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Linux Analysis Report
mips.elf

Overview

General Information

Sample name:	mips.elf
Analysis ID:	1581687
MD5:	7f627c5e3823ed5b9081503e5f35204e
SHA1:	9a84f6f531c341b46fad4759ab368cbb6f5958f3
SHA256:	2e5a3af300bcfe6bd85efa7d9fa4473790a7ebc86ae38653cac86ac4ccf009d9
Tags:	elfuser-abuse_ch
Infos:

Detection

Gafgyt

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Yara detected Gafgyt

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample has stripped symbol table

Sample listens on a socket

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

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1581687
Start date and time:	2024-12-28 16:26:07 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 16s
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.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/mips.elf
PID:	5431
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	listening dn0
Standard Error:

Process Tree

system is lnxubuntu20

mips.elf (PID: 5431, Parent: 5356, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/mips.elf

mips.elf New Fork (PID: 5433, Parent: 5431)

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Bashlite, Gafgyt	Bashlite is a malware family which infects Linux systems in order to launch distributed denial-of-service attacks (DDoS). Originally it was also known under the name Bashdoor, but this term now refers to the exploit method used by the malware. It has been used to launch attacks of up to 400 Gbps.	No Attribution	http://blog.trendmicro.com/trendlabs-security-intelligence/bashlite-affects-devices-running-on-busybox/ https://blog.cyber5w.com/gafgyt-backdoor-analysis https://blog.netlab.360.com/gafgtyt_tor-and-necro-are-on-the-move-again/ https://blog.netlab.360.com/public-cloud-threat-intelligence-202203/ https://blog.netlab.360.com/some_details_of_the_ddos_attacks_targeting_ukraine_and_russia_in_recent_days/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.bashlite

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
mips.elf	JoeSecurity_Gafgyt	Yara detected Gafgyt	Joe Security

Memory Dumps

Source	Rule	Description	Author	Strings
5431.1.00007f1994400000.00007f199442e000.r-x.sdmp	JoeSecurity_Gafgyt	Yara detected Gafgyt	Joe Security
5433.1.00007f1994400000.00007f199442e000.r-x.sdmp	JoeSecurity_Gafgyt	Yara detected Gafgyt	Joe Security

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: mips.elf

Avira: detected

Source: /tmp/mips.elf (PID: 5431)

Socket: 127.0.0.1:8345

Jump to behavior

Source: global traffic

TCP traffic: 192.168.2.13:48202 -> 185.125.190.26:443

Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown	TCP traffic detected without corresponding DNS query: 185.125.190.26

Source: unknown

Network traffic detected: HTTP traffic on port 48202 -> 443

Source: Initial sample	String containing 'busybox' found: /bin/busybox iptables -A INPUT -p tcp --dport 26721 -j ACCEPT
Source: Initial sample	String containing 'busybox' found: busybox iptables -A INPUT -p tcp --dport 26721 -j ACCEPT
Source: Initial sample	String containing 'busybox' found: [KILLER] Failed to kill process/proc/%d/fd/usr/bin//usr/sbin//lib//lib64//sys//proc/self//proc/thread-self/socketsetsockoptbindlisten1.1.1.1hi im here, i think/bin/busybox iptables -A INPUT -p tcp --dport 26721 -j ACCEPT/usr/bin/iptables -A INPUT -p tcp --dport 26721 -j ACCEPTbusybox iptables -A INPUT -p tcp --dport 26721 -j ACCEPTbindtoipconnectpoll/proc/net/tcp/proc/0

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal56.troj.linELF@0/0@0/0

Source: /tmp/mips.elf (PID: 5431)

Queries kernel information via 'uname':

Jump to behavior

Source: mips.elf, 5431.1.00005573eb145000.00005573eb1ef000.rw-.sdmp, mips.elf, 5433.1.00005573eb145000.00005573eb1ef000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: mips.elf, 5431.1.00007ffed380d000.00007ffed382e000.rw-.sdmp, mips.elf, 5433.1.00007ffed380d000.00007ffed382e000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/mips.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.elf
Source: mips.elf, 5431.1.00005573eb145000.00005573eb1ef000.rw-.sdmp, mips.elf, 5433.1.00005573eb145000.00005573eb1ef000.rw-.sdmp	Binary or memory string: sU!/etc/qemu-binfmt/mips
Source: mips.elf, 5431.1.00007ffed380d000.00007ffed382e000.rw-.sdmp, mips.elf, 5433.1.00007ffed380d000.00007ffed382e000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips

Stealing of Sensitive Information

Yara detected Gafgyt

Source: Yara match	File source: mips.elf, type: SAMPLE
Source: Yara match	File source: 5431.1.00007f1994400000.00007f199442e000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5433.1.00007f1994400000.00007f199442e000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Yara detected Gafgyt

Source: Yara match	File source: mips.elf, type: SAMPLE
Source: Yara match	File source: 5431.1.00007f1994400000.00007f199442e000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5433.1.00007f1994400000.00007f199442e000.r-x.sdmp, type: MEMORY

