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Linux Analysis Report
disbot.elf

Overview

General Information

Sample name:	disbot.elf
Analysis ID:	1591993
MD5:	866850cc0bcf31f939dda66309d12347
SHA1:	3a843bc040b7e177c4a49a3ec2702a49ed17b185
SHA256:	8787bfbd907e8acaa8c4e75901eb2a01efbdc6c93d33714204ad4b8ed1d7c48a
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Found strings indicative of a multi-platform dropper

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:	42.0.0 Malachite
Analysis ID:	1591993
Start date and time:	2025-01-15 16:49:07 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 29s
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:	disbot.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/disbot.elf
PID:	5485
Exit Code:	2
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	fatal error: sigaction failed runtime stack: runtime.throw({0x414195, 0x10}) C:/Program Files/Go/src/runtime/panic.go:1077 +0x54 fp=0x7ffffce4 sp=0x7ffffcd0 pc=0x59ae4 runtime.sysSigaction.func1() C:/Program Files/Go/src/runtime/os_linux.go:560 +0x4c fp=0x7ffffcf0 sp=0x7ffffce4 pc=0x931b4 runtime.sysSigaction(0x41, 0x7ffffd18, 0x0) C:/Program Files/Go/src/runtime/os_linux.go:559 +0x7c fp=0x7ffffd08 sp=0x7ffffcf0 pc=0x560b4 runtime.sigaction(...) C:/Program Files/Go/src/runtime/sigaction.go:15 runtime.setsig(0x41, 0x78164) C:/Program Files/Go/src/runtime/os_linux.go:507 +0xbc fp=0x7ffffd34 sp=0x7ffffd08 pc=0x55f80 runtime.initsig(0x0) C:/Program Files/Go/src/runtime/signal_unix.go:148 +0x2c0 fp=0x7ffffd70 sp=0x7ffffd34 pc=0x77880 runtime.mstartm0() C:/Program Files/Go/src/runtime/proc.go:1624 +0x70 fp=0x7ffffd78 sp=0x7ffffd70 pc=0x61744 runtime.mstart1() C:/Program Files/Go/src/runtime/proc.go:1596 +0x94 fp=0x7ffffd88 sp=0x7ffffd78 pc=0x6163c runtime.mstart0() C:/Program Files/Go/src/runtime/proc.go:1557 +0x7c fp=0x7ffffd9c sp=0x7ffffd88 pc=0x61588 runtime.mstart() C:/Program Files/Go/src/runtime/asm_mipsx.s:89 +0x14 fp=0x7ffffda0 sp=0x7ffffd9c pc=0x9acb8 goroutine 1 [runnable]: runtime.main() C:/Program Files/Go/src/runtime/proc.go:144 fp=0x8287ec sp=0x8287ec pc=0x5d6a0 runtime.goexit() C:/Program Files/Go/src/runtime/asm_mipsx.s:641 +0x4 fp=0x8287ec sp=0x8287ec pc=0x9d0ec

Process Tree

system is lnxubuntu20

disbot.elf (PID: 5485, Parent: 5409, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/disbot.elf

cleanup

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: disbot.elf

ReversingLabs: Detection: 21%

Source: disbot.elf

String: x509: invalid signature: parent certificate cannot sign this kind of certificatecrypto/ecdh: internal error: nistec ScalarBaseMult failed for a fixed-size inputrefusing to use HTTP_PROXY value in CGI environment; see golang.org/s/cgihttpproxyx509: a root or intermediate certificate is not authorized to sign for this name: json: invalid use of ,string struct tag, trying to unmarshal unquoted value into %vx509: issuer has name constraints but leaf contains unknown or unconstrained name: (possibly because of %q while trying to verify candidate authority certificate %q)tls: downgrade attempt detected, possibly due to a MitM attack or a broken middleboxx509: signature algorithm specifies an %s public key, but have public key of type %Treflect.Value.Interface: cannot return value obtained from unexported field or methodreflect: New of type that may not be allocated in heap (possibly undefined cgo C type)x509: a root or intermediate certificate is not authorized for an extended key usage: http2: server sent GOAWAY and closed the connection; LastStreamID=%v, ErrCode=%v, debug=%qtls: handshake hash for a client certificate requested after discarding the handshake buffertls: unsupported certificate: private key is *ed25519.PrivateKey, expected ed25519.PrivateKeyb3312fa7e23ee7e4988e056be3f82d19181d9c6efe8141120314088f5013875ac656398d8a2ed19d2a85c8edd3ec2aefaa87ca22be8b05378eb1c71ef320ad746e1d3b628ba79b9859f741e082542a385502f25dbf55296c3a545e3872760ab73617de4a96262c6f5d9e98bf9292dc29f8f41dbd289a147ce9da3113b5f0b8c00a60b1ce1d7e819d7a431d7c90ea0e5fhttp: RoundTripper implementation (%T) returned a *Response with content length %d but a nil BodyNoClientCertRequestClientCertRequireAnyClientCertVerifyClientCertIfGivenRequireAndVerifyClientCertcipher: the nonce can't have zero length, or the security of the key will be immediately compromisedcgocheck > 1 mode is no longer supported at runtime. Use GOEXPERIMENT=cgocheck2 at build time instead.asn1: time did not serialize back to the original value and may be invalid: given %q, but serialized as %qhttp2: Transport: cannot retry err [%v] after Request.Body was written; define Request.GetBody to avoid this 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

