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Linux Analysis Report
i.elf

Overview

General Information

Sample name:	i.elf
Analysis ID:	1582980
MD5:	20fbbd1ed5d4dd5f1c49c02125c43fcc
SHA1:	9bdf564fb3b2464c7bbd46527bfed8cc4f7ab005
SHA256:	77d0768e89bf11c600611c8eb024c5ccec5f8d1b9f93a50c4eb82b05e6c9b9a0
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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

Uses the "uname" system call to query kernel version information (possible evasion)

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1582980
Start date and time:	2025-01-01 09:41:03 +01:00
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:	i.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/i.elf
PID:	6255
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: 6227, Parent: 4331)

rm (PID: 6227, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.GAQ3561Sa0 /tmp/tmp.YlVAcQjf3i /tmp/tmp.qnGdC0KxUj

dash New Fork (PID: 6228, Parent: 4331)

rm (PID: 6228, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.GAQ3561Sa0 /tmp/tmp.YlVAcQjf3i /tmp/tmp.qnGdC0KxUj

i.elf (PID: 6255, Parent: 6156, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/i.elf

cleanup

Yara Signatures

⊘No yara matches

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: i.elf

ReversingLabs: Detection: 47%

Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
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 443 -> 33606
Source: unknown	Network traffic detected: HTTP traffic on port 33606 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

Source: LOAD without section mappings

Program segment: 0x100000

Source: classification engine

Classification label: mal48.linELF@0/0@0/0

Source: /usr/bin/dash (PID: 6227)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.GAQ3561Sa0 /tmp/tmp.YlVAcQjf3i /tmp/tmp.qnGdC0KxUj			Jump to behavior
Source: /usr/bin/dash (PID: 6228)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.GAQ3561Sa0 /tmp/tmp.YlVAcQjf3i /tmp/tmp.qnGdC0KxUj			Jump to behavior

Source: i.elf

Submission file: segment LOAD with 7.9965 entropy (max. 8.0)

Source: /tmp/i.elf (PID: 6255)

Queries kernel information via 'uname':

Jump to behavior

Source: i.elf, 6255.1.00007fffabeb0000.00007fffabed1000.rw-.sdmp	Binary or memory string: EN,Rx86_64/usr/bin/qemu-mips/tmp/i.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/i.elf
Source: i.elf, 6255.1.000055a5067bb000.000055a506842000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/mips
Source: i.elf, 6255.1.000055a5067bb000.000055a506842000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: i.elf, 6255.1.00007fffabeb0000.00007fffabed1000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: i.elf, 6255.1.00007fffabeb0000.00007fffabed1000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

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 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
i.elf	47%	ReversingLabs	Linux.Infostealer.Berbew

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
54.171.230.55	unknown	United States	16509	AMAZON-02US	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

