Edit tour

Linux Analysis Report
mips.bin.elf

Overview

General Information

Sample name:	mips.bin.elf
Analysis ID:	1541868
MD5:	a375ae8c642af9dffd1104393d48b349
SHA1:	a445ab0b9ed05c91c5ac4b791f5f4b23a60f911f
SHA256:	5a3324fca586d1d377fd5e5db27e30b31ee24ef1438aeb25be34a88e0e800286
Tags:	elfuser-abuse_ch

Detection

Score:	21
Range:	0 - 100
Whitelisted:	false

Signatures

Sample is packed with UPX

ELF contains segments with high entropy indicating compressed/encrypted content

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:	1541868
Start date and time:	2024-10-25 09:07:14 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 24s
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:	mips.bin.elf
Detection:	SUS
Classification:	sus21.evad.linELF@0/0@0/0

Warnings

VT rate limit hit for: mips.bin.elf

Runtime Messages

Command:	/tmp/mips.bin.elf
PID:	5530
Exit Code:	2
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

mips.bin.elf (PID: 5530, Parent: 5449, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/mips.bin.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

Source: mips.bin.elf

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

Source: LOAD without section mappings

Program segment: 0x10000

Source: classification engine

Classification label: sus21.evad.linELF@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 4.02 Copyright (C) 1996-2023 the UPX Team. All Rights Reserved. $

Source: mips.bin.elf	Submission file: segment LOAD with 7.9093 entropy (max. 8.0)
Source: mips.bin.elf	Submission file: segment LOAD with 7.9999 entropy (max. 8.0)

Source: /tmp/mips.bin.elf (PID: 5530)

Queries kernel information via 'uname':

Jump to behavior

Source: mips.bin.elf, 5530.1.00005561d83bf000.00005561d8467000.rw-.sdmp	Binary or memory string: aU!/etc/qemu-binfmt/mips
Source: mips.bin.elf, 5530.1.00005561d83bf000.00005561d8467000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: mips.bin.elf, 5530.1.00007fffd067b000.00007fffd069c000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/mips.bin.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/mips.bin.elf
Source: mips.bin.elf, 5530.1.00007fffd067b000.00007fffd069c000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips

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	11 Obfuscated Files or Information	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features

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

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
mips.bin.elf	3%	ReversingLabs	Linux.PUA.Generic

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

Source	Detection	Scanner	Label	Link
http://upx.sf.net	0%	URL Reputation	safe

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://upx.sf.net	mips.bin.elf	true	URL Reputation: safe	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 32-bit MSB executable, MIPS, MIPS32 version 1 (SYSV), statically linked, no section header
Entropy (8bit):	7.99987442024947
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	mips.bin.elf
File size:	2'194'572 bytes
MD5:	a375ae8c642af9dffd1104393d48b349
SHA1:	a445ab0b9ed05c91c5ac4b791f5f4b23a60f911f
SHA256:	5a3324fca586d1d377fd5e5db27e30b31ee24ef1438aeb25be34a88e0e800286
SHA512:	7d4aabd8ec0030b8d0db6af6e37e0fde67d9f3b6e14008cfda2211217ecd33374fd38a27e4c8211aff25b7b689ffcb6f61acc43fece72384a6e251724a0a5c57
SSDEEP:	49152:Wj+W/17ASwZ5AAZuZLPwgFVnAcehXAfnEO1CPD9+AWFw6aI6:bocZ29L4iVehXAfnEHD9X3
TLSH:	A6A533E27F12A19F2A3FF26749E95DC5BCF26FAD61DDC5150752B0637AA43403C022A2
File Content Preview:	.ELF......................f....4....P....4. .........................................................!{ .!{ ........!.#.UPX!.8.....................v.......?.E.h4...@b..) ....~P~..#....:......J9...s.h...+.D....tX...4.. F..,.p..{.0r".>.lA&.;.u...)...A9Ouja.

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:	0xd266f0
Flags:	0x50001004
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	2
Section Header Offset:	0
Section Header Size:	0
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	0x10000	0x10000	0x1000	0xaf89a2	7.9093	0x6	RW	0x10000
LOAD	0x0	0xb10000	0xb10000	0x217b20	0x217b20	7.9999	0x5	R E	0x10000

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: mips.bin.elf PID: 5530, Parent PID: 5449

General

Start time (UTC):	07:08:02
Start date (UTC):	25/10/2024
Path:	/tmp/mips.bin.elf
Arguments:	/tmp/mips.bin.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 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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report mips.bin.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

Networking

System Summary

Data Obfuscation

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

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

Program Segments

Network Behavior

System Behavior

Analysis Process: mips.bin.elf PID: 5530, Parent PID: 5449

General

Chronological Activities

Linux Analysis Report
mips.bin.elf