Source: global traffic

TCP traffic: 192.168.2.14:46540 -> 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: disbot.elf	String found in binary or memory: https://cdn.discordapp.com/AUTO_MODERATION_RULE_CREATEAUTO_MODERATION_RULE_DELETEAUTO_MODERATION_RUL
Source: disbot.elf	String found in binary or memory: https://discord.com/MESSAGE_REACTION_ADDTHREAD_MEMBER_UPDATEunmarshall
Source: disbot.elf	String found in binary or memory: https://discord.com/developers/docs/reference#authentication-example-bot-token-authorization-headerh
Source: disbot.elf	String found in binary or memory: https://github.com/20Matrix77/2FTS3/raw/main/disbot;
Source: disbot.elf	String found in binary or memory: https://github.com/bwmarrin/discordgo

Source: unknown

Network traffic detected: HTTP traffic on port 46540 -> 443

Source: classification engine

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

Source: /tmp/disbot.elf (PID: 5485)

Queries kernel information via 'uname':

Jump to behavior

Source: disbot.elf, 5485.1.0000555dea6d1000.0000555dea9d8000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: disbot.elf, 5485.1.00007ffc5682f000.00007ffc56850000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/disbot.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/disbot.elf
Source: disbot.elf, 5485.1.00007ffc5682f000.00007ffc56850000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: disbot.elf, 5485.1.0000555dea6d1000.0000555dea9d8000.rw-.sdmp	Binary or memory string: ]U!/etc/qemu-binfmt/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	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	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

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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
disbot.elf	21%	ReversingLabs	Linux.Trojan.Generic

Name	Source	Malicious	Reputation
https://discord.com/MESSAGE_REACTION_ADDTHREAD_MEMBER_UPDATEunmarshall	disbot.elf	false	high
https://github.com/bwmarrin/discordgo	disbot.elf	false	high
https://discord.com/developers/docs/reference#authentication-example-bot-token-authorization-headerh	disbot.elf	false	high
https://cdn.discordapp.com/AUTO_MODERATION_RULE_CREATEAUTO_MODERATION_RULE_DELETEAUTO_MODERATION_RUL	disbot.elf	false	high
https://github.com/20Matrix77/2FTS3/raw/main/disbot;	disbot.elf	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	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	ub8ehJSePAfc9FYqZIT6.arm7.elf	Get hash	malicious	Unknown	Browse
	boooooos.arm7.elf	Get hash	malicious	Unknown	Browse
	Aqua.arm6.elf	Get hash	malicious	Unknown	Browse
	Mozi.m.elf	Get hash	malicious	Mirai	Browse
	arm7.elf	Get hash	malicious	Mirai	Browse
	arm6.elf	Get hash	malicious	Mirai	Browse
	main_arm.elf	Get hash	malicious	Mirai	Browse
	m68k.elf	Get hash	malicious	Mirai, Moobot	Browse
	bot.ppc.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse
	bot.m68k.elf	Get hash	malicious	Mirai, Gafgyt, Okiru	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	bot.arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	arm6.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	ub8ehJSePAfc9FYqZIT6.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	ub8ehJSePAfc9FYqZIT6.i686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	ub8ehJSePAfc9FYqZIT6.arm7.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	ub8ehJSePAfc9FYqZIT6.arc.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boooooos.arm7.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	ub8ehJSePAfc9FYqZIT6.mpsl.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	ub8ehJSePAfc9FYqZIT6.arm5.elf	Get hash	malicious	Unknown	Browse	91.189.91.42

File type:	ELF 32-bit MSB executable, MIPS, MIPS32 version 1 (SYSV), statically linked, Go BuildID=Yk9TiJ8vnWBPeisrRw2u/907SYokr3TPk7lxRzAho/Jw12en9PvOAVk6OsRKO8/10h01DZFEabE3e6PG8Gl, with debug_info, not stripped
Entropy (8bit):	6.259200397762468
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	disbot.elf
File size:	8'209'058 bytes
MD5:	866850cc0bcf31f939dda66309d12347
SHA1:	3a843bc040b7e177c4a49a3ec2702a49ed17b185
SHA256:	8787bfbd907e8acaa8c4e75901eb2a01efbdc6c93d33714204ad4b8ed1d7c48a
SHA512:	d406dd1bb6acfc25998e336a59520cfb8137597ed4b9c70f443f6cb45fb0bfd52046ea08d6cbdf8d40651c092fc6a10cc80ec637777a43a853d9881a59d665b0
SSDEEP:	98304:MBKGhuOnhHNThnLNBu9RXJBX/7CgpBdEXa:MBKGLznTu9RXJBX/GgpBdEXa
TLSH:	58866C137F18D70EC628113419B2CAD5676A1C5A85DAA927B381F30DF9F20AC5E6ECF1
File Content Preview:	.ELF.......................p...4....P....4. ...(...........4...4...4...................................d...d.........................7GD.7GD.............8...9...9...'...'...............`...a...a........(.........dt.Q............................p..........

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 15, 2025 16:49:56.112943888 CET	46540	443	192.168.2.14	185.125.190.26
Jan 15, 2025 16:50:27.343724012 CET	46540	443	192.168.2.14	185.125.190.26

System Behavior

Analysis Process: disbot.elf PID: 5485, Parent PID: 5409

General

Start time (UTC):	15:49:44
Start date (UTC):	15/01/2025
Path:	/tmp/disbot.elf
Arguments:	/tmp/disbot.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:
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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Linux Analysis Report disbot.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

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

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

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: disbot.elf PID: 5485, Parent PID: 5409

General

Chronological Activities

Linux Analysis Report
disbot.elf