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
54.171.230.55	.i.elf	Get hash	malicious	Unknown	Browse
	i.elf	Get hash	malicious	Unknown	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse
	Aqua.sh4.elf	Get hash	malicious	Unknown	Browse
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse
	chernobyl.arm7.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	rjnven64.elf	Get hash	malicious	Mirai	Browse
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse
	i.elf	Get hash	malicious	Unknown	Browse
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	main_x86_64.elf	Get hash	malicious	Gafgyt, Mirai, Okiru	Browse
	89.250.72.36-sparc-2024-12-31T13_33_10.elf	Get hash	malicious	Gafgyt	Browse
	i.elf	Get hash	malicious	Unknown	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	i.elf	Get hash	malicious	Unknown	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse
	arm.elf	Get hash	malicious	Unknown	Browse
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	main_x86_64.elf	Get hash	malicious	Gafgyt, Mirai, Okiru	Browse
	89.250.72.36-sparc-2024-12-31T13_33_10.elf	Get hash	malicious	Gafgyt	Browse
	i.elf	Get hash	malicious	Unknown	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	i.elf	Get hash	malicious	Unknown	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse
	arm.elf	Get hash	malicious	Unknown	Browse
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	main_x86_64.elf	Get hash	malicious	Gafgyt, Mirai, Okiru	Browse	91.189.91.42
	89.250.72.36-sparc-2024-12-31T13_33_10.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	main_x86_64.elf	Get hash	malicious	Gafgyt, Mirai, Okiru	Browse	91.189.91.42
	89.250.72.36-sparc-2024-12-31T13_33_10.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	arm.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
AMAZON-02US	NOTIFICATION_OF_DEPENDANTS.vbs	Get hash	malicious	Xmrig	Browse	52.222.214.54
	https://gogl.to/3HGT	Get hash	malicious	CAPTCHA Scam ClickFix	Browse	18.245.31.49
	rename_me_before.exe	Get hash	malicious	Python Stealer, Exela Stealer	Browse	45.112.123.227
	.i.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	http://img1.wsimg.com/blobby/go/9b6ed793-452c-4f8f-8f80-6847f4d114d7/downloads/71318864754.pdf	Get hash	malicious	Unknown	Browse	52.217.136.154
	i.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	allpdfpro.msi	Get hash	malicious	Unknown	Browse	143.204.98.59
	FW_ Carr & Jeanne Biggerstaff has sent you an ecard.msg	Get hash	malicious	Unknown	Browse	52.59.81.109
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	54.171.230.55
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse	34.243.160.129
INIT7CH	main_x86_64.elf	Get hash	malicious	Gafgyt, Mirai, Okiru	Browse	109.202.202.202
	89.250.72.36-sparc-2024-12-31T13_33_10.elf	Get hash	malicious	Gafgyt	Browse	109.202.202.202
	i.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	.i.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	i.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	arm.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	boatnet.arm5.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.arm7.elf	Get hash	malicious	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 MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, no section header
Entropy (8bit):	7.996489317384593
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	i.elf
File size:	63'826 bytes
MD5:	20fbbd1ed5d4dd5f1c49c02125c43fcc
SHA1:	9bdf564fb3b2464c7bbd46527bfed8cc4f7ab005
SHA256:	77d0768e89bf11c600611c8eb024c5ccec5f8d1b9f93a50c4eb82b05e6c9b9a0
SHA512:	d24f7b1f09ed8d79ff5d7e77f781f7f6ad953d384b5e4df2938fa4a95de014c1604e3505f66f95db6f8d1706a0006c0c9b7bc3647804a6bc910ce8cbf311536d
SSDEEP:	1536:yYI0ARqw1qAEW67UIWi7M8gmfmJo0WgswnD6Efyq8Pxh:yYI0ARqw1qAEv7UIFM8oJorFquyj0
TLSH:	6C53120233AA297196B14AF1E7FDBB88E6493D588FF66C15AC113D68F97235D1CC890C
File Content Preview:	.ELF....................../....4.........4. ...(......................Bd..Bd.................G...G.................................................^.......?.E.h4...@b..) ..]..0...a.t<..mc.zy/..>..!c...gM\<j..W`xD'..}...\..].j.L.u...S..i...../..F...@`..'k.

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	MIPS R3000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x112fe8
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	2
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	Prog Interpreter	Section Mappings
LOAD	0x0	0x100000	0x100000	0x14264	0x14264	7.9965	0x5	R E	0x10000
LOAD	0xa6c0	0x47a6c0	0x47a6c0	0x0	0x0	0.0000	0x6	RW	0x10000

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 1, 2025 09:41:47.284773111 CET	443	33606	54.171.230.55	192.168.2.23
Jan 1, 2025 09:41:47.284986019 CET	33606	443	192.168.2.23	54.171.230.55
Jan 1, 2025 09:41:47.289813042 CET	443	33606	54.171.230.55	192.168.2.23
Jan 1, 2025 09:41:49.288264990 CET	43928	443	192.168.2.23	91.189.91.42
Jan 1, 2025 09:41:54.663500071 CET	42836	443	192.168.2.23	91.189.91.43
Jan 1, 2025 09:41:56.199317932 CET	42516	80	192.168.2.23	109.202.202.202
Jan 1, 2025 09:42:09.253546953 CET	43928	443	192.168.2.23	91.189.91.42
Jan 1, 2025 09:42:21.539879084 CET	42836	443	192.168.2.23	91.189.91.43
Jan 1, 2025 09:42:25.635396004 CET	42516	80	192.168.2.23	109.202.202.202
Jan 1, 2025 09:42:50.207827091 CET	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: dash PID: 6227, Parent PID: 4331

General

Start time (UTC):	08:41:46
Start date (UTC):	01/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6227, Parent PID: 4331

General

Start time (UTC):	08:41:46
Start date (UTC):	01/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.GAQ3561Sa0 /tmp/tmp.YlVAcQjf3i /tmp/tmp.qnGdC0KxUj
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 6228, Parent PID: 4331

General

Start time (UTC):	08:41:46
Start date (UTC):	01/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6228, Parent PID: 4331

General

Start time (UTC):	08:41:46
Start date (UTC):	01/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.GAQ3561Sa0 /tmp/tmp.YlVAcQjf3i /tmp/tmp.qnGdC0KxUj
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: i.elf PID: 6255, Parent PID: 6156

General

Start time (UTC):	08:41:46
Start date (UTC):	01/01/2025
Path:	/tmp/i.elf
Arguments:	/tmp/i.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

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

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Warning!

Linux Analysis Report i.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Hooking and other Techniques for Hiding and Protection

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

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: 6227, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6227, Parent PID: 4331

General

Chronological Activities

Analysis Process: dash PID: 6228, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6228, Parent PID: 4331

General

Chronological Activities

Analysis Process: i.elf PID: 6255, Parent PID: 6156

General

Chronological Activities

Linux Analysis Report
i.elf