverse engineering, Network intrusion detection system, Network protocol analysis, Process command-line parameters, Process monitoring, Process use of network, SSL/TLS inspection, Windows event logs
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system. Functionality could exist within remote access tools to enable this, but utilities available on the operating system could also be used such as Ping or `net view` using Net . Adversaries may also use local host files (ex: `C:\Windows\System32\Drivers\etc\hosts` or `/etc/hosts` ) in order to discover the hostname to IP address mappings of remote systems.
Tactics:	Discovery
Data Sources:	AWS CloudTrail logs, Azure activity logs, Network protocol analysis, Process command-line parameters, Process monitoring, Process use of network, Stackdriver logs
Platforms:	AWS, Azure, GCP, Linux, macOS, 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:	Malware reverse engineering, Netflow/Enclave netflow, Packet capture, Process monitoring, Process use of network, SSL/TLS inspection
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using 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:	DNS records, Netflow/Enclave netflow, Network protocol analysis, Packet capture, Process monitoring, Process use of network
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 KzUyRGzaDZ

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Memory Dumps

Snort Signatures

Joe Sandbox Signatures

Spreading

Networking

System Summary

Data Obfuscation

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: KzUyRGzaDZ PID: 6230, Parent PID: 6131

General

Analysis Process: KzUyRGzaDZ PID: 6231, Parent PID: 6230

General

Analysis Process: KzUyRGzaDZ PID: 6232, Parent PID: 6230

General

Analysis Process: KzUyRGzaDZ PID: 6233, Parent PID: 6232

General

Linux Analysis Report
KzUyRGzaDZ