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	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	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
mips.elf	100%	Avira	EXP/ELF.Agent.J.8

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	Flag	ASN	ASN Name	Malicious
185.125.190.26	unknown	United Kingdom		41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.125.190.26	yakuza.m68k.elf	Get hash	malicious	Mirai	Browse
	mpsl.elf	Get hash	malicious	Gafgyt	Browse
	yakuza.i586.elf	Get hash	malicious	Mirai	Browse
	x86_64.elf	Get hash	malicious	Gafgyt	Browse
	45.200.149.186-boatnet.arc-2024-12-28T01_22_59.elf	Get hash	malicious	Mirai	Browse
	109.176.30.237-boatnet.mpsl-2024-12-27T20_20_43.elf	Get hash	malicious	Mirai	Browse
	drp.x86.elf	Get hash	malicious	Mirai, Okiru	Browse
	ppc.elf	Get hash	malicious	Mirai	Browse
	arm6.nn.elf	Get hash	malicious	Okiru	Browse
	RpcSecurity.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	yakuza.arm5.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	x86_64.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	arm5.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	yakuza.m68k.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	mpsl.elf	Get hash	malicious	Gafgyt	Browse	185.125.190.26
	yakuza.i586.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	arm6.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	arm4.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	yakuza.sh.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	yakuza.sparc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42

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, stripped
Entropy (8bit):	5.103292298711479
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	mips.elf
File size:	207'572 bytes
MD5:	7f627c5e3823ed5b9081503e5f35204e
SHA1:	9a84f6f531c341b46fad4759ab368cbb6f5958f3
SHA256:	2e5a3af300bcfe6bd85efa7d9fa4473790a7ebc86ae38653cac86ac4ccf009d9
SHA512:	d1027a78921d899ec83fb6d2e5734fe23c22dd31ccb338595911789eaafece9d909b2e1312e9e1b43176cf6244957effb832d30ea06583dd72b7999863bfcf51
SSDEEP:	3072:9D961PlSFlHIX9EN4H144MSdQba/YOm+hfyvdn:9D90PgFlHIX94BSoaAj+hqVn
TLSH:	3A14A71E6E228F7DF26C873047B74A35A76D23D627E1D684E2ACC1145F2025E641FFA8
File Content Preview:	.ELF.....................@.`...4..(......4. ...(.............@...@..... ... ...............$.F.$.F.$..X....,........dt.Q............................<...'..l...!'.......................<...'..H...!... ....'9... ......................<...'......!........'9.

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:	0x400260
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	207012
Section Header Size:	40
Number of Section Headers:	14
Header String Table Index:	13

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x400094	0x94	0x8c	0x0	0x6	AX	4
.text	PROGBITS	0x400120	0x120	0x2a7f0	0x0	0x6	AX	16
.fini	PROGBITS	0x42a910	0x2a910	0x5c	0x0	0x6	AX	4
.rodata	PROGBITS	0x42a970	0x2a970	0x26b0	0x0	0x2	A	16
.ctors	PROGBITS	0x46d024	0x2d024	0xc	0x0	0x3	WA	4
.dtors	PROGBITS	0x46d030	0x2d030	0x8	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x46d03c	0x2d03c	0x490	0x0	0x3	WA	4
.data	PROGBITS	0x46d4e0	0x2d4e0	0x4930	0x0	0x3	WA	32
.got	PROGBITS	0x471e10	0x31e10	0xa30	0x4	0x10000003	WAp	16
.sbss	NOBITS	0x472840	0x32840	0x3c	0x0	0x10000003	WAp	4
.bss	NOBITS	0x472880	0x32840	0x48d0	0x0	0x3	WA	16
.mdebug.abi32	PROGBITS	0x14e2	0x32840	0x0	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x32840	0x64	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	0x2d020	0x2d020	5.4164	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x2d024	0x46d024	0x46d024	0x581c	0xa12c	1.4028	0x6	RW	0x10000	.ctors .dtors .data.rel.ro .data .got .sbss .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Dec 28, 2024 16:26:59.146585941 CET	48202	443	192.168.2.13	185.125.190.26
Dec 28, 2024 16:27:30.122654915 CET	48202	443	192.168.2.13	185.125.190.26

System Behavior

Analysis Process: mips.elf PID: 5431, Parent PID: 5356

General

Start time (UTC):	15:26:45
Start date (UTC):	28/12/2024
Path:	/tmp/mips.elf
Arguments:	/tmp/mips.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

Chronological Activities

Analysis Process: mips.elf PID: 5433, Parent PID: 5431

General

Start time (UTC):	15:26:45
Start date (UTC):	28/12/2024
Path:	/tmp/mips.elf
Arguments:	-
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

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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Linux Analysis Report mips.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Malware Analysis System Evasion

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

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

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: mips.elf PID: 5431, Parent PID: 5356

General

Chronological Activities

Analysis Process: mips.elf PID: 5433, Parent PID: 5431

General

Chronological Activities

Linux Analysis Report
mips.elf